Biomaterial Database

One Ring to Rule Them All: Mitochondrial Circular RNAs Control Mitochondrial Function. 2020

Lichong Yan, and Y Grace Chen

Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA.

Circular RNAs (circRNAs) have emerged as key regulators of a wide variety of biological processes, but the roles of mitochondrial circRNAs are largely unknown. In this issue of Cell, Zhao et al. (2020) reveal that mitochondrial DNA-encoded circRNAs interact with ATP synthase subunit β (ATP5B) to inhibit the output of mitochondrial reactive oxygen species and the activation of liver fibroblasts, which regulate the pathogenesis of liver disease.

UI	MeSH Term	Description	Entries
D008928	Mitochondria	Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed)	Mitochondrial Contraction,Mitochondrion,Contraction, Mitochondrial,Contractions, Mitochondrial,Mitochondrial Contractions
D005347	Fibroblasts	Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.	Fibroblast
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000079962	RNA, Circular	RNA molecules in which the 3' and 5' ends are covalently joined to form a closed continuous loop. They are resistant to digestion by EXORIBONUCLEASES.	Circular Intronic RNA,Circular RNA,Circular RNAs,Closed Circular RNA,ciRNA,circRNA,circRNAs,Circular RNA, Closed,Intronic RNA, Circular,RNA, Circular Intronic,RNA, Closed Circular,RNAs, Circular
D065626	Non-alcoholic Fatty Liver Disease	Fatty liver finding without excessive ALCOHOL CONSUMPTION.	Fatty Liver, Nonalcoholic,NAFLD,Nonalcoholic Fatty Liver Disease,Nonalcoholic Steatohepatitis,Fatty Livers, Nonalcoholic,Liver, Nonalcoholic Fatty,Livers, Nonalcoholic Fatty,Non alcoholic Fatty Liver Disease,Nonalcoholic Fatty Liver,Nonalcoholic Fatty Livers,Nonalcoholic Steatohepatitides,Steatohepatitides, Nonalcoholic,Steatohepatitis, Nonalcoholic