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PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome

BACKGROUND: Polycystic ovary syndrome (PCOS) is one of the most common diseases with the coexistence of reproductive malfunction and metabolic disorders. Previous studies have found increased branched chain amino acid (BCAA) levels in women with PCOS. However, it remains unclear whether BCAA metabol...

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Autores principales: Mu, Liangshan, Ye, Zhenhong, Hu, Junhao, Zhang, Yurong, Chen, Kai, Sun, Haipeng, Li, Rong, Mao, Weian, Long, Xiaoyu, Zhang, Chunmei, Lai, Yuchen, Liu, Jun, Zhao, Yue, Qiao, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9986518/
https://www.ncbi.nlm.nih.gov/pubmed/36863088
http://dx.doi.org/10.1016/j.ebiom.2023.104492
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author Mu, Liangshan
Ye, Zhenhong
Hu, Junhao
Zhang, Yurong
Chen, Kai
Sun, Haipeng
Li, Rong
Mao, Weian
Long, Xiaoyu
Zhang, Chunmei
Lai, Yuchen
Liu, Jun
Zhao, Yue
Qiao, Jie
author_facet Mu, Liangshan
Ye, Zhenhong
Hu, Junhao
Zhang, Yurong
Chen, Kai
Sun, Haipeng
Li, Rong
Mao, Weian
Long, Xiaoyu
Zhang, Chunmei
Lai, Yuchen
Liu, Jun
Zhao, Yue
Qiao, Jie
author_sort Mu, Liangshan
collection PubMed
description BACKGROUND: Polycystic ovary syndrome (PCOS) is one of the most common diseases with the coexistence of reproductive malfunction and metabolic disorders. Previous studies have found increased branched chain amino acid (BCAA) levels in women with PCOS. However, it remains unclear whether BCAA metabolism is causally associated with the risk of PCOS. METHODS: The changes of BCAA levels in the plasma and follicular fluids of PCOS women were detected. Mendelian randomization (MR) approaches were used to explore the potential causal association between BCAA levels and the risk of PCOS. The function of the gene coding the protein phosphatase Mg(2+)/Mn(2+)-dependent 1K (PPM1K) was further explored by using Ppm1k-deficient mouse model and PPM1K down-regulated human ovarian granulosa cells. FINDINGS: BCAA levels were significantly elevated in both plasma and follicular fluids of PCOS women. Based on MR, a potential direct, causal role for BCAA metabolism was revealed in the pathogenesis of PCOS, and PPM1K was detected as a vital driver. Ppm1k-deficient female mice had increased BCAA levels and exhibited PCOS-like traits, including hyperandrogenemia and abnormal follicle development. A reduction in dietary BCAA intake significantly improved the endocrine and ovarian dysfunction of Ppm1k(−/−) female mice. Knockdown of PPM1K promoted the conversion of glycolysis to pentose phosphate pathway and inhibited mitochondrial oxidative phosphorylation in human granulosa cells. INTERPRETATION: Ppm1k deficiency-impaired BCAA catabolism causes the occurrence and development of PCOS. PPM1K suppression disturbed energy metabolism homeostasis in the follicular microenvironment, which provided an underlying mechanism of abnormal follicle development. FUNDING: This study was supported by the 10.13039/501100012166National Key Research and Development Program of China (2021YFC2700402, 2019YFA0802503), the 10.13039/501100001809National Natural Science Foundation of China (81871139, 82001503, 92057107), the CAMS Innovation Fund for Medical Sciences (2019-I2M-5-001), Key Clinical Projects of Peking University Third Hospital (BYSY2022043), the 10.13039/501100002858China Postdoctoral Science Foundation (2021T140600), and the Collaborative Innovation Program of Shanghai Municipal Health Commission (2020CXJQ01).
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spelling pubmed-99865182023-03-07 PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome Mu, Liangshan Ye, Zhenhong Hu, Junhao Zhang, Yurong Chen, Kai Sun, Haipeng Li, Rong Mao, Weian Long, Xiaoyu Zhang, Chunmei Lai, Yuchen Liu, Jun Zhao, Yue Qiao, Jie eBioMedicine Articles BACKGROUND: Polycystic ovary syndrome (PCOS) is one of the most common diseases with the coexistence of reproductive malfunction and metabolic disorders. Previous studies have found increased branched chain amino acid (BCAA) levels in women with PCOS. However, it remains unclear whether BCAA metabolism is causally associated with the risk of PCOS. METHODS: The changes of BCAA levels in the plasma and follicular fluids of PCOS women were detected. Mendelian randomization (MR) approaches were used to explore the potential causal association between BCAA levels and the risk of PCOS. The function of the gene coding the protein phosphatase Mg(2+)/Mn(2+)-dependent 1K (PPM1K) was further explored by using Ppm1k-deficient mouse model and PPM1K down-regulated human ovarian granulosa cells. FINDINGS: BCAA levels were significantly elevated in both plasma and follicular fluids of PCOS women. Based on MR, a potential direct, causal role for BCAA metabolism was revealed in the pathogenesis of PCOS, and PPM1K was detected as a vital driver. Ppm1k-deficient female mice had increased BCAA levels and exhibited PCOS-like traits, including hyperandrogenemia and abnormal follicle development. A reduction in dietary BCAA intake significantly improved the endocrine and ovarian dysfunction of Ppm1k(−/−) female mice. Knockdown of PPM1K promoted the conversion of glycolysis to pentose phosphate pathway and inhibited mitochondrial oxidative phosphorylation in human granulosa cells. INTERPRETATION: Ppm1k deficiency-impaired BCAA catabolism causes the occurrence and development of PCOS. PPM1K suppression disturbed energy metabolism homeostasis in the follicular microenvironment, which provided an underlying mechanism of abnormal follicle development. FUNDING: This study was supported by the 10.13039/501100012166National Key Research and Development Program of China (2021YFC2700402, 2019YFA0802503), the 10.13039/501100001809National Natural Science Foundation of China (81871139, 82001503, 92057107), the CAMS Innovation Fund for Medical Sciences (2019-I2M-5-001), Key Clinical Projects of Peking University Third Hospital (BYSY2022043), the 10.13039/501100002858China Postdoctoral Science Foundation (2021T140600), and the Collaborative Innovation Program of Shanghai Municipal Health Commission (2020CXJQ01). Elsevier 2023-02-28 /pmc/articles/PMC9986518/ /pubmed/36863088 http://dx.doi.org/10.1016/j.ebiom.2023.104492 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Articles
Mu, Liangshan
Ye, Zhenhong
Hu, Junhao
Zhang, Yurong
Chen, Kai
Sun, Haipeng
Li, Rong
Mao, Weian
Long, Xiaoyu
Zhang, Chunmei
Lai, Yuchen
Liu, Jun
Zhao, Yue
Qiao, Jie
PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title_full PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title_fullStr PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title_full_unstemmed PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title_short PPM1K-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
title_sort ppm1k-regulated impaired catabolism of branched-chain amino acids orchestrates polycystic ovary syndrome
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9986518/
https://www.ncbi.nlm.nih.gov/pubmed/36863088
http://dx.doi.org/10.1016/j.ebiom.2023.104492
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