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Aldahhan RA, Stanton PG. Heat stress response of somatic cells in the testis. Mol Cell Endocrinol 2021; 527:111216. [PMID: 33639219 DOI: 10.1016/j.mce.2021.111216] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 11/30/2020] [Accepted: 02/15/2021] [Indexed: 02/06/2023]
Abstract
The testis is a temperature-sensitive organ that needs to be maintained 2-7 °C below core body temperature to ensure the production of normal sperm. Failure to maintain testicular temperature in mammals impairs spermatogenesis and leads to low sperm counts, poor sperm motility and abnormal sperm morphology in the ejaculate. This review discusses the recent knowledge on the response of testicular somatic cells to heat stress and, specifically, regarding the relevant contributions of heat, germ cell depletion and inflammatory reactions on the functions of Sertoli and Leydig cells. It also outlines mechanisms of testicular thermoregulation, as well as the thermogenic factors that impact testicular function.
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Affiliation(s)
- Rashid A Aldahhan
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, P.O. Box 2114, Dammam, 31541, Saudi Arabia.
| | - Peter G Stanton
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia; Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
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2
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Ribeiro JC, Alves MG, Amado F, Ferreira R, Oliveira P. Insights and clinical potential of proteomics in understanding spermatogenesis. Expert Rev Proteomics 2021; 18:13-25. [PMID: 33567922 DOI: 10.1080/14789450.2021.1889373] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Introduction: With the worldwide decline on male fertility potential, the importance of the insight of the spermatogenic process has been increasing. In recent years, proteomic methodologies have been applied to seminal fluid of infertile men to search for infertility potential biomarkers. However, to understand the spermatogenic event and to search for treatment to spermatogenic impairment, comparative analysis of testicular proteomics is considered a powerful methodology.Areas covered: Herein, we present a critical overview of the studies addressing proteomic alterations in the development of spermatogenesis during puberty, as well as during the different phases of the spermatogenic event. The comparative studies of the proteomic testicular profile of men with and without spermatogenic impairment are also discussed and key proteins and pathways involved highlighted.Expert opinion: The usage of whole human testicular tissue with its heterogeneous cellular composition makes proteome data interpretation particularly challenging. This may be minimized by controlled experiments involving the collection of testicular tissue and sperm from the same individuals, integrated in a clinically characterized cohort of healthy and infertile men. The analysis of specific subcellular proteomes can add more information to the proteomic puzzle, opening new treatment possibilities for infertile/subfertile men.
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Affiliation(s)
- João C Ribeiro
- Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.,QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - 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
| | - Francisco Amado
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Rita Ferreira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Pedro Oliveira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
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3
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Boccaletto P, Siddique MAM, Cosson J. Proteomics: A valuable approach to elucidate spermatozoa post –testicular maturation in the endangered Acipenseridae family. Anim Reprod Sci 2018; 192:18-27. [DOI: 10.1016/j.anireprosci.2018.03.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 03/08/2018] [Accepted: 03/28/2018] [Indexed: 10/17/2022]
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4
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Huang YL, Fu Q, Pan H, Chen FM, Zhao XL, Wang HJ, Zhang PF, Huang FL, Lu YQ, Zhang M. Spermatogenesis-associated proteins at different developmental stages of buffalo testicular seminiferous tubules identified by comparative proteomic analysis. Proteomics 2016; 16:2005-18. [PMID: 27173832 DOI: 10.1002/pmic.201500547] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 04/20/2016] [Accepted: 05/09/2016] [Indexed: 12/26/2022]
Abstract
The testicular seminiferous tubules contain Sertoli cells and different types of spermatogenic cells. They provide the microenvironment for spermatogenesis, but the precise molecular mechanism of spermatogenesis is still not well known. Here, we have employed tandem mass tag coupled to LC-MS/MS with the high-throughput quantitative proteomics technology to explore the protein expression from buffalo testicular seminiferous tubules at three different developmental stages (prepuberty, puberty, and postpuberty). The results show 304 differentially expressed proteins with a ≥2-fold change, and bioinformatics analysis indicates that 27 of these may be associated with spermatogenesis. Expression patterns of seven selected proteins were verified via Western blot and quantitative RT-PCR analysis, and further cellular localizations of these proteins by immunohistochemical or immunofluorescence analysis. Taken together, the results provide potential molecular markers of spermatogenesis and provide a rich resource for further studies on male reproduction regulation.
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Affiliation(s)
- Yu-Lin Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Qiang Fu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Hong Pan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Fu-Mei Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Xiu-Ling Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Huan-Jing Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Peng-Fei Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Feng-Ling Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Yang-Qing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
| | - Ming Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, P. R. China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Nanning, Guangxi, P. R. China
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5
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Korean red ginseng protects against doxorubicin-induced testicular damage: An experimental study in rats. J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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6
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Vilagran I, Yeste M, Sancho S, Castillo J, Oliva R, Bonet S. Comparative analysis of boar seminal plasma proteome from different freezability ejaculates and identification of Fibronectin 1 as sperm freezability marker. Andrology 2015; 3:345-56. [PMID: 25678437 DOI: 10.1111/andr.12009] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/14/2014] [Accepted: 12/17/2014] [Indexed: 01/17/2023]
Abstract
Variation in boar sperm freezability (i.e. capacity to withstand cryopreservation) between ejaculates is a limitation largely reported in the literature. Prediction of sperm freezability and classification of boar ejaculates into good (GFEs) and poor freezability ejaculates (PFEs) before cryopreservation takes place may increase the use of frozen-thawed spermatozoa. While markers of boar sperm freezability have been found from sperm cell extracts, little attention has been paid to seminal plasma. On this basis, the present study compared the fresh seminal plasma proteome of 9 GFEs and 9 PFEs through two-dimensional difference gel electrophoresis (2D-DIGE) and liquid chromatography mass spectrometry (LC-MS/MS). The ejaculates were previously classified as GFE or PFE upon their sperm viability and progressive motility assessments at 30 and 240 min post thawing. From a total of 51 spots, four were found to significantly (p < 0.05) differ between GFEs and PFEs, and two were identified as fibronectin-1 (FN1) and glutathione peroxidase 5 (GPX5). These two potential markers were further studied by western blot and correlation analysis between protein relative abundances in fresh seminal plasma and regression factors from principal component analyses (PCA) run using post-thawing sperm quality parameters. Results confirmed that FN1 is a reliable marker of boar sperm freezability, because GFEs presented significantly (p < 0.05) higher FN1-amounts than PFEs and FN1 was found to be correlated with the first PCA component at 240 min post thawing. In contrast, GPX5 was not validated as a boar sperm freezability marker. We can thus conclude that levels of FN1 in fresh seminal plasma from boar semen may be used as a sperm freezability marker, thereby facilitating the use of frozen-thawed boar spermatozoa.
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Affiliation(s)
- I Vilagran
- Department of Biology, Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, Girona, Spain
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7
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Holland A, Ohlendieck K. Comparative profiling of the sperm proteome. Proteomics 2014; 15:632-48. [DOI: 10.1002/pmic.201400032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 02/27/2014] [Accepted: 06/02/2014] [Indexed: 01/28/2023]
Affiliation(s)
- Ashling Holland
- Department of Biology; National University of Ireland; Maynooth County Kildare Ireland
| | - Kay Ohlendieck
- Department of Biology; National University of Ireland; Maynooth County Kildare Ireland
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8
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Zhang H, Lu Y, Luo B, Yan S, Guo X, Dai J. Proteomic analysis of mouse testis reveals perfluorooctanoic acid-induced reproductive dysfunction via direct disturbance of testicular steroidogenic machinery. J Proteome Res 2014; 13:3370-85. [PMID: 24940614 DOI: 10.1021/pr500228d] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Perfluorooctanoic acid (PFOA) is a ubiquitous environmental pollutant suspected of being an endocrine disruptor; however, mechanisms of male reproductive disorders induced by PFOA are poorly understood. In this study, male mice were exposed to 0, 0.31, 1.25, 5, and 20 mg PFOA/kg/day by oral gavage for 28 days. PFOA significantly damaged the seminiferous tubules and reduced testosterone and progesterone levels in the testis in a dose-dependent manner. Furthermore, PFOA exposure reduced sperm quality. We identified 93 differentially expressed proteins between the control and the 5 mg/kg/d PFOA treated mice using a quantitative proteomic approach. Among them, insulin like-factor 3 (INSL3) and cytochrome P450 cholesterol side-chain cleavage enzyme (CYP11A1) as Leydig-cell-specific markers were significantly decreased. We examined in detail the expression patterns of CYP11A1 and associated genes involved in steroidogenesis in the mouse testis. PFOA inhibited the mRNA and protein levels of CYP11A1 and the mRNA levels of 17β-hydroxysteroid dehydrogenase (17β-HSD) in a dose-dependent manner. Moreover, in vitro study showed the reduction in progesterone levels was accompanied by decreased expression of CYP11A1 in cAMP-stimulated mLTC-1 cells. Our findings indicate that PFOA exposure can impair male reproductive function, possibly by disturbing testosterone levels, and CPY11A1 may be a major steroidogenic enzyme targeted by PFOA.
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Affiliation(s)
- Hongxia Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing, 100101, P.R. China
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9
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Won YJ, Kim BK, Shin YK, Jung SH, Yoo SK, Hwang SY, Sung JH, Kim SK. Pectinase-treated Panax ginseng extract (GINST) rescues testicular dysfunction in aged rats via redox-modulating proteins. Exp Gerontol 2014; 53:57-66. [DOI: 10.1016/j.exger.2014.02.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 02/12/2014] [Accepted: 02/20/2014] [Indexed: 12/20/2022]
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10
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Com E, Melaine N, Chalmel F, Pineau C. Proteomics and integrative genomics for unraveling the mysteries of spermatogenesis: the strategies of a team. J Proteomics 2014; 107:128-43. [PMID: 24751586 DOI: 10.1016/j.jprot.2014.04.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 04/09/2014] [Indexed: 11/25/2022]
Abstract
UNLABELLED The strikingly complex structural organization of the mammalian testis in vivo creates particular difficulties for studies of its organization, function and regulation. These difficulties are particularly pronounced for investigations of the molecular communication networks within the seminiferous tubules that govern spermatogenesis. The use of classical molecular and cell biology approaches to unravel this complexity has proved problematic, due to difficulties in maintaining differentiated germ cells in vitro, in particular. The lack of a suitable testing ground has led to a greater reliance on high-quality proteomic and genomic analyses as a prelude to the in vitro antx1d in vivo testing of hypotheses. In this study, we highlight the options currently available for research, as used in our laboratory, in which proteomic and integrative genomic strategies are applied to the study of spermatogenesis in mammals. We will comment on results providing insight into the molecular mechanisms underlying normal and pathological spermatogenesis and new perspectives for the treatment of male infertility in humans. Finally, we will discuss the relevance of our strategies and the unexpected potential and perspectives they offer to teams involved in the study of male reproduction, within the framework of the Human Proteome Project. SIGNIFICANCE Integrative genomics is becoming a powerful strategy for discovering the biological significance hidden in proteomic datasets. This work introduces some of the integrative genomic concepts and works used by our team to gain new insight into mammalian spermatogenesis, a remarkably sophisticated process. We demonstrate the relevance of these integrative approaches to understand the cellular cross talks established between the somatic Sertoli cells and the germ cell lineage, within the seminiferous epithelium. Our work also contributes to new knowledge on the pathophysiology of testicular function, with promising clinical applications. This article is part of a Special Issue entitled: 20years of Proteomics in memory of Viatliano Pallini. Guest Editors: Luca Bini, Juan J. Calvete, Natacha Turck, Denis Hochstrasser and Jean-Charles Sanchez.
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Affiliation(s)
- Emmanuelle Com
- IRSET, Inserm U1085, Campus de Beaulieu, Rennes F-35042, France; Proteomics Core Facility Biogenouest, Campus de Beaulieu, Rennes F-35042, France
| | - Nathalie Melaine
- IRSET, Inserm U1085, Campus de Beaulieu, Rennes F-35042, France; Proteomics Core Facility Biogenouest, Campus de Beaulieu, Rennes F-35042, France
| | | | - Charles Pineau
- IRSET, Inserm U1085, Campus de Beaulieu, Rennes F-35042, France; Proteomics Core Facility Biogenouest, Campus de Beaulieu, Rennes F-35042, France.
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Genomic and post-genomic leads toward regulation of spermatogenesis. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2013; 113:409-22. [DOI: 10.1016/j.pbiomolbio.2013.01.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 01/08/2013] [Indexed: 01/15/2023]
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12
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Li S, Dong JY, Guo CG, Wu YX, Zhang W, Fan LY, Cao CX, Zhang WB. A stable and high-resolution isoelectric focusing capillary array device for micropreparative separation of proteins. Talanta 2013; 116:259-65. [DOI: 10.1016/j.talanta.2013.05.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 05/16/2013] [Accepted: 05/19/2013] [Indexed: 12/13/2022]
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13
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MacLeod G, Varmuza S. The application of proteomic approaches to the study of mammalian spermatogenesis and sperm function. FEBS J 2013; 280:5635-51. [DOI: 10.1111/febs.12461] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 07/04/2013] [Accepted: 07/26/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Graham MacLeod
- Department of Cell & Systems Biology; University of Toronto; ON Canada
| | - Susannah Varmuza
- Department of Cell & Systems Biology; University of Toronto; ON Canada
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Vilagran I, Castillo J, Bonet S, Sancho S, Yeste M, Estanyol JM, Oliva R. Acrosin-binding protein (ACRBP) and triosephosphate isomerase (TPI) are good markers to predict boar sperm freezing capacity. Theriogenology 2013; 80:443-50. [DOI: 10.1016/j.theriogenology.2013.05.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/26/2013] [Accepted: 05/04/2013] [Indexed: 12/30/2022]
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15
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Soares TS, Fernandes SAF, Lima ML, Stumpp T, Schoorlemmer GH, Lazari MFM, Porto CS. Experimental varicocoele in rats affects mechanisms that control expression and function of the androgen receptor. Andrology 2013; 1:670-81. [PMID: 23836701 DOI: 10.1111/j.2047-2927.2013.00103.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 05/08/2013] [Accepted: 05/15/2013] [Indexed: 01/24/2023]
Abstract
Varicocoele is an important cause of male infertility. Normal male reproductive function and fertility depends on a delicate balance between androgen receptor (AR) and the classic oestrogen receptors ESR1 (ERα) and ESR2 (ERβ). Using a model of surgically induced varicocoele in rats, this study aimed to investigate the effects of varicocoele on the expression of AR, ESR1, ESR2 and G-protein coupled oestrogen receptor (GPER). Varicocoele did not affect the mRNA and protein expression of ESR1 and ESR2 in both testes. Varicocoele did not affect the mRNA and protein expression of GPER in the right testis, but slightly reduced the mRNA and increased the protein levels in the left testis. Varicocoele did not affect the mRNA for AR, but reduced the protein levels in both testes. A proteomic approach was used in an attempt to find differentially expressed targets with possible correlation with AR downregulation. Varicocoele caused the differential expression of 29 proteins. Six proteins were upregulated, including the receptor for activated C kinase 1 (RACK1), and 23 were downregulated, including dihydrolipoamide dehydrogenase, alpha-enolase and pyrophosphatase 1. Western blot analysis confirmed that varicocoele upregulated the expression of RACK1, a protein involved with tyrosine phosphorylation and regulation of AR transcriptional activity, AR metabolism and dynamics of the blood-testis barrier. In conclusion, this study suggests that varicocoele affects mechanisms that control AR expression and function. This regulation of AR may play an important role in the varicocoele-induced testicular dysfunction. Furthermore, varicocoele downregulates several other proteins in the testis that may be useful markers of spermatozoa function and male infertility.
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Affiliation(s)
- T S Soares
- Section of Experimental Endocrinology, Department of Pharmacology, São Paulo, Brazil
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Guo CG, Li S, Wang HY, Zhang D, Li GQ, Zhang J, Fan LY, Cao CX. Study on stability mechanism of immobilized pH gradient in isoelectric focusing via the Svensson–Tiselius differential equation and moving reaction boundary. Talanta 2013; 111:20-7. [DOI: 10.1016/j.talanta.2013.03.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 03/07/2013] [Accepted: 03/10/2013] [Indexed: 01/05/2023]
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17
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Zheng L, Senda Y, Abe S. Perturbation in protein expression of the sterile salmonid hybrids between female brook trout Salvelinus fontinalis and male masu salmon Oncorhynchus masou during early spermatogenesis. Anim Reprod Sci 2013; 138:292-304. [DOI: 10.1016/j.anireprosci.2013.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 02/21/2013] [Accepted: 03/01/2013] [Indexed: 10/27/2022]
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18
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Ignatova M, Guével B, Com E, Haddad N, Rossero A, Bogard P, Prévost H, Guillou S. Two-dimensional fluorescence difference gel electrophoresis analysis of Listeria monocytogenes submitted to a redox shock. J Proteomics 2013. [DOI: 10.1016/j.jprot.2012.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gan H, Cai T, Lin X, Wu Y, Wang X, Yang F, Han C. Integrative proteomic and transcriptomic analyses reveal multiple post-transcriptional regulatory mechanisms of mouse spermatogenesis. Mol Cell Proteomics 2013; 12:1144-57. [PMID: 23325766 DOI: 10.1074/mcp.m112.020123] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mammalian spermatogenesis consists of many cell types and biological processes and serves as an excellent model for studying gene regulation at transcriptional and post-transcriptional levels. Many key proteins, miRNAs, and perhaps piRNAs have been shown to be involved in post-transcriptional regulation of spermatogenesis. However, a systematic method for assessing the relationship between protein and mRNA expression has not been available for studying mechanisms of post-transcriptional regulation. In the present study, we used the iTRAQ-based quantitative proteomic approach to identify 2008 proteins in mouse type A spermatogonia, pachytene spermatocytes, round spermatids, and elongative spermatids with high confidence. Of these proteins, 1194 made up four dynamically changing clusters, which reflect the mitotic amplification, meiosis, and post-meiotic development of germ cells. We identified five major regulatory mechanisms termed "transcript only," "transcript degradation," "translation repression," "translation de-repression," and "protein degradation" based on changes in protein level relative to changes in mRNA level at the mitosis/meiosis transition and the meiosis/post-meiotic development transition. We found that post-transcriptional regulatory mechanisms are related to the generation of piRNAs and antisense transcripts. Our results provide a valuable inventory of proteins produced during mouse spermatogenesis and contribute to elucidating the mechanisms of the post-transcriptional regulation of gene expression in mammalian spermatogenesis.
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Affiliation(s)
- Haiyun Gan
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, PR China
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Abstract
Spermatogenesis is a highly sophisticated process involved in the transmission of genetic heritage. It includes halving ploidy, repackaging of the chromatin for transport, and the equipment of developing spermatids and eventually spermatozoa with the advanced apparatus (e.g., tightly packed mitochondrial sheat in the mid piece, elongating of the tail, reduction of cytoplasmic volume) to elicit motility once they reach the epididymis. Mammalian spermatogenesis is divided into three phases. In the first the primitive germ cells or spermatogonia undergo a series of mitotic divisions. In the second the spermatocytes undergo two consecutive divisions in meiosis to produce haploid spermatids. In the third the spermatids differentiate into spermatozoa in a process called spermiogenesis. Paracrine, autocrine, juxtacrine, and endocrine pathways all contribute to the regulation of the process. The array of structural elements and chemical factors modulating somatic and germ cell activity is such that the network linking the various cellular activities during spermatogenesis is unimaginably complex. Over the past two decades, advances in genomics have greatly improved our knowledge of spermatogenesis, by identifying numerous genes essential for the development of functional male gametes. Large-scale analyses of testicular function have deepened our insight into normal and pathological spermatogenesis. Progress in genome sequencing and microarray technology have been exploited for genome-wide expression studies, leading to the identification of hundreds of genes differentially expressed within the testis. However, although proteomics has now come of age, the proteomics-based investigation of spermatogenesis remains in its infancy. Here, we review the state-of-the-art of large-scale proteomic analyses of spermatogenesis, from germ cell development during sex determination to spermatogenesis in the adult. Indeed, a few laboratories have undertaken differential protein profiling expression studies and/or systematic analyses of testicular proteomes in entire organs or isolated cells from various species. We consider the pros and cons of proteomics for studying the testicular germ cell gene expression program. Finally, we address the use of protein datasets, through integrative genomics (i.e., combining genomics, transcriptomics, and proteomics), bioinformatics, and modelling.
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Affiliation(s)
- Sophie Chocu
- Inserm, U1085, IRSET, University of Rennes I, Campus de Beaulieu, Rennes, France
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Upadhyay RD, Balasinor NH, Kumar AV, Sachdeva G, Parte P, Dumasia K. Proteomics in reproductive biology: beacon for unraveling the molecular complexities. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2012; 1834:8-15. [PMID: 23072795 DOI: 10.1016/j.bbapap.2012.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 09/10/2012] [Accepted: 10/04/2012] [Indexed: 12/21/2022]
Abstract
Proteomics, an interface of rapidly evolving advances in physics and biology, is rapidly developing and expanding its potential applications to molecular and cellular biology. Application of proteomics tools has contributed towards identification of relevant protein biomarkers that can potentially change the strategies for early diagnosis and treatment of several diseases. The emergence of powerful mass spectrometry-based proteomics technique has added a new dimension to the field of medical research in liver, heart diseases and certain forms of cancer. Most proteomics tools are also being used to study physiological and pathological events related to reproductive biology. There have been attempts to generate the proteomes of testes, sperm, seminal fluid, epididymis, oocyte, and endometrium from reproductive disease patients. Here, we have reviewed proteomics based investigations in humans over the last decade, which focus on delineating the mechanism underlying various reproductive events such as spermatogenesis, oogenesis, endometriosis, polycystic ovary syndrome, embryo development. The challenge is to harness new technologies like 2-DE, DIGE, MALDI-MS, SELDI-MS, MUDPIT, LC-MS etc., to a greater extent to develop widely applicable clinical tools in understanding molecular aspects of reproduction both in health and disease.
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Affiliation(s)
- Rahul D Upadhyay
- Department of Neuroendocrinology, National Institute for Research in Reproductive Health, J.M. Street, Parel, Mumbai-400012, India.
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Maselli J, Hales BF, Chan P, Robaire B. Exposure to bleomycin, etoposide, and cis-platinum alters rat sperm chromatin integrity and sperm head protein profile. Biol Reprod 2012; 86:166, 1-10. [PMID: 22402960 DOI: 10.1095/biolreprod.111.098616] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Testicular cancer, currently the most common cancer affecting men of reproductive age, is one of the most curable malignancies due to the progress made in the early diagnosis and effective treatment of this disease. The coadministration of bleomycin, etoposide, and cis-platinum (BEP) has brought the 5-yr survival rate of testis cancer patients to over 90%. However, this treatment results in reproductive chemotoxic effects. We assessed the effect of BEP treatment on sperm chromatin integrity and sperm head protein profiles of adult male Brown Norway rats following 9 wk of treatment with BEP and in animals treated for 9 wk and then subjected to a 9-wk recovery period. Both the susceptibility of DNA to denaturation and the number of strand breaks were significantly increased in mature sperm following 9 wk of treatment with BEP; proteomic analysis revealed that the expression of several proteins, including HSP90AA1 and HSP90B1, was markedly affected. Following a 9-wk recovery period, mature sperm did not show significant DNA damage, indicating that repair had potentially occurred. Interestingly, the protamination level of the sperm of these animals was significantly decreased, while histones HIST1H1D (H1.2), HIST1H4B (H4), HIST2H2AA3 (H2A1), and HIST1H2BA (H2B1A) were concomitantly up-regulated; this was not observed in the sperm immediately following 9 wk of treatment. Thus, there are persistent effects on proteins in sperm heads from the cauda epididymidis 9 wk posttreatment, in the absence of DNA strand breaks. We suggest that these effects on the sperm head proteome may contribute to long-lasting adverse effects in the progeny of BEP-exposed males.
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Affiliation(s)
- Jennifer Maselli
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada
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Lincet H, Guével B, Pineau C, Allouche S, Lemoisson E, Poulain L, Gauduchon P. Comparative 2D-DIGE proteomic analysis of ovarian carcinoma cells: Toward a reorientation of biosynthesis pathways associated with acquired platinum resistance. J Proteomics 2012; 75:1157-69. [DOI: 10.1016/j.jprot.2011.10.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 09/29/2011] [Accepted: 10/27/2011] [Indexed: 01/08/2023]
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Sarr O, Louveau I, Le Huërou-Luron I, Gondret F. Adipose tissue proteomes of intrauterine growth-restricted piglets artificially reared on a high-protein neonatal formula. J Nutr Biochem 2012; 23:1417-24. [PMID: 22221677 DOI: 10.1016/j.jnutbio.2011.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 09/06/2011] [Accepted: 09/08/2011] [Indexed: 02/03/2023]
Abstract
The eventuality that adipose tissues adapt to neonatal nutrition in a way that may program later adiposity or obesity in adulthood is receiving increasing attention in neonatology. This study assessed the immediate effects of a high-protein neonatal formula on proteome profiles of adipose tissues in newborn piglets with intrauterine growth restriction. Piglets (10th percentile) were fed milk replacers formulated to provide an adequate (AP) or a high (HP) protein supply from day 2 to the day prior weaning (day 28, n=5 per group). Adipocytes with small diameters were present in greater proportions in subcutaneous and perirenal adipose tissues from HP piglets compared with AP ones at this age. Two-dimensional gel electrophoresis analysis of adipose tissue depots revealed a total of 32 protein spots being up- or down-regulated (P<.10) for HP piglets compared with AP piglets; 18 of them were unambiguously identified by mass spectrometry. These proteins were notably related to signal transduction (annexin 2), redox status (peroxiredoxin 6, glutathione S-transferase omega 1, cyclophilin-A), carbohydrate metabolism (ribose-5-phosphate dehydrogenase, lactate dehydrogenase), amino acid metabolism (glutamate dehydrogenase 1) and cell cytoskeleton dynamics (dynactin and cofilin-1). Proteomic changes occurred mainly in dorsal subcutaneous adipose tissue, with the notable exception of annexin 1 involved in lipid metabolic process having a lower abundance in HP piglets for perirenal adipose tissue only. Together, modulation in those proteins could represent a novel starting point for elucidating catch-up fat growth observed in later life in growing animals having been fed HP formula.
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Affiliation(s)
- Ousseynou Sarr
- INRA, UMR1079 Systèmes d'Elevage Nutrition Animale et Humaine, F-35590 Saint-Gilles, France
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Collet B, Guitton N, Saïkali S, Avril T, Pineau C, Hamlat A, Mosser J, Quillien V. Differential analysis of glioblastoma multiforme proteome by a 2D-DIGE approach. Proteome Sci 2011; 9:16. [PMID: 21470419 PMCID: PMC3083325 DOI: 10.1186/1477-5956-9-16] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 04/06/2011] [Indexed: 01/16/2023] Open
Abstract
Background Genomics, transcriptomics and proteomics of glioblastoma multiforme (GBM) have recently emerged as possible tools to discover therapeutic targets and biomarkers for new therapies including immunotherapy. It is well known that macroscopically complete surgical excision, radiotherapy and chemotherapy have therapeutic limitations to improve survival in these patients. In this study, we used a differential proteomic-based technique (2D-Difference Gel Electrophoresis) coupled with matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry to identify proteins that may serve as brain tumor antigens in new therapeutic assays. Five samples of patients presenting a GBM and five samples of microscopically normal brain tissues derived from brain epileptic surgery specimen were labeled and run in 2D-PAGE (Two-Dimensional Polyacrylamide Gel Electrophoresis) with an internal pool sample on each gel. Five gels were matched and compared with DIA (Difference In-gel Analysis) software. Differential spots were picked, in-gel digested and peptide mass fingerprints were obtained. Results From 51 protein-spots significantly up-regulated in GBM samples, mass spectrometry (MS) identified twenty-two proteins. The differential expression of a selected protein set was first validated by western-blotting, then tested on large cohorts of GBM specimens and non-tumor tissues, using immunohistochemistry and real-time RT-PCR. Conclusions Our results confirmed the importance of previously described proteins in glioma pathology and their potential usefulness as biological markers but also revealed some new interesting targets for future therapies.
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Oliva R, De Mateo S, Castillo J, Azpiazu R, Oriola J, Ballescà JL. Methodological advances in sperm proteomics. HUM FERTIL 2011; 13:263-7. [PMID: 21117936 DOI: 10.3109/14647273.2010.516877] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Proteomics is the study of the proteins of cells or tissues. Sperm proteomics aims to identify the proteins that compose the sperm cell and the study of their function. Recent developments in mass spectrometry (MS) have markedly increased the throughput to identify and study sperm proteins. Catalogues of hundreds to thousands of spermatozoan proteins in human and in model species are becoming available setting up the basis for subsequent research, diagnostic applications and the development of specific treatments. A wide range of MS techniques are also rapidly becoming available for researchers. The present review summarises the different methodological options to study the sperm cell using MS and to provide a summary of some of the ongoing proteomic studies.
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Affiliation(s)
- Rafael Oliva
- Human Genetics Research Group, IDIBAPS, Faculty of Medicine, University of Barcelona, Casanova, Barcelona, Spain
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Huang SY, Lin JH, Teng SH, Sun HS, Chen YH, Chen HH, Liao JY, Chung MT, Chen MY, Chuang CK, Lin EC, Huang MC. Differential expression of porcine testis proteins during postnatal development. Anim Reprod Sci 2011; 123:221-33. [DOI: 10.1016/j.anireprosci.2010.11.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 11/20/2010] [Accepted: 11/30/2010] [Indexed: 11/29/2022]
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Huang XY, Sha JH. Proteomics of spermatogenesis: from protein lists to understanding the regulation of male fertility and infertility. Asian J Androl 2011; 13:18-23. [PMID: 21076435 PMCID: PMC3739396 DOI: 10.1038/aja.2010.71] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 09/17/2010] [Accepted: 09/20/2010] [Indexed: 01/19/2023] Open
Abstract
Proteomic technologies have undergone significant development in recent years, which has led to extensive advances in protein research. Currently, proteomic approaches have been applied to many scientific areas, including basic research, various disease and malignant tumour diagnostics, biomarker discovery and other therapeutic applications. In addition, proteomics-driven research articles examining reproductive biology and medicine are becoming increasingly common. The key challenge for this field is to move from lists of identified proteins to obtaining biological information regarding protein function. The present article reviews the available scientific literature related to spermatogenesis. In addition, this study uses two-dimensional electrophoresis mass spectrometry (2DE-MS) and liquid chromatography (LC)-MS to construct a series of proteome profiles describing spermatogenesis. This large-scale identification of proteins provides a rich resource for elucidating the mechanisms underlying male fertility and infertility.
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Affiliation(s)
- Xiao-Yan Huang
- Lab of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China
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Oliva R, Castillo J. Proteomics and the genetics of sperm chromatin condensation. Asian J Androl 2010; 13:24-30. [PMID: 21042303 DOI: 10.1038/aja.2010.65] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Spermatogenesis involves extremely marked cellular, genetic and chromatin changes resulting in the generation of the highly specialized sperm cell. Proteomics allows the identification of the proteins that compose the spermatogenic cells and the study of their function. The recent developments in mass spectrometry (MS) have markedly increased the throughput to identify and to study the sperm proteins. Catalogs of thousands of testis and spermatozoan proteins in human and different model species are becoming available, setting up the basis for subsequent research, diagnostic applications and possibly the future development of specific treatments. The present review intends to summarize the key genetic and chromatin changes at the different stages of spermatogenesis and in the mature sperm cell and to comment on the presently available proteomic studies.
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Affiliation(s)
- Rafael Oliva
- Human Genetics Research Group, IDIBAPS, Department of Ciencias Fisiológicas I, Faculty of Medicine, University of Barcelona, Barcelona 08036, Spain.
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Trépos-Pouplard M, Lardenois A, Staub C, Guitton N, Dorval-Coiffec I, Pineau C, Primig M, Jégou B. Proteome analysis and genome-wide regulatory motif prediction identify novel potentially sex-hormone regulated proteins in rat efferent ducts. INTERNATIONAL JOURNAL OF ANDROLOGY 2010; 33:661-74. [PMID: 19906187 DOI: 10.1111/j.1365-2605.2009.01006.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The efferent ducts are a series of tubules that conduct sperm from the rete testis to the epididymis. They absorb most fluid and proteins originating from the rete testis during concentration of spermatozoa prior to their entry into the epididymis. Proteome analysis of micro-dissected efferent duct samples from adult rats was combined with genome-wide computational prediction of conserved hormone response elements to identify factors likely regulated by oestrogens and androgens. We identified 165 proteins and found subsets of the promoters controlling their corresponding genes to contain androgen- and oestrogen response elements (ARE/EREs) at similar frequencies. Moreover, EREs were significantly enriched among the loci identified compared with their genome-wide occurrence. The expression and localization of Anxa6, Ckb, Krt19, Park7, Pdzk1 and Tpt1 in the efferent ducts and other related hormone controlled tissues was further validated at the RNA or protein level. This study identifies many novel proteins predicted to play roles in sperm maturation and male fertility and provides significant computational evidence that the efferent ducts express genes transcriptionally controlled by sex hormones.
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Calvel P, Rolland AD, Jégou B, Pineau C. Testicular postgenomics: targeting the regulation of spermatogenesis. Philos Trans R Soc Lond B Biol Sci 2010; 365:1481-500. [PMID: 20403865 DOI: 10.1098/rstb.2009.0294] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Sperm are, arguably, the most differentiated cells produced within the body of any given species. This is owing to the fact that spermatogenesis is an intricate and highly specialized process evolved to suit the individual particularities of each sexual species. Despite a vast diversity in method, the aim of spermatogenesis is always the same, the idealized transmission of genetic patrimony. Towards this goal certain requirements must always be met, such as a relative twofold reduction in ploidy, repackaging of the chromatin for transport and specialized enhancements for cell motility, recognition and fusion. In the past 20 years, the study of molecular networks coordinating male germ cell development, particularly in mammals, has become more and more facilitated thanks to large-scale analyses of genome expression. Such postgenomic endeavors have generated landscapes of data for both fundamental and clinical reproductive biology. Continuous, large-scale integration analyses of these datasets are undertaken which provide access to very precise information on a myriad of biomolecules. This review presents commonly used transcriptomic and proteomic workflows applied to various testicular germ cell studies. We will also provide a general overview of the technical possibilities available to reproductive genomic biologists, noting the advantages and drawbacks of each technique.
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Affiliation(s)
- Pierre Calvel
- Inserm, U625, IFR 140, University of Rennes I, Campus de Beaulieu, Rennes 35042, France
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Sarr O, Louveau I, Kalbe C, Metges CC, Rehfeldt C, Gondret F. Prenatal exposure to maternal low or high protein diets induces modest changes in the adipose tissue proteome of newborn piglets1,2. J Anim Sci 2010; 88:1626-41. [DOI: 10.2527/jas.2009-2542] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Loppion G, Lavigne R, Pineau C, Auvray P, Sourdaine P. Proteomic analysis of the spermatogonial stem cell compartment in dogfish Scyliorhinus canicula L. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2010; 5:157-64. [PMID: 20435534 DOI: 10.1016/j.cbd.2010.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 03/22/2010] [Accepted: 03/27/2010] [Indexed: 01/15/2023]
Abstract
In the dogfish (Scyliorhinus canicula L.) the testicular germinative zone (GZ), composed of large isolated spermatogonia surrounded by elongating pre-Sertoli cells, is located between the albuginea and the ventrolateral intratesticular vessel. During the spermatogenic wave, cysts radiate in maturational order forming distinct testicular zones. In this study, soluble proteins of the GZ and of the zone containing cysts with spermatocytes were separated by two-dimensional electrophoresis. Gel images were matched and then evaluated for GZ-specific proteins. From the1400 protein spots identified, 680 were found to be apparently specific to this zone. Using MALDI-TOF/TOF mass spectrometry, de novo sequences were obtained for 33 proteins out of the 169 selected for identification by mass spectrometry, but only 16 of these 169 proteins were identified. One of them, proteasome subunit alpha-6, was analyzed further by immunohistochemistry. This study demonstrates the utility of the dogfish as a model for proteome analysis of the spermatogonial stem cell niche, even if it remains restricted by the lack of genomic data available on Elasmobranchs.
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Affiliation(s)
- Géraldine Loppion
- UMR M Ifremer, Physiologie et Ecophysiologie des Mollusques Marins, IFR ICORE, Université de Caen Basse-Normandie, France
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Calvel P, Kervarrec C, Lavigne R, Vallet-Erdtmann V, Guerrois M, Rolland AD, Chalmel F, Jégou B, Pineau C. CLPH, a novel casein kinase 2-phosphorylated disordered protein, is specifically associated with postmeiotic germ cells in rat spermatogenesis. J Proteome Res 2009; 8:2953-65. [PMID: 19271754 DOI: 10.1021/pr900082m] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In a recent proteomic study of rat spermatogenesis, we identified CLPH (for Casein-Like PHosphoprotein), a new testis-specific protein expressed exclusively in postmeiotic germ cells. In situ hybridization showed that the CLPH transcript was mainly present in round spermatids, whereas the protein was specifically detected by immunohistochemistry in elongated spermatids and in residual bodies. Electron microscopy showed the protein to be mostly cytoplasmic, but also frequently associated with the mitochondrial inner membrane during the last steps of spermatid differentiation. The Clph gene was found to be present solely in mammalian genomes, in a chromosomal region syntenic to the mammalian cluster of secretory calcium-binding phosphoprotein (SCPP) genes. CLPH has several distinctive properties in common with SCPPs: calcium overlay experiments showed that CLPH was a calcium-binding protein, whereas trypsin digestion assay, circular dichroism and fluorescence experiments demonstrated its intrinsically disordered structure. We also showed that CLPH was phosphorylated in vitro and in vivo by casein kinase 2, an enzyme critical for spermatid elongation. Given the specific and strong production of CLPH during rat spermiogenesis, together with the particular biochemical properties of this protein, we suggest that CLPH is involved in the extremely complex structural rearrangements occurring in haploid germ cells during spermiogenesis.
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Affiliation(s)
- Pierre Calvel
- Inserm, U625, Rennes, Universite Rennes I, Campus de Beaulieu, IFR-140, GERHM, Rennes, F-35042, France
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Oliva R, Martínez-Heredia J, Estanyol JM. Proteomics in the Study of the Sperm Cell Composition, Differentiation and Function. Syst Biol Reprod Med 2009; 54:23-36. [DOI: 10.1080/19396360701879595] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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36
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Liu J, Damon M, Guitton N, Guisle I, Ecolan P, Vincent A, Cherel P, Gondret F. Differentially-expressed genes in pig Longissimus muscles with contrasting levels of fat, as identified by combined transcriptomic, reverse transcription PCR, and proteomic analyses. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:3808-3817. [PMID: 19296579 DOI: 10.1021/jf8033144] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Intramuscular fat content is important for many meat quality parameters. This work is aimed at identifying functional categories of genes associated with natural variation among individuals in intramuscular fat content to help the design of genetic schemes for high marbling potential. Taking advantage of the global nature of transcriptomic and proteomic technologies, 40 genes were identified as differently expressed between high fat and low fat pig Longissimus muscles at slaughter weight. They are involved in metabolic processes, cell communication, binding, and response to stimulus. Using real-time PCR in muscle biopsies taken earlier in the fattening period, the group with a high intramuscular fat content was also characterized by the down-expression of genes playing a negative role in adipogenesis, such as architectural transcription factor high-motility hook A1, mitogen activated protein-kinase14, and cyclin D1. These results suggest that interindividual variability in intramuscular fat content might arise essentially from differences in early adipogenesis.
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Affiliation(s)
- Jingshun Liu
- INRA, UMR1079 Systèmes d'Elevage Nutrition Animale et Humaine, 35590 Saint Gilles, France
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Testicular Development and Spermatogenesis: Harvesting the Postgenomics Bounty. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 636:16-41. [DOI: 10.1007/978-0-387-09597-4_2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Gondret F, Guitton N, Guillerm-Regost C, Louveau I. Regional differences in porcine adipocytes isolated from skeletal muscle and adipose tissues as identified by a proteomic approach. J Anim Sci 2008; 86:2115-25. [DOI: 10.2527/jas.2007-0750] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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40
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Huang XY, Guo XJ, Shen J, Wang YF, Chen L, Xie J, Wang NL, Wang FQ, Zhao C, Huo R, Lin M, Wang X, Zhou ZM, Sha JH. Construction of a proteome profile and functional analysis of the proteins involved in the initiation of mouse spermatogenesis. J Proteome Res 2008; 7:3435-46. [PMID: 18582094 DOI: 10.1021/pr800179h] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spermatogenesis is a complex process of terminal differentiation wherein mature sperm are produced. In the first wave of mouse spermatogenesis, different spermatogenic cells appear at specific time points, and their appearance is expected to be accompanied by changes in specific protein expression patterns. In this study, we used 2D-PAGE and MALDI-TOF/TOF technology to construct a comparative proteome profile for mouse testis at specific time points (days 0, 7, 14, 21, 28, and 60 postpartum). We identified 362 differential protein spots corresponding to 257 different proteins. Further cluster analysis revealed 6 expression patterns, and bioinformatics analysis revealed that each pattern was related to many specific cell processes. Among them, 28 novel proteins with unknown functions neither in somatic cells nor germ cells were identified, 8 of which were found to be uniquely or highly expressed in mouse testes via comparison with the GNF SymAtlas database. Further, we randomly selected 7 protein spots and the above 8 novel proteins to verify the expression pattern via Western blotting and RT-PCR, and 6 proteins with little information in testis were further investigated to explore their cellular localization during spermatogenesis by performing immunohistochemistry for the mouse testis tissue. Taken together, the above results reveal an important proteome profile that is functional during the first wave of mouse spermatogenesis, and they provide a strong basis for further research.
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Affiliation(s)
- Xiao-Yan Huang
- Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
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