1 3239 127 HEPATIC INACTIVATION OF THE TYPE 2 DEIODINASE CONFERS RESISTANCE TO ALCOHOLIC LIVER STEATOSIS. BACKGROUND: A MOUSE WITH HEPATOCYTE-SPECIFIC DEIODINASE TYPE II INACTIVATION (ALB-D2KO) IS RESISTANT TO DIET-INDUCED OBESITY, HEPATIC STEATOSIS, AND HYPERTRIGLYCERIDEMIA DUE TO PERINATAL EPIGENETIC MODIFICATIONS IN THE LIVER. THIS PHENOTYPE IS LINKED TO LOW LEVELS OF ZFP125, A HEPATIC TRANSCRIPTIONAL REPRESSOR THAT PROMOTES LIVER STEATOSIS BY INHIBITING GENES INVOLVED IN PACKAGING AND SECRETION OF VERY-LOW-DENSITY LIPOPROTEIN. METHODS: HERE, WE USED CHRONIC AND BINGE ETHANOL (ETOH) IN MICE TO CAUSE LIVER STEATOSIS. RESULTS: THE ETOH TREATMENT CAUSES A 2.3-FOLD INCREASE IN HEPATIC TRIGLYCERIDE CONTENT; ZFP125 LEVELS WERE APPROXIMATELY 50% HIGHER IN THESE ANIMALS. IN CONTRAST, ALB-D2KO MICE DID NOT DEVELOP ETOH-INDUCED LIVER STEATOSIS. THEY ALSO FAILED TO ELEVATE ZFP125 TO THE SAME LEVELS, DESPITE BEING ON THE ETOH-CONTAINING DIET FOR THE SAME PERIOD OF TIME. THEIR PHENOTYPE WAS ASSOCIATED WITH 1.3- TO 2.9-FOLD UP-REGULATION OF HEPATIC GENES INVOLVED IN LIPID TRANSPORT AND EXPORT THAT ARE NORMALLY REPRESSED BY ZFP125, THAT IS, MTTP, ABCA1, LDLR, APOC1, APOC3, APOE, APOH, AND AZGP1. FURTHERMORE, GENES INVOLVED IN THE ETOH METABOLIC PATHWAY, THAT IS, ALDH2 AND ACSS2, WERE ALSO 1.6- TO 3.1-FOLD UP-REGULATED IN ALB-D2KO ETOH MICE COMPARED WITH CONTROL ANIMALS KEPT ON ETOH. CONCLUSIONS: ETOH CONSUMPTION ELEVATES EXPRESSION OF ZFP125. ALB-D2KO ANIMALS, WHICH HAVE LOWER LEVELS OF ZFP125, ARE MUCH LESS SUSCEPTIBLE TO ETOH-INDUCED LIVER STEATOSIS.	2019	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
2 2640  29 EPIGENOMIC AND TRANSCRIPTIONAL PROFILING IDENTIFIES IMPAIRED GLYOXYLATE DETOXIFICATION IN NAFLD AS A RISK FACTOR FOR HYPEROXALURIA. EPIGENETIC MODIFICATIONS (E.G. DNA METHYLATION) IN NAFLD AND THEIR CONTRIBUTION TO DISEASE PROGRESSION AND EXTRAHEPATIC COMPLICATIONS ARE POORLY EXPLORED. HERE, WE USE AN INTEGRATED EPIGENOME AND TRANSCRIPTOME ANALYSIS OF MOUSE NAFLD HEPATOCYTES AND IDENTIFY ALTERATIONS IN GLYOXYLATE METABOLISM, A PATHWAY RELEVANT IN KIDNEY DAMAGE VIA OXALATE RELEASE-A HARMFUL WASTE PRODUCT AND KIDNEY STONE-PROMOTING FACTOR. DOWNREGULATION AND HYPERMETHYLATION OF ALANINE-GLYOXYLATE AMINOTRANSFERASE (AGXT), WHICH DETOXIFIES GLYOXYLATE, PREVENTING EXCESSIVE OXALATE ACCUMULATION, IS ACCOMPANIED BY INCREASED OXALATE FORMATION AFTER METABOLISM OF THE PRECURSOR HYDROXYPROLINE. VIRAL-MEDIATED AGXT TRANSFER OR INHIBITING HYDROXYPROLINE CATABOLISM RESCUES EXCESSIVE OXALATE RELEASE. IN HUMAN STEATOTIC HEPATOCYTES, AGXT IS ALSO DOWNREGULATED AND HYPERMETHYLATED, AND IN NAFLD ADOLESCENTS, STEATOSIS SEVERITY CORRELATES WITH URINARY OXALATE EXCRETION. THUS, THIS WORK IDENTIFIES A REDUCED CAPACITY OF THE STEATOTIC LIVER TO DETOXIFY GLYOXYLATE, TRIGGERING ELEVATED OXALATE, AND PROVIDES A MECHANISTIC EXPLANATION FOR THE INCREASED RISK OF KIDNEY STONES AND CHRONIC KIDNEY DISEASE IN NAFLD PATIENTS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
3 5487  29 REVERSIBLE ALTERATION IN THE EXPRESSION OF THE GAP JUNCTIONAL PROTEIN CONNEXIN 32 DURING TUMOR PROMOTION IN RAT LIVER AND ITS ROLE DURING CELL PROLIFERATION. ALTHOUGH NUMEROUS BIOCHEMICAL MARKERS CAN IDENTIFY PUTATIVE PRENEOPLASTIC ALTERED HEPATIC FOCI (AHF) IN RAT LIVER, NO CONSISTENT PATTERN OF EXPRESSION DURING HEPATOCARCINOGENESIS HAS EMERGED. USING QUANTITATIVE STEREOLOGIC ANALYSES WE DEMONSTRATED THAT DECREASED EXPRESSION OF THE MAJOR HEPATOCYTE GAP JUNCTION PROTEIN, CONNEXIN 32 (CX32), IN RAT AHF IS A CONSISTENT OBSERVATION IN SEVERAL PROTOCOLS OF MULTISTAGE HEPATOCARCINOGENESIS. THIS CHANGE WAS OBSERVED AFTER INITIATION BY EITHER ETHYLNITROSOUREA (ENU) OR DIETHYLNITROSAMINE (DEN), FOLLOWED BY PROMOTION WITH PHENOBARBITAL (PB), DIOXIN, CHLORENDIC ACID, C.I. SOLVENT YELLOW, OR TAMOXIFEN. AHF GENERATED BY WY-14,643, CIPROFIBRATE, AND A CHOLINE/METHIONINE-DEFICIENT DIETARY REGIMEN ALSO SHOWED DECREASED CX32 EXPRESSION. THE DECREASE OF CX32 IN AHF WAS RAPIDLY REVERSIBLE AFTER WITHDRAWAL OF PB, AND THIS CHANGE PRECEDED A REDUCTION IN PLACENTAL ISOZYME OF GLUTATHIONE-S-TRANSFERASE (GST) EXPRESSION IN THE SAME AHF. WITHIN 20 DAYS OF WITHDRAWAL, FEWER THAN 4% OF GST-POSITIVE AHF WERE CX32 DEFICIENT, WHILE THE VOLUME OF TOTAL AHF DECREASED 30%. CHRONIC PB TREATMENT ALSO RESULTED IN A REVERSIBLE DECREASE IN CX32 SPECIFICALLY IN MID- AND CENTRO-LOBULAR HEPATOCYTES. CONTINUOUS THYMIDINE LABELING DEMONSTRATED THAT CX32 COULD BE UNCOUPLED FROM THE CELL CYCLE, SUGGESTING THAT SOME LIVER PROMOTERS MAY ACT DIRECTLY TO ALTER THE EXPRESSION OF CX32. THESE OBSERVATIONS SUGGEST THAT A DECREASE IN CX32 CONTENT WAS A RELATIVELY COMMON EPIGENETIC CHANGE IN AHF INDUCED DURING HEPATOCARCINOGENESIS BY A NUMBER OF INITIATING AND PROMOTING AGENTS BUT THAT THIS CHANGE WAS NOT SUFFICIENT FOR CARCINOGENESIS. THIS CHANGE, HOWEVER, MAY BE NECESSARY FOR THE MECHANISM(S) OF TUMOR PROMOTION, SINCE CX32-POSITIVE AHF DID NOT PROLIFERATE AS READILY AS CX32-DEFICIENT AHF.	1990	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
4 1016  27 CIITA EXPRESSION IS REGULATED BY HISTONE DEACETYLASE ENZYMES AND HAS A ROLE IN ALPHA-SYNUCLEIN PRE-FORMED FIBRIL-INDUCED ANTIGEN PRESENTATION IN MURINE MICROGLIAL CELL LINE. AIM: PARKINSON'S DISEASE (PD) IS A CHRONIC NEURODEGENERATIVE DISORDER RELATED WITH SEVERAL GENETIC AND EPIGENETIC FACTORS. IN THE CONTEXT OF EPIGENETIC FACTORS, HISTONE ACETYLATION IS ONE OF THE MOST ASSOCIATED MECHANISMS WITH PARKINSON'S DISEASE PROGRESSION. THIS STUDY INVESTIGATES THE EFFECTS OF THE INCREASED HISTONE ACETYLATION ON ANTIGEN PRESENTATION IN MICROGLIAL CELLS WHICH WERE INDUCED BY PRE-FORMED FIBRILS OF ALPHA-SYNUCLEIN (PFF ALPHA-SYNUCLEIN). METHODS: PARKINSON'S DISEASE MODEL WAS CREATED WITH PFF ALPHA-SYNUCLEIN ADMINISTRATION TO THE BV-2 MICROGLIAL CELLS. BV-2 CELLS WERE CO-TREATED WITH CUDC-907 AND TMP-195 TO INCREASE HISTONE ACETYLATION IN THE PRESENCE OF ALPHA-SYNUCLEIN. ANTIGEN REPRESENTATION WAS EVALUATED BY DETERMINING EXPRESSION LEVELS OF MAJOR HISTOCOMPATIBILITY COMPLEX-II (MHC-II) AND CLASS-II MAJOR HISTOCOMPATIBILITY COMPLEX (CIITA). RESULTS: OUR RESULTS SHOWED THAT PFF ALPHA-SYNUCLEIN SIGNIFICANTLY INCREASED MHC-II EXPRESSION, AND THAT EFFECT WAS MOST SEVERE AT 6 H OF ADMINISTRATION OF ALPHA-SYNUCLEIN. INCREASING HISTONE ACETYLATION VIA CUDC-907 AND TMP-195 ENHANCED MHC-II LEVELS EXPRESSION, WHICH WAS MORE SEVERE IN CUDC-907. ADDITIONALLY, CIITA EXPRESSION LEVELS WERE SIGNIFICANTLY INCREASED WITH PFF ALPHA-SYNUCLEIN ADMINISTRATION AND INTENSIFIED WITH THE CO-TREATMENT OF CUDC-907 AND TMP-195. FURTHERMORE, PFF ALPHA-SYNUCLEIN CAUSED A TIME-DEPENDENT INCREASE IN THE IFN-GAMMA (IFN-?) AND INTERLEUKIN-16(IL-16) LEVELS, AND THAT INCREASE WAS POTENTIATED WITH CUDC-907 AND TMP-195. CONCLUSION: CHANGES IN MHC-II AND CIITA EXPRESSION INDICATE THAT HISTONE ACETYLATION INCREASES THE ANTIGEN PRESENTATION PROPERTIES OF MICROGLIAL CELLS AFTER PFF ALPHA-SYNUCLEIN OR HISTONE DEACETYLASE INHIBITOR (HDACI) ADMINISTRATION. OUR RESULTS SHOW THAT MICROGLIAL ANTIGEN PRESENTATION MIGHT HAVE AN ESSENTIAL ROLE IN THE PATHOLOGY OF PARKINSON'S DISEASE, AND ALPHA-SYNUCLEIN LIKELY TO PLAY A PRIMARY ROLE IN THIS MECHANISM.	2022	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
5 1217  32 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
6 5017  29 PERSISTENT INFECTION OF CULTURED CELLS WITH MOUSE HEPATITIS VIRUS (MHV) RESULTS FROM THE EPIGENETIC EXPRESSION OF THE MHV RECEPTOR. THE A59 STRAIN OF MURINE CORONAVIRUS MOUSE HEPATITIS VIRUS (MHV) CAN CAUSE PERSISTENT INFECTION OF 17C1-1 CELLS AND OTHER MURINE CELL LINES. PERSISTENTLY INFECTED CULTURES RELEASED LARGE AMOUNTS OF VIRUS (10(7) TO 10(8) PFU/ML) AND WERE RESISTANT TO SUPERINFECTION WITH MHV BUT NOT TO INFECTION WITH UNRELATED SEMLIKI FOREST AND VESICULAR STOMATITIS VIRUSES. THE CULTURE MEDIUM FROM PERSISTENTLY INFECTED CULTURES DID NOT CONTAIN A SOLUBLE INHIBITOR SUCH AS INTERFERON THAT PROTECTED UNINFECTED CELLS FROM INFECTION BY MHV OR VESICULAR STOMATITIS VIRUS. THE PERSISTENT INFECTION WAS CURED IF FEWER THAN 100 CELLS WERE TRANSFERRED DURING SUBCULTURING, AND SUCH CURED CULTURES WERE SUSCEPTIBLE TO REINFECTION AND THE REESTABLISHMENT OF PERSISTENT INFECTION. CULTURES OF 17C1-1 CELLS THAT HAD BEEN NEWLY CLONED FROM SINGLE CELLS CONSISTED OF A MIXTURE OF MHV-RESISTANT AND -SUSCEPTIBLE CELLS. 17C1-1/#97 CELLS, WHICH WERE CURED BY SUBCLONING AFTER 97 PASSAGES OF A PERSISTENTLY INFECTED CULTURE OVER A 1-YEAR PERIOD, CONTAINED 5 TO 10% OF THEIR POPULATION AS SUSCEPTIBLE CELLS, WHILE 17C1-1/#402 CELLS, WHICH WERE CURED BY SUBCLONING AFTER 402 PASSAGES OVER A 3-YEAR PERIOD, HAD LESS THAN 1% SUSCEPTIBLE CELLS. SUSCEPTIBILITY TO INFECTION CORRELATED WITH THE EXPRESSION OF MHV RECEPTOR GLYCOPROTEIN (MHVR [BGP1A]). FLUORESCENCE-ACTIVATED CELL SORTER ANALYSIS WITH ANTIBODY TO MHVR SHOWED THAT 17C1-1/#97 CELLS CONTAINED A SMALL FRACTION OF MHVR-EXPRESSING CELLS. THESE MHVR-EXPRESSING CELLS WERE SELECTIVELY ELIMINATED WITHIN 24 H AFTER CHALLENGE WITH MHV-A59, AND PRETREATMENT OF 17C1-1/#97 CELLS WITH MONOCLONAL ANTIBODY CC1, WHICH BINDS TO THE N-TERMINAL DOMAIN OF MHVR, BLOCKED INFECTION. WE CONCLUDE THAT THE SUBPOPULATION OF MHVR-EXPRESSING CELLS WERE INFECTED AND KILLED IN ACUTELY OR PERSISTENTLY INFECTED CULTURES, WHILE THE SUBPOPULATION OF MHVR-NONEXPRESSING CELLS SURVIVED AND PROLIFERATED. THE SUBPOPULATION OF MHVR-NEGATIVE CELLS PRODUCED A SMALL PROPORTION OF PROGENY CELLS THAT EXPRESSED MHVR AND BECAME INFECTED, THEREBY MAINTAINING THE PERSISTENT INFECTION AS A STEADY-STATE CARRIER CULTURE. THUS, IN 17C1-1 CELL CULTURES, THE UNSTABLE OR EPIGENETIC EXPRESSION OF MHVR PERMITTED THE ESTABLISHMENT OF A PERSISTENT, CHRONIC INFECTION.	1995	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
7 1421  23 DIFFERENTIAL BRAIN ADRA2A AND ADRA2C GENE EXPRESSION AND EPIGENETIC REGULATION IN SCHIZOPHRENIA. EFFECT OF ANTIPSYCHOTIC DRUG TREATMENT. POSTSYNAPTIC ALPHA(2A)-ADRENOCEPTOR DENSITY IS ENHANCED IN THE DORSOLATERAL PREFRONTAL CORTEX (DLPFC) OF ANTIPSYCHOTIC-TREATED SCHIZOPHRENIA SUBJECTS. THIS ALTERATION MIGHT BE DUE TO TRANSCRIPTIONAL ACTIVATION, AND COULD BE REGULATED BY EPIGENETIC MECHANISMS SUCH AS HISTONE POSTTRANSLATIONAL MODIFICATIONS (PTMS). THE AIM OF THIS STUDY WAS TO EVALUATE ADRA2A AND ADRA2C GENE EXPRESSION (CODIFYING FOR ALPHA(2)-ADRENOCEPTOR SUBTYPES), AND PERMISSIVE AND REPRESSIVE HISTONE PTMS AT GENE PROMOTER REGIONS IN THE DLPFC OF SUBJECTS WITH SCHIZOPHRENIA AND MATCHED CONTROLS (N = 24 PAIRS). WE STUDIED THE EFFECT OF ANTIPSYCHOTIC (AP) TREATMENT IN AP-FREE (N = 12) AND AP-TREATED (N = 12) SUBGROUPS OF SCHIZOPHRENIA SUBJECTS AND IN RATS ACUTELY AND CHRONICALLY TREATED WITH TYPICAL AND ATYPICAL ANTIPSYCHOTICS. ADRA2A MRNA EXPRESSION WAS SELECTIVELY UPREGULATED IN AP-TREATED SCHIZOPHRENIA SUBJECTS (+93%) WHEREAS ADRA2C MRNA EXPRESSION WAS UPREGULATED IN ALL SCHIZOPHRENIA SUBJECTS (+53%) REGARDLESS OF ANTIPSYCHOTIC TREATMENT. ACUTE AND CHRONIC CLOZAPINE TREATMENT IN RATS DID NOT ALTER BRAIN CORTEX ADRA2A MRNA EXPRESSION BUT INCREASED ADRA2C MRNA EXPRESSION. BOTH ADRA2A AND ADRA2C PROMOTER REGIONS SHOWED EPIGENETIC MODIFICATION BY HISTONE METHYLATION AND ACETYLATION IN HUMAN DLPFC. THE UPREGULATION OF ADRA2A EXPRESSION IN AP-TREATED SCHIZOPHRENIA SUBJECTS MIGHT BE RELATED TO OBSERVED BIVALENT CHROMATIN AT ADRA2A PROMOTER REGION IN SCHIZOPHRENIA (DEPICTED BY INCREASED PERMISSIVE H3K4ME3 AND REPRESSIVE H3K27ME3) AND COULD BE TRIGGERED BY THE ENHANCED H4K16AC AT ADRA2A PROMOTER. IN CONCLUSION, EPIGENETIC PREDISPOSITION DIFFERENTIALLY MODULATED ADRA2A AND ADRA2C MRNA EXPRESSION IN DLPFC OF SCHIZOPHRENIA SUBJECTS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
8 2080  24 EPIGENETIC DNA METHYLATION OF EBI3 MODULATES HUMAN INTERLEUKIN-35 FORMATION VIA NFKB SIGNALING: A PROMISING THERAPEUTIC OPTION IN ULCERATIVE COLITIS. ULCERATIVE COLITIS (UC), A SEVERE CHRONIC DISEASE WITH UNCLEAR ETIOLOGY THAT IS ASSOCIATED WITH INCREASED RISK FOR COLORECTAL CANCER, IS ACCOMPANIED BY DYSREGULATION OF CYTOKINES. EPSTEIN-BARR VIRUS-INDUCED GENE 3 (EBI3) ENCODES A SUBUNIT IN THE UNIQUE HETERODIMERIC IL-12 CYTOKINE FAMILY OF EITHER PRO- OR ANTI-INFLAMMATORY FUNCTION. AFTER HAVING RECENTLY DEMONSTRATED THAT UPREGULATION OF EBI3 BY HISTONE ACETYLATION ALLEVIATES DISEASE SYMPTOMS IN A DEXTRAN SULFATE SODIUM (DSS)-TREATED MOUSE MODEL OF CHRONIC COLITIS, WE NOW AIMED TO EXAMINE A POSSIBLE FURTHER EPIGENETIC REGULATION OF EBI3 BY DNA METHYLATION UNDER INFLAMMATORY CONDITIONS. TREATMENT WITH THE DNA METHYLTRANSFERASE INHIBITOR (DNMTI) DECITABINE (DAC) AND TNFALPHA LED TO SYNERGISTIC UPREGULATION OF EBI3 IN HUMAN COLON EPITHELIAL CELLS (HCEC). USE OF DIFFERENT SIGNALING PATHWAY INHIBITORS INDICATED NFKAPPAB SIGNALING WAS NECESSARY AND PROPORTIONAL TO THE SYNERGISTIC EBI3 INDUCTION. MALDI-TOF/MS AND HPLC-ESI-MS/MS ANALYSIS OF DAC/TNFALPHA-TREATED HCEC IDENTIFIED IL-12P35 AS THE MOST PROBABLE BINDING PARTNER TO FORM A FUNCTIONAL PROTEIN. EBI3/IL-12P35 HETERODIMERS (IL-35) INDUCE THEIR OWN GENE UPREGULATION, SOMETHING THAT WAS INDEED OBSERVED IN HCEC CULTURED WITH MEDIA FROM PREVIOUSLY DAC/TNFALPHA-TREATED HCEC. THESE RESULTS SUGGEST THAT UNDER INFLAMMATORY AND DEMETHYLATING CONDITIONS THE UPREGULATION OF EBI3 RESULTS IN THE FORMATION OF ANTI-INFLAMMATORY IL-35, WHICH MIGHT BE CONSIDERED AS A THERAPEUTIC TARGET IN COLITIS.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
9 1951  31 EPIGENETIC ACTIVATION OF THE TUSC3 GENE AS A POTENTIAL THERAPY FOR XMEN DISEASE. BACKGROUND: X-LINKED MAGT1 DEFICIENCY WITH INCREASED SUSCEPTIBILITY TO EPSTEIN-BARR VIRUS INFECTION AND N-LINKED GLYCOSYLATION DEFECT (XMEN) DISEASE IS A RARE COMBINED IMMUNODEFICIENCY CAUSED BY LOSS-OF-FUNCTION MUTATIONS IN THE MAGNESIUM TRANSPORTER 1 (MAGT1) GENE. MAGT1 DEFICIENCY IMPAIRS MAGNESIUM TRANSPORT AND THE N-LINKED GLYCOSYLATION OF A PANEL OF PROTEINS, WHICH SUBSEQUENTLY ABOLISHES THE EXPRESSION OF KEY IMMUNE RECEPTORS SUCH AS NATURAL KILLER GROUP 2, MEMBER D (AKA NKG2D). THESE EFFECTS INDUCE IMMUNE SYSTEM ABNORMALITIES, CHRONIC EPSTEIN-BARR VIRUS INFECTION, AND NEOPLASIA. RECENT RESEARCH SHOWS THAT MAGT1 AND TUMOR CANDIDATE SUPPRESSOR 3 (TUSC3) SHARE HIGH SEQUENCE AND FUNCTIONAL SIMILARITY. OBJECTIVE: WE SOUGHT TO INVESTIGATE THE FEASIBILITY OF ACTIVATING TUSC3 EXPRESSION TO PROVIDE A POTENTIAL THERAPEUTIC STRATEGY FOR XMEN DISEASE. METHODS: THE EXPRESSION PROFILES OF MAGT1 AND TUSC3 WERE ANALYZED USING MULTIPLE DATABASES, REAL-TIME QUANTITATIVE PCR, AND WESTERN BLOT. THE EFFECTS OF DECITABINE AND PANOBINOSTAT ON THE REGULATION OF TUSC3 EXPRESSION WERE EXPLORED IN BOTH MAGT1 KNOCKOUT (KO)/PATIENT-DERIVED LYMPHOCYTES AND MAGT1 KO HEPATOCYTES. RESULTS: ALTHOUGH TUSC3 IS WIDELY EXPRESSED, IT IS UNDETECTABLE SPECIFICALLY IN THE IMMUNE SYSTEM AND LIVER, CONSISTENT WITH THE MAIN DISEASED TISSUES IN PATIENTS WITH XMEN DISEASE. CRISPR/CAS9-MEDIATED KO OF MAGT1 IN THE NKL CELL LINE SUCCESSFULLY MIMICKED THE PHENOTYPES OF XMEN PATIENT-DERIVED LYMPHOCYTES, AND EXOGENOUS EXPRESSION OF TUSC3 RESCUED THE DEFICIENCIES IN KO NKL CELLS. USING THIS IN VITRO MODEL, WE IDENTIFIED 2 EPIGENETIC DRUGS, DECITABINE AND PANOBINOSTAT, BY SCREENING. COMBINATION TREATMENT USING THESE 2 DRUGS SIGNIFICANTLY UPREGULATED TUSC3 EXPRESSION AND RESCUED THE IMMUNE AND LIVER ABNORMALITIES. CONCLUSIONS: EPIGENETIC ACTIVATION OF TUSC3 EXPRESSION CONSTITUTES AN EFFECTIVE THERAPEUTIC STRATEGY FOR XMEN DISEASE.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
10 1843  27 EFFECTS OF TELOMERASE INHIBITOR ON EPIGENETIC CHROMATIN MODIFICATION ENZYMES IN MALIGNANCIES. TELOMERASE HAS A CRITICAL ROLE IN CELL PROLIFERATION, TUMOR MAINTAINING, AND THERAPY RESISTANCE, WHICH ACT BY MODIFYING MANY SIGNALING PATHWAYS. 2-[(E)-3-NAPHTALEN-2-YL-BUT-2-ENOYLAMINO]-BENZOIC ACID (BIBR1532) IS ONE OF THE MOST STUDIED TELOMERASE INHIBITORS, AND IT TARGETS TELOMERASE COMPONENTS TERC AND TERT. IN THIS NOVEL STUDY, WE AIMED TO INVESTIGATE THE EPIGENETIC EFFECTS OF BIBR1532 ON BOTH HEMATOLOGIC MALIGNANCIES AND SOLID TUMORS. K-562 HUMAN CHRONIC MYELOID LEUKEMIA CELL LINE AND U87MG GLIOBLASTOMA CELL LINE WERE COMPARED WITH CONTROL GROUPS WITHOUT BIBR1532 TREATMENT. CYTOTOXIC EFFECTS OF BIBR1532 WERE DETERMINED BY USING WST-1 ASSAY. APOPTOTIC EFFECTS OF BIBR1532 WERE DETECTED BY USING ANNEXIN V METHOD. TO ASSESS EXPRESSION CHANGES IN THE HUMAN EPIGENETIC CHROMATIN MODIFICATION ENZYME GENES, TOTAL RNA WAS ISOLATED FROM K-562 AND U87MG CELLS TREATED WITH BIBR1532 AND UNTREATED CONTROL CELLS. BIBR1532 INDUCED 2.41-FOLD APOPTOTIC CELL DEATH IN U87MG CELL LINES COMPARED WITH CONTROL GROUPS. APOPTOSIS WAS SLIGHTLY INDUCED IN K-562 CELLS WITH BIBR1532 TREATMENT COMPARED WITH CONTROL CELLS. WE OBSERVED THAT BIBR1532 ALSO REGULATES SIMILAR GENES IN BOTH CELL LINES, AND IT IS USEFUL ON EPIGENETIC MECHANISMS. AS A RESULT, TELOMERASE INHIBITOR BIBR1532 HAS A SIGNIFICANT EFFECT ON BOTH HEMATOLOGICAL MALIGNANCIES AND SOLID TUMORS.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
11 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	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
12 1668  35 DOWNREGULATION OF SOCS1 INCREASES INTERFERON-INDUCED ISGYLATION DURING DIFFERENTIATION OF INDUCED-PLURIPOTENT STEM CELLS TO HEPATOCYTES. BACKGROUND & AIMS: INCREASED EXPRESSION OF IFN-STIMULATED GENE 15 (ISG15) AND SUBSEQUENTLY INCREASED ISGYLATION ARE KEY FACTORS IN THE HOST RESPONSE TO VIRAL INFECTION. IN THIS STUDY, WE SOUGHT TO CHARACTERIZE THE EXPRESSION OF ISG15, ISGYLATION, AND ASSOCIATED ENZYMES AT EACH STAGE OF DIFFERENTIATION FROM INDUCED PLURIPOTENT STEM CELLS (IPSCS) TO HEPATOCYTES. METHODS: TO STUDY THE REGULATION OF ISGYLATION, WE UTILIZED PATIENT SAMPLES AND IN VITRO CELL CULTURE MODELS INCLUDING IPSCS, HEPATOCYTES-LIKE CELLS, IMMORTALIZED CELL LINES, AND PRIMARY HUMAN HEPATOCYTES. PROTEIN/MRNA EXPRESSION WERE MEASURED FOLLOWING TREATMENT WITH POLY(I:C), IFNALPHA AND HCV INFECTION. RESULTS: WHEN COMPARED TO HLCS, WE OBSERVED SEVERAL NOVEL ASPECTS OF THE ISGYLATION PATHWAY IN IPSCS. THESE INCLUDE A LOWER BASELINE EXPRESSION OF THE ISGYLATION-ACTIVATING ENZYME, UBE1L, A LACK OF IFN-INDUCED EXPRESSION OF THE ISGYLATION-CONJUGATION ENZYME UBE2L6, AN ATTENUATED ACTIVATION OF THE TRANSCRIPTION FACTOR STAT1 AND CONSTITUTIVE EXPRESSION OF SOCS1. ISGYLATION WAS OBSERVED IN IPSCS FOLLOWING DOWNREGULATION OF SOCS1, WHICH FACILITATED STAT1 ACTIVATION AND SUBSEQUENTLY INCREASED EXPRESSION OF UBE2L6. INTRIGUINGLY, HCV PERMISSIVE TRANSFORMED HEPATOMA CELL LINES DEMONSTRATED HIGHER INTRINSIC EXPRESSION OF SOCS1 AND WEAKER ISGYLATION FOLLOWING IFN TREATMENT. SOCS1 DOWNREGULATION IN HCV-INFECTED HUH 7.5.1 CELLS LED TO INCREASED ISGYLATION. CONCLUSIONS: HEREIN, WE SHOW THAT HIGH BASAL LEVELS OF SOCS1 INHIBIT STAT1 ACTIVATION AND SUBSEQUENTLY IFN-INDUCED UBE2L6 AND ISGYLATION IN IPSCS. FURTHERMORE, AS IPSCS DIFFERENTIATE INTO HEPATOCYTES, EPIGENETIC MECHANISMS REGULATE ISGYLATION BY MODIFYING UBE1L AND SOCS1 EXPRESSION LEVELS. OVERALL, THIS STUDY DEMONSTRATES THAT THE DEVELOPMENT OF CELL-INTRINSIC INNATE IMMUNITY DURING THE DIFFERENTIATION OF IPSCS TO HEPATOCYTES PROVIDES INSIGHT INTO CELL TYPE-SPECIFIC REGULATION OF HOST DEFENSE RESPONSES AND RELATED ONCOGENIC PROCESSES. IMPACT AND IMPLICATIONS: TO ELUCIDATE THE MECHANISM UNDERLYING REGULATION OF ISGYLATION, A KEY PROCESS IN THE INNATE IMMUNE RESPONSE, WE STUDIED CHANGES IN ISGYLATION-ASSOCIATED GENES AT THE DIFFERENT STAGES OF DIFFERENTIATION FROM IPSCS TO HEPATOCYTES. WE FOUND THAT HIGH BASAL LEVELS OF SOCS1 INHIBIT STAT1 ACTIVATION AND SUBSEQUENTLY IFN-INDUCED UBE2L6 AND ISGYLATION IN IPSCS. IMPORTANTLY, EPIGENETIC REGULATION OF SOCS1 AND SUBSEQUENTLY ISGYLATION MAY BE IMPORTANT FACTORS IN THE DEVELOPMENT OF CELL TYPE-SPECIFIC HOST DEFENSE RESPONSES IN HEPATOCYTES THAT SHOULD BE CONSIDERED WHEN STUDYING CHRONIC INFECTIONS AND ONCOGENIC PROCESSES IN THE LIVER.	2022	
                                                                                                                                                                                                                                             
13 6636  38 UNRAVELING A NEW PLAYER IN MULTIPLE SCLEROSIS PATHOGENESIS: THE RNA-BINDING PROTEIN HUR. BACKGROUND: ELAV-LIKE PROTEINS ARE A SMALL FAMILY OF RNA-BINDING PROTEINS THAT ARE FUNDAMENTAL PLAYERS IN POST-TRANSCRIPTIONAL MECHANISMS AND ARE INVOLVED IN THE PATHOGENESIS OF NEUROLOGIC AND PSYCHIATRIC DISORDERS. HUR, THE UBIQUITOUSLY EXPRESSED MEMBER OF THE FAMILY, IS ALSO IMPLICATED IN SUSTAINING INFLAMMATION AND INFLAMMATORY DISEASES, SUPPORTING THE PRODUCTION OF PRO-INFLAMMATORY CYTOKINES. INFLAMMATION PLAYS A CENTRAL ROLE IN MULTIPLE SCLEROSIS (MS), WHICH REPRESENTS THE MOST COMMON CAUSE OF PERMANENT PHYSICAL DISABILITY IN YOUNG ADULTS. MS IS A CHRONIC AUTOIMMUNE DISEASE AFFECTING THE CENTRAL NERVOUS SYSTEM, WITH A COMPLEX AETIOLOGY INVOLVING GENETIC, ENVIRONMENTAL AND EPIGENETIC FACTORS. NO DATA ARE AVAILABLE ON THE POTENTIAL ENTANGLEMENT OF HUR IN MS PATHOGENESIS IN PATIENTS. IN THE PRESENT WORK, WE AIMED AT EXPLORING HUR PROTEIN LEVELS IN PERIPHERAL BLOOD MONONUCLEAR CELLS (PBMCS) FROM MS PATIENTS, COMPARED TO HEALTHY CONTROLS. TO FURTHER ELUCIDATE THE POSSIBLE INVOLVEMENT OF HUR IN MS, WE ALSO INVESTIGATED THE RELATIONSHIP BETWEEN THIS SPECIFIC RNA-BINDING PROTEIN AND HSP70-2 PROTEIN, ALSO CONSIDERING THE HSP70-2 RS1061581 POLYMORPHISM, GIVEN THAT HSP70-2 MRNA HAS BEEN REPORTED AS A HUR TARGET AND THIS SPECIFIC POLYMORPHISM TO BE ASSOCIATED WITH MS RISK. METHODS: ALLELES AND GENOTYPES FOR HSP70-2 RS1061581 POLYMORPHISM WERE ASSESSED, BY USING A POLYMERASE CHAIN REACTION-RESTRICTION FRAGMENT LENGTH POLYMORPHISM, FOLLOWED BY DIGESTION WITH RESTRICTION ENZYME, IN MS PATIENTS AND HEALTHY CONTROLS. PBMCS FROM A SUBGROUP OF PATIENTS AND CONTROLS WERE USED TO EVALUATE HUR AND HSP70-2 PROTEIN CONTENT BY WESTERN BLOT. RESULTS: PBMCS FROM 52 MS PATIENTS HAD A LOWER HUR AND HIGHER HSP70-2 PROTEIN CONTENT COMPARED TO 43 HEALTHY CONTROLS. AN INCREASE OF 100 UNITS OF HUR SIGNIFICANTLY DECREASED THE RISK OF DEVELOPING MS BY 9.8% (OR: 0.902, 95% CI: 0.83-0.98), CONTROLLING FOR HSP70-2 PROTEIN EXPRESSION, HSP70-2 RS1061581 GENOTYPE, AGE AND SEX. MOREOVER, HOLDING HUR LEVELS, AN INCREASE OF 100 UNITS OF HSP70-2 PROTEIN SIGNIFICANTLY INCREASED THE MS RISK BY 18.1% (OR: 1.181, 95% CI: 1.03-1.36) AND THE GENETIC SUSCEPTIBILITY OF DEVELOPING MS FOR HSP70-2 RS1061581 GG CARRIERS IS CONFIRMED. OF INTEREST, MS PATIENTS WITH A MODERATE TO SEVERE FORM OF MS (MSSS >/= 3) SHOWED A TREND TOWARDS A REDUCTION OF HUR PROTEIN LEVELS COMPARED TO PATIENTS WITH MILD DISEASE SEVERITY (MSSS < 3). CONCLUSIONS: HUR PROTEIN LEVELS ARE REDUCED IN MS PATIENTS COMPARED TO HEALTHY SUBJECTS, AND THE PROTEIN AMOUNT MAY CONTINUE TO DECLINE WITH DISEASE PROGRESSION, SUGGESTING A PUTATIVE ROLE OF THIS RNA-BINDING PROTEIN. MOREOVER, OUR RESULTS SUGGEST THAT MS PATHOLOGY MAY HAVE DISRUPTED THE LINK BETWEEN HUR AND ITS TARGET TRANSCRIPT HSP70-2. IT WILL BE IMPORTANT TO FURTHER EXPLORE THE EXACT ROLE OF HUR IN MS, CONSIDERING THE COMPLEX INTERPLAY WITH OTHER RNA-BINDING FACTORS AND TARGET MRNAS.	2020	

14 1067  29 CLINICAL UTILITY OF PDSS2 EXPRESSION TO STRATIFY PATIENTS AT RISK FOR RECURRENCE OF HEPATOCELLULAR CARCINOMA. IDENTIFICATION OF NOVEL GENETIC AND EPIGENETIC ALTERATIONS IS REQUIRED FOR OPTIMAL STRATIFICATION OF PATIENTS WITH HEPATOCELLULAR CARCINOMA (HCC) AT RISK FOR RECURRENCE AND ADVERSE PROGNOSIS. COENZYME Q10 (COQ10), WHICH MEDIATES APOPTOSIS, IS SYNTHESIZED BY PRENYL DIPHOSPHATE SYNTHASE SUBUNIT 2 (PDSS2). IN THE PRESENT STUDY WE EVALUATED THE CLINICAL SIGNIFICANCE AND REGULATORY MECHANISMS OF PDSS2 EXPRESSION IN HCC. PDSS2 EXPRESSION LEVELS AND THOSE OF GENES ENCODING POTENTIALLY INTERACTING PROTEINS AS WELL AS THE METHYLATION STATUS OF THE PDSS2 PROMOTER REGION WERE ANALYZED IN HCC CELL LINES. PDSS2 MRNA LEVELS IN 151 PAIRS OF RESECTED SPECIMENS WERE DETERMINED TO EVALUATE THE ASSOCIATION OF PDSS2 EXPRESSION AND CLINICOPATHOLOGICAL FACTORS. THE EXPRESSION AND DISTRIBUTION OF PDSS2 WERE DETERMINED USING IMMUNOHISTOCHEMISTRY. PDSS2 MRNA EXPRESSION WAS DECREASED IN SIX OF NINE HCC CELL LINES AND SIGNIFICANTLY CORRELATED WITH THOSE OF HEPATOCYTE NUCLEAR FACTOR 4ALPHA. PDSS2 TRANSCRIPTION IN HCC CELLS WITH DECREASED PDSS2 EXPRESSION ACCOMPANYING HYPERMETHYLATION WAS REACTIVATED AFTER TREATING THESE CELLS WITH A METHYLATION INHIBITOR. MEAN EXPRESSION LEVELS OF PDSS2 MRNA RELATIVE TO THAT OF UNINVOLVED LIVER DIMINISHED GRADUALLY IN THE ORDER OF CHRONIC HEPATITIS TO CIRRHOSIS, AND EACH WAS SIGNIFICANTLY HIGHER THAN THOSE OF HCCS. PDSS2 AND PDSS2 MRNA LEVELS WERE CONSISTENT. DECREASED PDSS2 MRNA LEVELS WERE DETECTED IN HCC TISSUES OF 56 PATIENTS, CORRELATED WITH SHORTER DISEASE-SPECIFIC SURVIVAL, AND WAS IDENTIFIED AS AN INDEPENDENT PROGNOSTIC FACTOR. PDSS2 IS A PUTATIVE TUMOR SUPPRESSOR, AND PROMOTER HYPERMETHYLATION IS A KEY REGULATORY MECHANISM IN HCC. DECREASED LEVELS OF PDSS2 MRNA EXPRESSION MAY REPRESENT A NOVEL BIOMARKER OF HCC.	2014	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
15  216  26 ACUTE BETA-ADRENERGIC ACTIVATION TRIGGERS NUCLEAR IMPORT OF HISTONE DEACETYLASE 5 AND DELAYS G(Q)-INDUCED TRANSCRIPTIONAL ACTIVATION. DURING HEMODYNAMIC STRESS, CATECHOLAMINES AND NEUROHUMORAL STIMULI MAY INDUCE CO-ACTIVATION OF G(Q)-COUPLED RECEPTORS AND BETA-ADRENERGIC RECEPTORS (BETA-AR), LEADING TO CARDIAC REMODELING. DYNAMIC REGULATION OF HISTONE DEACETYLASE 5 (HDAC5), A TRANSCRIPTIONAL REPRESSOR, IS CRUCIAL DURING STRESS SIGNALING DUE TO ITS ROLE IN EPIGENETIC CONTROL OF FETAL GENE MARKERS. LITTLE IS KNOWN ABOUT ITS REGULATION DURING ACUTE AND CHRONIC BETA-AR STIMULATION AND ITS CROSS-INTERACTION WITH G(Q) SIGNALING IN ADULT CARDIAC MYOCYTES. HERE, WE EVALUATE THE POTENTIAL CROSS-TALK BETWEEN G(Q)-DRIVEN AND BETA-AR MEDIATED SIGNALING AT THE LEVEL OF NUCLEOCYTOPLASMIC SHUTTLING OF HDAC5. WE SHOW THE TRANSLOCATION OF GFP-TAGGED WILD TYPE HDAC5 OR MUTANTS (S279A AND S279D) IN RESPONSE TO BETA-AR OR G(Q) AGONISTS. ISOPROTERENOL (ISO) OR PKA ACTIVATION RESULTS IN STRONG NUCLEAR ACCUMULATION OF HDAC5 IN CONTRAST TO NUCLEAR EXPORT DRIVEN BY CA(2+)-CALMODULIN PROTEIN KINASE II AND PROTEIN KINASE D. MOREOVER, NUCLEAR ACCUMULATION OF HDAC5 UNDER ACUTE ISO/PKA SIGNALING IS DEPENDENT ON PHOSPHORYLATION OF SER-279 AND CAN BLOCK SUBSEQUENT G(Q)-MEDIATED NUCLEAR HDAC5 EXPORT. INTRIGUINGLY, THE ATTENUATION OF G(Q)-INDUCED EXPORT IS ABOLISHED AFTER CHRONIC PKA ACTIVATION, YET NUCLEAR HDAC5 REMAINS ELEVATED. LAST, THE EFFECT OF CHRONIC BETA-AR SIGNALING ON HDAC5 TRANSLOCATION WAS EXAMINED IN ADULT MYOCYTES FROM A RABBIT MODEL OF HEART FAILURE, WHERE ISO-INDUCED NUCLEAR IMPORT IS ABLATED, BUT G(Q)-AGONIST MEDIATED EXPORT IS PRESERVED. ACUTE BETA-AR/PKA ACTIVATION PROTECTS AGAINST HYPERTROPHIC SIGNALING BY DELAYING G(Q)-MEDIATED TRANSCRIPTIONAL ACTIVATION. THIS SERVES AS A KEY PHYSIOLOGICAL CONTROL SWITCH BEFORE ALLOWING GENETIC REPROGRAMMING VIA HDAC5 NUCLEAR EXPORT DURING MORE SEVERE STRESS, SUCH AS HEART FAILURE.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
16  768  24 CD47 (CLUSTER OF DIFFERENTIATION 47). CD47, ALSO KNOWN AS INTEGRIN-ASSOCIATED PROTEIN, IS A CONSTITUTIVELY AND UBIQUITOUSLY EXPRESSED TRANSMEMBRANE RECEPTOR. CD47 IS CONSERVED ACROSS AMNIOTES INCLUDING MAMMALS, REPTILES, AND BIRDS. EXPRESSION IS INCREASED IN MANY CANCERS AND, IN NON-MALIGNANT CELLS, BY STRESS AND WITH AGING. THE UP-REGULATION OF CD47 EXPRESSION IS GENERALLY EPIGENETIC, WHEREAS GENE AMPLIFICATION OCCURS WITH LOW FREQUENCY IN SOME CANCERS. CD47 IS A HIGH AFFINITY SIGNALING RECEPTOR FOR THE SECRETED PROTEIN THROMBOSPONDIN-1 (THBS1) AND THE COUNTER-RECEPTOR FOR SIGNAL REGULATORY PROTEIN-ALPHA (SIRPA, SIRPALPHA) AND SIRPGAMMA (SIRPG). CD47 INTERACTION WITH SIRPALPHA SERVES AS A MARKER OF SELF TO INNATE IMMUNE CELLS AND THEREBY PROTECTS CANCER CELLS FROM PHAGOCYTIC CLEARANCE. CONSEQUENTLY, HIGHER CD47 CORRELATES WITH A POOR PROGNOSIS IN SOME CANCERS, AND THERAPEUTIC BLOCKADE CAN SUPPRESS TUMOR GROWTH BY ENHANCING INNATE ANTITUMOR IMMUNITY. CD47 EXPRESSED ON CYTOTOXIC T CELLS, DENDRITIC CELLS, AND NK CELLS MEDIATES INHIBITORY THBS1 SIGNALING THAT FURTHER LIMITS ANTITUMOR IMMUNITY. CD47 LATERALLY ASSOCIATES WITH SEVERAL INTEGRINS AND THEREBY REGULATES CELL ADHESION AND MIGRATION. CD47 HAS ADDITIONAL LATERAL BINDING PARTNERS IN SPECIFIC CELL TYPES, AND LIGATION OF CD47 IN SOME CASES MODULATES THEIR FUNCTION. THBS1-CD47 SIGNALING IN NON-MALIGNANT CELLS INHIBITS NITRIC OXIDE/CGMP, CALCIUM, AND VEGF SIGNALING, MITOCHONDRIAL HOMEOSTASIS, STEM CELL MAINTENANCE, PROTECTIVE AUTOPHAGY, AND DNA DAMAGE RESPONSE, AND PROMOTES NADPH OXIDASE ACTIVITY. CD47 SIGNALING IS A PHYSIOLOGICAL REGULATOR OF PLATELET ACTIVATION, ANGIOGENESIS AND BLOOD FLOW. THBS1/CD47 SIGNALING IS FREQUENTLY DYSREGULATED IN CHRONIC DISEASES.	2021	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
17 1950  25 EPIGENETIC ACTIVATION OF TENSIN 4 PROMOTES GASTRIC CANCER PROGRESSION. GASTRIC CANCER (GC) IS A COMPLEX DISEASE INFLUENCED BY MULTIPLE GENETIC AND EPIGENETIC FACTORS. CHRONIC INFLAMMATION CAUSED BY HELICOBACTER PYLORI INFECTION AND DIETARY RISK FACTORS CAN RESULT IN THE ACCUMULATION OF ABERRANT DNA METHYLATION IN GASTRIC MUCOSA, WHICH PROMOTES GC DEVELOPMENT. TENSIN 4 (TNS4), A MEMBER OF THE TENSIN FAMILY OF PROTEINS, IS LOCALIZED TO FOCAL ADHESION SITES, WHICH CONNECT THE EXTRACELLULAR MATRIX AND CYTOSKELETAL NETWORK. WE IDENTIFIED UPREGULATION OF TNS4 IN GC USING QUANTITATIVE REVERSE TRANSCRIPTION PCR WITH 174 PAIRED SAMPLES OF GC TUMORS AND ADJACENT NORMAL TISSUES. TRANSCRIPTIONAL ACTIVATION OF TNS4 OCCURRED EVEN DURING THE EARLY STAGE OF TUMOR DEVELOPMENT. TNS4 DEPLETION IN GC CELL LINES THAT EXPRESSED HIGH TO MODERATE LEVELS OF TNS4, I.E., SNU-601, KATO III, AND MKN74, REDUCED CELL PROLIFERATION AND MIGRATION, WHEREAS ECTOPIC EXPRESSION OF TNS4 IN THOSE LINES THAT EXPRESSED LOWER LEVELS OF TNS4, I.E., SNU-638, MKN1, AND MKN45 INCREASED COLONY FORMATION AND CELL MIGRATION. THE PROMOTER REGION OF TNS4 WAS HYPOMETHYLATED IN GC CELL LINES THAT SHOWED UPREGULATION OF TNS4. WE ALSO FOUND A SIGNIFICANT NEGATIVE CORRELATION BETWEEN TNS4 EXPRESSION AND CPG METHYLATION IN 250 GC TUMORS BASED ON THE CANCER GENOME ATLAS (TCGA) DATA. THIS STUDY ELUCIDATES THE EPIGENETIC MECHANISM OF TNS4 ACTIVATION AND FUNCTIONAL ROLES OF TNS4 IN GC DEVELOPMENT AND PROGRESSION AND SUGGESTS A POSSIBLE APPROACH FOR FUTURE GC TREATMENTS.	2023	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
18 2263  32 EPIGENETIC PROGRAMMING AT THE MOGAT1 LOCUS MAY LINK NEONATAL OVERNUTRITION WITH LONG-TERM HEPATIC STEATOSIS AND INSULIN RESISTANCE. POSTNATAL OVERFEEDING INCREASES THE RISK OF CHRONIC DISEASES LATER IN LIFE, INCLUDING OBESITY, INSULIN RESISTANCE, HEPATIC STEATOSIS, AND TYPE 2 DIABETES. EPIGENETIC MECHANISMS MIGHT UNDERLIE THE LONG-LASTING EFFECTS ASSOCIATED WITH EARLY NUTRITION. HERE WE AIMED TO EXPLORE THE MOLECULAR PATHWAYS INVOLVED IN EARLY DEVELOPMENT OF INSULIN RESISTANCE AND HEPATIC STEATOSIS, AND WE EXAMINED THE POTENTIAL CONTRIBUTION OF DNA METHYLATION AND HISTONE MODIFICATIONS TO LONG-TERM PROGRAMMING OF METABOLIC DISEASE. WE USED A WELL-CHARACTERIZED MOUSE MODEL OF NEONATAL OVERFEEDING AND EARLY ADIPOSITY BY LITTER SIZE REDUCTION. NEONATAL OVERFEEDING LED TO HEPATIC INSULIN RESISTANCE VERY EARLY IN LIFE THAT PERSISTED THROUGHOUT ADULTHOOD DESPITE NORMALIZING FOOD INTAKE. UP-REGULATION OF MONOACYLGLYCEROL O-ACYLTRANSFERASE ( MOGAT) 1 CONCEIVABLY MEDIATES HEPATIC STEATOSIS AND INSULIN RESISTANCE THROUGH INCREASING INTRACELLULAR DIACYLGLYCEROL CONTENT. EARLY AND SUSTAINED DEREGULATION OF MOGAT1 WAS ASSOCIATED WITH A COMBINATION OF HISTONE MODIFICATIONS THAT MIGHT FAVOR MOGAT1 EXPRESSION. IN SUM, POSTNATAL OVERFEEDING CAUSES EXTREMELY RAPID DERANGEMENTS OF HEPATIC INSULIN SENSITIVITY THAT REMAIN RELATIVELY STABLE UNTIL ADULTHOOD. EPIGENETIC MECHANISMS, PARTICULARLY HISTONE MODIFICATIONS, COULD CONTRIBUTE TO SUCH LONG-LASTING EFFECTS. OUR DATA SUGGEST THAT TARGETING HEPATIC MONOACYLGLYCEROL ACYLTRANSFERASE ACTIVITY DURING EARLY LIFE MIGHT PROVIDE A NOVEL STRATEGY TO IMPROVE HEPATIC INSULIN SENSITIVITY AND PREVENT LATE-ONSET INSULIN RESISTANCE AND FATTY LIVER DISEASE.-RAMON-KRAUEL, M., PENTINAT, T., BLOKS, V. W., CEBRIA, J., RIBO, S., PEREZ-WIENESE, R., VILA, M., PALACIOS-MARIN, I., FERNANDEZ-PEREZ, A., VALLEJO, M., TELLEZ, N., RODRIGUEZ, M. A., YANES, O., LERIN, C., DIAZ, R., PLOSCH, T., TIETGE, U. J. F., JIMENEZ-CHILLARON, J. C. EPIGENETIC PROGRAMMING AT THE MOGAT1 LOCUS MAY LINK NEONATAL OVERNUTRITION WITH LONG-TERM HEPATIC STEATOSIS AND INSULIN RESISTANCE.	2018	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
19 1777  38 EDIBLE BLUE-GREEN ALGAE REDUCE THE PRODUCTION OF PRO-INFLAMMATORY CYTOKINES BY INHIBITING NF-KAPPAB PATHWAY IN MACROPHAGES AND SPLENOCYTES. BACKGROUND: CHRONIC INFLAMMATION CONTRIBUTES TO THE DEVELOPMENT OF PATHOLOGICAL DISORDERS INCLUDING INSULIN RESISTANCE AND ATHEROSCLEROSIS. IDENTIFICATION OF ANTI-INFLAMMATORY NATURAL PRODUCTS CAN PREVENT THE INFLAMMATORY DISEASES. METHODS: ANTI-INFLAMMATORY EFFECTS OF BLUE-GREEN ALGAE (BGA), I.E., NOSTOC COMMUNE VAR. SPHAEROIDES KUTZING (NO) AND SPIRULINA PLATENSIS (SP), WERE COMPARED IN RAW 264.7 AND MOUSE BONE MARROW-DERIVED MACROPHAGES (BMM) AS WELL AS SPLENOCYTES FROM APOLIPOPROTEIN E KNOCKOUT (APOE(-/-)) MICE FED BGA. RESULTS: WHEN MACROPHAGES PRETREATED WITH 100MUG/ML NO LIPID EXTRACT (NOE) OR SP LIPID EXTRACT (SPE) WERE ACTIVATED BY LIPOPOLYSACCHARIDE (LPS), EXPRESSION AND SECRETION OF PRO-INFLAMMATORY CYTOKINES, SUCH AS TUMOR NECROSIS FACTOR ALPHA (TNFALPHA), INTERLEUKIN 1BETA (IL-1BETA), AND IL-6, WERE SIGNIFICANTLY REPRESSED. NOE AND SPE ALSO SIGNIFICANTLY REPRESSED THE EXPRESSION OF TNFALPHA AND IL-1BETA IN BMM. LPS-INDUCED SECRETION OF IL-6 WAS LOWER IN SPLENOCYTES FROM APOE(-/-) FED AN ATHEROGENIC DIET CONTAINING 5% NO OR SP FOR 12WEEKS. IN RAW 264.7 MACROPHAGES, NOE AND SPE MARKEDLY DECREASED NUCLEAR TRANSLOCATION OF NF-KAPPAB. THE DEGREE OF REPRESSION OF PRO-INFLAMMATORY GENE EXPRESSION BY ALGAL EXTRACTS WAS MUCH STRONGER THAN THAT OF SN50, AN INHIBITOR OF NF-KAPPAB NUCLEAR TRANSLOCATION. TRICHOSTATIN A, A PAN HISTONE DEACETYLASE INHIBITOR, INCREASED BASAL EXPRESSION OF IL-1BETA AND ATTENUATED THE REPRESSION OF THE GENE EXPRESSION BY SPE. SPE SIGNIFICANTLY DOWN-REGULATED MRNA ABUNDANCE OF 11 HDAC ISOFORMS, CONSEQUENTLY INCREASING ACETYLATED HISTONE 3 LEVELS. CONCLUSION: NOE AND SPE REPRESS PRO-INFLAMMATORY CYTOKINE EXPRESSION AND SECRETION IN MACROPHAGES AND SPLENOCYTES VIA INHIBITION OF NF-KAPPAB PATHWAY. HISTONE ACETYLATION STATE IS LIKELY INVOLVED IN THE INHIBITION. GENERAL SIGNIFICANCE: THIS STUDY UNDERSCORES NATURAL PRODUCTS CAN EXERT ANTI-INFLAMMATORY EFFECTS BY EPIGENETIC MODIFICATIONS SUCH AS HISTONE ACETYLATION.	2013	
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
20  681  30 BRAIN LIPOTOXICITY OF PHYTANIC ACID AND VERY LONG-CHAIN FATTY ACIDS. HARMFUL CELLULAR/MITOCHONDRIAL ACTIVITIES IN REFSUM DISEASE AND X-LINKED ADRENOLEUKODYSTROPHY. IT IS INCREASINGLY UNDERSTOOD THAT IN THE AGING BRAIN, ESPECIALLY IN THE CASE OF PATIENTS SUFFERING FROM NEURODEGENERATIVE DISEASES, SOME FATTY ACIDS AT PATHOLOGICALLY HIGH CONCENTRATIONS EXERT DETRIMENTAL ACTIVITIES. TO STUDY SUCH ACTIVITIES, WE HERE ANALYZE GENETIC DISEASES, WHICH ARE DUE TO COMPROMISED METABOLISM OF SPECIFIC FATTY ACIDS, EITHER THE BRANCHED-CHAIN PHYTANIC ACID OR VERY LONG-CHAIN FATTY ACIDS (VLCFAS). MICROMOLAR CONCENTRATIONS OF PHYTANIC ACID OR OF VLCFAS DISTURB THE INTEGRITY OF NEURAL CELLS BY IMPAIRING CA(2+) HOMEOSTASIS, ENHANCING OXIDATIVE STRESS OR DE-ENERGIZING MITOCHONDRIA. FINALLY, THESE COMBINED HARMFUL ACTIVITIES ACCELERATE CELL DEATH. MITOCHONDRIA ARE MORE SEVERELY TARGETED BY PHYTANIC ACID THAN BY VLCFAS. THE INSERTION OF VLCFAS INTO THE INNER MEMBRANE DISTORTS THE ARRANGEMENT OF MEMBRANE CONSTITUENTS AND THEIR FUNCTIONAL INTERACTIONS. PHYTANIC ACID EXERTS SPECIFIC PROTONOPHORIC ACTIVITY, INDUCES REACTIVE OXYGEN SPECIES (ROS) GENERATION, AND REDUCES ATP GENERATION. A CLEAR INHIBITION OF THE NA(+), K(+)-ATPASE ACTIVITY BY PHYTANIC ACID HAS ALSO BEEN REPORTED. IN ADDITION TO THE INSTANTANEOUS EFFECTS, A CHRONIC EXPOSURE OF BRAIN CELLS TO LOW MICROMOLAR CONCENTRATIONS OF PHYTANIC ACID MAY PRODUCE NEURONAL DAMAGE IN REFSUM DISEASE BY ALTERING EPIGENETIC TRANSCRIPTIONAL REGULATION. MYELIN-PRODUCING OLIGODENDROCYTES RESPOND WITH PARTICULAR SENSITIVITY TO VLCFAS. DELETERIOUS ACTIVITY OF VLCFAS ON ENERGY-DEPENDENT MITOCHONDRIAL FUNCTIONS DECLINES WITH INCREASING THE HYDROCARBON CHAIN LENGTH (C22:0 > C24:0 > C26:0). IN CONTRAST, THE REVERSE SEQUENCE HOLDS TRUE FOR CELL DEATH INDUCTION BY VLCFAS (C22:0 < C24:0 < C26:0). IN ADRENOLEUKODYSTROPHY, THE UPTAKE OF VLCFAS BY PEROXISOMES IS IMPAIRED BY DEFECTS OF THE ABCD1 TRANSPORTER. STUDYING MITOCHONDRIA FROM ABCD1-DEFICIENT AND WILD-TYPE MICE PROVES THAT THE ENERGY-DEPENDENT FUNCTIONS ARE NOT ALTERED IN THE DISEASE MODEL. THUS, A DEFECTIVE ABCD1 APPARENTLY EXERTS NO OBVIOUS ADAPTIVE PRESSURE ON MITOCHONDRIA. FURTHER RESEARCH HAS TO ELUCIDATE THE DETAILED MECHANISTIC BASIS FOR THE FAILURES CAUSING FATTY ACID-MEDIATED NEURODEGENERATION AND SHOULD HELP TO PROVIDE POSSIBLE THERAPEUTIC INTERVENTIONS.	2016