1
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Zhang H, Situ C, Guo X. Recent progress of proteomic analysis on spermatogenesis. Biol Reprod 2022; 107:109-117. [DOI: 10.1093/biolre/ioac065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/17/2022] [Accepted: 03/22/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
Testis, the only organ responsible for generating sperm, is by far the organ with the largest variety of proteins and tissue-specific proteins in humans. In testis, spermatogenesis is a multi-step complex process well-accepted that protein and mRNA are decoupled in certain stages of spermatogenesis. With the fast development of mass spectrometry-based proteomics, it is possible to systemically study protein abundances and modifications in testis and sperm to help us understand the molecular mechanisms of spermatogenesis. This review provides an overview of the recent progress of proteomics analysis on spermatogenesis, including protein expression and multiple PTMs, such as phosphorylation, glycosylation, ubiquitylation, and acetylation.
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Affiliation(s)
- Haotian Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 211166, China
| | - Chenghao Situ
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 211166, China
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 211166, China
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2
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Wang N, Zhang X, Li X, Liu C, Yang M, Han B, Hai C, Su G, Li G, Zhao Y. Cysteine is highly enriched in the canonical N-linked glycosylation motif of bovine spermatozoa N-Glycoproteome. Theriogenology 2022; 184:1-12. [DOI: 10.1016/j.theriogenology.2022.02.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 12/15/2022]
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3
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O'Donnell L, Rebourcet D, Dagley LF, Sgaier R, Infusini G, O'Shaughnessy PJ, Chalmel F, Fietz D, Weidner W, Legrand JMD, Hobbs RM, McLachlan RI, Webb AI, Pilatz A, Diemer T, Smith LB, Stanton PG. Sperm proteins and cancer-testis antigens are released by the seminiferous tubules in mice and men. FASEB J 2021; 35:e21397. [PMID: 33565176 PMCID: PMC7898903 DOI: 10.1096/fj.202002484r] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/21/2020] [Accepted: 01/11/2021] [Indexed: 02/06/2023]
Abstract
Sperm develop from puberty in the seminiferous tubules, inside the blood-testis barrier to prevent their recognition as "non-self" by the immune system, and it is widely assumed that human sperm-specific proteins cannot access the circulatory or immune systems. Sperm-specific proteins aberrantly expressed in cancer, known as cancer-testis antigens (CTAs), are often pursued as cancer biomarkers and therapeutic targets based on the assumption they are neoantigens absent from the circulation in healthy men. Here, we identify a wide range of germ cell-derived and sperm-specific proteins, including multiple CTAs, that are selectively deposited by the Sertoli cells of the adult mouse and human seminiferous tubules into testicular interstitial fluid (TIF) that is "outside" the blood-testis barrier. From TIF, the proteins can access the circulatory- and immune systems. Disruption of spermatogenesis decreases the abundance of these proteins in mouse TIF, and a sperm-specific CTA is significantly decreased in TIF from infertile men, suggesting that exposure of certain CTAs to the immune system could depend on fertility status. The results provide a rationale for the development of blood-based tests useful in the management of male infertility and indicate CTA candidates for cancer immunotherapy and biomarker development that could show sex-specific and male-fertility-related responses.
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Affiliation(s)
- Liza O'Donnell
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia.,Faculty of Science, The University of Newcastle, Callaghan, NSW, Australia
| | - Diane Rebourcet
- Faculty of Science, The University of Newcastle, Callaghan, NSW, Australia
| | - Laura F Dagley
- Walter and Eliza Hall Institute, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Raouda Sgaier
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia.,Department of Urology, Pediatric Urology and Andrology, Medical Faculty, Justus-Liebig-University Giessen, UKGM GmbH, Giessen, Germany
| | - Giuseppe Infusini
- Walter and Eliza Hall Institute, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Peter J O'Shaughnessy
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, Rennes, France
| | - Frederic Chalmel
- Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR_S 1085, University Rennes, Rennes, France
| | - Daniela Fietz
- Institute for Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Wolfgang Weidner
- Department of Urology, Pediatric Urology and Andrology, Medical Faculty, Justus-Liebig-University Giessen, UKGM GmbH, Giessen, Germany
| | - Julien M D Legrand
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Robin M Hobbs
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Robert I McLachlan
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Andrew I Webb
- Walter and Eliza Hall Institute, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Adrian Pilatz
- Department of Urology, Pediatric Urology and Andrology, Medical Faculty, Justus-Liebig-University Giessen, UKGM GmbH, Giessen, Germany
| | - Thorsten Diemer
- Department of Urology, Pediatric Urology and Andrology, Medical Faculty, Justus-Liebig-University Giessen, UKGM GmbH, Giessen, Germany
| | - Lee B Smith
- Faculty of Science, The University of Newcastle, Callaghan, NSW, Australia.,MRC Centre for Reproductive Health, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Peter G Stanton
- Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
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4
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Cui Q, Tang J, Zhang D, Kong D, Liao X, Ren J, Gong Y, Xie C, Wu G. A prognostic eight-gene expression signature for patients with breast cancer receiving adjuvant chemotherapy. J Cell Biochem 2020; 121:3923-3934. [PMID: 31692061 DOI: 10.1002/jcb.29550] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 10/10/2019] [Indexed: 01/24/2023]
Abstract
Breast cancer is a popularly diagnosed malignant tumor. Genomic profiling studies suggest that breast cancer is a disease with heterogeneity. Chemotherapy is one of the chief means to treat breast cancer, while its responses and clinical outcomes vary largely due to the conventional clinicopathological factors and inherent chemosensitivity of breast cancer. Using the least absolute shrinkage and selection operator (LASSO) Cox regression model, our study established a multi-mRNA-based signature model and constructed a relative nomogram in predicting distant-recurrence-free survival for patients receiving surgery and following chemotherapy. We constructed a signature of eight mRNAs (IPCEF1, SYNDIG1, TIGIT, SPESP1, C2CD4A, CLCA2, RLN2, and CCL19) with the LASSO model, which was employed to separate subjects into groups with high- and low-risk scores. Obvious differences of distant-recurrence-free survival were found between these two groups. This eight-mRNA-based signature was independently associated with the prognosis and had better prognostic value than classical clinicopathologic factors according to multivariate Cox regression results. Receiver operating characteristic results demonstrated excellent performance in diagnosing 3-year distant-recurrence by the eight-mRNA signature. A nomogram that combined both the eight-mRNA-based signature and clinicopathological risk factors was constructed. Comparing with an ideal model, the nomograms worked well both in the training and validation sets. Through the results that the eight-mRNA signature effectively classified patients into low- and high-risk of distant recurrence, we concluded that this eight-mRNA-based signature played a promising predictive role in prognosis and could be clinically applied in breast cancer patients receiving adjuvant chemotherapy.
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Affiliation(s)
- Qiuxia Cui
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jianing Tang
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Dan Zhang
- Department of Thyroid and Breast Surgery, Tongji Hospital of Huazhong University of Science and Technology, Wuhan, China
| | - Deguang Kong
- Department of General Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xing Liao
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jiangbo Ren
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yan Gong
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Conghua Xie
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Gaosong Wu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
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5
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Khawar MB, Gao H, Li W. Mechanism of Acrosome Biogenesis in Mammals. Front Cell Dev Biol 2019; 7:195. [PMID: 31620437 PMCID: PMC6759486 DOI: 10.3389/fcell.2019.00195] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/29/2019] [Indexed: 11/13/2022] Open
Abstract
During sexual reproduction, two haploid gametes fuse to form the zygote, and the acrosome is essential to this fusion process (fertilization) in animals. The acrosome is a special kind of organelle with a cap-like structure that covers the anterior portion of the head of the spermatozoon. The acrosome is derived from the Golgi apparatus and contains digestive enzymes. With the progress of our understanding of acrosome biogenesis, a number of models have been proposed to address the origin of the acrosome. The acrosome has been regarded as a lysosome-related organelle, and it has been proposed to have originated from the lysosome or the autolysosome. Our review will provide a brief historical overview and highlight recent findings on acrosome biogenesis in mammals.
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Affiliation(s)
- Muhammad Babar Khawar
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hui Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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6
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The proteome of frozen-thawed pig spermatozoa is dependent on the ejaculate fraction source. Sci Rep 2019; 9:705. [PMID: 30679492 PMCID: PMC6345957 DOI: 10.1038/s41598-018-36624-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/20/2018] [Indexed: 12/13/2022] Open
Abstract
The preservation of sperm functional parameters and fertility post-cryopreservation largely varies in the porcine, a species with a fractionated ejaculate. Although intrinsic individual differences have primarily been linked to this variation, differences in protein abundance among frozen-thawed (FT)-spermatozoa are far more relevant. This study, performed in two experiments, looked for proteomic quantitative differences between FT-sperm samples differing in post-thaw viability, motility, apoptosis, membrane lipid peroxidation and nuclear DNA fragmentation. The spermatozoa were either derived from the sperm-rich ejaculate fraction (SRF) or the entire ejaculate (Experiment 1) or from the first 10 mL of the SRF, the remaining SRF and the post-SRF (Experiment 2). Quantitative sperm proteomic differences were analysed using a LC-ESI-MS/MS-based SWATH approach. In Experiment 1, FT-spermatozoa from the SRF showed better preservation parameters than those from the entire ejaculate, with 26 Sus scrofa proteins with functional sperm relevance showing relative quantitative differences (FC ≥ 1.5) between sperm sources. In Experiment 2, FT-spermatozoa from the first 10 mL of the SRF and the remaining SRF were qualitatively better than those from the post-SRF, and 187 proteins showed relative quantitative differences among the three ejaculate sources. The results indicate that quantitative proteome differences are linked to sperm cryosurvival.
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7
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Zhang P, Jiang W, Luo N, Zhu W, Fan L. IQ motif containing D (IQCD), a new acrosomal protein involved in the acrosome reaction and fertilisation. Reprod Fertil Dev 2019; 31:898-914. [DOI: 10.1071/rd18416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 12/07/2018] [Indexed: 11/23/2022] Open
Abstract
The acrosome is single, large, dense-core secretory granule overlying the nucleus of most mammalian spermatozoa. Its exocytosis, the acrosome reaction, is a crucial event during fertilisation. In this study we identified a new acrosome-associated gene, namely IQ motif containing D (IQCD), expressed nearly in multiple tissues with highest expression levels in the testis. In mouse testis, Iqcd transcript accumulated from Postnatal Day (PND) 1 to adulthood. However, expression of IQCD protein at the testicular development stage started primarily from PND 18 and increased in an age-dependent manner until plateauing in adulthood. IQCD was primarily accumulated in the acrosome area of round and elongating spermatids within seminiferous tubules of the testes during the late stage of spermiogenesis; this immunolocalisation pattern is similar in mice and humans. IQCD levels in spermatozoa were significantly lower in IVF patients with total fertilisation failure or a low fertilisation rate than in healthy men. Anti-IQCD antibody significantly inhibited the acrosome reaction and slightly reduced protein tyrosine phosphorylation levels in human spermatozoa, but specifically blocked murine IVF. IQCD interacted with mammalian homolog of C. elegans uncoordinated gene 13 (Munc13) in spermatozoa and may participate in acrosome exocytosis. In conclusion, this study identified a new acrosomal protein, namely IQCD, which is involved in fertilisation and the acrosome reaction.
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8
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Movsas TZ, Sigler R, Muthusamy A. Elimination of Signaling by the Luteinizing Hormone Receptor Reduces Ocular VEGF and Retinal Vascularization during Mouse Eye Development. Curr Eye Res 2018; 43:1286-1289. [PMID: 29966451 PMCID: PMC6262229 DOI: 10.1080/02713683.2018.1495740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/22/2022]
Abstract
Purpose/Aim: Vascular endothelial growth factor (VEGF) dysregulation is implicated in the pathogenesis of retinopathy of prematurity (ROP). Identifying the factors that contribute to VEGF regulation during normal retinal vascularization is the key to ROP prevention. Currently, physiologic hypoxia is thought to be responsible for retinal VEGF regulation in utero. However, a potential hormonal contribution to VEGF regulation during eye development has not been fully investigated. The placental hormone, human chorionic gonadotropin and the pituitary hormone, and luteinizing hormone (LH) induce VEGF expression in several tissue types. Both of these gonadotropins activate the same LH receptor (LHR) in the human body; LHRs are expressed in the retina. In this study, we aimed to show that LHR signaling participates in VEGF regulation in the developing eye. METHODS When offspring from breeding pairs of LHR knockout mice (lhrkos) reached 21 days old, eyes and serum were extracted from homozygote lhrkos and wildtype (WT) siblings. VEGF levels were measured using Mouse VEGF Quantikine immunoassay kit. Retinas were incubated with isolectin for endothelial cell staining, flat mounted and imaged by confocal microscopy. Retinal vascular density was quantified using Imaris software. Some eyes were sectioned and stained for histopathologic review. RESULTS Ocular VEGF and retinal vascular volumes were significantly reduced by ~ 15% in lhrko eyes. Serum VEGF was not changed. The lhrko retinas did not display any anomalies. CONCLUSIONS We provide evidence that LHR signaling plays a role in VEGF regulation and vascularization in the developing eye. Given that human preterm infants may have altered LHR-activity, the effect of gonadotropins on eye development should be further studied to identify novel strategies for ROP prevention.
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Affiliation(s)
- Tammy Z Movsas
- Zietchick Research Institute (ZRI), 46701 Commerce Center Drive, Plymouth, MI
- College of Human Medicine, Michigan State University, 965 Fee Road, East Lansing, MI
| | - Robert Sigler
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, 2800 Plymouth Road, Ann Arbor, Michigan
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9
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Zhang L, Ren J, Shi P, Lu D, Zhao C, Su Y, Zhang L, Huang J. The Immunological Regulation Roles of Porcine β-1, 4 Galactosyltransferase V (B4GALT5) in PRRSV Infection. Front Cell Infect Microbiol 2018; 8:48. [PMID: 29546034 PMCID: PMC5837993 DOI: 10.3389/fcimb.2018.00048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 02/09/2018] [Indexed: 11/13/2022] Open
Abstract
B4GALT5, also known as β-1, 4 galactosyltransferase V, is one of the members of β-1, 4 galactosyltransferase gene (B4GALT) family, which was concerned with embryonic development, tumor generation, other malignant diseases. In this study, we firstly cloned porcine B4GALT (pB4GALT5) from porcine alveolar macrophages, and predicted the structural domain and function of seven porcine β-1, 4 galactosyltransferase (I–VII) based on transcriptome analysis of PRRSV infected cells. Additionally, the upregulated porcine B4GALT5 expression was detected from PRRSV infected porcine alveolar macrophage (PAM) cells. The PRRSV proliferation were slightly inhibited in overexpression of pB4GALT5 transfected cells, the interaction of B4GALT5 and GP5 of PRRSV was firstly be detected by Co-IP, and the co-location between B4GALT5 and GP5 were also observed in golgi membranes by confocal microscopy. A significant increasing mRNA transcription, including inflammatory cytokines (IFN-α, IL-6, IL-18, IL-1β, TNF-α) and some cell surface glycosylated protein involved in antigen present (MHC-I/II), cell adhesion and migration (chemokine MCP-1 and receptor CCR2; LFA-1, ICAM-1) were upregulated in B4GALT5 overexpressed PRRSV infected cells. Our results demonstrated that the regulation of pB4GALT5 plays an important roles in PRRSV proliferation and modification function in viral infection cells. And these results will make achievements by supporting the research of latent mechanisms of β-1, 4 galactosyltransferase V in antiviral immunity.
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Affiliation(s)
- Lei Zhang
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Jie Ren
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Peidian Shi
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Dong Lu
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Chengxue Zhao
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Yanxin Su
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Lilin Zhang
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, Tianjin, China
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10
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The control of male fertility by spermatid-specific factors: searching for contraceptive targets from spermatozoon's head to tail. Cell Death Dis 2016; 7:e2472. [PMID: 27831554 PMCID: PMC5260884 DOI: 10.1038/cddis.2016.344] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 09/18/2016] [Accepted: 09/26/2016] [Indexed: 02/06/2023]
Abstract
Male infertility due to abnormal spermatozoa has been reported in both animals and humans, but its pathogenic causes, including genetic abnormalities, remain largely unknown. On the other hand, contraceptive options for men are limited, and a specific, reversible and safe method of male contraception has been a long-standing quest in medicine. Some progress has recently been made in exploring the effects of spermatid-specifical genetic factors in controlling male fertility. A comprehensive search of PubMed for articles and reviews published in English before July 2016 was carried out using the search terms 'spermiogenesis failure', 'globozoospermia', 'spermatid-specific', 'acrosome', 'infertile', 'manchette', 'sperm connecting piece', 'sperm annulus', 'sperm ADAMs', 'flagellar abnormalities', 'sperm motility loss', 'sperm ion exchanger' and 'contraceptive targets'. Importantly, we have opted to focus on articles regarding spermatid-specific factors. Genetic studies to define the structure and physiology of sperm have shown that spermatozoa appear to be one of the most promising contraceptive targets. Here we summarize how these spermatid-specific factors regulate spermiogenesis and categorize them according to their localization and function from spermatid head to tail (e.g., acrosome, manchette, head-tail conjunction, annulus, principal piece of tail). In addition, we emphatically introduce small-molecule contraceptives, such as BRDT and PPP3CC/PPP3R2, which are currently being developed to target spermatogenic-specific proteins. We suggest that blocking the differentiation of haploid germ cells, which rarely affects early spermatogenic cell types and the testicular microenvironment, is a better choice than spermatogenic-specific proteins. The studies described here provide valuable information regarding the genetic and molecular defects causing male mouse infertility to improve our understanding of the importance of spermatid-specific factors in controlling fertility. Although a male contraceptive 'pill' is still many years away, research into the production of new small-molecule contraceptives targeting spermatid-specific proteins is the right avenue.
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11
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Berruti G. Towards defining an ‘origin’—The case for the mammalian acrosome. Semin Cell Dev Biol 2016; 59:46-53. [DOI: 10.1016/j.semcdb.2016.01.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 01/19/2023]
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12
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Nakata H, Wakayama T, Asano T, Nishiuchi T, Iseki S. Identification of sperm equatorial segment protein 1 in the acrosome as the primary binding target of peanut agglutinin (PNA) in the mouse testis. Histochem Cell Biol 2016; 147:27-38. [PMID: 27539077 DOI: 10.1007/s00418-016-1478-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2016] [Indexed: 12/01/2022]
Abstract
Peanut agglutinin (PNA), a plant lectin protein that recognizes the galactose β (1 -> 3) N-acetylgalactosamine carbohydrate sequence, has been widely used as a sperm acrosome-specific marker; however, the acrosomal glycoproteins that specifically bind to PNA have yet to be identified. We herein purified and identified PNA-binding glycoproteins in the mouse testis using biotinylated PNA and streptavidin-coupled magnetic beads, and liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. In six repeated experiments, sperm equatorial segment protein 1 (SPESP1) was detected most frequently as a PNA-binding glycoprotein, followed by dipeptidase 3, proacrosin-binding protein, and acrosin prepropeptide. The identification of SPEPS1 in the testis lysate and its PNA-bound fraction was verified with lectin and Western blot analyses, and the co-localization of PNA and SPEPS1 in acrosomes was confirmed with lectin- and immunohistochemistry. Since the PNA reactivity of sperm acrosomes was observed not only in normal mice, but also in SPESP1-deficient mice, although at lower levels, PNA was also considered to bind to other candidate glycoproteins. The present study identified SPESP1 in the acrosome as the primary binding target of PNA in the mouse testis. Further defining the specific lectin-glycoprotein relationships in individual cells will enhance the value of lectin histochemistry.
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Affiliation(s)
- Hiroki Nakata
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, 920-8640, Japan
| | - Tomohiko Wakayama
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, 920-8640, Japan.,Department of Histology, Faculty of Life Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Tomoya Asano
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, 920-8640, Japan
| | - Takumi Nishiuchi
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, 920-8640, Japan
| | - Shoichi Iseki
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, 920-8640, Japan.
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13
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Saraswat M, Joenväärä S, Tomar AK, Singh S, Yadav S, Renkonen R. N-Glycoproteomics of Human Seminal Plasma Glycoproteins. J Proteome Res 2016; 15:991-1001. [PMID: 26791533 DOI: 10.1021/acs.jproteome.5b01069] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Seminal plasma aids sperm by inhibiting premature capacitation, helping in the intracervical transport and formation of an oviductal sperm reservoir, all of which appear to be important in the fertilization process. Epitopes such as Lewis x and y are known to be present on seminal plasma glycoproteins, which can modulate the maternal immune response. It is suggested by multiple studies that seminal plasma glycoproteins play, largely undiscovered, important roles in the process of fertilization. We have devised a strategy to analyze glycopeptides from a complex, unknown mixture of protease-digested proteins. This analysis provides identification of the glycoproteins, glycosylation sites, glycan compositions, and proposed structures from the original sample. This strategy has been applied to human seminal plasma total glycoproteins. We have elucidated glycan compositions and proposed structures for 243 glycopeptides belonging to 73 N-glycosylation sites on 50 glycoproteins. The majority of the proposed glycan structures were complex type (83%) followed by high-mannose (10%) and then hybrid (7%). Most of the glycoproteins were either sialylated, fucosylated, or both. Many Lewis x/a and y/b epitopes bearing glycans were found, suggesting immune-modulating epitopes on multiple seminal plasma glycoproteins. The study also shows that large scale N-glycosylation mapping is achievable with current techniques and the depth of the analysis is roughly proportional to the prefractionation and complexity of the sample.
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Affiliation(s)
- Mayank Saraswat
- Transplantation Laboratory, Haartman Institute, University of Helsinki , Haartmaninkatu 3, P.O. Box 21, Helsinki FI-00014, Finland
- HUSLAB, Helsinki University Hospital, 00290 Helsinki, Finland
| | - Sakari Joenväärä
- Transplantation Laboratory, Haartman Institute, University of Helsinki , Haartmaninkatu 3, P.O. Box 21, Helsinki FI-00014, Finland
- HUSLAB, Helsinki University Hospital, 00290 Helsinki, Finland
| | - Anil Kumar Tomar
- Department of Biophysics, All India Institute of Medical Sciences , New Delhi 110029, India
| | - Sarman Singh
- Division of Clinical Microbiology & Molecular Medicine, Department of Laboratory Medicine, All India Institute of Medical Sciences , New Delhi 110029, India
| | - Savita Yadav
- Department of Biophysics, All India Institute of Medical Sciences , New Delhi 110029, India
| | - Risto Renkonen
- Transplantation Laboratory, Haartman Institute, University of Helsinki , Haartmaninkatu 3, P.O. Box 21, Helsinki FI-00014, Finland
- HUSLAB, Helsinki University Hospital, 00290 Helsinki, Finland
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Ito C, Toshimori K. Acrosome markers of human sperm. Anat Sci Int 2016; 91:128-42. [PMID: 26748928 DOI: 10.1007/s12565-015-0323-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 12/08/2015] [Indexed: 01/03/2023]
Abstract
Molecular biomarkers that can assess sperm acrosome status are very useful for evaluating sperm quality in the field of assisted reproductive technology. In this review, we introduce and discuss the localization and function of acrosomal proteins that have been well studied. Journal databases were searched using keywords, including "human acrosome", "localization", "fertilization-related protein", "acrosomal membrane", "acrosomal matrix", "acrosome reaction", "knockout mouse", and "acrosome marker".
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Affiliation(s)
- Chizuru Ito
- Department of Reproductive Biology and Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan.
| | - Kiyotaka Toshimori
- Department of Reproductive Biology and Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
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Affiliation(s)
- Min Liu
- Department of Life Science and Graduate Institute of Biotechnology, Chinese Culture University, Taipei, Republic of China
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