1 6463 150 TISSUE METHYLATION AND DEMETHYLATION INFLUENCE TRANSLESION SYNTHESIS DNA POLYMERASES (TLS) CONTRIBUTING TO THE GENESIS OF CHROMOSOMAL ABNORMALITIES IN MYELODYSPLASTIC SYNDROME. AIMS: DNA METHYLATION HAS ITS DISTRIBUTION INFLUENCED BY DNA DEMETHYLATION PROCESSES WITH THE CATALYTIC CONVERSION OF 5-METHYLCYTOSINE (5MC) INTO 5-HYDROXYMETHYLCYTOSINE (5HMC). MYELODYSPLASTIC SYNDROME (MDS) HAS BEEN ASSOCIATED WITH EPIGENETIC DYSREGULATION OF GENES RELATED TO DNA REPAIR SYSTEM, CHRONIC IMMUNE RESPONSE AND CELL CYCLE. METHODS: WE EVALUATED THE TISSUE DNA METHYLATION/HYDROXYMETHYLATION IN BONE MARROW TREPHINE BIOPSIES OF 73 PATIENTS WITH MDS, TRYING TO CORRELATE WITH THE MRNA EXPRESSION OF 21 GENES (POLH, POLL, REV3L, POLN, POLQ, POLI, POLK, IRF-1, IRF-2, IRF-3, IRF-4, IRF-5, IRF6, IRF-7, IRF-8,IRF-9, MAD2, CDC20, AURKA, AURKB AND TPX2). RESULTS: THE M-SCORE (5MC) WAS SIGNIFICANTLY HIGHER IN PATIENTS WITH CHROMOSOMAL ABNORMALITIES THAN PATIENTS WITH NORMAL KARYOTYPE (95% CI -27.127779 TO -2.368020; P=0.022). WE OBSERVED A HIGHER 5MC/5HMC RATIO IN PATIENTS CLASSIFIED AS HIGH-RISK SUBTYPES COMPARED WITH LOW-RISK SUBTYPES (95% CI -72.922115 TO -1.855662; P=0.040) AS WELL AS PATIENTS WITH HYPERCELLULAR BONE MARROW COMPARED WITH PATIENTS WITH NORMOCELLULAR/HYPOCELLULAR BONE MARROW (95% CI -69.189259 TO -0.511828; P=0.047) AND WITH THE PRESENCE OF DYSERYTHROPOIESIS (95% CI 17.077703 TO 51.331388; P=0.001). DNA POLS WITH TRANSLESION ACTIVITY ARE SIGNIFICANTLY INFLUENCED BY METHYLATION. AS 5MC IMMUNOEXPRESSION INCREASES, THE EXPRESSIONS OF POLH (R=-0.816; R(2) =0.665; P=0.000), POLQ (R=-0.790; R(2)=0.624; P=0.001), PCNA (R=-0.635; R(2)=0.403; P=0.020), POLK (R=-0.633; R(2)=0.400; P=0.036 AND REV1 (R=-0.578; R(2)=0.334; P=0.049) DECREASE. CONCLUSIONS: OUR RESULTS CONFIRM THAT THERE IS AN IMBALANCE IN THE DNA METHYLATION IN MDS, INFLUENCING THE DEVELOPMENT OF CHROMOSOMAL ABNORMALITIES WHICH MAY BE ASSOCIATED WITH THE LOW EXPRESSION OF DNA POLYMERASES WITH TRANSLESION SYNTHESIS POLYMERASES ACTIVITY.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
2 3303  27 HIGH-FREQUENCY P16(INK) (4A) PROMOTER METHYLATION IS ASSOCIATED WITH HISTONE METHYLTRANSFERASE SETDB1 EXPRESSION IN SPORADIC CUTANEOUS MELANOMA. EPIGENETIC MECHANISMS PARTICIPATE IN MELANOMA DEVELOPMENT AND PROGRESSION. THE EFFECT OF HISTONE MODIFICATIONS AND THEIR CATALYSING ENZYMES OVER EUCHROMATIC PROMOTER DNA METHYLATION IN MELANOMA REMAINS UNCLEAR. THIS STUDY INVESTIGATED THE POTENTIAL ASSOCIATION OF P16(INK) (4A) PROMOTER METHYLATION WITH HISTONE METHYLTRANSFERASE SETDB1 EXPRESSION IN GREEK PATIENTS WITH SPORADIC MELANOMA AND THEIR CORRELATION WITH CLINICOPATHOLOGICAL CHARACTERISTICS. PROMOTER METHYLATION WAS DETECTED BY METHYLATION-SPECIFIC PCR IN 100 PERIPHERAL BLOOD SAMPLES AND 58 MELANOMA TISSUES FROM THE SAME PATIENTS. CELL PROLIFERATION (KI-67 INDEX), P16(INK) (4A) AND SETDB1 EXPRESSION WERE EVALUATED BY IMMUNOHISTOCHEMISTRY. HIGH-FREQUENCY PROMOTER METHYLATION (25.86%) WAS OBSERVED IN TISSUE SAMPLES AND CORRELATED WITH INCREASED CELL PROLIFERATION (P = 0.0514). P16(INK) (4A) PROMOTER METHYLATION WAS HIGHER IN VERTICAL GROWTH-PHASE (60%) MELANOMAS THAN IN RADIAL (40%, P = 0.063) AND THOSE DISPLAYING EPIDERMAL INVOLVEMENT (P = 0.046). IMPORTANTLY, P16(INK) (4A) METHYLATION CORRELATED WITH INCREASED MELANOMA THICKNESS ACCORDING TO BRESLOW INDEX (P = 0.0495) AND MARGINALLY WITH INCREASED CLARK LEVEL (I/II VS III/IV/V, P = 0.070). LOW (1-30%) P16(INK) (4A) EXPRESSION WAS DETECTED AT THE MAJORITY (19 OF 54) OF MELANOMA CASES (35.19%), BEING MARGINALLY CORRELATED WITH TUMOR LYMPHOCYTIC INFILTRATION (P = 0.078). SETDB1 NUCLEAR IMMUNOREACTIVITY WAS OBSERVED IN 47 OF 57 (82.46%) CASES, WHEREAS 27 OF 57 (47.37%) SHOWED CYTOPLASMIC IMMUNOEXPRESSION. CYTOPLASMIC SETDB1 EXPRESSION CORRELATED WITH HIGHER FREQUENCY OF P16(INK) (4A) METHYLATION AND P16(INK) (4A) EXPRESSION (P = 0.033, P = 0.011, RESPECTIVELY). INCREASED NUCLEAR SETDB1 LEVELS WERE ASSOCIATED WITH HIGHER MITOTIC COUNT (0-5/MM(2) VS >5/MM(2) , P = 0.0869), ADVANCED CLARK LEVEL (III-V, P = 0.0380), EPIDERMAL INVOLVEMENT (P = 0.0331) AND THE NON-CHRONIC SUN EXPOSURE-ASSOCIATED MELANOMA TYPE (P = 0.0664). OUR DATA DEMONSTRATE FOR THE FIRST TIME THE ASSOCIATION OF HISTONE METHYLTRANSFERASE SETDB1 WITH FREQUENT METHYLATION OF THE EUCHROMATIC P16(INK) (4A) PROMOTER AND SEVERAL PROGNOSTIC PARAMETERS IN MELANOMAS.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
3  967  19 CHRONIC NICOTINE EXPOSURE AUGMENTS RENAL OXIDATIVE STRESS AND INJURY THROUGH TRANSCRIPTIONAL ACTIVATION OF P66SHC. BACKGROUND: CHRONIC NICOTINE (CH-NIC) EXPOSURE EXACERBATES ISCHEMIA/REPERFUSION (I/R)-INDUCED OXIDATIVE STRESS AND ACUTE KIDNEY INJURY (AKI), AND MITOCHONDRIAL PRODUCTION OF REACTIVE OXYGEN SPECIES (ROS) IN CULTURED RENAL PROXIMAL TUBULE CELLS (RPTCS). BECAUSE SER36-PHOSPHORYLATED P66SHC MODULATES MITOCHONDRIAL ROS PRODUCTION AND INJURY OF RPTCS, WE HYPOTHESIZED THAT CH-NIC EXACERBATES AKI BY INCREASING STRESS-INDUCED PHOSPHORYLATION OF P66SHC. METHODS: WE FIRST TESTED WHETHER CH-NIC AUGMENTS I/R-AKI-INDUCED EXPRESSION AND PHOSPHORYLATION OF P66SHC IN VIVO. WE THEN EXAMINED WHETHER KNOCKING DOWN P66SHC, OR IMPAIRING ITS SER36 PHOSPHORYLATION OR BINDING TO CYTOCHROME C, ALTERS THE EFFECTS OF CH-NIC ON OXIDATIVE STRESS (H(2)O(2))-INDUCED PRODUCTION OF ROS, MITOCHONDRIAL DEPOLARIZATION AND INJURY IN RPTCS IN VITRO. RESULTS: WE FOUND THAT CH-NIC INCREASED THE EXPRESSION OF P66SHC IN THE CONTROL AND ISCHEMIC KIDNEYS, BUT ONLY INCREASED ITS SER36 PHOSPHORYLATION AFTER RENAL I/R. KNOCKING DOWN P66SHC OR IMPAIRING PHOSPHORYLATION OF ITS SER36 RESIDUE, VIA THE S36A MUTATION (BUT NOT THE PHOSPHOMIMETIC S36D MUTATION), BLUNTED CH-NIC + H2O2-DEPENDENT ROS PRODUCTION, MITOCHONDRIAL DEPOLARIZATION AND INJURY IN RPTCS. ADDITIONALLY, CH-NIC + H2O2-DEPENDENT BINDING OF P66SHC TO MITOCHONDRIAL CYTOCHROME C WAS ATTENUATED BY S36A MUTATION OF P66SHC, AND IMPAIRING CYTOCHROME C BINDING (VIA W134F MUTATION) ABOLISHED ROS PRODUCTION, MITOCHONDRIAL DEPOLARIZATION AND INJURY, WHILE ECTOPIC OVEREXPRESSION OF P66SHC (WHICH MIMICS CH-NIC TREATMENT) AUGMENTED OXIDANT INJURY. WE DETERMINED THAT CH-NIC STIMULATES THE P66SHC PROMOTER THROUGH P53- AND EPIGENETIC MODIFICATION (PROMOTER HYPOMETHYLATION). CONCLUSIONS: CH-NIC WORSENS OXIDATIVE STRESS-DEPENDENT ACUTE RENAL INJURY BY INCREASING EXPRESSION AND CONSEQUENT OXIDATIVE STRESS-DEPENDENT SER36 PHOSPHORYLATION OF P66SHC. THUS, TARGETING THIS PATHWAY MAY HAVE THERAPEUTIC RELEVANCE IN PREVENTING/AMELIORATING TOBACCO-RELATED KIDNEY INJURY.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
4 2649  23 EPIGENOMIC, GENOMIC, AND TRANSCRIPTOMIC LANDSCAPE OF SCHWANNOMATOSIS. SCHWANNOMATOSIS (SWNTS) IS A GENETIC CANCER PREDISPOSITION SYNDROME THAT MANIFESTS AS MULTIPLE AND OFTEN PAINFUL NEURONAL TUMORS CALLED SCHWANNOMAS (SWNS). WHILE GERMLINE MUTATIONS IN SMARCB1 OR LZTR1, PLUS SOMATIC MUTATIONS IN NF2 AND LOSS OF HETEROZYGOSITY IN CHROMOSOME 22Q HAVE BEEN IDENTIFIED IN A SUBSET OF PATIENTS, LITTLE IS KNOWN ABOUT THE EPIGENOMIC AND GENOMIC ALTERATIONS THAT DRIVE SWNTS-RELATED SWNS (SWNTS-SWNS) IN A MAJORITY OF THE CASES. WE PERFORMED MULTIPLATFORM GENOMIC ANALYSIS AND ESTABLISHED THE MOLECULAR SIGNATURE OF SWNTS-SWNS. WE SHOW THAT SWNTS-SWNS HARBOR DISTINCT GENOMIC FEATURES RELATIVE TO THE HISTOLOGICALLY IDENTICAL NON-SYNDROMIC SPORADIC SWNS (NS-SWNS). WE DEMONSTRATE THE EXISTENCE OF FOUR DISTINCT DNA METHYLATION SUBGROUPS OF SWNTS-SWNS THAT ARE ASSOCIATED WITH SPECIFIC TRANSCRIPTIONAL PROGRAMS AND TUMOR LOCATION. WE SHOW SEVERAL NOVEL RECURRENT NON-22Q DELETIONS AND STRUCTURAL REARRANGEMENTS. WE DETECTED THE SH3PXD2A-HTRA1 GENE FUSION IN SWNTS-SWNS, WITH PREDOMINANCE IN LZTR1-MUTANT TUMORS. IN ADDITION, WE IDENTIFIED SPECIFIC GENETIC, EPIGENETIC, AND ACTIONABLE TRANSCRIPTIONAL PROGRAMS ASSOCIATED WITH PAINFUL SWNTS-SWNS INCLUDING PIGF, VEGF, MEK, AND MTOR PATHWAYS, WHICH MAY BE HARNESSED FOR MANAGEMENT OF THIS SYNDROME.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
5  890  21 CHRONIC DIETARY EXPOSURE OF ROOSTERS TO A GLYPHOSATE-BASED HERBICIDE INCREASES SEMINAL PLASMA GLYPHOSATE AND AMPA CONCENTRATIONS, ALTERS SPERM PARAMETERS, AND INDUCES METABOLIC DISORDERS IN THE PROGENY. THE EFFECTS OF CHRONIC DIETARY ROUNDUP (RU) EXPOSURE ON ROOSTER SPERM PARAMETERS, FERTILITY, AND OFFSPRING ARE UNKNOWN. WE INVESTIGATED THE EFFECTS OF CHRONIC RU DIETARY EXPOSURE (46.8 MG KG(-1) DAY(-1) GLYPHOSATE) FOR 5 WEEKS IN 32-WEEK-OLD ROOSTERS (N = 5 RU-EXPOSED AND N = 5 CONTROL (CT)). ALTHOUGH THE CONCENTRATIONS OF GLYPHOSATE AND ITS MAIN METABOLITE AMPA (AMINOMETHYLPHOSPHONIC ACID) INCREASED IN BLOOD PLASMA AND SEMINAL FLUID DURING EXPOSURE, NO SIGNIFICANT DIFFERENCES IN TESTIS WEIGHT AND SPERM CONCENTRATIONS WERE OBSERVED BETWEEN RU AND CT ROOSTERS. HOWEVER, SPERM MOTILITY WAS SIGNIFICANTLY REDUCED, ASSOCIATED WITH DECREASED CALCIUM AND ATP CONCENTRATIONS IN RU SPERMATOZOA. PLASMA TESTOSTERONE AND OESTRADIOL CONCENTRATIONS INCREASED IN RU ROOSTERS. THESE NEGATIVE EFFECTS CEASED 14 DAYS AFTER RU REMOVAL FROM THE DIET. EPIGENETIC ANALYSIS SHOWED A GLOBAL DNA HYPOMETHYLATION IN RU ROOSTERS. AFTER ARTIFICIAL INSEMINATION OF HENS (N = 40) WITH SPERM FROM CT OR RU ROOSTERS, EGGS WERE COLLECTED AND ARTIFICIALLY INCUBATED. EMBRYO VIABILITY DID NOT DIFFER, BUT CHICKS FROM RU ROOSTERS (N = 118) HAD A HIGHER FOOD CONSUMPTION, BODY WEIGHT AND SUBCUTANEOUS ADIPOSE TISSUE CONTENT. CHRONIC DIETARY RU EXPOSURE IN ROOSTERS REDUCES SPERM MOTILITY AND INCREASES PLASMA TESTOSTERONE LEVELS, GROWTH PERFORMANCE, AND FATTENING IN OFFSPRING.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
6   56  21 A GENOME-WIDE ASSOCIATION META-ANALYSIS OF CIRCULATING SEX HORMONE-BINDING GLOBULIN REVEALS MULTIPLE LOCI IMPLICATED IN SEX STEROID HORMONE REGULATION. SEX HORMONE-BINDING GLOBULIN (SHBG) IS A GLYCOPROTEIN RESPONSIBLE FOR THE TRANSPORT AND BIOLOGIC AVAILABILITY OF SEX STEROID HORMONES, PRIMARILY TESTOSTERONE AND ESTRADIOL. SHBG HAS BEEN ASSOCIATED WITH CHRONIC DISEASES INCLUDING TYPE 2 DIABETES (T2D) AND WITH HORMONE-SENSITIVE CANCERS SUCH AS BREAST AND PROSTATE CANCER. WE PERFORMED A GENOME-WIDE ASSOCIATION STUDY (GWAS) META-ANALYSIS OF 21,791 INDIVIDUALS FROM 10 EPIDEMIOLOGIC STUDIES AND VALIDATED THESE FINDINGS IN 7,046 INDIVIDUALS IN AN ADDITIONAL SIX STUDIES. WE IDENTIFIED TWELVE GENOMIC REGIONS (SNPS) ASSOCIATED WITH CIRCULATING SHBG CONCENTRATIONS. LOCI NEAR THE IDENTIFIED SNPS INCLUDED SHBG (RS12150660, 17P13.1, P = 1.8 X 10(-106)), PRMT6 (RS17496332, 1P13.3, P = 1.4 X 10(-11)), GCKR (RS780093, 2P23.3, P = 2.2 X 10(-16)), ZBTB10 (RS440837, 8Q21.13, P = 3.4 X 10(-09)), JMJD1C (RS7910927, 10Q21.3, P = 6.1 X 10(-35)), SLCO1B1 (RS4149056, 12P12.1, P = 1.9 X 10(-08)), NR2F2 (RS8023580, 15Q26.2, P = 8.3 X 10(-12)), ZNF652 (RS2411984, 17Q21.32, P = 3.5 X 10(-14)), TDGF3 (RS1573036, XQ22.3, P = 4.1 X 10(-14)), LHCGR (RS10454142, 2P16.3, P = 1.3 X 10(-07)), BAIAP2L1 (RS3779195, 7Q21.3, P = 2.7 X 10(-08)), AND UGT2B15 (RS293428, 4Q13.2, P = 5.5 X 10(-06)). THESE GENES ENCOMPASS MULTIPLE BIOLOGIC PATHWAYS, INCLUDING HEPATIC FUNCTION, LIPID METABOLISM, CARBOHYDRATE METABOLISM AND T2D, ANDROGEN AND ESTROGEN RECEPTOR FUNCTION, EPIGENETIC EFFECTS, AND THE BIOLOGY OF SEX STEROID HORMONE-RESPONSIVE CANCERS INCLUDING BREAST AND PROSTATE CANCER. WE FOUND EVIDENCE OF SEX-DIFFERENTIATED GENETIC INFLUENCES ON SHBG. IN A SEX-SPECIFIC GWAS, THE LOCI 4Q13.2-UGT2B15 WAS SIGNIFICANT IN MEN ONLY (MEN P = 2.5 X 10(-08), WOMEN P = 0.66, HETEROGENEITY P = 0.003). ADDITIONALLY, THREE LOCI SHOWED STRONG SEX-DIFFERENTIATED EFFECTS: 17P13.1-SHBG AND XQ22.3-TDGF3 WERE STRONGER IN MEN, WHEREAS 8Q21.12-ZBTB10 WAS STRONGER IN WOMEN. CONDITIONAL ANALYSES IDENTIFIED ADDITIONAL SIGNALS AT THE SHBG GENE THAT TOGETHER ALMOST DOUBLE THE PROPORTION OF VARIANCE EXPLAINED AT THE LOCUS. USING AN INDEPENDENT STUDY OF 1,129 INDIVIDUALS, ALL SNPS IDENTIFIED IN THE OVERALL OR SEX-DIFFERENTIATED OR CONDITIONAL ANALYSES EXPLAINED ~15.6% AND ~8.4% OF THE GENETIC VARIATION OF SHBG CONCENTRATIONS IN MEN AND WOMEN, RESPECTIVELY. THE EVIDENCE FOR SEX-DIFFERENTIATED EFFECTS AND ALLELIC HETEROGENEITY HIGHLIGHT THE IMPORTANCE OF CONSIDERING THESE FEATURES WHEN ESTIMATING COMPLEX TRAIT VARIANCE.	2012	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
7 4048  29 MAINTENANCE AND PHARMACOLOGIC TARGETING OF ROR1 PROTEIN LEVELS VIA UHRF1 IN T(1;19) PRE-B-ALL. EXPRESSION OF THE TRANSMEMBRANE PSEUDOKINASE ROR1 IS REQUIRED FOR SURVIVAL OF T(1;19)-PRE-B-CELL ACUTE LYMPHOBLASTIC LEUKEMIA (T(1;19) PRE-B-ALL), CHRONIC LYMPHOCYTIC LEUKEMIA, AND MANY SOLID TUMORS. HOWEVER, TARGETING ROR1 WITH SMALL-MOLECULES HAS BEEN CHALLENGING DUE TO THE ABSENCE OF ROR1 KINASE ACTIVITY. TO IDENTIFY GENES THAT REGULATE ROR1 EXPRESSION AND MAY, THEREFORE, SERVE AS SURROGATE DRUG TARGETS, WE EMPLOYED AN SIRNA SCREENING APPROACH AND DETERMINED THAT THE EPIGENETIC REGULATOR AND E3 UBIQUITIN LIGASE, UHRF1, IS REQUIRED FOR T(1;19) PRE-B-ALL CELL VIABILITY IN A ROR1-DEPENDENT MANNER. UPON UHRF1 SILENCING, ROR1 PROTEIN IS REDUCED WITHOUT ALTERING ROR1 MRNA, AND ECTOPICALLY EXPRESSED UHRF1 IS SUFFICIENT TO INCREASE ROR1 LEVELS. ADDITIONALLY, PROTEASOME INHIBITION RESCUES LOSS OF ROR1 PROTEIN AFTER UHRF1 SILENCING, SUGGESTING A ROLE FOR THE PROTEASOME IN THE UHRF1-ROR1 AXIS. FINALLY, WE SHOW THAT ROR1-POSITIVE CELLS ARE TWICE AS SENSITIVE TO THE UHRF1-TARGETING DRUG, NAPHTHAZARIN, AND UNDERGO INCREASED APOPTOSIS COMPARED TO ROR1-NEGATIVE CELLS. NAPHTHAZARIN ELICITS REDUCED EXPRESSION OF UHRF1 AND ROR1, AND COMBINATION OF NAPHTHAZARIN WITH INHIBITORS OF PRE-B CELL RECEPTOR SIGNALING RESULTS IN FURTHER REDUCTION OF CELL SURVIVAL COMPARED WITH EITHER INHIBITOR ALONE. THEREFORE, OUR WORK REVEALS A MECHANISM BY WHICH UHRF1 STABILIZES ROR1, SUGGESTING A POTENTIAL TARGETING STRATEGY TO INHIBIT ROR1 IN T(1;19) PRE-B-ALL AND OTHER MALIGNANCIES.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
8   16  36 4CRNA NEAT1 SPONGE ADSORPTION OF MIR-378 MODULATES ACTIVITY OF LIPOPOLYSACCHARIDE-TREATED ARTICULAR CHONDROCYTES AND INFLUENCES THE PATHOLOGICAL DEVELOPMENT OF OSTEOARTHRITIS. CONTEXT: OSTEOARTHRITIS (OA) IS A CHRONIC JOINT DISEASE THAT CAN EVENTUALLY LEAD TO DEGENERATION, FIBROSIS, FRACTURES, AND DEFECTS OF THE ARTICULAR CARTILAGE. LONG NON-CODING RNA (LNCRNA) IS A KEY SUBSTANCE IN MANY PROCESSES, SUCH AS EPIGENETIC REGULATION AND CELL-CYCLE AND CELL-DIFFERENTIATION MODULATION, AND ITS RELATIONSHIP WITH OA HAS BEEN REPEATEDLY VERIFIED. OBJECTIVE: THE STUDY INTENDED TO CLARIFY THE INFLUENCE OF LNCRNA NUCLEAR ENRICHED ABUNDANT TRANSCRIPT 1 (NEAT1), LNCRNA NEAT1, ON LIPOPOLYSACCHARIDE (LPS)-INDUCED OA CHONDROCYTES THROUGH SPONGE ADSORPTION OF MICRORNA-378 (MIR-378) AND TO PROVIDE NOVEL INSIGHTS INTO FUTURE DIAGNOSIS AND TREATMENT OF OA. DESIGN: THE RESEARCH TEAM PERFORMED AN ANIMAL STUDY. SETTING: THE STUDY TOOK PLACE IN THE DEPARTMENT OF REHABILITATION MEDICINE AT LINYI PEOPLE'S HOSPITAL IN LINYI, SHANGDONG, CHINA. ANIMALS: THE STUDY'S ANIMALS WERE 10 SPRAGUE DAWLEY (SD) RATS, 3-5 DAYS OLD AND 10-15 G IN WEIGHT, OF THE SPECIFIC-PATHOGEN-FREE (SPF) GRADE. INTERVENTION: THE RAT CHONDROCYTES FOR THE POSITIVE CONTROL GROUP (THE MODEL GROUP) WERE TREATED WITH 500 NG/ML OF LPS TO INDUCE OA. CHONDROCYTES TREATED WITH THE SAME AMOUNT OF NORMAL SALINE WERE USED AS THE NEGATIVE CONTROL GROUP. THE CHONDROCYTES OF THE LPS-INDUCED RATS WERE INTO SIX GROUPS: (1) A POSITIVE CONTROL GROUP TRANSFECTED WITH NEAT1-INTERFERING RNA, THE SH-NEAT1 GROUP; (2) A NEGATIVE CONTROL GROUP NOT TRANSFECTED WITH NEAT1-INTERFERING RNA, THE NEAT1 EMPTY VECTOR (NC-NEAT1) GROUP; (3) AN INTERVENTION GROUP CO-TRANSFECTED WITH NEAT1 INTERFERING RNA AND THE MIR-378 INHIBITOR SEQUENCE (INH-MIR-378 THE SH-NEAT1+ INH-MIR-378 GROUP; (4) A NEGATIVE CONTROL GROUP TRANSFECTED WITH NEAT1 INTERFERING RNA BUT NOT TRANSFECTED WITH THE MIR-378 INHIBITOR SEQUENCE, THE SH-NEAT1+ MIR-378 NEGATIVE CONTROL (NC-MIR-378) GROUP; (5) A NEGATIVE CONTROL GROUP TRANSFECTED WITH THE MIR-378 INHIBITOR SEQUENCE BUT NOT TRANSFECTED WITH NEAT1 INTERFERING RNA, THE NEAT1 EMPTY VECTOR (NC-NEAT1) + INH-MIR-378 GROUP; (6) A NEGATIVE CONTROL GROUP NOT TRANSFECTED WITH EITHER NEAT1 INTERFERING RNA OR THE MIR-378 INHIBITOR SEQUENCE, THE NC-NEAT1 + NC-MIR-378 GROUP. OUTCOME MEASURES: AN OA-CHONDROCYTE MODEL WAS INDUCED BY LPS AND MEASUREMENTS OF NEAT1 AND MIR-378 EXPRESSION WERE MADE BY REAL-TIME QUANTITATIVE REVERSE TRANSCRIPTION (QRT)- POLYMERASE CHAIN REACTION (PCR). THEN, SMALL NEAT1-INTERFERING RNA (SH-NEAT1), EMPTY VECTOR NEAT1 (NC-NEAT1), INHIBITOR-SEQUENCE-MIR-378 (INH-MIR-378), AND NEGATIVE-CONTROL-MIR-378 (NC-MIR-378) WERE TRANSFECTED INTO CELLS, AND CELL VIABILITY AND APOPTOSIS RATE WERE MEASURED. FINALLY, THE STUDY VERIFIED THE RELATIONSHIP BETWEEN NEAT1 AND MIR-378. RESULTS: COMPARED TO THE CONTROL GROUP, NEAT1 WAS SIGNIFICANTLY ELEVATED IN THE MODEL GROUP, AND ITS MIR-378 WAS SIGNIFICANTLY DECREASED. SILENCING NEAT1 CAN ENHANCE OA-CHONDROCYTE ACTIVITY AND DECREASE APOPTOSIS. WHEN NEAT1 AND MIR-378 WERE INHIBITED TOGETHER, AS SHOWN FORT THE NC-NEAT1 + NC-MIR-378 GROUP, NEAT1 EXPRESSION, AS WELL AS THE MULTIPLICATION AND APOPTOSIS ABILITY OF THE OA-MODEL CELLS, WERE THE SAME AS THOSE OF CELLS TRANSFECTED WITH AN EMPTY VECTOR, THE NC-NEAT1 GROUP. ALSO, THE NEAT1 + NC-MIR-378 GROUP'S CELL ACTIVITY WAS LOWER THAN THAT OF THE SH-NEAT1+NC-MIR-378 GROUP BUT HIGHER THAN THAT OF THE NC-NEAT1 + INH-MIR-378 GROUP. FINALLY, HIGHER FLUORESCENCE ACTIVITY OCCURRED FOR NEAT1-MUTANT TYPE (MUT) TRANSFECTED WITH INH-MIR-378. CONCLUSIONS: NEAT1, WHICH IS HIGHLY EXPRESSED IN OA, MEDIATES LPS-INDUCED OA-CHONDROCYTE ACTIVITY THROUGH SPONGE ADSORPTION OF MIR-378.	2022	

9 1791  23 EFFECT OF CHRONIC RADIATION ON THE FLAX (LINUM USITATISSIMUM L.) GENOME GROWN FOR SIX CONSECUTIVE GENERATIONS IN THE RADIOACTIVE CHERNOBYL AREA. THE GROWTH OF PLANTS UNDER CHRONIC RADIATION STRESS IN THE CHERNOBYL AREA MAY CAUSE CHANGES IN THE GENOME OF PLANTS. TO ASSESS THE EXTENT OF GENETIC AND EPIGENETIC CHANGES IN NUCLEAR DNA, SEEDS OF THE ANNUAL CROP FLAX (LINUM USITATISSIMUM L.) OF THE KYIVSKYI VARIETY, SOWN 21 YEARS AFTER THE ACCIDENT AND GROWN FOR SIX GENERATIONS IN RADIOACTIVE (RAD) AND REMEDIATED (REM) FIELDS WERE ANALYSED. FLAXSEED USED FOR SOWING FIRST GENERATION, WHICH SERVED AS A REFERENCE (REF), WAS ALSO ANALYSED. THE AFLP (AMPLIFIED FRAGMENT LENGTH POLYMORPHISM) REVEALED A HIGHER NUMBER OF SPECIFIC ECORI-MSEI LOCI (3.4-FOLD) IN POOLED FLAXSEED SAMPLES HARVESTED FROM THE RAD FIELD COMPARED WITH THE REM FIELD, INDICATING A LINK BETWEEN THE MUTATION PROCESS IN THE FLAX GENOME AND THE ONGOING ADAPTATION PROCESS. MSAP (METHYLATION-SENSITIVE AMPLIFIED POLYMORPHISM) DETECTING ECORI-MSPI AND ECORI-HPAII LOCI IN FLAX NUCLEAR DNA GENOME SHOWED NO SIGNIFICANT DIFFERENCES IN METHYLATION LEVEL, REACHING ABOUT 33% IN EACH OF THE GROUPS STUDIED. ON THE OTHER HAND, SIGNIFICANT CHANGES IN THE DNA METHYLATION PATTERN OF FLAXSEED SAMPLES HARVESTED FROM THE RAD FIELD COMPARED WITH CONTROLS WERE DETECTED. PAIRWISE F(ST) COMPARISON REVEALED WITHIN BOTH, ECORI-MSPI AND TRANSFORMED METHYLATION-SENSITIVE DATA SETS MORE THAN A 3-FOLD INCREASE OF GENETIC DIVERGENCE IN THE RAD FIELD COMPARED WITH BOTH CONTROLS. THESE RESULTS INDICATE THAT THE NUCLEAR GENOME OF FLAX EXPOSED TO CHRONIC RADIATION FOR SIX GENERATIONS HAS MORE MUTATIONS AND USES DNA METHYLATION AS ONE OF THE ADAPTATION MECHANISMS FOR SUSTAINABILITY UNDER ADVERSE CONDITIONS.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
10 3416  25 HTR1A, HTR1B, HTR2A, HTR2C AND HTR6 GENE POLYMORPHISMS AND EXTRAPYRAMIDAL SIDE EFFECTS IN HALOPERIDOL-TREATED PATIENTS WITH SCHIZOPHRENIA. SCHIZOPHRENIA IS A SERIOUS, CHRONIC PSYCHIATRIC DISORDER REQUIRING LIFELONG TREATMENT. EXTRAPYRAMIDAL SIDE EFFECTS (EPS) ARE COMMON ADVERSE REACTIONS TO ANTIPSYCHOTIC MEDICATIONS. IN ADDITION TO THE DOPAMINERGIC SYSTEM, SEROTONERGIC MECHANISMS, INCLUDING SEROTONIN (5-HT) RECEPTORS, MIGHT BE INVOLVED IN EPS DEVELOPMENT. THIS STUDY AIMED TO EXAMINE MOLECULAR ASSOCIATIONS OF HTR1A, HTR1B, HTR2A, HTR2C AND HTR6 GENE POLYMORPHISMS WITH ACUTE EPS IN 229 MALE SCHIZOPHRENIA PATIENTS, FOLLOWING TWO WEEKS OF HALOPERIDOL MONOTHERAPY. THE SIMPSON-ANGUS RATING SCALE FOR EXTRAPYRAMIDAL SIDE EFFECTS (SAS), BARNES AKATHISIA RATING SCALE (BARS) AND EXTRAPYRAMIDAL SYMPTOM RATING SCALE (ESRS) WERE USED TO EVALUATE EPS SEVERITY. GENOTYPING WAS PERFORMED USING REAL-TIME PCR, FOLLOWING EXTRACTION OF BLOOD DNA. SIGNIFICANT ACUTE EPS APPEARED IN 48.03% OF SCHIZOPHRENIA PATIENTS. FOR THE RS13212041 HTR1B GENE POLYMORPHISM, AFFECTING MICRORNA REGULATION OF HTR1B GENE EXPRESSION, A HIGHER FREQUENCY OF TT CARRIERS WAS FOUND AMONG HALOPERIDOL-TREATED PATIENTS WITH AKATHISIA WHEN COMPARED TO THE GROUP WITHOUT AKATHISIA SYMPTOMS. IN COMPARISON TO C-ALLELE CARRIERS, PATIENTS CARRYING THE TT GENOTYPE HAD HIGHER AKATHISIA SEVERITY, AS DETERMINED BY THE SAS, BARS AND ESRS SCALES. THESE MOLECULAR FINDINGS SUGGEST POTENTIAL INVOLVEMENT OF 5-HT(1B) RECEPTORS IN AKATHISIA DEVELOPMENT FOLLOWING HALOPERIDOL TREATMENT, AS WELL AS POSSIBLE EPIGENETIC MECHANISMS OF SEROTONERGIC MODULATION ASSOCIATED WITH ANTIPSYCHOTIC-INDUCED EPS.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
11 1217  30 CREG PROTECTS FROM MYOCARDIAL ISCHEMIA/REPERFUSION INJURY BY REGULATING MYOCARDIAL AUTOPHAGY AND APOPTOSIS. AIMS: HUMAN CELLULAR REPRESSOR OF E1A-STIMULATED GENES (CREG) IS A SECRETED GLYCOPROTEIN THAT REGULATES TISSUE AND CELL HOMEOSTASIS AND HAS BEEN SHOWN TO ANTAGONIZE HEART FIBROSIS, WHICH INDICATES A POTENTIAL PROTECTIVE EFFECT OF CREG AGAINST CARDIOMYOCYTE CHRONIC DAMAGE. HOWEVER, LITTLE IS KNOWN ABOUT THE ROLE OF CREG IN MYOCARDIAL TISSUE ACUTE INJURY, IN THIS STUDY, WE AIMED TO INVESTIGATE THE ROLE OF CREG IN MYOCARDIAL ISCHEMIA/REPERFUSION (MI/R) INJURY AND CLARIFY THE MECHANISM OF ACTION. METHODS AND RESULTS: WILD-TYPE CREG (CREG(+/+)), HETEROZYGOUS CREG (CREG(+/-)) MICE AND MICE PRETREATED WITH INFUSION OF RECOMBINANT 0.3MG/KG.D CREG PROTEIN (RECREG(+/+)) WERE SUBJECTED TO 30MIN OF LEFT ASCENDING CORONARY ISCHEMIA AND 24H OF REPERFUSION. EVAN'S BLUE-TRIPHENYL- TETRAZOLIUM CHLORIDE (TTC) SOLUTION AND ECHOCARDIOGRAPHY ANALYSIS WERE USED TO EVALUATE THE EFFECTS OF CREG ON MI/R MICE. THE UNDERLYING MECHANISMS WERE FURTHER DETERMINED BY CULTURED MYOCARDIAL CELLS IN VITRO. OUR FINDINGS REVEALED THAT THE LEVEL OF CREG PROTEIN IN MOUSE HEARTS WAS SIGNIFICANTLY DECREASED AFTER MICE WERE SUBJECTED TO MI/R. MOREOVER, CREG(+/-) MICE HAD LARGER INFARCTION SIZE 2H AFTER REPERFUSION AND WORSE CARDIAC FUNCTION 28DAYS AFTER MI/R INJURY COMPARED TO THAT IN CREG(+/+) MICE. HOWEVER, RECREG(+/+) MICE COULD MAINTAIN CREG AT A HIGH LEVEL EVEN AFTER MI/R INJURY, AND MITIGATED INFARCTION SIZE AND IMPROVED CARDIAC FUNCTION SIGNIFICANTLY. IN CREG(+/-) MICE, MYOCARDIAL AUTOPHAGY WAS DYSFUNCTIONAL CHARACTERIZED BY ACCUMULATION OF LC3A AND P62, WHILE APOPTOTIC CELL NUMBER INCREASE WAS DETECTED BY CLEAVED CASPASE-3 BLOTTING AND TUNEL STAINING. CONVERSELY, DECREASED APOPTOSIS AND ACTIVATED AUTOPHAGY WERE DETECTED IN RECREG(+/+) MICE. FURTHERMORE, CHLOROQUINE, A KIND OF AUTOPHAGY BLOCKER, WAS USED TO DEMONSTRATE RECOMBINANT CREG PROTECTED CARDIOMYOCYTES AGAINST APOPTOSIS MEDIATED BY ACTIVATING AUTOPHAGY BOTH IN VIVO AND IN VITRO. FINALLY, WE FOUND CREG WAS INVOLVED INTO LYSOSOMAL PROTEIN TRANSFER AND IMPROVE CELLULAR AUTOPHAGY. CONCLUSION: CREG PROTECTS HEART AGAINST MI/R INJURY-INDUCED CARDIOMYOCYTES APOPTOSIS BY ACTIVATING LYSOSOMAL AUTOPHAGY. THIS ARTICLE IS PART OF A SPECIAL ISSUE ENTITLED: GENETIC AND EPIGENETIC CONTROL OF HEART FAILURE - EDITED BY JUN REN AND MEGAN YINGMEI ZHANG.	2017	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
12 2796  18 FBW7 MEDIATES SENESCENCE AND PULMONARY FIBROSIS THROUGH TELOMERE UNCAPPING. TISSUE STEM CELLS UNDERGO PREMATURE SENESCENCE UNDER STRESS, PROMOTING AGE-RELATED DISEASES; HOWEVER, THE ASSOCIATED MECHANISMS REMAIN UNCLEAR. HERE, WE REPORT THAT IN RESPONSE TO RADIATION, OXIDATIVE STRESS, OR BLEOMYCIN, THE E3 UBIQUITIN LIGASE FBW7 MEDIATES CELL SENESCENCE AND TISSUE FIBROSIS THROUGH TELOMERE UNCAPPING. FBW7 BINDING TO TELOMERE PROTECTION PROTEIN 1 (TPP1) FACILITATES TPP1 MULTISITE POLYUBIQUITINATION AND ACCELERATES DEGRADATION, TRIGGERING TELOMERE UNCAPPING AND DNA DAMAGE RESPONSE. OVEREXPRESSING TPP1 OR INHIBITING FBW7 BY GENETIC ABLATION, EPIGENETIC INTERFERENCE, OR PEPTIDOMIMETIC TELOMERE DYSFUNCTION INHIBITOR (TELODIN) REDUCES TELOMERE UNCAPPING AND SHORTENING, EXPANDING THE PULMONARY ALVEOLAR AEC2 STEM CELL POPULATION IN MICE. TELODIN, SYNTHESIZED FROM THE SEVENTH BETA STRAND BLADE OF FBW7 WD40 PROPELLER DOMAIN, INCREASES TPP1 STABILITY, LUNG RESPIRATORY FUNCTION, AND RESISTANCE TO SENESCENCE AND FIBROSIS IN ANIMALS CHRONICALLY EXPOSED TO ENVIRONMENTAL STRESS. OUR FINDINGS ELUCIDATE A PIVOTAL MECHANISM UNDERLYING STRESS-INDUCED PULMONARY EPITHELIAL STEM CELL SENESCENCE AND FIBROSIS, PROVIDING A FRAMEWORK FOR AGING-RELATED DISORDER INTERVENTIONS.	2020	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
13 3305  27 HIGH-LEVEL EXPRESSION OF BCL3 DIFFERENTIATES T(2;5)(P23;Q35)-POSITIVE ANAPLASTIC LARGE CELL LYMPHOMA FROM HODGKIN DISEASE. ANAPLASTIC LARGE CELL LYMPHOMA (ALCL) WITH T(2;5)(P23;Q35) AND HODGKIN DISEASE (HD) SHARE MANY CELLULAR FEATURES, INCLUDING EXPRESSION OF CD30. WE COMPARED GENE EXPRESSION PROFILES OF 4 ALCL (KARPAS 299, SU-DHL-1, DEL, SR-786) AND 3 HD CELL LINES AND FOUND THAT BCL3, WHICH ENCODES A NUCLEAR PROTEIN BELONGING TO THE I KAPPA B FAMILY OF INHIBITORS OF NUCLEAR FACTOR-KAPPA B (NF-KAPPA B) TRANSCRIPTIONAL FACTORS, WAS EXPRESSED AT HIGHER LEVELS IN ALCL THAN HD. NORTHERN AND WESTERN BLOTTING ANALYSES CONFIRMED THE HIGH-LEVEL EXPRESSION OF BCL3 IN ALCL AT BOTH MRNA AND PROTEIN LEVELS. WE ESTABLISHED A REAL-TIME REVERSE TRANSCRIPTASE-MEDIATED POLYMERASE CHAIN REACTION ASSAY TO MEASURE THE BCL3 MRNA LEVEL AND FOUND A PREDOMINANT LEVEL OF BCL3 EXPRESSION IN T(2;5)(+) ALCL; THE LEVELS OF CELL LINES AND CLINICAL MATERIALS WERE COMPARABLE TO OR HIGHER THAN THAT OF A B-CELL CHRONIC LYMPHOCYTIC LEUKEMIA CARRYING T(14;19)(Q32;Q13). SOUTHERN BLOTTING AND FLUORESCENCE IN SITU HYBRIDIZATION DISCLOSED THAT THE BCL3 GENE COPIES WERE AMPLIFIED IN SU-DHL-1, WHEREAS KARPAS 299 CARRIED 4 BCL3 GENE LOCI. THE BCL3 GENE CONTAINS 2 CYTOSINE-GUANINE DINUCLEOTIDE (CPG) ISLANDS, AND THE INTRAGENIC 3' CPG WAS ENTIRELY DEMETHYLATED IN SU-DHL-1 AND DEL. IN CONTRAST TO HD, IN WHICH NF-KAPPA B WAS CONSTITUTIVELY ACTIVATED, ALCL CELLS CONSISTENTLY SHOWED (P50)(2) HOMODIMER BINDING ACTIVITY ON ELECTROPHORETIC MOBILITY SHIFT ASSAY. IT IS SUGGESTED THAT THE HIGH-LEVEL NUCLEAR BCL-3 SEQUESTERS THE (P50)(2) HOMODIMER TO THE NUCLEUS, WHICH MAY ACCOUNT FOR THE CONTRADICTORY EFFECT OF CD30 STIMULATION ON ALCL AND HD. WE PROPOSE THAT BCL3 IS OVEREXPRESSED BY GENETIC AND EPIGENETIC MODIFICATIONS, POTENTIALLY CONTRIBUTING TO THE DEVELOPMENT OF T(2;5)(+) ALCL.	2003	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
14 2134  32 EPIGENETIC INACTIVATION OF THE MIR129-2 IN HEMATOLOGICAL MALIGNANCIES. BACKGROUND: MIR129-2 HAS BEEN SHOWN TO BE A TUMOR SUPPRESSOR MICRORNA HYPERMETHYLATED IN EPITHELIAL CANCERS. PATIENTS AND METHODS: EPIGENETIC INACTIVATION OF MIR129-2 WAS STUDIED BY METHYLATION-SPECIFIC PCR (MSP) IN 13 CELL LINES (EIGHT MYELOMA AND FIVE LYMPHOMA), 15 NORMAL CONTROLS AND 344 PRIMARY SAMPLES INCLUDING ACUTE MYELOID LEUKEMIA (AML), ACUTE LYMPHOBLASTIC LEUKEMIA (ALL), CHRONIC MYELOID LEUKEMIA (CML), CHRONIC LYMPHOCYTIC LEUKEMIA (CLL), NON-HODGKIN'S LYMPHOMA (NHL), MULTIPLE MYELOMA (MM) AT DIAGNOSIS, MM AT RELAPSE/PROGRESSION, AND MONOCLONAL GAMMOPATHY OF UNDETERMINED SIGNIFICANCE (MGUS). EXPRESSION OF MIR129 AND ITS TARGET, SOX4, IN CELL LINES WAS MEASURED BEFORE AND AFTER HYPOMETHYLATING TREATMENT AND MIR129 OVEREXPRESSION. MIR129 EXPRESSION WAS CORRELATED WITH MIR129-2 METHYLATION STATUS IN PRIMARY LYMPHOMA SAMPLES. TUMOR SUPPRESSOR FUNCTION OF MIR129 WAS DEMONSTRATED BY MTT AND TRYPAN BLUE EXCLUSION ASSAY AFTER MIR129 OVEREXPRESSION. RESULTS: THE SENSITIVITY OF THE METHYLATED-MSP WAS ONE IN 10(3). DIFFERENT MSP STATUSES, INCLUDING COMPLETE METHYLATION, PARTIAL METHYLATION, AND COMPLETE UNMETHYLATION, WERE VERIFIED BY QUANTITATIVE BISULFITE PYROSEQUENCING. ALL FIVE LYMPHOMA AND SEVEN OF EIGHT MYELOMA CELL LINES SHOWED COMPLETE AND PARTIAL MIR129-2 METHYLATION. IN PRIMARY SAMPLES, MIR129-2 METHYLATION WAS ABSENT IN AML AND CML, BUT DETECTED IN 5% ALL, 45.9% CLL, 49.5% MM AT DIAGNOSIS, AND 59.1% NHL. IN CLL, MIR129-2 METHYLATION ADVERSELY IMPACTED ON SURVIVAL (P=0.004). IN MM, MIR129-2 METHYLATION INCREASED FROM 27.5% MGUS TO 49.5% MM AT DIAGNOSIS AND 41.5% AT RELAPSE/PROGRESSION (P=0.023). IN NHL, MIR129-2 METHYLATION WAS ASSOCIATED WITH MIR124-1 AND MIR203 METHYLATION (P<0.001), AND LOWER MIR129 EXPRESSION (P=0.009). HYPOMETHYLATION TREATMENT OF JEKO-1, HOMOZYGOUSLY METHYLATED FOR MIR129-2, LED TO MIR129-2 DEMETHYLATION AND MIR129 RE-EXPRESSION, WITH DOWNREGULATION OF SOX4 MRNA. MOREOVER, MIR129 OVEREXPRESSION IN BOTH MANTLE CELL LINES, JEKO-1 AND GRANTA-519, INHIBITED CELLULAR PROLIFERATION AND ENHANCED CELL DEATH, WITH CONCOMITANT SOX4 MRNA DOWNREGULATION. CONCLUSIONS: MIR129-2 IS A TUMOR SUPPRESSIVE MICRORNA FREQUENTLY METHYLATED IN LYMPHOID BUT NOT MYELOID MALIGNANCIES, LEADING TO REVERSIBLE MIR129-2 SILENCING. IN CLL, MIR129-2 METHYLATION WAS ASSOCIATED WITH AN INFERIOR SURVIVAL. IN MM, MIR129-2 METHYLATION MIGHT BE ACQUIRED DURING PROGRESSION FROM MGUS TO SYMPTOMATIC MM. IN NHL, MIR129-2 METHYLATION MIGHT COLLABORATE WITH MIR124-1 AND MIR203 METHYLATION IN LYMPHOMAGENESIS.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
15 4527  21 MULTIGENERATIONAL EFFECTS OF 4-METHYLBENZYLIDENE CAMPHOR (4-MBC) ON THE SURVIVAL, DEVELOPMENT AND REPRODUCTION OF THE MARINE COPEPOD TIGRIOPUS JAPONICUS. ONE OF THE MOST WIDELY USED ORGANIC UV FILTERS, 4-METHYLBENZYLIDENE CAMPHOR (4-MBC), IS PRESENT AT HIGH CONCENTRATIONS IN OFFSHORE WATERS. THE MARINE COPEPOD TIGRIOPUS JAPONICUS WAS EXPOSED TO DIFFERENT CONCENTRATIONS OF 4-MBC (I.E., 0, 0.5, 1, 5 AND 10MUGL(-1)) FOR 4 CONSECUTIVE GENERATIONS (F0-F3) TO EVALUATE THE IMPACT OF 4-MBC ON MARINE ECOSYSTEMS. THE RESULTS SHOWED THAT IN THE F0 GENERATION, 4-MBC CAUSED SIGNIFICANT LETHAL TOXICITY IN T. JAPONICAS AT CONCENTRATIONS OF 5 AND 10MUGL(-1) AND THE NAUPLII WERE MORE SENSITIVE TO 4-MBC TOXICITY THAN THE ADULTS. HOWEVER IN THE F1-F3 GENERATIONS, 4-MBC EXPOSURE DID NOT AFFECT THE SURVIVAL RATE. THE HATCHING RATE AND THE DEVELOPMENTAL DURATION FROM THE NAUPLII TO THE COPEPODITE (N-C) AND FROM THE NAUPLII TO ADULT (N-A) DECREASED SIGNIFICANTLY IN THE F1-F2 GENERATIONS AND IN THE F2-F3 GENERATIONS, RESPECTIVELY, EVEN AT THE LOWEST EXPOSURE CONCENTRATION (0.5MUGL(-1)). IN THE SUBSEQUENT TWO GENERATIONS (I.E., THE F4-F5 GENERATIONS) OF RECOVERY EXPOSURE IN CLEAN SEAWATER, THE GROWTH RATES OF THE ORIGINAL 4-MBC EXPOSURE GROUPS WERE STILL FASTER THAN THE CONTROL IN BOTH THE N-C AND N-A STAGES, SUGGESTING POSSIBLE TRANSGENERATIONAL GENETIC AND/OR EPIGENETIC CHANGES UPON CHRONIC 4-MBC EXPOSURE. THE EXPRESSION OF THE ECDYSONE RECEPTOR GENE WAS UP-REGULATED BY 4-MBC, WHICH WAS CONSISTENT WITH THE DECREASE OF THE N-C/N-A DURATION. IN ADDITION, 4-MBC MAY INDUCE OXIDATIVE STRESS AND TRIGGER APOPTOSIS IN T. JAPONICAS, RESULTING IN DEVELOPMENTAL, REPRODUCTIVE AND EVEN LETHAL TOXICITY. A PRELIMINARY RISK ASSESSMENT SUGGESTED THAT UNDER ENVIRONMENTALLY REALISTIC CONCENTRATIONS, 4-MBC HAD SIGNIFICANT POTENTIAL TO POSE A THREAT TO MARINE CRUSTACEANS AND MARINE ECOSYSTEMS.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
16  850  29 CHILDREN WITH CHRONIC IMMUNE THROMBOCYTOPENIA EXHIBIT HIGH EXPRESSION OF HUMAN ENDOGENOUS RETROVIRUSES TRIM28 AND SETDB1. CHRONIC IMMUNE THROMBOCYTOPENIA (CITP) IS AN AUTOIMMUNE DISEASE WHOSE UNDERLYING BIOLOGIC MECHANISMS REMAIN ELUSIVE. HUMAN ENDOGENOUS RETROVIRUSES (HERVS) DERIVE FROM ANCESTRAL INFECTIONS AND CONSTITUTE ABOUT 8% OF OUR GENOME. A WEALTH OF CLINICAL AND EXPERIMENTAL STUDIES HIGHLIGHTS THEIR PIVOTAL PATHOGENETIC ROLE IN AUTOIMMUNE DISEASES. EPIGENETIC MECHANISMS, SUCH AS THOSE MODULATED BY TRIM28 AND SETDB1, ARE INVOLVED IN HERV ACTIVATION AND REGULATION OF IMMUNE RESPONSE. WE ASSESSED, THROUGH A POLYMERASE CHAIN REACTION REAL-TIME TAQMAN AMPLIFICATION ASSAY, THE TRANSCRIPTION LEVELS OF POL GENES OF HERV-H, HERV-K, AND HERV-W; ENV GENES OF SYNCYTIN (SYN)1, SYN2, AND HERV-W; AS WELL AS TRIM28 AND SETDB1 IN WHOLE BLOOD FROM 34 CHILDREN WITH CITP AND AGE-MATCHED HEALTHY CONTROLS (HC). THE TRANSCRIPTIONAL LEVELS OF ALL HERV SEQUENCES, WITH THE EXCEPTION OF HERV-W-ENV, WERE SIGNIFICANTLY ENHANCED IN CHILDREN WITH CITP AS COMPARED TO HC. PATIENTS ON ELTROMBOPAG TREATMENT EXHIBITED LOWER EXPRESSION OF SYN1, SYN2, AND HERV-W-ENV AS COMPARED TO UNTREATED PATIENTS. THE MRNA CONCENTRATIONS OF TRIM28 AND SETDB1 WERE SIGNIFICANTLY HIGHER AND WERE POSITIVELY CORRELATED WITH THOSE OF HERVS IN CITP PATIENTS. THE OVER-EXPRESSIONS OF HERVS AND TRIM28/SETDB1 AND THEIR POSITIVE CORRELATIONS IN PATIENTS WITH CITP ARE SUGGESTIVE CLUES OF THEIR CONTRIBUTION TO THE PATHOGENESIS OF THE DISEASE AND SUPPORT INNOVATIVE INTERVENTIONS TO INHIBIT HERV AND TRIM28/SETDB1 EXPRESSIONS IN PATIENTS UNRESPONSIVE TO STANDARD THERAPIES.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
17 3903  31 LEP, LDLR AND APOA4 GENE POLYMORPHISMS AND THEIR RELATIONSHIP WITH THE RISK OF OVERWEIGHT, OBESITY AND CHRONIC DISEASES IN ADULTS OF THE STATE OF SUCRE, VENEZUELA. INTRODUCTION: OVERWEIGHT, OBESITY AND SOME CHRONIC DISEASES HAVE BECOME MORE PREVALENT RECENTLY. IT IS WELL KNOWN THAT THEIR CAUSES MAY BE GENETIC, EPIGENETIC, ENVIRONMENTAL, OR A MIXTURE OF THESE. OBJECTIVE: TO ANALYZE THE RELATIONSHIP BETWEEN NINE SINGLE NUCLEOTIDE POLYMORPHISMS OF GENES LEP (RS2167270), LDLR (RS885765, RS688, RS5925, RS55903358, RS5742911) AND APOA4 (RS5095, RS675, RS5110) WITH OBESITY-RELATED PHENOTYPES AND OTHER COMORBIDITIES. MATERIAL AND METHODS: WE RECRUITED 144 ADULTS (76 MALES AND 68 FEMALES, WITH AVERAGE AGES OF 29.93+/-8.29 AND 32.49+/-11.15 YEARS, RESPECTIVELY) IN THE STATE OF SUCRE, VENEZUELA. CLINICAL AND ANTHROPOMETRIC PARAMETERS WERE OBTAINED. GENOTYPE-RISK ASSOCIATIONS WERE STUDIED. WE THEN COMPARED THE AVERAGES REGISTERED FOR ANTHROPOMETRIC AND BIOCHEMICAL VARIABLES PREVIOUSLY ADJUSTED FOR BIOLOGICAL AND ENVIRONMENTAL FACTORS. RESULTS: ACCORDING TO THE BODY MASS INDEX, 38.9% OF THE INDIVIDUALS IN THE SAMPLE WERE OVERWEIGHT (25</=BMI</=29.9 KG/M2) AND 20.1% WERE OBESE (BMI>/=30 KG/M2). GENOTYPE AND ALLELE FREQUENCIES DID NOT DIFFER STATISTICALLY FOR GROUPS WITH NORMAL AND HIGH BODY MASS INDEX (OVERWEIGHT PLUS OBESITY). THE ASSOCIATION BETWEEN LDLR RS5742911 ANCESTRAL GENOTYPE A/A AND HIGH RISK CONDITION RELATED TO HDL-CHOLESTEROL WAS THE ONLY ONE FOUND TO BE SIGNIFICANT (OR=2.944, 95% CI: 1.446-5.996; P=0.003). THE DIFFERENCE IN ADJUSTED MEAN HDL-CHOLESTEROL FOR LDLR RS5742911 GENOTYPES WAS STATISTICALLY SIGNIFICANT (P=0.005) (A/A: 41.50+/-14.81 MG/DL; A/G: 45.00+/-12.07 MG/DL; G/G: 47.17+/-9.43 MG/DL). CONCLUSIONS: FOR MOST OF THE GENETIC VARIANTS STUDIED, THERE WAS AN ASSOCIATION WITH THE PRESENCE OF OVERWEIGHT AND OBESITY AMONG ANCESTRAL GENOTYPE CARRIERS, ALTHOUGH THIS WAS NOT STATISTICALLY SIGNIFICANT. THE RS5742911 POLYMORPHISM MAY BE USEFUL AS AN INDICATOR OF A RISK OF CHRONIC DISEASES.	2016	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
18 1496  23 DNA IS HYPOMETHYLATED IN CIRCADIAN MANIFESTATIONS OF BRUXISM. OBJECTIVE: THE AIM OF THIS STUDY WAS TO COMPARE THE GLOBAL DNA METHYLATION LEVELS IN PATIENTS UNDER BRUXISM TREATMENT AND A CONTROL GROUP. METHODS: SUBJECTS UNDERGOING BRUXISM TREATMENT WERE CLASSIFIED IN AWAKE BRUXISM (42 PATIENTS), SLEEP BRUXISM (32 PATIENTS) AND BOTH CONDITIONS (42 PATIENTS). THE CONTROL GROUP INCLUDED 42 INDIVIDUALS. A COLORIMETRIC ASSAY (METHYLFLASH METHYLATED DNA 5-MC QUANTIFICATION KIT, EPIGENETIC GROUP INC., NY, USA) WAS USED TO DETERMINE THE GLOBAL DNA METHYLATION LEVELS. RESULTS: STATISTICALLY SIGNIFICANT DIFFERENCES WERE FOUND IN AMOUNTS OF METHYLATED DNA IN ALL CIRCADIAN MANIFESTATIONS OF BRUXISM COMPARED WITH A CONTROL GROUP (SLEEP BRUXISM = 0.95% +/- 2.02%; AWAKE BRUXISM = 0.87% +/- 2.1%; SLEEP AND AWAKE BRUXISM = 0.17% +/- 0.25%; CONTROL = 1.69% +/- 1.6%; KRUSKAL-WALLIS TEST [P = .0001] FOLLOWED BY DUNN'S TEST [P < .05]). CONCLUSION: PATIENTS UNDERGOING BRUXISM TREATMENT EXHIBITED HYPOMETHYLATED DNA LEVELS WHEN COMPARED TO CONTROL GROUP. OUR RESULTS SUGGEST THAT DNA HYPOMETHYLATION MIGHT BE A NOVEL AETIOLOGIC FACTOR IN BRUXISM AETIOLOGY. FURTHER RESEARCHES MUST BE PERFORMED EXPLORING THE ROLE OF EPIGENETICS MODIFICATIONS IN CIRCADIAN MANIFESTATIONS OF BRUXISM.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
19 3279  24 HERITABLE ALTERATION IN DNA METHYLATION INDUCED BY NITROGEN-DEFICIENCY STRESS ACCOMPANIES ENHANCED TOLERANCE BY PROGENIES TO THE STRESS IN RICE (ORYZA SATIVA L.). CYTOSINE METHYLATION IS RESPONSIVE TO VARIOUS BIOTIC- AND ABIOTIC-STRESSES, WHICH MAY PRODUCE HERITABLE EPIALLELES. NITROGEN (N)-DEFICIENCY IS AN ABIOTIC STRESS BEING REPEATEDLY EXPERIENCED BY PLANTS. TO ADDRESS POSSIBLE EPIGENETIC CONSEQUENCES OF N-DEFICIENCY-STRESS, WE INVESTIGATED THE STABILITY OF CYTOSINE METHYLATION IN RICE (ORYZA SATIVA L.) SUBSEQUENT TO A CHRONIC (A WHOLE-GENERATION) N-DEFICIENCY AT TWO LEVELS, MODERATE (20MG/L) AND SEVERE (10MG/L), UNDER HYDROPONIC CULTURE. MSAP ANALYSIS REVEALED THAT LOCUS-SPECIFIC METHYLATION ALTERATION OCCURRED IN LEAF-TISSUE OF THE STRESSED PLANTS (S(0)) EXPERIENCING EITHER LEVEL OF N-DEFICIENCY, WHICH WAS VALIDATED BY GEL-BLOTTING. ANALYSIS ON THREE NON-STRESSED SELF-FED PROGENIES (S(1), S(2) AND S(3)) BY GEL-BLOTTING INDICATED THAT CA. 50% OF THE ALTERED METHYLATION PATTERNS IN SOMATIC CELLS (LEAF) OF THE STRESSED S(0) PLANTS WERE RECAPTURED IN S(1), WHICH WERE THEN STABLY INHERITED TO S(2) AND S(3). BISULFITE SEQUENCING OF TWO VARIANT MSAP LOCI WITH HOMOLOGY TO LOW-COPY RETROTRANSPOSONS ON ONE STRESSED PLANT (S(0)) AND ITS NON-STRESSED PROGENIES (S(1) AND S(2)) SHOWED THAT WHEREAS ONE LOCUS EXHIBITED LIMITED AND NON-HERITABLE CHH METHYLATION ALTERATION, THE OTHER LOCUS MANIFESTED DRAMATIC HERITABLE HYPERMETHYLATION AT NEARLY ALL CYTOSINE SITES WITHIN THE ASSAYED REGION. INTRIGUINGLY, WHEN TWO GROUPS OF S(2) PLANTS DESCENDED FROM THE SAME N-DEFICIENCY-STRESSED S(0) PLANT WERE RE-SUBJECTED TO THE STRESS, THE GROUP INHERITING THE MODIFIED METHYLATION PATTERNS SHOWED ENHANCED TOLERANCE TO THE N-DEFICIENCY-STRESS COMPARED WITH THE GROUP BEARING THE ORIGINAL PATTERNS. OUR RESULTS THUS DEMONSTRATE HERITABILITY OF AN ACQUIRED ADAPTIVE TRAIT IN RICE, WHICH WAS ACCOMPANIED BY EPIGENETIC INHERITANCE OF MODIFIED CYTOSINE METHYLATION PATTERNS, IMPLICATING AN EPIGENETIC BASIS UNDERLYING THE INHERITANCE OF AN ACQUIRED TRAIT IN PLANTS.	2011	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
20 1171  22 CONTRIBUTION OF MATURE HEPATOCYTES TO BILIARY REGENERATION IN RATS WITH ACUTE AND CHRONIC BILIARY INJURY. WHETHER HEPATOCYTES CAN CONVERT INTO BILIARY EPITHELIAL CELLS (BECS) DURING BILIARY INJURY IS MUCH DEBATED. TO TEST THIS CONCEPT, WE TRACED THE FATE OF GENETICALLY LABELED [DIPEPTIDYL PEPTIDASE IV (DPPIV)-POSITIVE] HEPATOCYTES IN HEPATOCYTE TRANSPLANTATION MODEL FOLLOWING ACUTE HEPATO-BILIARY INJURY INDUCED BY 4,4'-METHYLENE-DIANILINE (DAPM) AND D-GALACTOSAMINE (DAPM+D-GAL) AND IN DPPIV-CHIMERIC LIVER MODEL SUBJECTED TO ACUTE (DAPM+D-GAL) OR CHRONIC BILIARY INJURY CAUSED BY DAPM AND BILE DUCT LIGATION (DAPM+BDL). IN BOTH MODELS BEFORE BILIARY INJURY, BECS ARE UNIFORMLY DPPIV-DEFICIENT AND PROLIFERATION OF DPPIV-DEFICIENT HEPATOCYTES IS RESTRICTED BY RETRORSINE. WE FOUND THAT MATURE HEPATOCYTES UNDERWENT A STEPWISE CONVERSION INTO BECS AFTER BILIARY INJURY. IN THE HEPATOCYTE TRANSPLANTATION MODEL, DPPIV-POSITIVE HEPATOCYTES ENTRAPPED PERIPORTALLY PROLIFERATED, AND FORMED TWO-LAYERED PLATES ALONG PORTAL VEINS. WITHIN THE TWO-LAYERED PLATES, THE HEPATOCYTES GRADUALLY LOST THEIR HEPATOCYTIC IDENTITY, PROCEEDED THROUGH AN INTERMEDIATE STATE, ACQUIRED A BILIARY PHENOTYPE, AND SUBSEQUENTLY FORMED BILE DUCTS ALONG THE HILUM-TO-PERIPHERY AXIS. IN DPPIV-CHIMERIC LIVER MODEL, PERIPORTAL HEPATOCYTES EXPRESSING HEPATOCYTE NUCLEAR FACTOR-1BETA (HNF-1BETA) WERE EXCLUSIVELY DPPIV-POSITIVE AND WERE IN CONTINUITY TO DPPIV-POSITIVES BILE DUCTS. INHIBITION OF HEPATOCYTE PROLIFERATION BY ADDITIONAL DOSES OF RETRORSINE IN DPPIV-CHIMERIC LIVERS PREVENTED THE APPEARANCE OF DPPIV-POSITIVE BECS AFTER BILIARY INJURY. MOREOVER, ENRICHED DPPIV-POSITIVE BEC/HEPATIC OVAL CELL TRANSPLANTATION PRODUCED DPPIV-POSITIVE BECS OR BILE DUCTS IN UNEXPECTEDLY LOW FREQUENCY AND IN MID-LOBULAR REGIONS. THESE RESULTS TOGETHER SUGGEST THAT MATURE HEPATOCYTES BUT NOT CONTAMINATING BECS/HEPATIC OVAL CELLS ARE THE SOURCES OF PERIPORTAL DPPIV-POSITIVE BECS. WE CONCLUDE THAT MATURE HEPATOCYTES CONTRIBUTE TO BILIARY REGENERATION IN THE ENVIRONMENT OF ACUTE AND CHRONIC BILIARY INJURY THROUGH A DUCTAL PLATE CONFIGURATION WITHOUT THE NEED OF EXOGENOUSLY GENETIC OR EPIGENETIC MANIPULATION.	2015