m6A methylation of RNF43 inhibits the progression of endometriosis through regulating oxidative phosphorylation via NDUFS1

Author:

Tang Yuxia1,Lu Xingfei1,Lin Kexin2,Li Jiayi1,Yuan Ming3,Lin Kaiqing4ORCID

Affiliation:

1. The Second Affiliated School of Zhejiang Chinese Medical University Hangzhou China

2. Zhejiang University ZJU‐Uoe institute Haining China

3. Hangzhou Normal University Division of Health Sciences Hangzhou China

4. Department of Gynecology and Obstetrics Integrated Chinese and Western Medicine Hospital of Zhejiang Province Hangzhou China

Abstract

AbstractOxidative phosphorylation is becoming increasingly important in the induction and development of endometriosis. Recently, it has been reported that ring finger protein 43 (RNF43) is involved in the process of oxidative phosphorylation, but the mechanism remains unclear. Our investigation is to delve into the roles of RNF43 in endometriosis and elucidate the related mechanisms. We found RNF43 was downregulated in ectopic endometrial tissue and primary ectopic endometrial stromal cells (ECESCs). Knockdown of RNF43 enhanced cell viability and migration by activating oxidative phosphorylation in eutopic endometrial stromal cells (EUESCs), while overexpression of RNF43 led to the opposite results. Moreover, RNF43 reinforced the ubiquitination and degradation of NADH dehydrogenase Fe‐S protein 1 (NDUFS1) by interacting with it. Likewise to RNF43 overexpression, NDUFS1 silencing inhibited cell viability, migration, and oxidative phosphorylation in ECESCs. NDUFS1 was a downstream target of RNF43, mediating its biological role in endometriosis. Interestingly, the expression and stability of RNF43 mRNA were regulated by the Methyltransferase‐like 3 (METTL3)/IGF2BP2 m6A modification axis. The results of rat experiments showed decreased RNF43 expression and increased NDUFS1 expression in endometriosis rats, which was enhanced by METTL3 inhibition. Those observations indicated that m6A methylation‐mediated RNF43 negatively affects viability and migration of endometrial stromal cells through regulating oxidative phosphorylation via NDUFS1. The discovery of METTL3/RNF43/NDUFS1 axis suggested promising therapeutic targets for endometriosis.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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