0000000000292906

AUTHOR

Michael Fried

showing 2 related works from this author

Hypoxia Positively Regulates the Expression of pH-Sensing G-Protein–Coupled Receptor OGR1 (GPR68)

2016

Background & Aims: A novel family of proton-sensing G-proteinâcoupled receptors, including ovarian cancer G-proteinâcoupled receptor 1 (OGR1) (GPR68) has been identified to play a role in pH homeostasis. Hypoxia is known to change tissue pH as a result of anaerobic glucose metabolism through the stabilization of hypoxia-inducible factor-1α. We investigated how hypoxia regulates the expression of OGR1 in the intestinal mucosa and associated cells. Methods: OGR1 expression in murine tumors, human colonic tissue, and myeloid cells was determined by quantitative reverse-transcription polymerase chain reaction. The influence of hypoxia on OGR1 expression was studied in monocytes/macrophages and…

WT wild type0301 basic medicineMM6 MonoMac 6HV healthy volunteerSPARC secreted protein acidic and rich in cysteineNF-κB nuclear factor-κBInflammationBiologyIEC intestinal epithelial cell03 medical and health sciencesIntestinal mucosaTDAG8Ovarian Cancer G-Protein–Coupled ReceptormedicineOGR1 ovarian cancer G-protein–coupled receptor 1 (GPR68)IFN interferonlcsh:RC799-869ReceptorOriginal ResearchTh T-helperInflammationTNF tumor necrosis factorIBD inflammatory bowel diseaseHepatologyRT-qPCR quantitative reverse-transcription polymerase chain reactionAICAR 5-aminoimidazole-4-carboxamide-1-β-4-ribofuranosideTDAG8 T-cell death-associated gene 8 (GPR65)Inflammatory Bowel DiseaseGRP65GastroenterologyHypoxia (medical)Molecular biologyGPR G-protein–coupled receptormRNA messenger RNAIL interleukinChIP chromatin immunoprecipitationHIF hypoxia-inducible factorUC ulcerative colitis030104 developmental biologyHypoxia-inducible factorsCancer researchCD Crohn's diseaselcsh:Diseases of the digestive system. GastroenterologyTumor necrosis factor alphaFCS fetal calf serummedicine.symptomChromatin immunoprecipitationHomeostasisCellular and Molecular Gastroenterology and Hepatology
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Flipping of alkylated DNA damage bridges base and nucleotide excision repair

2009

Alkyltransferase-like proteins (ATLs) share functional motifs with the cancer chemotherapy target O6-alkylguanine-DNA alkyltransferase (AGT) and paradoxically protect cells from the biological effects of DNA alkylation damage, despite lacking the reactive cysteine and alkyltransferase activity of AGT. Here we determine Schizosaccharomyces pombe ATL structures without and with damaged DNA containing the endogenous lesion O6-methylguanine or cigarette-smoke-derived O6-4-(3-pyridyl)-4-oxobutylguanine. These results reveal non-enzymatic DNA nucleotide flipping plus increased DNA distortion and binding pocket size compared to AGT. Our analysis of lesion-binding site conservation identifies new A…

0303 health sciencesMultidisciplinarybiologyDNA damageDNA repair030302 biochemistry & molecular biologybiology.organism_classification03 medical and health sciencesDNA Alkylationchemistry.chemical_compoundchemistryBiochemistryhemic and lymphatic diseasesparasitic diseasesSchizosaccharomyces pombeERCC1DNA030304 developmental biologyAlkyltransferaseNucleotide excision repairNature
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