PMID- 34816741 OWN - NLM STAT- MEDLINE DCOM- 20211125 LR - 20220531 IS - 1473-2300 (Electronic) IS - 0300-0605 (Print) IS - 0300-0605 (Linking) VI - 49 IP - 11 DP - 2021 Nov TI - Chemerin regulates autophagy to participate in polycystic ovary syndrome. PG - 3000605211058376 LID - 10.1177/03000605211058376 [doi] LID - 03000605211058376 AB - OBJECTIVE: Polycystic ovary syndrome (PCOS) is a prevalent endocrine disorder in women of reproductive age. Chemerin has recently been discovered as a novel adipokine associated with obesity and metabolic syndrome. Excessive autophagy activity and overexpression of autophagy-related genes in follicular granulosa cells are important mechanisms of PCOS. This study aimed to investigate the effect of chemerin on autophagy in PCOS. METHODS: A rat model of PCOS was established by subcutaneous injection of testosterone propionate under a high-fat diet. Expression levels of chemerin and its receptor CMKLR1 were determined by real-time polymerase chain reaction and western blot. Proliferation and apoptosis of human granulosa cells in vitro and expression of autophagy-related genes were examined using bafilomycin A1 (autophagy inhibitor) and Torin1 (autophagy inducer). RESULTS: Chemerin and CMKLR1 expression were significantly increased in the ovary in a rat model of PCOS. Ectopic expression of chemerin promoted the proliferation and inhibited the apoptosis of COV434 cells. Ectopic expression of chemerin also induced autophagy by inhibiting the phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling pathway. CONCLUSIONS: Chemerin and CMKLR1 were overexpressed in PCOS rats. Chemerin promoted autophagy through inhibiting the PI3K/Akt/mTOR pathway, and may provide a potential target and biomarker of PCOS. FAU - Luo, Xiaodong AU - Luo X AD - Department of Obstetrics and Gynecology, 585250The Second Affiliated Hospital of Chongqing Medical University, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing, P. R. China. FAU - Gong, Yangyang AU - Gong Y AD - Department of Obstetrics and Gynecology, 585250The Second Affiliated Hospital of Chongqing Medical University, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing, P. R. China. FAU - Cai, Liuyun AU - Cai L AD - Department of Obstetrics and Gynecology, 585250The Second Affiliated Hospital of Chongqing Medical University, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing, P. R. China. FAU - Zhang, Lei AU - Zhang L AD - Department of Obstetrics and Gynecology, 585250The Second Affiliated Hospital of Chongqing Medical University, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing, P. R. China. FAU - Dong, Xiaojing AU - Dong X AUID- ORCID: 0000-0001-8506-9362 AD - Department of Obstetrics and Gynecology, 585250The Second Affiliated Hospital of Chongqing Medical University, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing, P. R. China. LA - eng PT - Journal Article PL - England TA - J Int Med Res JT - The Journal of international medical research JID - 0346411 RN - 0 (Chemokines) RN - 0 (Cmklr1 protein, rat) RN - 0 (Rarres2 protein, rat) RN - 0 (Receptors, Chemokine) SB - IM MH - Animals MH - *Autophagy MH - *Chemokines/genetics MH - Disease Models, Animal MH - Female MH - Granulosa Cells MH - Humans MH - Phosphatidylinositol 3-Kinases/genetics MH - *Polycystic Ovary Syndrome/genetics MH - Rats MH - Receptors, Chemokine PMC - PMC8647268 OTO - NOTNLM OT - CMKLR1 OT - COV434 granulosa cell OT - Polycystic ovary syndrome OT - autophagy OT - chemerin OT - mammalian target of rapamycin COIS- Declaration of conflicting interest: The authors declare that there is no conflict of interest. EDAT- 2021/11/25 06:00 MHDA- 2021/11/26 06:00 PMCR- 2021/11/24 CRDT- 2021/11/24 08:44 PHST- 2021/11/24 08:44 [entrez] PHST- 2021/11/25 06:00 [pubmed] PHST- 2021/11/26 06:00 [medline] PHST- 2021/11/24 00:00 [pmc-release] AID - 10.1177_03000605211058376 [pii] AID - 10.1177/03000605211058376 [doi] PST - ppublish SO - J Int Med Res. 2021 Nov;49(11):3000605211058376. doi: 10.1177/03000605211058376.