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OGG1 aggravates renal ischemia-reperfusion injury by repressing PINK1-mediated mitophagy. 2023

Fan Zhao, and Jiefu Zhu, and Mingjiao Zhang, and Yanwen Luo, and Yuzhen Li, and Lang Shi, and Jing Huang, and Halinuer Shadekejiang, and Shengyu Dong, and Xiongfei Wu
Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.

Renal ischemia-reperfusion injury (IRI) is mainly responsible for acute kidney injury for which there is no effective therapy. Accumulating evidence has indicated the important role of mitophagy in mitochondrial homeostasis under stress. OGG1 (8-oxoguanine DNA glycosylase) is known for functions in excision repair of nuclear and mitochondrial DNA. However, the role of OGG1 in renal IRI remains unclear. Herein, we identified OGG1, induced during IRI, as a key factor mediating hypoxia-reoxygenation-induced apoptosis in vitro and renal tissue damage in a renal IRI model. We demonstrated that OGG1 expression during IRI negatively regulates mitophagy by suppressing the PINK1/Parkin pathway, thereby aggravating renal ischemic injury. OGG1 knockout and pharmacological inhibition attenuated renal IRI, in part by activating mitophagy. Our results elucidated the damaging role of OGG1 activation in renal IRI, which is associated with the regulatory role of the PINK1/Parkin pathway in mitophagy.

UI MeSH Term Description Entries
D011494 Protein Kinases A family of enzymes that catalyze the conversion of ATP and a protein to ADP and a phosphoprotein. Protein Kinase,Kinase, Protein,Kinases, Protein
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015427 Reperfusion Injury Adverse functional, metabolic, or structural changes in tissues that result from the restoration of blood flow to the tissue (REPERFUSION) following ISCHEMIA. Ischemia-Reperfusion Injury,Injury, Ischemia-Reperfusion,Injury, Reperfusion,Reperfusion Damage,Damage, Reperfusion,Injury, Ischemia Reperfusion,Ischemia Reperfusion Injury,Ischemia-Reperfusion Injuries,Reperfusion Damages,Reperfusion Injuries
D044767 Ubiquitin-Protein Ligases A diverse class of enzymes that interact with UBIQUITIN-CONJUGATING ENZYMES and ubiquitination-specific protein substrates. Each member of this enzyme group has its own distinct specificity for a substrate and ubiquitin-conjugating enzyme. Ubiquitin-protein ligases exist as both monomeric proteins multiprotein complexes. Ubiquitin-Protein Ligase,E3 Ligase,E3 Ubiquitin Ligase,Ubiquitin Ligase E3,Ubiquitin-Protein Ligase E3,Ligase E3, Ubiquitin,Ligase E3, Ubiquitin-Protein,Ligase, E3,Ligase, E3 Ubiquitin,Ligase, Ubiquitin-Protein,Ligases, Ubiquitin-Protein,Ubiquitin Ligase, E3,Ubiquitin Protein Ligase,Ubiquitin Protein Ligase E3,Ubiquitin Protein Ligases
D045647 DNA Glycosylases A family of DNA repair enzymes that recognize damaged nucleotide bases and remove them by hydrolyzing the N-glycosidic bond that attaches them to the sugar backbone of the DNA molecule. The process called BASE EXCISION REPAIR can be completed by a DNA-(APURINIC OR APYRIMIDINIC SITE) LYASE which excises the remaining RIBOSE sugar from the DNA. DNA N-glycosidase,DNA Glycosylase,Methylpurine DNA Glycosylase,DNA Glycosylase, Methylpurine,DNA N glycosidase,Glycosylase, DNA,Glycosylase, Methylpurine DNA,Glycosylases, DNA
D063306 Mitophagy Proteolytic breakdown of the MITOCHONDRIA via autophagy. Mitochondrial Degradation

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