METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility

Abstract Background Endometriosis-related infertility is a common worldwide reproductive health concern. Despite ongoing research, the causes of infertility remain unclear. Evidence suggests that epigenetic regulation is crucial in reproduction. However, the role of N6-methyladenosine (m6A) modifica...

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Main Authors: Xiaoou Li, Jie Jin, Xuefeng Long, Ruiwen Weng, Wenqian Xiong, Jiaxin Liang, Junjun Liu, Jingwen Sun, Xueqin Cai, Ling Zhang, Yi Liu
Format: Article
Language:English
Published: BMC 2023-10-01
Series:Reproductive Biology and Endocrinology
Subjects:
Online Access:https://doi.org/10.1186/s12958-023-01151-0
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author Xiaoou Li
Jie Jin
Xuefeng Long
Ruiwen Weng
Wenqian Xiong
Jiaxin Liang
Junjun Liu
Jingwen Sun
Xueqin Cai
Ling Zhang
Yi Liu
author_facet Xiaoou Li
Jie Jin
Xuefeng Long
Ruiwen Weng
Wenqian Xiong
Jiaxin Liang
Junjun Liu
Jingwen Sun
Xueqin Cai
Ling Zhang
Yi Liu
author_sort Xiaoou Li
collection DOAJ
description Abstract Background Endometriosis-related infertility is a common worldwide reproductive health concern. Despite ongoing research, the causes of infertility remain unclear. Evidence suggests that epigenetic regulation is crucial in reproduction. However, the role of N6-methyladenosine (m6A) modification of RNA in endometriosis-related infertility requires further investigation. Methods We examined the expression of m6A and methyltransferase-like 3 (METTL3) in endometrial samples taken from normal fertile women in the proliferative phase (the NP group) or the mid-secretory phase (the NS group) or from women with endometriosis-related infertility at the mid-secretory phase (the ES group). We treated primary endometrial stromal cells (ESCs) with medroxyprogesterone acetate and 8-Bromo-cyclic adenosine monophosphate for in vitro decidualization and detected the expression of m6A, METTL3, and decidual markers. We analyzed the expression of m6A, METTL3, and forkhead box O1 (FOXO1) in ESCs from normal fertile women (the ND group) or women with endometriosis-related infertility (the ED group). We also assessed the expression of m6A, METTL3, and decidual markers, as well as the embryo adhesion rate, upon METTL3 overexpression or knockdown. Additionally, we investigated the role of METTL3 in embryo implantation in vivo by applying mice with endometriosis. Furthermore, we performed RNA stability assays, RNA immunoprecipitation (RIP), and methylated RIP assays to explore the mechanisms underlying the regulation of FOXO1 by METTL3-mediated m6A. Results The expression of m6A and METTL3 was reduced only in the NS group; the NP and ES groups demonstrated increased m6A and METTL3 levels. m6A and METTL3 levels decreased in ESCs with prolonged decidual treatment. Compared to the ND group, m6A and METTL3 levels in the ED group increased after decidual treatment, whereas the expression of FOXO1 decreased. METTL3 overexpression suppressed the expression of decidual markers and embryo implantation in vitro; METTL3 knockdown exhibited the opposite effect. Inhibition of METTL3 promoted embryo implantation in vivo. Furthermore, we observed that METTL3-mediated m6A regulated the degradation of FOXO1 mRNA through YTHDF2, a m6A binding protein. Conclusions METTL3-regulated m6A promotes YTHDF2-mediated decay of FOXO1 mRNA, thereby affecting cellular decidualization and embryo implantation. These findings provide novel insights into the development of therapies for women with endometriosis-related infertility.
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spelling doaj.art-f5890f11bbc74e4d82795229411cabcc2023-10-29T12:40:28ZengBMCReproductive Biology and Endocrinology1477-78272023-10-0121111710.1186/s12958-023-01151-0METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertilityXiaoou Li0Jie Jin1Xuefeng Long2Ruiwen Weng3Wenqian Xiong4Jiaxin Liang5Junjun Liu6Jingwen Sun7Xueqin Cai8Ling Zhang9Yi Liu10Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyAbstract Background Endometriosis-related infertility is a common worldwide reproductive health concern. Despite ongoing research, the causes of infertility remain unclear. Evidence suggests that epigenetic regulation is crucial in reproduction. However, the role of N6-methyladenosine (m6A) modification of RNA in endometriosis-related infertility requires further investigation. Methods We examined the expression of m6A and methyltransferase-like 3 (METTL3) in endometrial samples taken from normal fertile women in the proliferative phase (the NP group) or the mid-secretory phase (the NS group) or from women with endometriosis-related infertility at the mid-secretory phase (the ES group). We treated primary endometrial stromal cells (ESCs) with medroxyprogesterone acetate and 8-Bromo-cyclic adenosine monophosphate for in vitro decidualization and detected the expression of m6A, METTL3, and decidual markers. We analyzed the expression of m6A, METTL3, and forkhead box O1 (FOXO1) in ESCs from normal fertile women (the ND group) or women with endometriosis-related infertility (the ED group). We also assessed the expression of m6A, METTL3, and decidual markers, as well as the embryo adhesion rate, upon METTL3 overexpression or knockdown. Additionally, we investigated the role of METTL3 in embryo implantation in vivo by applying mice with endometriosis. Furthermore, we performed RNA stability assays, RNA immunoprecipitation (RIP), and methylated RIP assays to explore the mechanisms underlying the regulation of FOXO1 by METTL3-mediated m6A. Results The expression of m6A and METTL3 was reduced only in the NS group; the NP and ES groups demonstrated increased m6A and METTL3 levels. m6A and METTL3 levels decreased in ESCs with prolonged decidual treatment. Compared to the ND group, m6A and METTL3 levels in the ED group increased after decidual treatment, whereas the expression of FOXO1 decreased. METTL3 overexpression suppressed the expression of decidual markers and embryo implantation in vitro; METTL3 knockdown exhibited the opposite effect. Inhibition of METTL3 promoted embryo implantation in vivo. Furthermore, we observed that METTL3-mediated m6A regulated the degradation of FOXO1 mRNA through YTHDF2, a m6A binding protein. Conclusions METTL3-regulated m6A promotes YTHDF2-mediated decay of FOXO1 mRNA, thereby affecting cellular decidualization and embryo implantation. These findings provide novel insights into the development of therapies for women with endometriosis-related infertility.https://doi.org/10.1186/s12958-023-01151-0DecidualizationEndometriosisInfertilityN6-methyladenosineMethyltransferase-like 3Forkhead box O1
spellingShingle Xiaoou Li
Jie Jin
Xuefeng Long
Ruiwen Weng
Wenqian Xiong
Jiaxin Liang
Junjun Liu
Jingwen Sun
Xueqin Cai
Ling Zhang
Yi Liu
METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
Reproductive Biology and Endocrinology
Decidualization
Endometriosis
Infertility
N6-methyladenosine
Methyltransferase-like 3
Forkhead box O1
title METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
title_full METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
title_fullStr METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
title_full_unstemmed METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
title_short METTL3-regulated m6A modification impairs the decidualization of endometrial stromal cells by regulating YTHDF2-mediated degradation of FOXO1 mRNA in endometriosis-related infertility
title_sort mettl3 regulated m6a modification impairs the decidualization of endometrial stromal cells by regulating ythdf2 mediated degradation of foxo1 mrna in endometriosis related infertility
topic Decidualization
Endometriosis
Infertility
N6-methyladenosine
Methyltransferase-like 3
Forkhead box O1
url https://doi.org/10.1186/s12958-023-01151-0
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