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b-Defensin 19/119 mediates sperm chemotaxis and is associated with idiopathic infertility

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机构: [1]Department of Laboratory Medicine, Peking University Shenzhen Hospital, Lianhua Road No. 1120, Futian District, Shenzhen, PR China [2]Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HongKong SAR, PR China [3]State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing MedicalUniversity, Nanjing, PR China [4]Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, PR China [5]The University of Hong Kong-Shenzhen Hospital, Shenzhen, PR China [6]Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, PR China [7]School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, PR China [8]Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People’s Hospital, First Affiliated Hospital of Shenzhen University,Shenzhen, PR China [9]Sichuan University-The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine, West China Second UniversityHospital, Chengdu, PR China [10]Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, PR China
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Sperm chemotaxis is required for guiding sperm toward the egg. However, the molecular identity of physiological chemoattractant and its involvement in infertility remain elusive. Here, we identify DEFB19/119 (mouse/human orthologs) as a physiological sperm chemoattractant. The epithelia of the female reproductive tract and the cumulus-oocyte complex secrete DEFB19/119 that elicits calcium mobilization via the CatSper channel and induces sperm chemotaxis in capacitated sperm. Manipulating the level of DEFB19 in mice determines the number of sperm arriving at the fertilization site. Importantly, we identify exon mutations in the DEFB119 gene in idiopathic infertile women with low level of DEFB119 in the follicular fluid. The level of DEFB119 correlates with the chemotactic potency of follicular fluid and predicts the infertile outcome with positive correlation. This study reveals the pivotal role of DEFB19/119 in sperm chemotaxis and demonstrates its potential application in the diagnosis of idiopathic infertility.Copyright © 2022 The Author(s). Published by Elsevier Inc. All rights reserved.

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出版当年[2022]版:
大类 | 1 区 医学
小类 | 1 区 医学:研究与实验 2 区 细胞生物学
最新[2023]版:
大类 | 1 区 医学
小类 | 1 区 医学:研究与实验 2 区 细胞生物学
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出版当年[2022]版:
Q1 CELL BIOLOGY Q1 MEDICINE, RESEARCH & EXPERIMENTAL
最新[2023]版:
Q1 CELL BIOLOGY Q1 MEDICINE, RESEARCH & EXPERIMENTAL

影响因子: 最新[2023版] 最新五年平均 出版当年[2022版] 出版当年五年平均 出版前一年[2021版] 出版后一年[2023版]

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第一作者机构: [1]Department of Laboratory Medicine, Peking University Shenzhen Hospital, Lianhua Road No. 1120, Futian District, Shenzhen, PR China [2]Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HongKong SAR, PR China
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通讯机构: [2]Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HongKong SAR, PR China [7]School of Biomedical Sciences Core Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, PR China [9]Sichuan University-The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine, West China Second UniversityHospital, Chengdu, PR China
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