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Zhi X, Du L, Zhang P, Guo X, Li W, Wang Y, He Q, Wu P, Lei X, Qu B. BPA induces testicular damage in male rodents via apoptosis, autophagy, and ferroptosis. Food Chem Toxicol 2024; 193:114984. [PMID: 39245402 DOI: 10.1016/j.fct.2024.114984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/03/2024] [Accepted: 09/05/2024] [Indexed: 09/10/2024]
Abstract
Bisphenol A (BPA), chemically known as 2,2-bis(4-hydroxyphenyl) propane, is one of the most common endocrine-disrupting chemicals in our environment. Long-term or high-dose exposure to BPA may lead to testicular damage and adversely affect male reproductive function. In vivo studies on rodents have demonstrated that BPA triggers apoptosis in testicular cells through both intrinsic and extrinsic pathways. Further in vitro studies on spermatogonia, Sertoli cells, and Leydig cells have all confirmed the pro-apoptotic effects of BPA. Given these findings, apoptosis is considered a primary mode of cell death induced by BPA in testicular tissue. In addition, BPA promotes autophagy by altering the activity of the Akt/mTOR pathway and upregulating the expression of autophagy-related genes and proteins. Recent studies have also identified ferroptosis as a significant contributing factor to BPA-induced testicular damage, further complicating the landscape of BPA's effects. This review summarizes natural substances that mitigate BPA-induced testicular damage by inhibiting these cell death pathways. These findings not only highlight potential therapeutic strategies but also underscore the need for further research into the underlying mechanisms of BPA-induced toxicity, particularly as it pertains to human health risk assessment and the development of more effective BPA management strategies.
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Affiliation(s)
- Xiaoyu Zhi
- The First Medical Center of Chinese PLA General Hospital, Beijing, China; Medical School of Chinese People's Liberation Army (PLA), Beijing, China
| | - Lehui Du
- The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Pei Zhang
- The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xingdong Guo
- The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Weiwei Li
- The 81st Group Army Hospital of Chinese PLA, Zhangjiakou, China
| | - Yuan Wang
- The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Qiduo He
- The First Medical Center of Chinese PLA General Hospital, Beijing, China; Medical School of Chinese People's Liberation Army (PLA), Beijing, China
| | - Peien Wu
- The First Medical Center of Chinese PLA General Hospital, Beijing, China; Medical School of Chinese People's Liberation Army (PLA), Beijing, China
| | - Xiao Lei
- The First Medical Center of Chinese PLA General Hospital, Beijing, China.
| | - Baolin Qu
- The First Medical Center of Chinese PLA General Hospital, Beijing, China.
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Hess RA, Park CJ, Soto S, Reinacher L, Oh JE, Bunnell M, Ko CJ. Male animal sterilization: history, current practices, and potential methods for replacing castration. Front Vet Sci 2024; 11:1409386. [PMID: 39027909 PMCID: PMC11255590 DOI: 10.3389/fvets.2024.1409386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 06/10/2024] [Indexed: 07/20/2024] Open
Abstract
Sterilization and castration have been synonyms for thousands of years. Making an animal sterile meant to render them incapable of producing offspring. Castration or the physical removal of the testes was discovered to be the most simple but reliable method for managing reproduction and sexual behavior in the male. Today, there continues to be global utilization of castration in domestic animals. More than six hundred million pigs are castrated every year, and surgical removal of testes in dogs and cats is a routine practice in veterinary medicine. However, modern biological research has extended the meaning of sterilization to include methods that spare testis removal and involve a variety of options, from chemical castration and immunocastration to various methods of vasectomy. This review begins with the history of sterilization, showing a direct link between its practice in man and animals. Then, it traces the evolution of concepts for inducing sterility, where research has overlapped with basic studies of reproductive hormones and the discovery of testicular toxicants, some of which serve as sterilizing agents in rodent pests. Finally, the most recent efforts to use the immune system and gene editing to block hormonal stimulation of testis function are discussed. As we respond to the crisis of animal overpopulation and strive for better animal welfare, these novel methods provide optimism for replacing surgical castration in some species.
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Affiliation(s)
- Rex A. Hess
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
- Epivara, Inc, Champaign, IL, United States
| | - Chan Jin Park
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
- Epivara, Inc, Champaign, IL, United States
| | | | | | - Ji-Eun Oh
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Mary Bunnell
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - CheMyong J. Ko
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
- Epivara, Inc, Champaign, IL, United States
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Wang Y, Chembazhi UV, Yee D, Chen S, Ji J, Wang Y, Nguyen KL, Lin P, Ratti A, Hess R, Qiao H, Ko C, Yang J, Kalsotra A, Mei W. PTBP1 mediates Sertoli cell actin cytoskeleton organization by regulating alternative splicing of actin regulators. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.12.598725. [PMID: 38915624 PMCID: PMC11195235 DOI: 10.1101/2024.06.12.598725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Spermatogenesis is a biological process within the testis that produces haploid spermatozoa for the continuity of species. Sertoli cells are somatic cells in the seminiferous epithelium that orchestrate spermatogenesis. Cyclic reorganization of Sertoli cell actin cytoskeleton is vital for spermatogenesis, but the underlying mechanism remains largely unclear. Here, we report that RNA-binding protein PTBP1 controls Sertoli cell actin cytoskeleton reorganization by programming alternative splicing of actin cytoskeleton regulators. This splicing control enables ectoplasmic specializations, the actin-based adhesion junctions, to maintain the blood-testis barrier and support spermatid transport and transformation. Particularly, we show that PTBP1 promotes actin bundle formation by repressing the inclusion of exon 14 of Tnik, a kinase present at the ectoplasmic specialization. Our results thus reveal a novel mechanism wherein Sertoli cell actin cytoskeleton dynamics is controlled post-transcriptionally by utilizing functionally distinct isoforms of actin regulatory proteins, and PTBP1 is a critical regulatory factor in generating such isoforms.
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Affiliation(s)
- Yuexi Wang
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
- These authors contributed equally to the work
| | - Ullas Valiya Chembazhi
- Department of Biochemistry, The School of Molecular and Cellular Biology, College of Liberal Arts & Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Current address: Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- These authors contributed equally to the work
| | - Danielle Yee
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Current address: University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sijie Chen
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Jie Ji
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Current address: Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Yujie Wang
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Current address: College of Arts and Science, Vanderbilt University, Nashville, TN, USA
| | - Ka Lam Nguyen
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - PoChing Lin
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Antonia Ratti
- Department of Medical Biotechnology and Translational Medicine, Universita degli studi di Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Rex Hess
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Huanyu Qiao
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - CheMyong Ko
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Jing Yang
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Auinash Kalsotra
- Department of Biochemistry, The School of Molecular and Cellular Biology, College of Liberal Arts & Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Division of Nutrition Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Wenyan Mei
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Division of Nutrition Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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Wang HQ, Wu XL, Zhang J, Wang ST, Sang YJ, Li K, Yang CF, Sun F, Li CJ. Meiotic transcriptional reprogramming mediated by cell-cell communications in humans and mice revealed by scATAC-seq and scRNA-seq. Zool Res 2024; 45:601-616. [PMID: 38766744 PMCID: PMC11188612 DOI: 10.24272/j.issn.2095-8137.2023.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/27/2024] [Indexed: 05/22/2024] Open
Abstract
Meiosis is a highly complex process significantly influenced by transcriptional regulation. However, studies on the mechanisms that govern transcriptomic changes during meiosis, especially in prophase I, are limited. Here, we performed single-cell ATAC-seq of human testis tissues and observed reprogramming during the transition from zygotene to pachytene spermatocytes. This event, conserved in mice, involved the deactivation of genes associated with meiosis after reprogramming and the activation of those related to spermatogenesis before their functional onset. Furthermore, we identified 282 transcriptional regulators (TRs) that underwent activation or deactivation subsequent to this process. Evidence suggested that physical contact signals from Sertoli cells may regulate these TRs in spermatocytes, while secreted ENHO signals may alter metabolic patterns in these cells. Our results further indicated that defective transcriptional reprogramming may be associated with non-obstructive azoospermia (NOA). This study revealed the importance of both physical contact and secreted signals between Sertoli cells and germ cells in meiotic progression.
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Affiliation(s)
- Hai-Quan Wang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Xiao-Long Wu
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, China
| | - Jing Zhang
- Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Si-Ting Wang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yong-Juan Sang
- Model Animal Research Center of Medical School, Nanjing University, Nanjing, Nanjing, Jiangsu 210093, China
| | - Kang Li
- Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Chao-Fan Yang
- Liangzhu Laboratory, Zhejiang University, Hangzhou, Zhejiang 311121, China
| | - Fei Sun
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310016, China. E-mail:
| | - Chao-Jun Li
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China. E-mail:
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Kumar L, Solanki S, Jain A, Botts M, Gupta R, Rajput S, Roti Roti E. MAPKs signaling is obligatory for male reproductive function in a development-specific manner. FRONTIERS IN REPRODUCTIVE HEALTH 2024; 6:1330161. [PMID: 38406668 PMCID: PMC10885697 DOI: 10.3389/frph.2024.1330161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/17/2024] [Indexed: 02/27/2024] Open
Abstract
Mitogen-activated protein kinases (MAPKs) represent widely expressed and evolutionarily conserved proteins crucial for governing signaling pathways and playing essential roles in mammalian male reproductive processes. These proteins facilitate the transmission of signals through phosphorylation cascades, regulating diverse intracellular functions encompassing germ cell development in testis, physiological maturation of spermatozoa within the epididymis, and motility regulation at ejaculation in the female reproductive tract. The conservation of these mechanisms appears prevalent across species, including humans, mice, and, to a limited extent, livestock species such as bovines. In Sertoli cells (SCs), MAPK signaling not only regulates the proliferation of immature SCs but also determines the appropriate number of SCs in the testes at puberty, thereby maintaining male fertility by ensuring the capacity for sperm cell production. In germ cells, MAPKs play a crucial role in dynamically regulating testicular cell-cell junctions, supporting germ cell proliferation and differentiation. Throughout spermatogenesis, MAPK signaling ensures the appropriate Sertoli-to-germ cell ratio by regulating apoptosis, controlling the metabolism of developing germ cells, and facilitating the maturation of spermatozoa within the cauda epididymis. During ejaculation in the female reproductive tract, MAPKs regulate two pivotal events-capacitation and the acrosome reaction essential for maintaining the fertility potential of sperm cells. Any disruptions in MAPK pathway signaling possibly may disturb the testicular microenvironment homeostasis, sperm physiology in the male body before ejaculation and in the female reproductive tract during fertilization, ultimately compromising male fertility. Despite decades of research, the physiological function of MAPK pathways in male reproductive health remains inadequately understood. The current review attempts to combine recent findings to elucidate the impact of MAPK signaling on male fertility and proposes future directions to enhance our understanding of male reproductive functions.
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Affiliation(s)
- Lokesh Kumar
- Genus Breeding India Pvt Ltd., Pune, India
- GenusPlc, ABS Global, Windsor, WI, United States
| | - Subhash Solanki
- Genus Breeding India Pvt Ltd., Pune, India
- GenusPlc, ABS Global, Windsor, WI, United States
| | - Ashish Jain
- Department of Microbiology, Smt. CHM College, University of Mumbai, Ulhasnagar, India
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Gjervan SC, Ozgoren OK, Gow A, Stockler-Ipsiroglu S, Pouladi MA. Claudin-11 in health and disease: implications for myelin disorders, hearing, and fertility. Front Cell Neurosci 2024; 17:1344090. [PMID: 38298375 PMCID: PMC10827939 DOI: 10.3389/fncel.2023.1344090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 12/31/2023] [Indexed: 02/02/2024] Open
Abstract
Claudin-11 plays a critical role in multiple physiological processes, including myelination, auditory function, and spermatogenesis. Recently, stop-loss mutations in CLDN11 have been identified as a novel cause of hypomyelinating leukodystrophy (HLD22). Understanding the multifaceted roles of claudin-11 and the potential pathogenic mechanisms in HLD22 is crucial for devising targeted therapeutic strategies. This review outlines the biological roles of claudin-11 and the implications of claudin-11 loss in the context of the Cldn11 null mouse model. Additionally, HLD22 and proposed pathogenic mechanisms, such as endoplasmic reticulum stress, will be discussed.
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Affiliation(s)
- Sophia C. Gjervan
- Department of Medical Genetics, Centre for Molecular Medicine and Therapeutics, Djavad Mowafaghian Centre for Brain Health, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Oguz K. Ozgoren
- Department of Medical Genetics, Centre for Molecular Medicine and Therapeutics, Djavad Mowafaghian Centre for Brain Health, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Alexander Gow
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, United States
| | - Sylvia Stockler-Ipsiroglu
- Department of Pediatrics, The University of British Columbia and BC Children's Hospital, Vancouver, BC, Canada
- Division of Biochemical Genetics, The University of British Columbia and BC Children's Hospital, Vancouver, BC, Canada
| | - Mahmoud A. Pouladi
- Department of Medical Genetics, Centre for Molecular Medicine and Therapeutics, Djavad Mowafaghian Centre for Brain Health, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
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Xiao X, Han Y, Li Q, Zheng D, Cheng CY, Ni Y. Exploring the evolving function of soluble intercellular adhesion molecule-1 in junction dynamics during spermatogenesis. Front Endocrinol (Lausanne) 2024; 14:1281812. [PMID: 38260159 PMCID: PMC10801026 DOI: 10.3389/fendo.2023.1281812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
Intercellular adhesion molecule-1 (ICAM-1) is a transmembrane glycoprotein expressed on immune, endothelial, and epithelial cells. Its ectodomain can be proteolytically cleaved to release a circulating soluble form called sICAM-1. Clinical studies demonstrate sICAM-1 is upregulated in various diseases and associated with disease severity. Research has identified sICAM-1 as a regulator of the blood-testis barrier (BTB) and spermatogenesis. Overexpression of sICAM-1 weakened the BTB in vitro and in vivo, downregulated junction proteins including N-cadherin, γ-catenin, and connexin 43, and caused germ cell loss. This contrasts with barrier-strengthening effects of membrane-bound ICAM-1. sICAM-1 may act as a molecular switch enabling germ cells to open BTB and Sertoli-germ cell adhesion for transport across the seminiferous epithelium. While the mechanism remains unclear, reduced SRC family kinase (SFK) signaling was observed following sICAM-1 overexpression. SRC promotes BTB protein endocytosis and degradation, influences cytoskeletal dynamics, and affects cell polarity. As sICAM-1 overexpression phenocopies SRC inhibition, SRC may operate downstream of sICAM-1 in regulating BTB dynamics and spermatogenesis. Investigating sICAM-1's structure-function regions and downstream targets will elucidate the molecular mechanisms of junction disruption. This knowledge could enable strategies targeting sICAM-1/SRC to modulate BTB permeability and treat male infertility or diseases involving endothelial/epithelial barrier dysfunction.
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Affiliation(s)
- Xiang Xiao
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
- Engineering Research Center of Novel Vaccine of Zhejiang Province, Hangzhou Medical College, Hangzhou, China
| | - Yating Han
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Qin Li
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, China
| | - Dongwang Zheng
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - C. Yan Cheng
- Department of Urology and Andrology, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ya Ni
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
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Yan Q, Li T, Zhang Y, Zhao X, Wang Q, Yuan L. Caveolin 1 Regulates the Tight Junctions between Sertoli Cells and Promotes the Integrity of Blood-Testis Barrier in Yak via the FAK/ERK Signaling Pathway. Animals (Basel) 2024; 14:183. [PMID: 38254351 PMCID: PMC10812639 DOI: 10.3390/ani14020183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/18/2023] [Accepted: 01/01/2024] [Indexed: 01/24/2024] Open
Abstract
Yaks, a valuable livestock species endemic to China's Tibetan plateau, have a low reproductive rate. Cryptorchidism is believed to be one of the leading causes of infertility in male yaks. In this study, we compared the morphology of the normal testis of the yak with that of the cryptorchidism, and found dysplasia of the seminiferous tubules, impaired tightness of the Sertoli cells, and a disruption of the integrity of the blood-testis barrier (BTB) in the cryptorchidism. Previous studies have shown that CAV1 significantly contributes to the regulation of cell tight junctions and spermatogenesis. Therefore, we hypothesize that CAV1 may play a regulatory role in tight junctions and BTB in Yaks Sertoli cells, thereby influencing the development of cryptorchidism. Additional analysis using immunofluorescence, qRT-PCR, and Western blotting confirmed that CAV1 expression is up-regulated in yak cryptorchidism. CAV1 over-expression plasmids and small RNA interference sequences were then transfected in vitro into yak Sertoli cells. It was furthermore found that CAV1 has a positive regulatory effect on tight junctions and BTB integrity, and that this regulatory effect is achieved through the FAK/ERK signaling pathway. Taken together, our findings, the first application of CAV1 to yak cryptorchidism, provide new insights into the molecular mechanisms of cell tight junctions and BTB. This paper suggests that CAV1 could be used as a potential therapeutic target for yak cryptorchidism and may provide insight for future investigations into the occurrence of cryptorchidism, the maintenance of a normal physiological environment for spermatogenesis and male reproductive physiology in the yak.
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Affiliation(s)
- Qiu Yan
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
| | - Tianan Li
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
- College of Life Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
| | - Xingxu Zhao
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
- College of Life Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
| | - Qi Wang
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
| | - Ligang Yuan
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; (Q.Y.); (T.L.); (Y.Z.); (X.Z.); (Q.W.)
- Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation, Lanzhou 730070, China
- College of Life Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
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9
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Takeda T, Iwatsuki S, Nozaki S, Okada A, Mizuno K, Umemoto Y, Yasui T. Identification of active spermatogenesis using a multiphoton microscope. Andrology 2023; 11:1147-1156. [PMID: 36597184 DOI: 10.1111/andr.13379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/14/2022] [Accepted: 12/28/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND The sperm retrieval rate of microdissection testicular sperm extraction varies from 25% to 60%. Therefore, it is necessary to establish objective selection criteria for identifying seminiferous tubules with spermatozoa. OBJECTIVES Our aim was to develop a method for identifying spermatogenesis without sectioning testicular tissues. MATERIALS AND METHODS Testicular tissues of 10-week-old normal rats were fixed with 4% paraformaldehyde. Fluorescent labeling of seminiferous tubule nuclei and F-actin was performed, and the specimens were observed without sectioning using a multiphoton microscope. Cryptorchid rats were used as a model lacking elongated spermatids. Multiphoton images were compared with images of normal seminiferous tubules. In addition, seminiferous tubules of 10-week-old normal rats were labeled by testicular interstitial injection of fluorescent probes and observed by a multiphoton microscope without fixation. Terminal deoxynucleotidyl transferase dUTP nick end labeling-stained images of normal and probe-injected testes were compared. RESULTS In fixed seminiferous tubules, elongated spermatids were identified. In addition, F-actin of apical ectoplasmic specialization was observed around elongated spermatids. Furthermore, spermatogenic stages were identified by an array of nuclei or F-actin. In cryptorchid testes, elongated spermatids and F-actin of the apical ectoplasmic specialization were not observed. In testes injected with fluorescent probes, F-actin of the apical ectoplasmic specialization was observed, and spermatogenic stages were identified without fixation. There was no significant difference in the number of terminal deoxynucleotidyl transferase dUTP nick end labeling-positive cells per seminiferous tubule between normal and probe-injected testes. CONCLUSIONS Seminiferous epithelium could be observed without sectioning of tissues by fluorescent probes and a multiphoton microscope. Active spermatogenesis was observed by labeling F-actin with and without fixation. Moreover, the toxicity of fluorescent probes was limited. Our method has a potential for live imaging of testicular tissue.
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Affiliation(s)
- Tomoki Takeda
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Shoichiro Iwatsuki
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Satoshi Nozaki
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Atsushi Okada
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Kentaro Mizuno
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Yukihiro Umemoto
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Takahiro Yasui
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
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Zhang X, Liu Y, Sosa F, Gunewardena S, Crawford PA, Zielen AC, Orwig KE, Wang N. Transcriptional metabolic reprogramming implements meiotic fate decision in mouse testicular germ cells. Cell Rep 2023; 42:112749. [PMID: 37405912 PMCID: PMC10529640 DOI: 10.1016/j.celrep.2023.112749] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 05/24/2023] [Accepted: 06/19/2023] [Indexed: 07/07/2023] Open
Abstract
Nutrient starvation drives yeast meiosis, whereas retinoic acid (RA) is required for mammalian meiosis through its germline target Stra8. Here, by using single-cell transcriptomic analysis of wild-type and Stra8-deficient juvenile mouse germ cells, our data show that the expression of nutrient transporter genes, including Slc7a5, Slc38a2, and Slc2a1, is downregulated in germ cells during meiotic initiation, and this process requires Stra8, which binds to these genes and induces their H3K27 deacetylation. Consequently, Stra8-deficient germ cells sustain glutamine and glucose uptake in response to RA and exhibit hyperactive mTORC1/protein kinase A (PKA) activities. Importantly, expression of Slc38a2, a glutamine importer, is negatively correlated with meiotic genes in the GTEx dataset, and Slc38a2 knockdown downregulates mTORC1/PKA activities and induces meiotic gene expression. Thus, our study indicates that RA via Stra8, a chordate morphogen pathway, induces meiosis partially by generating a conserved nutrient restriction signal in mammalian germ cells by downregulating their nutrient transporter expression.
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Affiliation(s)
- Xiaoyu Zhang
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Center for Reproductive Sciences, Institute for Reproductive and Developmental Sciences (IRDS), University of Kansas Medical Center, Kansas City, KS 66160, USA.
| | - Yan Liu
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Center for Reproductive Sciences, Institute for Reproductive and Developmental Sciences (IRDS), University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Froylan Sosa
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Center for Reproductive Sciences, Institute for Reproductive and Developmental Sciences (IRDS), University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sumedha Gunewardena
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Peter A Crawford
- Department of Medicine, Division of Molecular Medicine, University of Minnesota, Minneapolis, MN 55455, USA; Department of Molecular Biology, Biochemistry, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Amanda C Zielen
- Department of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Kyle E Orwig
- Department of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Ning Wang
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA; Center for Reproductive Sciences, Institute for Reproductive and Developmental Sciences (IRDS), University of Kansas Medical Center, Kansas City, KS 66160, USA.
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11
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Luaces JP, Toro-Urrego N, Otero-Losada M, Capani F. What do we know about blood-testis barrier? current understanding of its structure and physiology. Front Cell Dev Biol 2023; 11:1114769. [PMID: 37397257 PMCID: PMC10307970 DOI: 10.3389/fcell.2023.1114769] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 05/30/2023] [Indexed: 07/04/2023] Open
Abstract
Blood-testis barrier (BTB) creates a particular compartment in the seminiferous epithelium. Contacting Sertoli cell-Sertoli cell plasma membranes possess specialized junction proteins which present a complex dynamic of formation and dismantling. Thus, these specialized structures facilitate germ cell movement across the BTB. Junctions are constantly rearranged during spermatogenesis while the BTB preserves its barrier function. Imaging methods are essential to studying the dynamic of this sophisticated structure in order to understand its functional morphology. Isolated Sertoli cell cultures cannot represent the multiple interactions of the seminiferous epithelium and in situ studies became a fundamental approach to analyze BTB dynamics. In this review, we discuss the contributions of high-resolution microscopy studies to enlarge the body of morphofunctional data to understand the biology of the BTB as a dynamic structure. The first morphological evidence of the BTB was based on a fine structure of the junctions, which was resolved with Transmission Electron Microscopy. The use of conventional Fluorescent Light Microscopy to examine labelled molecules emerged as a fundamental technique for elucidating the precise protein localization at the BTB. Then laser-scanning confocal microscopy allowed the study of three-dimensional structures and complexes at the seminiferous epithelium. Several junction proteins, like the transmembrane, scaffold and signaling proteins, were identified in the testis using traditional animal models. BTB morphology was analyzed in different physiological conditions as the spermatocyte movement during meiosis, testis development, and seasonal spermatogenesis, but also structural elements, proteins, and BTB permeability were studied. Under pathological, pharmacological, or pollutant/toxic conditions, there are significant studies that provide high-resolution images which help to understand the dynamic of the BTB. Notwithstanding the advances, further research using new technologies is required to gain information on the BTB. Super-resolution light microscopy is needed to provide new research with high-quality images of targeted molecules at a nanometer-scale resolution. Finally, we highlight research areas that warrant future studies, pinpointing new microscopy approaches and helping to improve our ability to understand this barrier complexity.
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Affiliation(s)
- J. P. Luaces
- Centro de Altos Estudios en Ciencias Humanas y de la Salud, Universidad Abierta Interamericana, Consejo Nacional de Investigaciones Científicas y Técnicas, CAECIHS.UAI-CONICET, Buenos Aires, Argentina
| | - N. Toro-Urrego
- Centro de Altos Estudios en Ciencias Humanas y de la Salud, Universidad Abierta Interamericana, Consejo Nacional de Investigaciones Científicas y Técnicas, CAECIHS.UAI-CONICET, Buenos Aires, Argentina
| | - M. Otero-Losada
- Centro de Altos Estudios en Ciencias Humanas y de la Salud, Universidad Abierta Interamericana, Consejo Nacional de Investigaciones Científicas y Técnicas, CAECIHS.UAI-CONICET, Buenos Aires, Argentina
| | - F. Capani
- Centro de Altos Estudios en Ciencias Humanas y de la Salud, Universidad Abierta Interamericana, Consejo Nacional de Investigaciones Científicas y Técnicas, CAECIHS.UAI-CONICET, Buenos Aires, Argentina
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
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12
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Lai F, Wang H, Zhao X, Yang K, Cai L, Hu M, Lin L, Xia X, Li W, Cheng H, Zhou R. RNF20 is required for male fertility through regulation of H2B ubiquitination in the Sertoli cells. Cell Biosci 2023; 13:71. [PMID: 37024990 PMCID: PMC10080854 DOI: 10.1186/s13578-023-01018-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Spermatogenesis depends on the supporting of the Sertoli cells and their communications with germ cells. However, the regulation of crosstalk between the Sertoli cells and germ cells remains unclear. RESULTS In this report, we used conditional knockout technology to generate the Sertoli cells-specific knockout of Rnf20 in mice. The Amh-Rnf20-/- male mice were infertile owing to spermatogenic failure that mimic the Sertoli cell-only syndrome (SCOS) in humans. Knockout of Rnf20 resulted in the H2BK120ub loss in the Sertoli cells and impaired the transcription elongation of the Cldn11, a gene encoding a component of tight junction. Notably, RNF20 deficiency disrupted the cell adhesion, caused disorganization of the seminiferous tubules, and led to the apoptotic cell death of both spermatogonia and spermatocytes in the seminiferous tubules. CONCLUSIONS This study describes a Rnf20 knockout mouse model that recapitulates the Sertoli cell-only syndrome in humans and demonstrates that RNF20 is required for male fertility through regulation of H2B ubiquitination in the Sertoli cells.
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Affiliation(s)
- Fengling Lai
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Haoyu Wang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Xinyue Zhao
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Kangning Yang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Le Cai
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Mengxin Hu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Lan Lin
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Xizhong Xia
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Wei Li
- Guangzhou Women and Children's Medical Center, Guangzhou, 510623, China
| | - Hanhua Cheng
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.
| | - Rongjia Zhou
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.
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13
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Cao W, Sun W, Chen S, Jia X, Wang J, Lai S. Comprehensive analysis of microRNA and metabolic profiles in bovine seminal plasma of different semen quality. Front Vet Sci 2023; 10:1088148. [PMID: 37056229 PMCID: PMC10086235 DOI: 10.3389/fvets.2023.1088148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/09/2023] [Indexed: 03/30/2023] Open
Abstract
BackgroundSeminal plasma plays a pivotal role in modulating sperm viability and function. However, the underlying mechanisms have not been fully elucidated.MethodIn this study, the bull semen production records of core breeding farms and bull stations in the past 10 years were analyzed.ResultsWe found that the semen of 5-year-old bulls collected for the first time is of the best quality (p < 0.05). Despite the bull semen collected under the above conditions, low-quality sperm is still obtained from part of bulls due to individual differences. Interestingly, seminal plasma from normal semen is capable of improving low-quality semen motility. To identify the potential key factors in seminal plasma, the differences in miRNA and metabolite profiles between normal and low-quality seminal plasma were analyzed. We found that 59 miRNAs were differently expressed, including 38 up-regulated and 21 down-regulated miRNAs. Three hundred and ninety-one and 327 significantly different metabolites were identified from the positive and negative ion models, respectively. These multiple miRNAs and metabolites collectively contribute to the motility of sperm, subsequently, affect semen quality.DiscussionTogether, these results not only revealed the critical factors of seminal plasma improving sperm quality but also provided potential miRNA- or metabolite-based biomarkers to identify the high semen quality.
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Affiliation(s)
- Wei Cao
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
- College of Animal Science and Technology, Sichuan Province General Station of Animal Husbandry, Chengdu, China
| | - Wenqiang Sun
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Shiyi Chen
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Xianbo Jia
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Jie Wang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Songjia Lai
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Songjia Lai
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14
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Fu J, Liu X, Yin B, Shu P, Peng X. NECL2 regulates blood-testis barrier dynamics in mouse testes. Cell Tissue Res 2023:10.1007/s00441-023-03759-5. [PMID: 36872374 DOI: 10.1007/s00441-023-03759-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 02/08/2023] [Indexed: 03/07/2023]
Abstract
The adhesion protein nectin-like molecule 2 (NECL2) is involved in spermatogenesis and participates in the connections between Sertoli cells and germ cells. Necl2 deficiency leads to infertility in male mice. We found that NECL2 is relatively highly expressed on the cell membranes of preleptotene spermatocytes. It is known that preleptotene spermatocytes pass through the blood-testis barrier (BTB) from the base of the seminiferous tubules to the lumen to complete meiosis. We hypothesized that the NECL2 protein on the surfaces of preleptotene spermatocytes has an effect on the BTB when crossing the barrier. Our results showed that Necl2 deficiency caused the levels of proteins in the BTB to be abnormal, such as those of Claudin 3, claudin 11, and Connexin43. NECL2 interacted and colocalized with adhesion proteins forming the BTB, such as Connexin43, Occludin, and N-cadherin. NECL2 regulated BTB dynamics when preleptotene spermatocytes passed through the barrier, and Necl2 deficiency caused BTB damage. Necl2 deletion significantly affected the testicular transcriptome, especially the expression of spermatogenesis-related genes. These results suggest that before meiosis and spermatid development occur, BTB dynamics regulated by NECL2 are necessary for spermatogenesis.
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Affiliation(s)
- Jun Fu
- National Demonstration Center for Experimental Basic Medical Education, and State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China
| | - Xiao Liu
- State Key Laboratory of Medical Molecular Biology, and Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, No. 5, Dongdan Santiao, Dongcheng District, Beijing, 100005, China
| | - Bin Yin
- State Key Laboratory of Medical Molecular Biology, and Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, No. 5, Dongdan Santiao, Dongcheng District, Beijing, 100005, China
| | - Pengcheng Shu
- State Key Laboratory of Medical Molecular Biology, and Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, No. 5, Dongdan Santiao, Dongcheng District, Beijing, 100005, China
| | - Xiaozhong Peng
- National Demonstration Center for Experimental Basic Medical Education, and State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China. .,State Key Laboratory of Medical Molecular Biology, and Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, No. 5, Dongdan Santiao, Dongcheng District, Beijing, 100005, China.
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15
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Hou L, Wang D, Yin K, Zhang Y, Lu H, Guo T, Li J, Zhao H, Xing M. Polystyrene microplastics induce apoptosis in chicken testis via crosstalk between NF-κB and Nrf2 pathways. Comp Biochem Physiol C Toxicol Pharmacol 2022; 262:109444. [PMID: 36007826 DOI: 10.1016/j.cbpc.2022.109444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/11/2022] [Accepted: 08/18/2022] [Indexed: 11/03/2022]
Abstract
Microplastics (MPs) are a new type of pollutants that are widespread in nature, and their toxic effects on humans or animals are receiving attention. Birds are in a higher ecological niche in nature, and MPs may have potential bioaccumulation and biomagnification risks to birds. The mechanisms underlying the reproductive toxicity of MPs to birds are mainly unknown. To study the reproductive toxicity of MPs to birds, we randomly divided chickens into six groups and exposed polystyrene microplastics (PS-MPs) through drinking water (0, 1, and 100 mg/L) for 28 and 42 days. We found that PS-MPs caused testicular inflammatory infiltration and interstitial hemorrhage, resulting in testicular tissue damage; the expression of Claudin3 and Occludin in the blood-testis barrier (BTB) decreased and may damage the integrity of the BTB. PS-MPs exposure inhibited the expression of the Nrf2-Keap1 pathway, which in turn reduced HO-1 and NQO1, simultaneous GSH and T-AOC were also reduced, resulting in an imbalance of the redox system; in addition, the NF-κB signaling pathway was activated, increasing the expression of TNF-α, COX-2 and iNOS. Under redox system imbalance and inflammatory stress, exposure to PS-MPs led to decreased expression of Bcl-2 and increased Bax, cytc, caspase-8, and caspase-3, etc., activating apoptosis, and ultimately causing testicular damage. These results suggested that PS-MPs exposure led to an imbalance of the redox system and an inflammatory response, inducing both endogenous and exogenous apoptosis, resulting in testicular tissue damage. Our study provides a theoretical basis for reproductive injury mechanisms in chicken.
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Affiliation(s)
- Lulu Hou
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Dongxu Wang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Kai Yin
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Yue Zhang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Hongmin Lu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Tiantian Guo
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Junbo Li
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China
| | - Hongjing Zhao
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China.
| | - Mingwei Xing
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, PR China.
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16
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Higashi T, Saito AC, Fukazawa Y, Furuse M, Higashi AY, Ono M, Chiba H. EpCAM proteolysis and release of complexed claudin-7 repair and maintain the tight junction barrier. J Cell Biol 2022; 222:213688. [PMID: 36378161 PMCID: PMC9671161 DOI: 10.1083/jcb.202204079] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/09/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
TJs maintain the epithelial barrier by regulating paracellular permeability. Since TJs are under dynamically fluctuating intercellular tension, cells must continuously survey and repair any damage. However, the underlying mechanisms allowing cells to sense TJ damage and repair the barrier are not yet fully understood. Here, we showed that proteinases play an important role in the maintenance of the epithelial barrier. At TJ break sites, EpCAM-claudin-7 complexes on the basolateral membrane become accessible to apical membrane-anchored serine proteinases (MASPs) and the MASPs cleave EpCAM. Biochemical data and imaging analysis suggest that claudin-7 released from EpCAM contributes to the rapid repair of damaged TJs. Knockout (KO) of MASPs drastically reduced barrier function and live-imaging of TJ permeability showed that MASPs-KO cells exhibited increased size, duration, and frequency of leaks. Together, our results reveal a novel mechanism of TJ maintenance through the localized proteolysis of EpCAM at TJ leaks, and provide a better understanding of the dynamic regulation of epithelial permeability.
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Affiliation(s)
- Tomohito Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan,Correspondence to Tomohito Higashi:
| | - Akira C. Saito
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Yugo Fukazawa
- Division of Brain Structure and Function, Faculty of Medical Science, Life Science Innovation Center, University of Fukui, Fukui, Japan
| | - Mikio Furuse
- Division of Cell Structure, National Institute for Physiological Sciences, Okazaki, Aichi, Japan,Department of Physiological Sciences, School of Life Science, SOKENDAI (Graduate University for Advanced Studies), Okazaki, Aichi, Japan
| | - Atsuko Y. Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Masahiro Ono
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Hideki Chiba
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
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17
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Zhao Y, Chen MS, Wang JX, Cui JG, Zhang H, Li XN, Li JL. Connexin-43 is a promising target for lycopene preventing phthalate-induced spermatogenic disorders. J Adv Res 2022:S2090-1232(22)00203-X. [PMID: 36087924 DOI: 10.1016/j.jare.2022.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Male infertility is a multifactorial pathological condition and may be a harbinger of future health. Phthalates are ubiquitous environmental contaminants that have been implicated in the global decline in male fertility. Among them, di-(2-ethylhexyl) phthalate (DEHP) is the most prevalently used. Lycopene (LYC) is a possible preventive and therapeutic agent for male infertility owing to its antioxidant properties. The blood-testis barrier (BTB) is formed between Sertoli cells where it creates a unique microenvironment for spermatogenesis. OBJECTIVES We hypothesize that phthalate caused male infertility and LYC plays an important role in phthalate-induced male fertility disorders. METHODS Hematoxylin-eosin (H&E) staining, ultrastructure observation, and fluorescence microscopy were used to examine the morphological changes. RNA-Seq, and western blotting were conducted to detect gene and protein levels. Routine testing for sperm morphology and sperm-egg binding assay were conducted to examine the morphological structure and function of sperm. Cell scratch assay and transepithelial electrical resistance (TER) were used to detect cell migration capacity and barrier integrity. RESULTS In vivo experiments, we showed that LYC prevented DEHP-induced impairment of BTB integrity, which provided a guarantee for the smooth progress of spermatogenesis. LYC improved DEHP-induced change in sperm parameters and fertilization ability. Subsequent in vitro experiments, LYC alleviated MEHP-induced disruption of intercellular junctions in mouse Spermatogonia cells (GC-1 cells) and mouse Sertoli cells (TM4 cells). In MEHP-induced BTB impairment models of Sertoli cells, treatment with LYC or overexpressing connexin-43 (Cx43) promoted cell migration capacity and normalized BTB integrity. Cx43 knockdown inhibited cell migration capacity and perturbed BTB reassembly in LYC preventing DEHP-induced BTB impairment. CONCLUSION Our study provides evidence for the role of LYC in phthalates-induced spermatogenic disorders and points to Cx43 as a potential target for male fertility.
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Affiliation(s)
- Yi Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Ming-Shan Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jia-Xin Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jia-Gen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Hao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Xue-Nan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China.
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18
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Yang Y, Yao M, Zeng J, Zheng D, Li Q, Ni Y, Xiao X. FYN regulates cell adhesion at the blood-testis barrier and the apical ectoplasmic specialization via its effect on Arp3 in the mouse testis. Front Immunol 2022; 13:915274. [PMID: 36016954 PMCID: PMC9396411 DOI: 10.3389/fimmu.2022.915274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
FYN is a non-receptor tyrosine kinase of the SRC family that facilitates virus entry across epithelial tight junctions. However, the role of FYN in mammalian testes in maintaining the blood-testis barrier (BTB) integrity and the adhesion of germ cells to Sertoli cells are not well defined. Here, we show that FYN is a component of the BTB and the apical ectoplasmic specialization (ES) at Sertoli-Sertoli and Sertoli-spermatid interfaces, respectively, and is expressed extensively in mouse testes during postnatal development. FYN was shown to be structurally linked to the actin and microtubule-based cytoskeletons. An in vivo model was used to explore the modulatory effect of FYN on BTB and apical ES dynamics within the testes when adult mice were treated intraperitoneally with CdCl2 (3 mg/kg body weight). The CdCl2-induced epithelial restructuring was associated with a transient increase in the interaction between FYN and the actin branching/nucleation protein Arp3, as well as an induction of Arp3 phosphorylation, which possibly lead to actin cytoskeleton remodeling, resulting in BTB damage and germ cell loss in the seminiferous epithelium. Based on the results, we propose a model in which FYN and Arp3 form a protein complex that is responsible for junction reorganization events at the apical ES and the BTB. It is also possible for viruses to break through the BTB and enter the immunoprivileged testicular microenvironment via this mechanism.
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Affiliation(s)
- Yue Yang
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - Mingxia Yao
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - Jie Zeng
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - Dongwang Zheng
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - Qin Li
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, China
| | - Ya Ni
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
| | - Xiang Xiao
- Center for Reproductive Health, School of Pharmaceutical Sciences, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, China
- Zhejiang Provincial Laboratory of Experimental Animal’s & Nonclinical Laboratory Studies, Hangzhou Medical College, Hangzhou, China
- *Correspondence: Xiang Xiao,
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19
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Molele RA, Ibrahim MIA, Zakariah M, Mahdy MAA, Clift S, Fosgate GT, Brown G. Junctional complexes of the blood-testis barrier in the Japanese quail (Coturnix Coturnix japonica). Acta Histochem 2022; 124:151929. [PMID: 35947890 DOI: 10.1016/j.acthis.2022.151929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 07/11/2022] [Indexed: 11/01/2022]
Abstract
This study investigated the developmental changes in the adherens junctions, gap junctions, as well as tight junctions forming the blood-testis barrier (BTB) in Japanese quail (Coturnix Coturnix japonica) testis. Testicular tissue from pre-pubertal, pubertal, adult, and aged Japanese quail were examined by immunohistochemistry and transmission electron microscopy (TEM). The tight junction proteins claudin-3, claudin-11, occludin and zonula occludens-1 (ZO-1), were generally localised in the cytoplasm of Sertoli cells, spermatogonia, and spermatocytes of pre-pubertal, pubertal, some adult birds. The adherens junction protein E-cadherin had a similar distribution pattern. During pre-pubertal development, the gap junction protein connexin-43 (Cx43) was only localised between Leydig cells in the testicular interstitium. However, TEM revealed the presence of gap junctions between cells of the seminiferous epithelium as early as the pre-pubertal stage. Furthermore, TEM confirmed the presence of tight and adherens junctions in the seminiferous epithelia of all age groups. The findings of this study document age-related differences in the immunolocalisation and intensity of the junctional proteins and the ultrastructure of the junctional complexes forming the BTB in quail testes. Additionally, the junctional complexes forming the BTB in the Japanese quail are well established prior to puberty. This study provides baseline information for the future evaluation of pathological changes in the BTB of avian species at different developmental stages.
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Affiliation(s)
- Reneilwe A Molele
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa.
| | - Mohammed I A Ibrahim
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa; Department of Basic Science, University of West Kordofan, West Kordofan State, Sudan
| | - Musa Zakariah
- Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa; Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Maiduguri, PMB 1069, Maiduguri, Nigeria
| | - Mohamed A A Mahdy
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
| | - Sarah Clift
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa
| | - Geoffrey T Fosgate
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa
| | - Geoffrey Brown
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Private bag X04, Onderstepoort, Pretoria 0110, South Africa
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20
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Kanatsu-Shinohara M, Naoki H, Tanaka T, Tatehana M, Kikkawa T, Osumi N, Shinohara T. Regulation of male germline transmission patterns by the Trp53-Cdkn1a pathway. Stem Cell Reports 2022; 17:1924-1941. [PMID: 35931081 PMCID: PMC9481916 DOI: 10.1016/j.stemcr.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 07/10/2022] [Accepted: 07/10/2022] [Indexed: 10/27/2022] Open
Abstract
A small number of offspring are born from the numerous sperm generated from spermatogonial stem cells (SSCs). However, little is known regarding the rules and molecular mechanisms that govern germline transmission patterns. Here we report that the Trp53 tumor suppressor gene limits germline genetic diversity via Cdkn1a. Trp53-deficient SSCs outcompeted wild-type (WT) SSCs and produced significantly more progeny after co-transplantation into infertile mice. Lentivirus-mediated transgenerational lineage analysis showed that offspring bearing the same virus integration were repeatedly born in a non-random pattern from WT SSCs. However, SSCs lacking Trp53 or Cdkn1a sired transgenic offspring in random patterns with increased genetic diversity. Apoptosis of KIT+ differentiating germ cells was reduced in Trp53- or Cdkn1a-deficient mice. Reduced CDKN1A expression in Trp53-deficient spermatogonia suggested that Cdkn1a limits genetic diversity by supporting apoptosis of syncytial spermatogonial clones. Therefore, the TRP53-CDKN1A pathway regulates tumorigenesis and the germline transmission pattern.
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Affiliation(s)
- Mito Kanatsu-Shinohara
- Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan; AMED-CREST, Chiyodaku, Tokyo 100-0004, Japan
| | - Honda Naoki
- Laboratory of Data-driven Biology, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Takashi Tanaka
- Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Misako Tatehana
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takako Kikkawa
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Noriko Osumi
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takashi Shinohara
- Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan.
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21
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Adegoke EO, Rahman MS, Amjad S, Pang WK, Ryu DY, Park YJ, Pang MG. Bisphenol A damages testicular junctional proteins transgenerationally in mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 302:119067. [PMID: 35231543 DOI: 10.1016/j.envpol.2022.119067] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/08/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Testicular junctions are pivotal to male fertility and regulated by constituent proteins. Increasing evidence suggests that environmental chemicals, including bisphenol A (BPA), may impact these proteins, but whether the impacts persist for generations is not yet known. Here, we investigate the effect of BPA (a ubiquitous endocrine-disrupting chemical) on testis and sperm functions and whether the effects are transferred to subsequent generations. Male mice (F0) were exposed to corn oil (Control) or 5 or 50 mg BPA/kg body weight/day from 6 to 12 weeks of age. The F0 were mated with wild-type females to produce the first filial (F1) generation. F2 and F3 were produced using similar procedures. Our results showed that BPA doses decreased the levels of some junctional proteins partly via binding with estrogen receptors (ERα and Erβ), upregulation of p-ERK1/2, P85, p-JNK and activation of p38 mitogen-activated protein kinase signaling. Consequently, testicular histological abnormalities, disrupted spermatogenesis, decreased sperm count, and inability to fertilize eggs were observed in mice exposed to BPA. These effects were transferred to successive generations (F2), partly through DNA methylation, but mostly alleviated in F3 males. Our findings suggest that paternal exposure to chemicals promoting alteration of testicular junctional proteins and its transgenerational inheritance is a key component of the origin of male reproductive health problems.
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Affiliation(s)
- Elikanah Olusayo Adegoke
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Md Saidur Rahman
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Shereen Amjad
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Won-Ki Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Do-Yeal Ryu
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Yoo-Jin Park
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea.
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22
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Harakal J, Qiao H, Wheeler K, Rival C, Paul AGA, Hardy DM, Cheng CY, Goldberg E, Tung KSK. Exposed and Sequestered Antigens in Testes and Their Protection by Regulatory T Cell-Dependent Systemic Tolerance. Front Immunol 2022; 13:809247. [PMID: 35693780 PMCID: PMC9179417 DOI: 10.3389/fimmu.2022.809247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/07/2022] [Indexed: 12/03/2022] Open
Abstract
Continuous exposure of tissue antigen (Ag) to the autoantigen-specific regulatory T cells (Treg) is required to maintain Treg-dependent systemic tolerance. Thus, testis autoantigens, previously considered as sequestered, may not be protected by systemic tolerance. We now document that the complete testis antigen sequestration is not valid. The haploid sperm Ag lactate dehydrogenase 3 (LDH3) is continuously exposed and not sequestered. It enters the residual body (RB) to egress from the seminiferous tubules and interact with circulating antibody (Ab). Some LDH3 also remains inside the sperm cytoplasmic droplets (CD). Treg-depletion in the DEREG mice that express diphtheria toxin receptor on the Foxp3 promoter results in spontaneous experimental autoimmune orchitis (EAO) and Ab to LDH3. Unlike the wild-type male mice, mice deficient in LDH3 (wild-type female or LDH3 NULL males) respond vigorously to LDH3 immunization. However, partial Treg depletion elevated the wild-type male LDH3 responses to the level of normal females. In contrast to LDH3, zonadhesin (ZAN) in the sperm acrosome displays properties of a sequestered Ag. However, when ZAN and other sperm Ag are exposed by vasectomy, they rapidly induce testis Ag-specific tolerance, which is terminated by partial Treg-depletion, leading to bilateral EAO and ZAN Ab response. We conclude that some testis/sperm Ag are normally exposed because of the unique testicular anatomy and physiology. The exposed Ag: 1) maintain normal Treg-dependent systemic tolerance, and 2) are pathogenic and serve as target Ag to initiate EAO. Unexpectedly, the sequestered Ags, normally non-tolerogenic, can orchestrate de novo Treg-dependent, systemic tolerance when exposed in vasectomy.
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Affiliation(s)
- Jessica Harakal
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
- Department of Microbiology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Hui Qiao
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Karen Wheeler
- Department of Microbiology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Claudia Rival
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Alberta G. A. Paul
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Daniel M. Hardy
- Cell Biology and Biochemistry Department, Texas Tech University Health Science Center (HSC), Lubbock, TX, United States
| | - C. Yan Cheng
- Center for Biomedical Research, Population Council, New York, NY, United States
| | - Erwin Goldberg
- Molecular Biochemistry Department, Northwestern University, Evanstan, IL, United States
| | - Kenneth S. K. Tung
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
- Department of Microbiology, University of Virginia, Charlottesville, VA, United States
- Bierne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
- *Correspondence: Kenneth S. K. Tung,
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23
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Liu H, Zeng X, Ma Y, Chen X, Losiewicz MD, Du X, Tian Z, Zhang S, Shi L, Zhang H, Yang F. Long-term exposure to low concentrations of MC-LR induces blood-testis barrier damage through the RhoA/ROCK pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 236:113454. [PMID: 35367887 DOI: 10.1016/j.ecoenv.2022.113454] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Microcystin-leucine arginine (MC-LR), an emerging water pollutant, produced by cyanobacteria, has an acute testicular toxicity. However, little is known about the chronic toxic effects of MC-LR exposure on the testis at environmental concentrations and the underlying molecular mechanisms. In this study, C57BL/6 J mice were exposed to different low concentrations of MC-LR for 6, 9 and 12 months. The results showed that MC-LR could cause testis structure loss, cell abscission and blood-testis barrier (BTB) damage. Long-term exposure of MC-LR also activated RhoA/ROCK pathway, which was accompanied by the rearrangement of α-Tubulin. Furthermore, MC-LR reduced the levels of the adherens junction proteins (N-cadherin and β-catenin) and the tight junction proteins (ZO-1 and Occludin) in a dose- and time-dependent way, causing BTB damage. MC-LR also reduced the expressions of Occludin, ZO-1, β-catenin, and N-cadherin in TM4 cells, accompanied by a disruption of cytoskeletal proteins. More importantly, the RhoA inhibitor Rhosin ameliorated these MC-LR-induced changes. Together, these new findings suggest that long-term exposure to MC-LR induces BTB damage through RhoA/ROCK activation: involvement of tight junction and adherens junction changes and cytoskeleton disruption. This study highlights a new mechanism for MC-LR-induced BTB disruption and provides new insights into the cause and treatment of BTB disruption.
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Affiliation(s)
- Haohao Liu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xin Zeng
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Ya Ma
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xinghai Chen
- Department of Chemistry and Biochemistry, St Mary's University, San Antonio, TX, USA
| | - Michael D Losiewicz
- Department of Chemistry and Biochemistry, St Mary's University, San Antonio, TX, USA
| | - Xingde Du
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Zhihui Tian
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Shiyu Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Linjia Shi
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Huizhen Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - Fei Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China; Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410008, Hunan, China.
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24
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Liu JB, Chen K, Li ZF, Wang ZY, Wang L. Glyphosate-induced gut microbiota dysbiosis facilitates male reproductive toxicity in rats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150368. [PMID: 34543792 DOI: 10.1016/j.scitotenv.2021.150368] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/08/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Glyphosate (GLY), a ubiquitous environmental pollutant, can result in gut microbiota dysbiosis intimately involving various diseases. The latest research has shown an association between gut microbiota alteration and defective spermatogenesis. Here, we aimed to investigate whether GLY-induced gut microbiota dysbiosis contributed to male reproductive toxicity. Data showed that GLY-exposed rats exhibited male reproductive dysfunction, evidenced by impaired testis architectural structure, reduced sperm motility, together with increased sperm malformation ratio. 16S rDNA sequencing analysis indicated that GLY exposure altered the composition of gut commensal microbiota, of which the relative abundance of Bacteroidetes and Firmicutes phyla was significantly changed. Unexpectedly, the increased abundance of Prevotella_1 and Bacteroides genera was negatively correlated with sperm quality. Mechanistically, the pathological changes in GLY-exposed testis were accompanied by the increased interleukin (IL)-17A production, probably due to gut microbes-derived Th17 cell migration. Furthermore, activation of IL-17A signaling triggered testicular oxidative damage. Taken together, these findings uncover an underlying mechanistic scenario that gut microbiota dysbiosis-driven local IL-17A production is one reason responsible for male reproductive toxicity induced by GLY, which provides new insights into the male reproductive toxicity of GLY in mammals.
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Affiliation(s)
- Jing-Bo Liu
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China
| | - Kai Chen
- New Drug Evaluation Center of Shandong Academy of Pharmaceutical Sciences, Shandong Academy of Pharmaceutical Sciences, 989 Xinluo Street, Ji'nan City 250101, Shandong Province, China
| | - Zi-Fa Li
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan City 250355, Shandong Province, China
| | - Zhen-Yong Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China
| | - Lin Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City 271018, Shandong Province, China.
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25
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Changes in Expression of Specific mRNA Transcripts after Single- or Re-Irradiation in Mouse Testes. Genes (Basel) 2022; 13:genes13010151. [PMID: 35052491 PMCID: PMC8775240 DOI: 10.3390/genes13010151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/04/2022] [Accepted: 01/13/2022] [Indexed: 02/01/2023] Open
Abstract
Alkylating agents and irradiation induce testicular damage, which results in prolonged azoospermia. Even very low doses of radiation can significantly impair testis function. However, re-irradiation is an effective strategy for locally targeted treatments and the pain response and has seen important advances in the field of radiation oncology. At present, little is known about the relationship between the harmful effects and accumulated dose of irradiation derived from continuous low-dose radiation exposure. In this study, we examined the levels of mRNA transcripts encoding markers of 13 markers of germ cell differentiation and 28 Sertoli cell-specific products in single- and re-irradiated mice. Our results demonstrated that re-irradiation induced significantly decreased testicular weights with a significant decrease in germ cell differentiation mRNA species (Spo11, Tnp1, Gfra1, Oct4, Sycp3, Ddx4, Boll, Crem, Prm1, and Acrosin). In the 13 Sertoli cell-specific mRNA species decreased upon irradiation, six mRNA species (Claudin-11,Espn, Fshr, GATA1, Inhbb, and Wt1) showed significant differences between single- and re-irradiation. At the same time, different decreases in Sertoli cell-specific mRNA species were found in single-irradiation (Aqp8, Clu, Cst12, and Wnt5a) and re-irradiation (Tjp1, occludin,ZO-1, and ZO-2) mice. These results indicate that long-term aspermatogenesis may differ after single- and re-irradiated treatment.
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26
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Morgan M, Kumar L, Li Y, Baptissart M. Post-transcriptional regulation in spermatogenesis: all RNA pathways lead to healthy sperm. Cell Mol Life Sci 2021; 78:8049-8071. [PMID: 34748024 DOI: 10.1007/s00018-021-04012-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 01/22/2023]
Abstract
Multiple RNA pathways are required to produce functional sperm. Here, we review RNA post-transcriptional regulation during spermatogenesis with particular emphasis on the role of 3' end modifications. From early studies in the 1970s, it became clear that spermiogenesis transcripts could be stored for days only to be translated at advanced stages of spermatid differentiation. The transition between the translationally repressed and active states was observed to correlate with the shortening of the transcripts' poly(A) tail, establishing a link between RNA 3' end metabolism and male germ cell differentiation. Since then, numerous RNA metabolic pathways have been implicated not only in the progression through spermatogenesis, but also in the maintenance of genomic integrity. Recent studies have characterized the elusive 3' biogenesis of Piwi-interacting RNAs (piRNAs), identified a critical role for messenger RNA (mRNA) 3' uridylation in meiotic progression, established the mechanisms that destabilize transcripts with long 3' untranslated regions (3'UTRs) in post-mitotic cells, and defined the physiological relevance of RNA exonucleases and deadenylases in male germ cells. In this review, we discuss RNA processing in the male germline in the light of the most recent findings. A brief recollection of different RNA-processing events will aid future studies exploring post-transcriptional regulation in spermatogenesis.
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Affiliation(s)
- Marcos Morgan
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, 27709, USA.
| | - Lokesh Kumar
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, 27709, USA
| | - Yin Li
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, 27709, USA
| | - Marine Baptissart
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, 27709, USA
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27
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Francomano D, Sanguigni V, Capogrosso P, Deho F, Antonini G. New Insight into Molecular and Hormonal Connection in Andrology. Int J Mol Sci 2021; 22:ijms222111908. [PMID: 34769341 PMCID: PMC8584869 DOI: 10.3390/ijms222111908] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/16/2021] [Accepted: 10/20/2021] [Indexed: 12/13/2022] Open
Abstract
Hormones and cytokines are known to regulate cellular functions in the testes. These biomolecules induce a broad spectrum of effects on various level of spermatogenesis, and among them is the modulation of cell junction restructuring between Sertoli cells and germ cells in the seminiferous epithelium. Cytokines and androgens are closely related, and both correct testicular development and the maintenance of spermatogenesis depend on their function. Cytokines also play a crucial role in the immune testicular system, activating and directing leucocytes across the endothelial barrier to the inflammatory site, as well as in increasing their adhesion to the vascular wall. The purpose of this review is to revise the most recent findings on molecular mechanisms that play a key role in male sexual function, focusing on three specific molecular patterns, namely, cytokines, miRNAs, and endothelial progenitor cells. Numerous reports on the interactions between the immune and endocrine systems can be found in the literature. However, there is not yet a multi-approach review of the literature underlying the role between molecular patterns and testicular and sexual function.
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Affiliation(s)
- Davide Francomano
- Division of Internal Medicine and Endocrinology, Madonna delle Grazie Hospital, 00049 Rome, Italy
- GCS Point Medical Center, 0010 Rome, Italy
- Correspondence:
| | - Valerio Sanguigni
- Department of Medicine of Systems, University of Rome Tor Vergata, 00100 Rome, Italy;
| | - Paolo Capogrosso
- ASST-Sette Laghi, Circolo & Fondazione Macchi Hospital, University of Insurbria, 21100 Varese, Italy; (P.C.); (F.D.)
| | - Federico Deho
- ASST-Sette Laghi, Circolo & Fondazione Macchi Hospital, University of Insurbria, 21100 Varese, Italy; (P.C.); (F.D.)
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28
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Rey RA. Noncanonical Wnt Signaling in the Integrity of the Blood-Testis Barrier and Sperm Release. Endocrinology 2021; 162:6342110. [PMID: 34351411 PMCID: PMC8377767 DOI: 10.1210/endocr/bqab159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Indexed: 12/05/2022]
Affiliation(s)
- Rodolfo A Rey
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), CONICET–FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, C1425EFD Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Histología, Embriología, Biología Celular y Genética, C1121ABG Buenos Aires, Argentina
- Correspondence: Rodolfo A. Rey, MD, PhD, Centro de Investigaciones Endocrinológicas, “Dr. César Bergadá” (CEDIE), CONICET–FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD Buenos Aires, Argentina.
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29
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Dutta S, Sandhu N, Sengupta P, Alves MG, Henkel R, Agarwal A. Somatic-Immune Cells Crosstalk In-The-Making of Testicular Immune Privilege. Reprod Sci 2021; 29:2707-2718. [PMID: 34580844 DOI: 10.1007/s43032-021-00721-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/22/2021] [Indexed: 11/27/2022]
Abstract
Immunological infertility contributes significantly to the etiology of idiopathic male infertility. Shielding the spermatogenic cells from systemic immune responses is fundamental to secure normal production of spermatozoa. The body's immune system is tuned with the host self-components since the early postnatal period, while sperm first develops during puberty, thus rendering spermatogenic proteins as 'non-self' or 'antigenic.' Development of antibodies to these antigens elicits autoimmune responses affecting sperm motility, functions, and fertility. Therefore, the testes need to establish a specialized immune-privileged microenvironment to protect the allogenic germ cells by orchestration of various testicular cells and resident immune cells. This is achieved through sequestration of antigenic germ cells by blood-testis barrier and actions of various endocrine, paracrine, immune-suppressive, and immunomodulatory mechanisms. The various mechanisms are very complex and need conceptual integration to disclose the exact physiological scenario, and to facilitate detection and management of immunogenic infertility caused by disruption of testicular immune regulation. The present review aims to (a) discuss the components of testicular immune privilege; (b) explain testicular somatic and immune cell interactions in establishing and maintaining the testicular immune micro-environment; and (c) illustrate the integration of multiple mechanisms involved in the control of immune privilege of the testis.
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Affiliation(s)
- Sulagna Dutta
- Department of Oral Biology and Biomedical Sciences, Faculty of Dentistry, MAHSA University, Jenjarom, Selangor , Malaysia
| | - Narpal Sandhu
- Molecular and Cellular Biology, University of California, Berkeley, CA, USA
| | - Pallav Sengupta
- Department of Physiology, Faculty of Medicine, Bioscience and Nursing, MAHSA University, Jenjarom, Selangor , Malaysia
| | - Marco G Alves
- Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Ralf Henkel
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
- LogixX Pharma, Theale, Berkshire, UK
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Mail Code X-11, 10681 Carnegie Avenue, Cleveland, OH, 44195, USA.
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Chen B, Zhu G, Yan A, He J, Liu Y, Li L, Yang X, Dong C, Kee K. IGSF11 is required for pericentric heterochromatin dissociation during meiotic diplotene. PLoS Genet 2021; 17:e1009778. [PMID: 34491997 PMCID: PMC8448346 DOI: 10.1371/journal.pgen.1009778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/17/2021] [Accepted: 08/16/2021] [Indexed: 02/03/2023] Open
Abstract
Meiosis initiation and progression are regulated by both germ cells and gonadal somatic cells. However, little is known about what genes or proteins connecting somatic and germ cells are required for this regulation. Our results show that deficiency for adhesion molecule IGSF11, which is expressed in both Sertoli cells and germ cells, leads to male infertility in mice. Combining a new meiotic fluorescent reporter system with testicular cell transplantation, we demonstrated that IGSF11 is required in both somatic cells and spermatogenic cells for primary spermatocyte development. In the absence of IGSF11, spermatocytes proceed through pachytene, but the pericentric heterochromatin of nonhomologous chromosomes remains inappropriately clustered from late pachytene onward, resulting in undissolved interchromosomal interactions. Hi-C analysis reveals elevated levels of interchromosomal interactions occurring mostly at the chromosome ends. Collectively, our data elucidates that IGSF11 in somatic cells and germ cells is required for pericentric heterochromatin dissociation during diplotene in mouse primary spermatocytes. For sexually reproducing species, the number of chromosomes in a mature germ cell is half that of a typical somatic cell, and its chromosome sequence is not identical to that of parental cell, these changes result from a highly specialized cell division process named meiosis. In contrast to mitosis, germ cells undergo many meiotic-specific regulatory processes during prophase I of meiosis. In mammals, the development of male and female meiotic germ cells relies on completely different microenvironment provided by sexually specialized gonadal somatic cells, but what gene is required for germ cells and gonadal somatic cells to mediate meiosis progression is largely unclear. Here, we construct a fluorescent reporter to trace meiotic prophase in mice, and use it to examine the requirement of IGSF11 in mediating pericentric heterochromatin dissociation during meiosis.
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Affiliation(s)
- Bo Chen
- Center for Stem Cell Biology and Regenerative Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Gengzhen Zhu
- Institute of Immunology and School of Medicine, Tsinghua University, Beijing, China
- Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - An Yan
- Center for Stem Cell Biology and Regenerative Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Jing He
- Center for Stem Cell Biology and Regenerative Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Yang Liu
- MOE Key Laboratory of Bioinformatics, Center for Synthetic & Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Lin Li
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Xuerui Yang
- MOE Key Laboratory of Bioinformatics, Center for Synthetic & Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Chen Dong
- Institute of Immunology and School of Medicine, Tsinghua University, Beijing, China
- Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Kehkooi Kee
- Center for Stem Cell Biology and Regenerative Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
- * E-mail:
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Iwamori T, Iwamori N, Matsumoto M, Imai H, Ono E. Novel localizations and interactions of intercellular bridge proteins revealed by proteomic profiling†. Biol Reprod 2021; 102:1134-1144. [PMID: 31995159 DOI: 10.1093/biolre/ioaa017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 11/17/2019] [Accepted: 01/28/2020] [Indexed: 11/14/2022] Open
Abstract
Intercellular bridges (ICBs) connecting germ cells are essential for spermatogenesis, and their deletion causes male infertility. However, the functions and component factors of ICBs are still unknown. We previously identified novel ICB-associated proteins by proteomics analysis using ICB enrichment. Here, we performed immunoprecipitation-proteomics analyses using antibodies specific to known ICB proteins MKLP1, RBM44, and ectoplasmic specialization-associated protein KIAA1210 and predicted protein complexes in the ICB cores. KIAA1210, its binding protein topoisomerase2B (TOP2B), and tight junction protein ZO1 were identified as novel ICB proteins. On the other hand, as well as KIAA1210 and TOP2B, MKLP1 and RBM44, but not TEX14, were localized at the XY body of spermatocytes, suggesting that there is a relationship between ICB proteins and meiotic chromosomes. Moreover, small RNAs interacted with an ICB protein complex that included KIAA1210, RBM44, and MKLP1. These results indicate dynamic movements of ICB proteins and suggest that ICB proteins could be involved not only in the communication between germ cells but also in their epigenetic regulation. Our results provide a novel perspective on the function of ICBs and could be helpful in revealing the biological function of the ICB.
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Affiliation(s)
- Tokuko Iwamori
- Department of Biomedicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Center of Biomedical Research, Research Center for Human Disease Modeling, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naoki Iwamori
- Department of Biomedicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Center of Biomedical Research, Research Center for Human Disease Modeling, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Laboratory of Zoology, Graduate School of Agriculture, Kyushu University, Fukuoka, Japan and
| | - Masaki Matsumoto
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Hiroyuki Imai
- Department of Biomedicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Center of Biomedical Research, Research Center for Human Disease Modeling, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Etsuro Ono
- Department of Biomedicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Center of Biomedical Research, Research Center for Human Disease Modeling, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Chi X, Luo W, Song J, Li B, Su T, Yu M, Wang T, Wang Z, Liu C, Li Z, He H, Zhan J, Zhang H. Kindlin-2 in Sertoli cells is essential for testis development and male fertility in mice. Cell Death Dis 2021; 12:604. [PMID: 34117213 PMCID: PMC8196014 DOI: 10.1038/s41419-021-03885-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/16/2022]
Abstract
Kindlin-2 is known to play important roles in the development of mesoderm-derived tissues including myocardium, smooth muscle, cartilage and blood vessels. However, nothing is known for the role of Kindlin-2 in mesoderm-derived reproductive organs. Here, we report that loss of Kindlin-2 in Sertoli cells caused severe testis hypoplasia, abnormal germ cell development and complete infertility in male mice. Functionally, loss of Kindlin-2 inhibits proliferation, increases apoptosis, impairs phagocytosis in Sertoli cells and destroyed the integration of blood-testis barrier structure in testes. Mechanistically, Kindlin-2 interacts with LATS1 and YAP, the key components of Hippo pathway. Kindlin-2 impedes LATS1 interaction with YAP, and depletion of Kindlin-2 enhances LATS1 interaction with YAP, increases YAP phosphorylation and decreases its nuclear translocation. For clinical relevance, lower Kindlin-2 expression and decreased nucleus localization of YAP was found in SCOS patients. Collectively, we demonstrated that Kindlin-2 in Sertoli cells is essential for sperm development and male reproduction.
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Affiliation(s)
- Xiaochun Chi
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Weiwei Luo
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Jiagui Song
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Bing Li
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Tiantian Su
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Miao Yu
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Tianzhuo Wang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Zhenbin Wang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Cheng Liu
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China
| | - Zhen Li
- Department of Histology and Embryology, the Fourth Military Medical University, Xi'an, 710032, China
| | - Huiying He
- Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China.
| | - Jun Zhan
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China.
| | - Hongquan Zhang
- Department of Human Anatomy, Histology and Embryology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) and State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, 100191, China.
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Li T, Wang X, Luo R, An X, Zhang Y, Zhao X, Ma Y. Integrating miRNA and mRNA Profiling to Assess the Potential miRNA-mRNA Modules Linked With Testicular Immune Homeostasis in Sheep. Front Vet Sci 2021; 8:647153. [PMID: 34113669 PMCID: PMC8185144 DOI: 10.3389/fvets.2021.647153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 04/07/2021] [Indexed: 12/05/2022] Open
Abstract
Beyond its well-known role in spermatogenesis and androgen production, mammalian testes are increasingly recognized as an immune-privileged organ for protecting autoantigenic germ cells, especially meiotic and postmeiotic germ cells, from systemic immune responses. Despite its importance, the molecular mechanisms underlying this regulation in mammals, including sheep, are far from known. In this study, we searched for the genes associated with testicular immune privilege and assessed their possible modulating mechanisms by analyzing systematic profiling of mRNAs and miRNAs on testicular tissues derived from prepubertal and postpubertal Tibetan sheep acquired by RNA sequencing. We identified 1,118 differentially expressed (DE) mRNAs associated with immunity (245 increased mRNAs and 873 decreased mRNAs) and 715 DE miRNAs (561 increased miRNAs and 154 decreased miRNAs) in postpubertal testes compared with prepuberty. qPCR validations for 20 DE mRNAs and 16 miRNAs showed that the RNA-seq results are reliable. By using Western blot, the postpubertal testes exhibited decreased protein abundance of CD19 and TGFBR2 (two proteins encoded by DE mRNAs) when compared with prepuberty, consistent with mRNA levels. The subsequent immunofluorescent staining showed that the positive signals for the CD19 protein were observed mainly in Sertoli cells and the basement membrane of pre- and postpubertal testes, as well as the prepubertal testicular vascular endothelium. The TGFBR2 protein was found mostly in interstitial cells and germ cells of pre- and postpubertal testes. Functional enrichment analysis indicated that DE mRNAs were mainly enriched in biological processes or pathways strongly associated with the blood–testis barrier (BTB) function. Many decreased mRNAs with low expression abundance were significantly enriched in pathways related to immune response. Also, multiple key miRNA-target negative correlation regulatory networks were subsequently established. Furthermore, we verified the target associations between either oar-miR-29b or oar-miR-1185-3p and ITGB1 by dual-luciferase reporter assay. Finally, a putative schematic model of the miRNA-mRNA-pathway network mediated by immune homeostasis-related genes was proposed to show their potential regulatory roles in sheep testicular privilege. Taken together, we conclude that many immune-related genes identified in this study are negatively regulated by potential miRNAs to participate in the homeostatic regulation of testicular immune privilege of sheep by sustaining BTB function and inhibiting immune responses under normal physiological conditions. This work offers the first global view of the expression profiles of miRNAs/mRNAs involved in sheep testicular immune privilege and how the genes potentially contribute to immune-homeostatic maintenance.
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Affiliation(s)
- Taotao Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China.,Sheep Breeding Biotechnology Engineering Laboratory of Gansu Province, Minqin, China
| | - Xia Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Ruirui Luo
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xuejiao An
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Xingxu Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Youji Ma
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China.,Sheep Breeding Biotechnology Engineering Laboratory of Gansu Province, Minqin, China
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Osawa Y, Murata K, Usui M, Kuba Y, Le HT, Mikami N, Nakagawa T, Daitoku Y, Kato K, Shawki HH, Ikeda Y, Kuno A, Morimoto K, Tanimoto Y, Dinh TTH, Yagami KI, Ema M, Yoshida S, Takahashi S, Mizuno S, Sugiyama F. EXOC1 plays an integral role in spermatogonia pseudopod elongation and spermatocyte stable syncytium formation in mice. eLife 2021; 10:59759. [PMID: 33973520 PMCID: PMC8112867 DOI: 10.7554/elife.59759] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 04/21/2021] [Indexed: 11/13/2022] Open
Abstract
The male germ cells must adopt the correct morphology at each differentiation stage for proper spermatogenesis. The spermatogonia regulates its differentiation state by its own migration. The male germ cells differentiate and mature with the formation of syncytia, failure of forming the appropriate syncytia results in the arrest at the spermatocyte stage. However, the detailed molecular mechanisms of male germ cell morphological regulation are unknown. Here, we found that EXOC1, a member of the Exocyst complex, is important for the pseudopod formation of spermatogonia and spermatocyte syncytia in mice. EXOC1 contributes to the pseudopod formation of spermatogonia by inactivating the Rho family small GTPase Rac1 and also functions in the spermatocyte syncytia with the SNARE proteins STX2 and SNAP23. Since EXOC1 is known to bind to several cell morphogenesis factors, this study is expected to be the starting point for the discovery of many morphological regulators of male germ cells.
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Affiliation(s)
- Yuki Osawa
- Master's Program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Kazuya Murata
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Miho Usui
- School of Medical Sciences, University of Tsukuba, Tsukuba, Japan
| | - Yumeno Kuba
- Master's Program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Hoai Thu Le
- Ph.D Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan
| | - Natsuki Mikami
- Ph.D Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan
| | - Toshinori Nakagawa
- Division of Germ Cell Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Japan.,Department of Basic Biology, School of Life Science, Graduate University for Advanced Studies (Sokendai), Okazaki, Japan
| | - Yoko Daitoku
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Kanako Kato
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Hossam Hassan Shawki
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yoshihisa Ikeda
- Doctoral program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Akihiro Kuno
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan.,Ph.D Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan
| | - Kento Morimoto
- Doctoral program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Yoko Tanimoto
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Tra Thi Huong Dinh
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Ken-Ichi Yagami
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Masatsugu Ema
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Japan
| | - Shosei Yoshida
- Division of Germ Cell Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Okazaki, Japan.,Department of Basic Biology, School of Life Science, Graduate University for Advanced Studies (Sokendai), Okazaki, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Seiya Mizuno
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
| | - Fumihiro Sugiyama
- Laboratory Animal Resource Center, Trans-border Medical Research Center, University of Tsukuba, Tsukuba, Japan
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Lycium barbarum Polysaccharide Ameliorates Heat-Stress-Induced Impairment of Primary Sertoli Cells and the Blood-Testis Barrier in Rat via Androgen Receptor and Akt Phosphorylation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:5574202. [PMID: 34211569 PMCID: PMC8187067 DOI: 10.1155/2021/5574202] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/07/2021] [Accepted: 04/26/2021] [Indexed: 12/02/2022]
Abstract
Male infertility induced by heat stress has been attracting more and more attention. Heat stress not only causes apoptosis of spermatocytes but also has adverse effects on Sertoli cells, further damaging spermatogenesis. Lycium barbarum polysaccharide (LBP) is the main bioactive component of Lycium barbarum, which has a protective effect on male reproduction, but its mechanism is still unclear. In this study, our results proved that LBP blocked the inhibitory effect on the proliferation activity of Sertoli cells after heat stress, reversed the dedifferentiation of Sertoli cells induced by heat stress, and ameliorated the structural integrity of the blood-testis barrier. In addition, it increased the expression of the androgen receptor and activated Akt signaling pathway to resist heat-stress-induced injury of Sertoli cells.
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Isasti-Sanchez J, Münz-Zeise F, Lancino M, Luschnig S. Transient opening of tricellular vertices controls paracellular transport through the follicle epithelium during Drosophila oogenesis. Dev Cell 2021; 56:1083-1099.e5. [PMID: 33831351 DOI: 10.1016/j.devcel.2021.03.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 12/22/2020] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Abstract
Paracellular permeability is regulated to allow solute transport or cell migration across epithelial or endothelial barriers. However, how cell-cell junction dynamics controls paracellular permeability is poorly understood. Here, we describe patency, a developmentally regulated process in Drosophila oogenesis, during which cell vertices in the follicular epithelium open transiently to allow paracellular transport of yolk proteins for uptake by the oocyte. We show that the sequential removal of E-cadherin, N-cadherin, NCAM/Fasciclin 2, and Sidekick from vertices precedes their basal-to-apical opening, while the subsequent assembly of tricellular occluding junctions marks the termination of patency and seals the paracellular barrier. E-cadherin-based adhesion is required to limit paracellular channel size, whereas stabilized adherens junctions, prolonged NCAM/Fasciclin 2 expression, blocked endocytosis, or increased actomyosin contractility prevent patency. Our findings reveal a key role of cell vertices as gateways controlling paracellular transport and demonstrate that dynamic regulation of adhesion and actomyosin contractility at vertices governs epithelial barrier properties.
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Affiliation(s)
- Jone Isasti-Sanchez
- Institute of Animal Physiology, University of Münster, Schlossplatz 8, 48143 Münster, Germany; Cells in Motion (CiM) Interfaculty Center, 48149 Münster, Germany
| | - Fenja Münz-Zeise
- Institute of Animal Physiology, University of Münster, Schlossplatz 8, 48143 Münster, Germany; Cells in Motion (CiM) Interfaculty Center, 48149 Münster, Germany
| | - Mylène Lancino
- Institute of Animal Physiology, University of Münster, Schlossplatz 8, 48143 Münster, Germany; Cells in Motion (CiM) Interfaculty Center, 48149 Münster, Germany
| | - Stefan Luschnig
- Institute of Animal Physiology, University of Münster, Schlossplatz 8, 48143 Münster, Germany; Cells in Motion (CiM) Interfaculty Center, 48149 Münster, Germany.
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37
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Li T, Luo R, Wang X, Wang H, Zhao X, Guo Y, Jiang H, Ma Y. Unraveling Stage-Dependent Expression Patterns of Circular RNAs and Their Related ceRNA Modulation in Ovine Postnatal Testis Development. Front Cell Dev Biol 2021; 9:627439. [PMID: 33816472 PMCID: PMC8017185 DOI: 10.3389/fcell.2021.627439] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/03/2021] [Indexed: 12/13/2022] Open
Abstract
Circular RNAs (circRNAs) have been shown to function in the reproductive systems including testis. However, their expression, as well as function in testicular development of sheep remain undefined. Herein, we performed RNA sequencing to reveal circRNA temporal expression patterns in testes of Tibetan sheep from different stages of maturation (3M, 3-month-old; 1Y, 1-year-old; 3Y, 3-year-old). A total of 3,982, 414, and 4,060 differentially expressed (DE) circRNAs were uncovered from 3M vs 1Y, 1Y vs 3Y, and 3M vs 3Y, respectively. Functional enrichment assessment indicated that the source genes of DE circRNAs were primarily engaged in spermatogenesis and testicular immune privilege including blood-testis barrier (BTB). We subsequently constructed the core circRNA-miRNA-mRNA interaction network for genes related to testicular function, such as spermatogenesis, germ cell development, BTB, and cell cycle/meiosis. Furthermore, we validated the target associations between either circ_024949, circ_026259 or IGF1, and oar-miR-29b in this network, and revealed their similar expression signatures in developmental testes that they were extensively expressed in germ cells, Leydig cells, and Sertoli cells, thus suggesting their broad functions in the functional maintenance of Leydig cells and Sertoli cells, as well as the development and maturation of male germ cells. Meanwhile, circ_026259 was shown to promote IGF1 expression through inhibition of oar-miR-29b in sheep Sertoli cells. This work gives the first global view for the expression and regulation of circRNAs in sheep testis, which will be helpful for providing new insights into the molecular mechanism of ovine testis function.
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Affiliation(s)
- Taotao Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Ruirui Luo
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xia Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Huihui Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xingxu Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yunxia Guo
- College of Life Science, Hebei Agricultural University, Baoding, China
| | - Haitao Jiang
- Wenshang County Inspection and Testing Center, Jining, China
| | - Youji Ma
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
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Zhang X, Gunewardena S, Wang N. Nutrient restriction synergizes with retinoic acid to induce mammalian meiotic initiation in vitro. Nat Commun 2021; 12:1758. [PMID: 33741948 PMCID: PMC7979727 DOI: 10.1038/s41467-021-22021-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 02/23/2021] [Indexed: 02/08/2023] Open
Abstract
The molecular machinery and chromosome structures carrying out meiosis are frequently conserved from yeast to mammals. However, signals initiating meiosis appear divergent: while nutrient restriction induces meiosis in the yeast system, retinoic acid (RA) and its target Stra8 have been shown to be necessary but not sufficient to induce meiotic initiation in mammalian germ cells. Here, we use primary culture of mouse undifferentiated spermatogonia without the support of gonadal somatic cells to show that nutrient restriction in combination with RA is sufficient to induce Stra8- and Spo11-dependent meiotic gene and chromosome programs that recapitulate the transcriptomic and cytologic features of in vivo meiosis. We demonstrate that neither nutrient restriction nor RA alone exerts these effects. Moreover, we identify a distinctive network of 11 nutrient restriction-upregulated transcription factor genes, which are associated with early meiosis in vivo and whose expression does not require RA. Our study proposes a conserved model, in which nutrient restriction induces meiotic initiation by upregulating key transcription factor genes for the meiotic gene program and provides an in vitro platform for meiotic induction that could facilitate research and haploid gamete production.
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Affiliation(s)
- Xiaoyu Zhang
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Sumedha Gunewardena
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Ning Wang
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA.
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Olaniyan OT, Dare A, Okotie GE, Adetunji CO, Ibitoye BO, Bamidele OJ, Eweoya OO. Testis and blood-testis barrier in Covid-19 infestation: role of angiotensin-converting enzyme 2 in male infertility. J Basic Clin Physiol Pharmacol 2020; 31:jbcpp-2020-0156. [PMID: 33006953 DOI: 10.1515/jbcpp-2020-0156] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/21/2020] [Indexed: 02/07/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS- CoV-2) that causes COVID-19 infections penetrates body cells by binding to angiotensin-converting enzyme-2 (ACE2) receptors. Evidence shows that SARS-CoV-2 can also affect the urogenital tract. Hence, it should be given serious attention when treating COVID-19-infected male patients of reproductive age group. Other viruses like HIV, mumps, papilloma and Epstein-Barr can induce viral orchitis, germ cell apoptosis, inflammation and germ cell destruction with attending infertility and tumors. The blood-testis barrier (BTB) and blood-epididymis barrier (BEB) are essential physical barricades in the male reproductive tract located between the blood vessel and seminiferous tubules in the testes. Despite the significant role of these barriers in male reproductive function, studies have shown that a wide range of viruses can still penetrate the barriers and induce testicular dysfunctions. Therefore, this mini-review highlights the role of ACE2 receptors in promoting SARS-CoV-2-induced blood-testis/epididymal barrier infiltration and testicular dysfunction.
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Affiliation(s)
- Olugbemi T Olaniyan
- Laboratory for Reproductive Biology and Developmental Programming, Department of Physiology, Edo University Iyamho, Iyamho, Nigeria
| | - Ayobami Dare
- Department of Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Westville, Durban, South Africa
| | - Gloria E Okotie
- Department of Physiology, University of Ibadan, Ibadan, Nigeria
| | - Charles O Adetunji
- Applied Microbiology, Department of Microbiology, Biotechnology and Nanotechnology Laboratory, Edo University Iyamho, Iyamho, Edo State, Nigeria
| | | | - Okoli J Bamidele
- Institute of Chemical and Biotechnology, Faculty of Computer and Applied Sciences, Vaal University of Technology, Southern Gauteng Science and Technology Park, Department of Chemistry, Vanderbijlpark, South Africa
| | - Olugbenga O Eweoya
- Department of Anatomical Sciences, School of Medicine and Allied Health Sciences, University of the Gambia, Banjul, The Gambia
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Edelsztein NY, Rey RA. Regulation of meiosis initiation in the mammalian testis: novel aspects. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.coemr.2020.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bryan ER, Kim J, Beagley KW, Carey AJ. Testicular inflammation and infertility: Could chlamydial infections be contributing? Am J Reprod Immunol 2020; 84:e13286. [DOI: 10.1111/aji.13286] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/05/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Affiliation(s)
- Emily R. Bryan
- School of Biomedical Sciences Institute of Health and Biomedical Innovation Queensland University of Technology Brisbane Qld Australia
| | - Jay Kim
- School of Biomedical Sciences Institute of Health and Biomedical Innovation Queensland University of Technology Brisbane Qld Australia
| | - Kenneth W. Beagley
- School of Biomedical Sciences Institute of Health and Biomedical Innovation Queensland University of Technology Brisbane Qld Australia
| | - Alison J. Carey
- School of Biomedical Sciences Institute of Health and Biomedical Innovation Queensland University of Technology Brisbane Qld Australia
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Urióstegui-Acosta M, Tello-Mora P, Solís-Heredia MDJ, Ortega-Olvera JM, Piña-Guzmán B, Martín-Tapia D, González-Mariscal L, Quintanilla-Vega B. Methyl parathion causes genetic damage in sperm and disrupts the permeability of the blood-testis barrier by an oxidant mechanism in mice. Toxicology 2020; 438:152463. [PMID: 32294493 DOI: 10.1016/j.tox.2020.152463] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/02/2020] [Accepted: 04/05/2020] [Indexed: 12/12/2022]
Abstract
Methyl parathion (Me-Pa) is an extremely toxic organophosphorus pesticide still used in developing countries. It has been associated with decreased sperm function and fertility and with oxidative and DNA damage. The blood-testis barrier (BTB) is a structure formed by tight junction (TJ) proteins in Sertoli cells and has a critical role in spermatogenesis. We assessed the effect of repeated doses of Me-Pa (3-12 mg/kg/day for 5 days, i.p.) on sperm quality, lipid oxidation, DNA integrity, and BTB permeability in adult male mice and explored oxidation as a mechanism of toxicity. Me-Pa caused dose-dependent effects on sperm quality, lipoperoxidation, and DNA integrity. Testis histology results showed the disruption of spermatogenesis progression and atrophy of seminiferous tubules. The pesticide opened the BTB, as evidenced by the presence of a biotin tracer in the adluminal compartment of the seminiferous tubules. This effect was not observed after 45 days of exposure when a spermatogenic cycle had completed. The coadministration of the antioxidant α-tocopherol (50 mg/kg/day for 5 days, oral) prevented the effects of Me-Pa on sperm quality, DNA and the BTB, indicating the importance of oxidative stress in the damage generated by Me-Pa. As evidenced by immunochemistry, no changes were found in the localization of the TJ proteins of the BTB, although oxidation (carbonylation) of total proteins in testis homogenates was detected. Our results show that Me-Pa disturbs the BTB and that oxidation is involved in the observed toxic effects on sperm cells.
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Affiliation(s)
| | - Pamela Tello-Mora
- Toxicology Department, Cinvestav, Ave. IPN 2508, Colonia Zacatenco, Mexico City, 07360, Mexico
| | | | - José Mario Ortega-Olvera
- Physiology, Biophysics and Neurosciences Department, Cinvestav, Ave. IPN 2508, Colonia Zacatenco, Mexico City, 07360, Mexico
| | - Belem Piña-Guzmán
- National Polytechnic Institute, UPIBI, Ave. Acueducto s/n, Barrio La Laguna, Colonia Ticomán, 07340, Mexico City, Mexico
| | - Dolores Martín-Tapia
- Physiology, Biophysics and Neurosciences Department, Cinvestav, Ave. IPN 2508, Colonia Zacatenco, Mexico City, 07360, Mexico
| | - Lorenza González-Mariscal
- Physiology, Biophysics and Neurosciences Department, Cinvestav, Ave. IPN 2508, Colonia Zacatenco, Mexico City, 07360, Mexico
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Autologous transplantation of spermatogonial stem cells restores fertility in congenitally infertile mice. Proc Natl Acad Sci U S A 2020; 117:7837-7844. [PMID: 32229564 DOI: 10.1073/pnas.1914963117] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The blood-testis barrier (BTB) is thought to be indispensable for spermatogenesis because it creates a special environment for meiosis and protects haploid cells from the immune system. The BTB divides the seminiferous tubules into the adluminal and basal compartments. Spermatogonial stem cells (SSCs) have a unique ability to transmigrate from the adluminal compartment to the basal compartment through the BTB upon transplantation into the seminiferous tubule. Here, we analyzed the role of Cldn11, a major component of the BTB, in spermatogenesis using spermatogonial transplantation. Cldn11-deficient mice are infertile due to the cessation of spermatogenesis at the spermatocyte stage. Cldn11-deficient SSCs failed to colonize wild-type testes efficiently, and Cldn11-deficient SSCs that underwent double depletion of Cldn3 and Cldn5 showed minimal colonization, suggesting that claudins on SSCs are necessary for transmigration. However, Cldn11-deficient Sertoli cells increased SSC homing efficiency by >3-fold, suggesting that CLDN11 in Sertoli cells inhibits transmigration of SSCs through the BTB. In contrast to endogenous SSCs in intact Cldn11-deficient testes, those from WT or Cldn11-deficient testes regenerated sperm in Cldn11-deficient testes. The success of this autologous transplantation appears to depend on removal of endogenous germ cells for recipient preparation, which reprogrammed claudin expression patterns in Sertoli cells. Consistent with this idea, in vivo depletion of Cldn3/5 regenerated endogenous spermatogenesis in Cldn11-deficient mice. Thus, coordinated claudin expression in both SSCs and Sertoli cells expression is necessary for SSC homing and regeneration of spermatogenesis, and autologous stem cell transplantation can rescue congenital defects of a self-renewing tissue.
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Stoffel W, Schmidt-Soltau I, Binczek E, Thomas A, Thevis M, Wegner I. Dietary ω3-and ω6-Polyunsaturated fatty acids reconstitute fertility of Juvenile and adult Fads2-Deficient mice. Mol Metab 2020; 36:100974. [PMID: 32272092 PMCID: PMC7153284 DOI: 10.1016/j.molmet.2020.100974] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 01/17/2023] Open
Abstract
Objective Polyunsaturated fatty acids (PUFAs), including essential fatty acids linoleic and α-linolenic acid and derived long chain and very long chain ω3-and ω6-polyunsaturated fatty acids, are vital structures in mammalian membrane systems and signaling molecules, pivotal in brain development, lipid, and energy metabolism and in female and male fertility during human evolution. Numerous nutritional studies suggest imbalance of PUFA metabolism as a critical factor in the pathogenesis of several human lifestyle diseases: dyslipoproteinemia, obesity, cardiovascular and neurodegenerative diseases, and infertility. The lack of unbiased animal models impedes molecular interpretation of the role of synthesized and dietary supplied PUFAs in these conditions. In this study, we used a Δ6 fatty acid desaturase (FADS2) deficient mouse mutant lacking key enzyme activity in the biosynthesis of ω3-and ω6-PUFAs from EFAs to address the molecular role of PUFAs in female and male fertility. Infertility is a hallmark of the pleiotropic but auxotrophic fads2−/− phenotype and is therefore helpful for stringent dietary studies on the role of individual PUFAs. Methods Feeding regimens: Age- and gender-matched infertile fads2−/− mice were maintained on defined diets, normal diet containing essential fatty acids, and supplemented with ω6-arachidonic acid, ω3-docosahexaenoic acid, and arachidonic/docosahexaenoic acid, starting (a) after weaning and (b) initiated in 4-month-old female and male fads2−/− mice. Phospho- and sphingolipidomes of ovarian and testicular membrane lipid bilayers in each cohort were established and the impact on the expression and topology of membrane marker proteins, membrane morphology, germ cell development, and female and male fertility in the respective cohorts was elaborated. Results PUFA synthesis deficiency caused a halt to folliculogenesis, atresia of oocytes, and infertility of fads2−/− female mice. A PUFA-deficient membrane lipid bilayer core structure led to the disassembly of the gap junction network of the follicular granulosa cells. In fads2−/− testis, the blood-testis barrier was disrupted and spermatogenesis arrested, leading to infertility. Sustained supply of combined AA and DHA remodeled the PUFA-deficient ovarian and testicular membrane lipidomes, facilitating the reassembly of the functional gap junction network for regular ovarian cycles and the reconstitution of the blood-testis barrier in Sertoli cells, reconstituting fertility not only in developing newborns, but surprisingly also in adult infertile fads2−/− mice. Conclusions These findings demonstrate the previously unrecognized membrane structure-based molecular link between nutrient ω3-and ω6-PUFAs, gonadal membrane structures, and female and male fertility and might foster studies of the pivotal role of dietary PUFAs in human fertility. PUFA-depletion disrupts membrane lipid scaffolds of ovarian GJ- and TJ-complexes of the testicular BTB Nutrient AA/DHA reconstitute the gonadal membrane bilayer architecture in auxotrophioc fads2-/- mice AA/DHA replenished lipid-bilayers promote the assembly of follicular GJ- and BTB-protein complexes in fads2-/- mice Nutrient AA/DHA release arrest of oo- and spermatogenesis, restoring fertility of newborn and adult fads2-/- mice
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Affiliation(s)
- Wilhelm Stoffel
- Laboratory of Molecular Neuroscience, Institute of Biochemistry, University of Cologne, 50931, Cologne, Germany; CMMC (Center for Molecular Medicine), Faculty of Medicine, University of Cologne, 50931, Cologne, Germany; CECAD (Cluster of Excellence: Cellular Stress Responses in Aging-Associated Diseases), University of Cologne, 50931, Cologne, Germany.
| | - Inga Schmidt-Soltau
- CMMC (Center for Molecular Medicine), Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
| | - Erika Binczek
- Laboratory of Molecular Neuroscience, Institute of Biochemistry, University of Cologne, 50931, Cologne, Germany
| | - Andreas Thomas
- Institute of Biochemistry, Deutsche Sporthochschule Cologne, 50933, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry, Deutsche Sporthochschule Cologne, 50933, Cologne, Germany
| | - Ina Wegner
- Laboratory of Molecular Neuroscience, Institute of Biochemistry, University of Cologne, 50931, Cologne, Germany
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Expression of claudin-11 in canine prepubertal testes, and in canine adult testes showing normal spermatogenesis, impaired spermatogenesis, or testicular neoplasia. Theriogenology 2020; 148:122-131. [PMID: 32171971 DOI: 10.1016/j.theriogenology.2020.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 01/05/2023]
Abstract
The blood-testis barrier (BTB) consists of different cell-to-cell connections, including tight junction proteins like claudin-11 (CLDN11). For dogs, only limited data is published dealing with these proteins in general. Therefore, their physiological relevance, their postnatal expression, and their distribution pattern in pathological conditions, e.g. in altered spermatogenesis and testicular neoplasia were assessed. Canine testes from routine castrations, and those sent in for diagnostic purposes were investigated. Based on morphological evaluation, the dogs and testes were divided into groups: (1) dogs with normal spermatogenesis, (2) four months old prepubertal dogs, (3) intratubular seminoma, (4) diffuse seminoma, (5) Sertoli cell tumours (SCT), (6) Leydig cell tumours (LCT), and (7) dogs with impaired spermatogenesis (e.g. mixed atrophy). In order to examine possible alterations of the BTB components, immunohistochemistry (IHC) and immunofluorescence using a commercial antibody against CLDN11 was performed. Sertoli cell (SC) nuclei (SOX9) and peritubular myoid cells (smooth-muscle-actin, SMA) were also assessed using IHC. Additionally, semi-quantitative Western-blot (WB) and RT-PCR analyses of CLDN11 were conducted. In tubules with normal spermatogenesis, IHC of CLDN11 revealed a basolateral staining at BTB localisation. In prepubertal cords, CLDN11 was diffusely expressed along the cytoplasmic extensions of SCs supposing that the BTB was neither built up nor functional, yet. A shift from weakly expressed CLDN11 between/in residual SCs in intratubular seminoma to only small CLDN11 immunopositive stained spots in the cytoplasm of remaining SOX9-positive SCs in diffuse seminoma was detectable. Reduction or even loss of CLDN11 expression in diffuse seminoma was confirmed using RT-PCR and WB analyses, thus indicating that in seminoma, CLDN11 was downregulated at transcriptional level and completely lost its sealing function. Basal SCs in SCT still showed a CLDN11/SOX9 co-localisation, suggesting that luminal neoplastic SCs undergo de-differentiation during tumour progression. In LCT, no CLDN11 was detectable. Dogs with mixed atrophy showed an upregulation of CLDN11 in tubules with spermatogenic arrest on mRNA and protein level, leading to the conclusion that within these tubules regulatory mechanisms lost their equilibrium. For the first time, the spatial expression of CLDN11 in prepubertal canine testis, impaired spermatogenesis, intratubular seminoma and its absence in diffuse seminoma and LCT was shown. Since altered CLDN11 levels could be part of adaptive mechanisms to modify BTB integrity, further functional investigations to characterize the canine BTB need to be conducted.
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Liu B, Shen LJ, Zhao TX, Sun M, Wang JK, Long CL, He DW, Lin T, Wu SD, Wei GH. Automobile exhaust-derived PM 2.5 induces blood-testis barrier damage through ROS-MAPK-Nrf2 pathway in sertoli cells of rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:110053. [PMID: 31862514 DOI: 10.1016/j.ecoenv.2019.110053] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) derived from automobile exhaust can lead to serious male spermatogenesis dysfunction, but its specific molecular mechanism is unclear. In this experiment, we focused on the blood-testis barriers (BTB) and explored the intracellular mechanisms underlying the fertility toxicity of PM2.5 originating from automobile exhaust in the primary cultured Sertoli cells(SCs) of rats. After PM2.5 exposure, excessive reactive oxygen species (ROS) and increased apoptosis of SCs were detected. The expression of the BTB related proteins including ZO-1, Occludin, N-cadherin and β-catenin were significantly decreased and the spatial arrangement of F-actin was completely disordered through Immunofluorescence and Western blots tests. The phosphorylation of Jun N-terminal kinase (JNK), extracellular signal regulatory kinase (ERK), p38 mitogen-activated protein kinase (MAPK) were upregulated and nuclear factor (erythroid-derived 2) -like 2-related factor (Nrf2) was downregulated respectively. However, combined utilization of vitamin C and E were observed to prevent the increase of ROS generation, reduce celluar apoptosis, increase the expression of BTB related proteins, reconstructed the spatial arrangement of F-actin as well as improved the Nrf2 expression and attenuated the phosphorylation of the MAPK kinases and cleaved caspase-3 levels. Furthermore, ERK inhibitor (SCH772984), JNK inhibitor (SP600125) and p38 MAPK inhibitor (SB203580) obviously up-regulated BTB-related proteins expression as well as activated Nrf2 expression at varying degrees, indicating that ROS-MAPKs-Nrf2 is involved in the signaling pathway that leads to PM2.5-induced spermatogenesis dysfunction. These findings indicate that PM2.5 derived from automobile exhaust causes oxidative stress, which in turn causes cellular apoptosis of SCs and damage of the blood-testis barrier, resulting male spermatogenesis dysfunction, in which ROS-MAPK-Nrf-2 pathways may play a key role.
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Affiliation(s)
- Bin Liu
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, P.R China
| | - Lian-Ju Shen
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Tian-Xin Zhao
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Mang Sun
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Jun-Ke Wang
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Chun-Lan Long
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Da-Wei He
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Tao Lin
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China
| | - Sheng-de Wu
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China.
| | - Guang-Hui Wei
- Department of Urology, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation base of Child development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China; Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, P.R China.
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Xia Q, Zhang D, Wang J, Zhang X, Song W, Chen R, Li H, Xie W, Zou K. Androgen Indirectly Regulates Gap Junction Component Connexin 43 Through Wilms Tumor-1 in Sertoli Cells. Stem Cells Dev 2020; 29:169-176. [DOI: 10.1089/scd.2019.0166] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Qin Xia
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Danchen Zhang
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jingjing Wang
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiaoyu Zhang
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Weixiang Song
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Rong Chen
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Hua Li
- Bio-ID Center, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Wenhai Xie
- School of Life Sciences, Shandong University of Technology, Zibo, Shandong, China
| | - Kang Zou
- Germline Stem Cells and Microenvironment Lab, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Rahman MS, Pang MG. New Biological Insights on X and Y Chromosome-Bearing Spermatozoa. Front Cell Dev Biol 2020; 7:388. [PMID: 32039204 PMCID: PMC6985208 DOI: 10.3389/fcell.2019.00388] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/23/2019] [Indexed: 12/28/2022] Open
Abstract
A spermatozoon is a male germ cell capable of fertilizing an oocyte and carries genetic information for determining the sex of the offspring. It comprises autosomes and an X (X spermatozoa) or a Y chromosome (Y spermatozoa). The origin and maturation of both X and Y spermatozoa are the same, however, certain differences may exist. Previous studies proposed a substantial difference between X and Y spermatozoa, however, recent studies suggest negligible or no differences between these spermatozoa with respect to ratio, shape and size, motility and swimming pattern, strength, electric charge, pH, stress response, and aneuploidy. The only difference between X and Y spermatozoa lies in their DNA content. Moreover, recent proteomic and genomic studies have identified a set of proteins and genes that are differentially expressed between X and Y spermatozoa. Therefore, the difference in DNA content might be responsible for the differential expression of certain genes and proteins between these cells. In this review, we have compiled our present knowledge to compare X and Y spermatozoa with respect to their structural, functional, and molecular features. In addition, we have highlighted several areas that could be explored in future studies in this field.
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Affiliation(s)
- Md Saidur Rahman
- Department of Animal Science and Technology and BET Research Institute, Chung-Ang University, Anseong, South Korea
| | - Myung-Geol Pang
- Department of Animal Science and Technology and BET Research Institute, Chung-Ang University, Anseong, South Korea
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Liu S, Li H, Wu S, Li L, Ge R, Cheng CY. NC1-peptide regulates spermatogenesis through changes in cytoskeletal organization mediated by EB1. FASEB J 2020; 34:3105-3128. [PMID: 31909540 DOI: 10.1096/fj.201901968rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/20/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022]
Abstract
During the epithelial cycle of spermatogenesis, different sets of cellular events take place across the seminiferous epithelium in the testis. For instance, remodeling of the blood-testis barrier (BTB) that facilitates the transport of preleptotene spermatocytes across the immunological barrier and the release of sperms at spermiation take place at the opposite ends of the epithelium simultaneously at stage VIII of the epithelial cycle. These cellular events are tightly coordinated via locally produced regulatory biomolecules. Studies have shown that collagen α3 (IV) chains, a major constituent component of the basement membrane, release the non-collagenous (NC) 1 domain, a 28-kDa peptide, designated NC1-peptide, from the C-terminal region, via the action of MMP-9 (matrix metalloproteinase 9). NC1-peptide was found to be capable of inducing BTB remodeling and spermatid release across the epithelium. As such, the NC1-peptide is an endogenously produced biologically active peptide which coordinates these cellular events across the epithelium in stage VIII tubules. Herein, we used an animal model, wherein NC1-peptide cloned into the pCI-neo mammalian expression vector was overexpressed in the testis, to better understanding the molecular mechanism by which NC1-peptide regulated spermatogenic function. It was shown that NC1-peptide induced considerable downregulation on a number of cell polarity and planar cell polarity (PCP) proteins, and studies have shown these polarity and PCP proteins modulate spermatid polarity and adhesion via their effects on microtubule (MT) and F-actin cytoskeletal organization across the epithelium. More important, NC1-peptide exerted its effects by downregulating the expression of microtubule (MT) plus-end tracking protein (+TIP) called EB1 (end-binding protein 1). We cloned the full-length EB1 cDNA for its overexpression in the testis, which was found to block the NC1-peptide-mediated disruptive effects on cytoskeletal organization in Sertoli cell epithelium and pertinent Sertoli cell functions. These findings thus illustrate that NC1-peptide is working in concert with EB1 to support spermatogenesis.
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Affiliation(s)
- Shiwen Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, New York, NY, USA
| | - Huitao Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, New York, NY, USA
| | - Siwen Wu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, New York, NY, USA
| | - Linxi Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, New York, NY, USA
| | - Renshan Ge
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - C Yan Cheng
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, New York, NY, USA
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Su W, Cheng CY. Cdc42 is involved in NC1 peptide-regulated BTB dynamics through actin and microtubule cytoskeletal reorganization. FASEB J 2019; 33:14461-14478. [PMID: 31682474 PMCID: PMC6894087 DOI: 10.1096/fj.201900991r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 09/23/2019] [Indexed: 12/13/2022]
Abstract
Noncollagenous domain 1 (NC1)-peptide is a biologically active peptide derived from the C-terminal region of collagen α3(IV) chain, a structural constituent protein at the basement membrane in the rat testis, likely via proteolytic cleavage of matrix metalloproteinase 9. Studies have shown that this NC1 peptide regulates testis function by inducing Sertoli cell blood-testis barrier (BTB) remodeling and is also capable of inducing elongate spermatid exfoliation through its disruptive effects on the organization of actin- and microtubule (MT)-based cytoskeletons at these cell adhesion sites. However, the underlying molecular mechanism remains unknown. NC1 peptide was found to exert its biologic effects through an activation of small GTPase cell division control protein 42 homolog (Cdc42) because cooverexpression of the dominant negative mutant of Cdc42 [namely, Cdc42-T17N (via a single mutation of amino acid residue 17 from the N terminus from Thr to Asn by site-directed mutagenesis, making it constitutively inactive)] and NC1 peptide was able to block the NC1 peptide-induced Sertoli cell tight junction-permeability barrier disruption. Their cooverexpression also blocked the NC1 peptide-induced misdistribution of BTB-associated proteins at the cell-cell interface and also disruptive cytoskeletal organization of F-actin and MTs through changes in spatial expression of the corresponding actin and MT regulatory proteins. Interestingly, NC1 peptide was also found to induce an up-regulation of phosphorylated (p)-ribosomal protein S6 (rpS6) (namely, p-rpS6-S235/S236) and a concomitant down-regulation of p-Akt1/2 (namely, p-Akt1-S473 and p-Akt2-S474), but these changes could not be blocked by overexpression of Cdc42-T17N. More importantly, NC1 peptide-induced Cdc42 activation was effectively blocked by treatment of Sertoli cell epithelium with a p-Akt1/2 activator SC79, which is also capable of blocking NC1 peptide-induced down-regulation of p-Akt1-S473 and p-Akt2/S474, but not p-rpS6-S235/S236 up-regulation. In summary, these findings illustrate that Cdc42 is working downstream of the mammalian target of rapamycin complex 1/rpS6/Akt1/2 signaling pathway to support NC1 peptide-mediated effects on Sertoli cell function in the testis using the rat as an animal model.-Su, W., Cheng, C. Y. Cdc42 is involved in NC1 peptide-regulated BTB dynamics through actin and microtubule cytoskeletal reorganization.
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Affiliation(s)
- Wenhui Su
- The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, Rockefeller University, New York, New York, USA
| | - C. Yan Cheng
- The Mary M. Wohlford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, Rockefeller University, New York, New York, USA
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