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Kim SG, Jeon JH, Shin SH, Varias DC, Moon SH, Ryu BY. Inhibition of reactive oxygen species generation by N-Acetyl Cysteine can mitigate male germ cell toxicity induced by bisphenol analogs. Food Chem Toxicol 2024; 188:114652. [PMID: 38583502 DOI: 10.1016/j.fct.2024.114652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/25/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
The estrogen-like effect of bisphenol A (BPA) disrupting the maintenance of functional male germ cells is associated with male sub-fertility. This study investigated toxicity of male germ cells induced by four bisphenol analogs: BPA, BPAF, BPF, and BPS. The investigation of bisphenol analogs' impact on male germ cells included assessing proliferation, apoptosis induction, and the capacity to generate reactive oxygen species (ROS) in GC-1 spermatogonia (spg) cells, specifically type B spermatogonia. Additionally, the therapeutic potential and protective effects of N-Acetyl Cysteine (NAC) and NF-κB inhibitor parthenolide was evaluated. In comparison to BPA, BPF and BPS, BPAF exhibited the most pronounced adverse effect in GC-1 spg cell proliferation. This effect was characterized by pronounced inhibition of phosphorylation of PI3K, AKT, and mTOR, along with increased release of cytochrome c and subsequent cleavages of caspase 3, caspase 7, and poly (ADP-ribose) polymerase. Both NAC and parthenolide were effective reducing cellular ROS induced by BPAF. However, only NAC demonstrated a substantial recovery in proliferation, accompanied by a significant reduction in cytochrome c release and cleaved PARP. These results suggest that NAC supplementation may play an effective therapeutic role in countering germ cell toxicity induced by environmental pollutants with robust oxidative stress-generating capacity.
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Affiliation(s)
- Seul Gi Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
| | - Jeong Hoon Jeon
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
| | - Seung Hee Shin
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
| | - Daniel Chavez Varias
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
| | - Sung-Hwan Moon
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
| | - Buom-Yong Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, 17546, Republic of Korea.
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2
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Kim SH, Shin SH, Kim SM, Jung SE, Shin BJ, Ahn JS, Lim KT, Kim DH, Lee K, Ryu BY. Bisphenol Analogs Downregulate the Self-Renewal Potential of Spermatogonial Stem Cells. World J Mens Health 2024; 42:42.e37. [PMID: 38606862 DOI: 10.5534/wjmh.230166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 12/10/2023] [Accepted: 12/28/2023] [Indexed: 04/13/2024] Open
Abstract
PURPOSE In this study, we investigated the effect of bisphenol-A (BPA) and its major analogs, bisphenol-F (BPF), and bisphenol-S (BPS), on spermatogonial stem cells (SSCs) populations using in vitro SSC culture and in vivo transplantation models. MATERIALS AND METHODS SSCs enriched from 6- to 8-day-old C57BL/6-eGFP+ male mice testes were treated with varying concentrations of bisphenols for 7 days to examine bisphenol-derived cytotoxicity and changes in SSC characteristics. We utilized flow cytometry, immunocytochemistry, real-time quantitative reverse transcription-PCR, and western blot analysis. The functional alteration of SSCs was further investigated by examining donor SSC-derived spermatogenesis evaluation through in vivo transplantation and subsequent testis analysis. RESULTS BPF exhibited a similar inhibitory effect on SSCs as BPA, demonstrating a significant decrease in SSC survival, inhibition of proliferation, and induction of apoptosis. On the other hand, while BPS was comparatively weaker than BPA and BPF, it still showed significant SSC cytotoxicity. Importantly, SSCs exposed to BPA, BPF, and BPS exhibited a significant reduction in donor SSC-derived germ cell colonies per total number of cultured cells, indicating that, like BPA, BPF, and BPS can induce a comparable reduction in functional SSCs in the recipient animals. However, the progress of spermatogenesis, as evidenced by histochemistry and the expressions of PCNA and SSC specific markers, collectively indicates that BPA, BPF, and BPS may not adversely affect the spermatogenesis. CONCLUSIONS Our findings indicate that the major BPA substitutes, BPF and BPS, have significant cytotoxic effects on SSCs, similar to BPA. These effects may lead to a reduction in the functional self-renewal stem cell population and potential impacts on male fertility.
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Affiliation(s)
- Seo-Hee Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Seung Hee Shin
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Seok-Man Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Sang-Eun Jung
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Beom-Jin Shin
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Jin Seop Ahn
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea
| | - Kyoung Taek Lim
- Department of Urology, Maria Fertility Hospital, Seoul, Korea
| | - Dong-Hwan Kim
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - Kichoon Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - Buom-Yong Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Korea.
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Štefunková N, Greifová H, Jambor T, Tokárová K, Zuščíková L, Bažány D, Massányi P, Capcarová M, Lukáč N. Comparison of the Effect of BPA and Related Bisphenols on Membrane Integrity, Mitochondrial Activity, and Steroidogenesis of H295R Cells In Vitro. Life (Basel) 2023; 14:3. [PMID: 38276253 PMCID: PMC10821247 DOI: 10.3390/life14010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 01/27/2024] Open
Abstract
Bisphenol A (BPA) is an endocrine-disruptive chemical that is widely utilized in the production of polycarbonate plastic and epoxy resin, which are used to make a wide range of consumer products, food and drink containers, and medical equipment. When the potential risk of BPA emerged, it was substituted by allegedly less harmful substitutes such as bisphenols S, F, B, and AF. However, evidence suggests that all bisphenols can have endocrine-disruptive effects, while the extent of these effects is unknown. This study aimed to determine effect of BPA, BPAF, BPB, BPF, and BPS on viability and steroidogenesis in human adrenocortical carcinoma cell line in vitro. The cytotoxicity of bisphenols was shown to be considerable at higher doses. However, at low concentrations, it improved viability as well as steroid hormone secretion, indicating that bisphenols have a biphasic, hormetic effect in biological systems. The results are consistent with the hypothesis that bisphenols selectively inhibit some steroidogenic enzymes. These findings suggest that bisphenols have the potential to disrupt cellular steroidogenesis in humans, but substantially more detailed and systematic research is needed to gain a better understanding of the risks associated with bisphenols and their endocrine-disrupting effect on humans and wildlife.
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Affiliation(s)
- Nikola Štefunková
- Institute of Applied Biology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia (P.M.)
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4
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Mora Lagares L, Vračko M. Ecotoxicological Evaluation of Bisphenol A and Alternatives: A Comprehensive In Silico Modelling Approach. J Xenobiot 2023; 13:719-739. [PMID: 38132707 PMCID: PMC10744758 DOI: 10.3390/jox13040046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/23/2023] Open
Abstract
Bisphenol A (BPA), a compound widely used in industrial applications, has raised concerns due to its environmental impact. As a key component in the manufacture of polycarbonate plastics and epoxy resins used in many consumer products, concerns about potential harm to human health and the environment are unavoidable. This study seeks to address these concerns by evaluating a range of potential BPA alternatives, focusing on their ecotoxicological properties. The research examines 76 bisphenols, including BPA derivatives, using a variety of in silico ecotoxicological models, although it should be noted that these models were not developed exclusively for this particular class of compounds. Consequently, interpretations should be made with caution. The results of this study highlight specific compounds of potential environmental concern and underscore the need to develop more specific models for BPA alternatives that will allow for more accurate and reliable assessment.
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Affiliation(s)
- Liadys Mora Lagares
- Laboratory for Cheminformatics, Theory Department, National Institute of Chemistry, 1000 Ljubljana, Slovenia;
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5
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Patrício D, Santiago J, Mano JF, Fardilha M. Organoids of the male reproductive system: Challenges, opportunities, and their potential use in fertility research. WIREs Mech Dis 2023; 15:e1590. [PMID: 36442887 DOI: 10.1002/wsbm.1590] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/17/2022] [Accepted: 11/12/2022] [Indexed: 11/30/2022]
Abstract
Organoids are units of function of a given organ able to reproduce, in culture, a biological structure similar in architecture and function to its counterpart in vivo. Today, it is possible to develop an organoid from a fragment of tissue, a stem cell located in an adult organ, an embryonic stem cell, or an induced pluripotent stem cell. In the past decade, many organoids have been developed which mimic stomach, pancreas, liver and brain tissues, optic cups, among many others. Additionally, different male reproductive system organs have already been developed as organoids, including the prostate and testis. These 3D cultures may be of great importance for urological cancer research and have the potential to be used in fertility research for the study of spermatozoa production and maturation, germ cells-somatic cells interactions, and mechanisms of disease. They also provide an accurate preclinical pipeline for drug testing and discovery, as well as for the study of drug resistance. In this work, we revise the current knowledge on organoid technology and its use in healthcare and research, describe the male reproductive system organoids and other biomaterials already developed, and discuss their current application. Finally, we highlight the research gaps, challenges, and opportunities in the field and propose strategies to improve the use of organoids for the study of male infertility situations. This article is categorized under: Reproductive System Diseases > Stem Cells and Development Reproductive System Diseases > Biomedical Engineering.
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Affiliation(s)
- Daniela Patrício
- Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal.,Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Joana Santiago
- Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - João F Mano
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Margarida Fardilha
- Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
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6
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Chakraborty S, Dissanayake M, Godwin J, Wang X, Bhandari RK. Ancestral BPA exposure caused defects in the liver of medaka for four generations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159067. [PMID: 36174697 PMCID: PMC10593180 DOI: 10.1016/j.scitotenv.2022.159067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 07/01/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Environmental chemicals can induce liver defects in experimental animals due to their direct and acute exposure. It is not clear whether environmental chemical exposures result in the transgenerational passage of liver defects in subsequent generations living in an uncontaminated environment. Bisphenol A (BPA), a plasticizer chemical, has been ubiquitous in the environment in the recent decade. Every organism is exposed to this chemical at some point during its lifetime. Literature suggests that direct BPA exposure can result in several metabolic diseases, including non-alcoholic fatty liver disease (NAFLD). Despite the phasing out of BPA from several consumer goods, it is unclear whether ancestral BPA exposure causes liver health problems in the unexposed future generations. Here, we demonstrate an advanced stage of NAFLD in the grandchildren (F2 generation) of medaka fish (Oryzias latipes) due to embryonic BPA exposure in the grandparental generation (F0), which persists for five generations (F4) even in the absence of BPA. The severity of transgenerational NAFLD phenotype included steatosis together with perisinusoidal fibrosis and apoptosis of hepatocytes. Adult females developed more severe histopathological conditions in the liver than males. Genes encoding enzymes involved in lipolytic pathways were significantly decreased. The present results suggest that ancestral BPA exposure can result in transgenerational metabolic diseases that can persist for five generations and that the NAFLD trait is sexually dimorphic. Given that ancestral BPA exposure can lead to altered metabolic health outcomes in the subsequent unexposed generations, the development of the methods and strategies to mitigate the transgenerational onset of metabolic diseases seem imperative to protect future generations.
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Affiliation(s)
- Sourav Chakraborty
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Manthi Dissanayake
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Julia Godwin
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Xuegeng Wang
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA; Institute of Modern Aquaculture Science and Engineering, College of Life Sciences, South China Normal University, Guangzhou 510631, PR China
| | - Ramji Kumar Bhandari
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA.
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7
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Singh RD, Koshta K, Tiwari R, Khan H, Sharma V, Srivastava V. Developmental Exposure to Endocrine Disrupting Chemicals and Its Impact on Cardio-Metabolic-Renal Health. FRONTIERS IN TOXICOLOGY 2022; 3:663372. [PMID: 35295127 PMCID: PMC8915840 DOI: 10.3389/ftox.2021.663372] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/10/2021] [Indexed: 01/12/2023] Open
Abstract
Developmental origin of health and disease postulates that the footprints of early life exposure are followed as an endowment of risk for adult diseases. Epidemiological and experimental evidence suggest that an adverse fetal environment can affect the health of offspring throughout their lifetime. Exposure to endocrine disrupting chemicals (EDCs) during fetal development can affect the hormone system homeostasis, resulting in a broad spectrum of adverse health outcomes. In the present review, we have described the effect of prenatal EDCs exposure on cardio-metabolic-renal health, using the available epidemiological and experimental evidence. We also discuss the potential mechanisms of their action, which include epigenetic changes, hormonal imprinting, loss of energy homeostasis, and metabolic perturbations. The effect of prenatal EDCs exposure on cardio-metabolic-renal health, which is a complex condition of an altered biological landscape, can be further examined in the case of other environmental stressors with a similar mode of action.
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Affiliation(s)
- Radha Dutt Singh
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Kavita Koshta
- Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research, Lucknow, India.,Academy of Scientific and Innovative Research, New Delhi, India
| | - Ratnakar Tiwari
- Feinberg Cardiovascular and Renal Research Institute, Feinberg School of Medicine, Northwestern University Chicago, Chicago, IL, United States
| | - Hafizurrahman Khan
- Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research, Lucknow, India
| | - Vineeta Sharma
- Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research, Lucknow, India
| | - Vikas Srivastava
- Systems Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research, Lucknow, India.,Academy of Scientific and Innovative Research, New Delhi, India
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8
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Sahu C, Singla S, Jena G. Studies on male gonadal toxicity of bisphenol A in diabetic rats: An example of exacerbation effect. J Biochem Mol Toxicol 2022; 36:e22996. [DOI: 10.1002/jbt.22996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 12/07/2021] [Accepted: 01/04/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Chittaranjan Sahu
- Department of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies National Institute of Pharmaceutical Education and Research, S.A.S Nagar Sahibzada Ajit Singh Nagar Punjab India
| | - Shivani Singla
- Department of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies National Institute of Pharmaceutical Education and Research, S.A.S Nagar Sahibzada Ajit Singh Nagar Punjab India
| | - Gopabandhu Jena
- Department of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies National Institute of Pharmaceutical Education and Research, S.A.S Nagar Sahibzada Ajit Singh Nagar Punjab India
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9
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Tian GG, Zhao X, Hou C, Xie W, Li X, Wang Y, Wang L, Li H, Zhao X, Li J, Wu J. Integrative analysis of the 3D genome structure reveals that CTCF maintains the properties of mouse female germline stem cells. Cell Mol Life Sci 2022; 79:22. [PMID: 34981210 PMCID: PMC8724064 DOI: 10.1007/s00018-021-04107-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/24/2022]
Abstract
The three-dimensional configuration of the genome ensures cell type-specific gene expression profiles by placing genes and regulatory elements in close spatial proximity. Here, we used in situ high-throughput chromosome conformation (in situ Hi-C), RNA sequencing (RNA-seq) and chromatin immunoprecipitation sequencing (ChIP-seq) to characterize the high-order chromatin structure signature of female germline stem cells (FGSCs) and identify its regulating key factor based on the data-driven of multiple omics data. By comparison with pluripotent stem cells (PSCs), adult stem cells (ASCs), and somatic cells at three major levels of chromatin architecture, A/B compartments, topologically associating domains, and chromatin loops, the chromatin architecture of FGSCs was most similar to that of other ASCs and largely different from that of PSCs and somatic cells. After integrative analysis of the three-dimensional chromatin structure, active compartment-associating loops (aCALs) were identified as a signature of high-order chromatin organization in FGSCs, which revealed that CCCTC-binding factor was a major factor to maintain the properties of FGSCs through regulation of aCALs. We found FGSCs belong to ASCs at chromatin structure level and characterized aCALs as the high-order chromatin structure signature of FGSCs. Furthermore, CTCF was identified to play a key role in regulating aCALS to maintain the biological functions of FGSCs. These data provide a valuable resource for future studies of the features of chromatin organization in mammalian stem cells and further understanding of the fundamental characteristics of FGSCs.
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Affiliation(s)
- Geng G Tian
- Renji Hospital, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xinyan Zhao
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, China
| | - Changliang Hou
- Renji Hospital, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wenhai Xie
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, 310024, Zhejiang, China
| | - Xiaoyong Li
- Renji Hospital, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yinjuan Wang
- Renji Hospital, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lijuan Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Hua Li
- State Key Laboratory for Oncogenes and Bio-ID Center, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xiaodong Zhao
- Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jing Li
- Department of Bioinformatics and Biostatistics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Ji Wu
- Renji Hospital, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, China.
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10
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Lin Y, Fang Q, He Y, Gong X, Wang Y, Liang A, Wang G, Gong S, Wu J, Sun F. Thy1-Positive Spermatogonia Suppress the Proliferation of Spermatogonial Stem Cells by Extracellular Vesicles In Vitro. Endocrinology 2021; 162:6170580. [PMID: 33713403 DOI: 10.1210/endocr/bqab052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Indexed: 11/19/2022]
Abstract
The self-renewal of mammalian spermatogonial stem cells (SSCs) supports spermatogenesis to produce spermatozoa, and this is precisely controlled in a stem niche microenvironment in the seminiferous tubules. Although studies have revealed the role of the surrounding factors in SSCs, little is known about whether the division of SSCs is controlled by extracellular vesicles. Here, extracellular vesicles were found in the basal compartment of seminiferous tubules in mouse, rat, rabbit and human testes. In the mice, the testicular extracellular vesicles are secreted by spermatogonia and are taken up by SSCs. Further, the extracellular vesicles from thy1-positive spermatogonia were purified by anti-Thy1-coupled magnetic beads, which suppress their proliferation of SSCs but do not lead to the apoptosis in vitro.
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Affiliation(s)
- Yu Lin
- International Peace Maternity & Child Health Hospital, Shanghai Municipal Key Clinical Speciality, Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Qian Fang
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders, Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yue He
- International Peace Maternity & Child Health Hospital, Shanghai Municipal Key Clinical Speciality, Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xiaowen Gong
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders, Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yinjuan Wang
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders, Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ajuan Liang
- Department of Gynecology and Obstetrics, Center for Reproductive Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Guishuan Wang
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong 226001, China
| | - Shengnan Gong
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong 226001, China
| | - Ji Wu
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders, Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Fei Sun
- International Peace Maternity & Child Health Hospital, Shanghai Municipal Key Clinical Speciality, Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
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11
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Harnett KG, Chin A, Schuh SM. BPA and BPA alternatives BPS, BPAF, and TMBPF, induce cytotoxicity and apoptosis in rat and human stem cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 216:112210. [PMID: 33866271 DOI: 10.1016/j.ecoenv.2021.112210] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 05/25/2023]
Abstract
Bisphenol A (BPA) is a ubiquitous industrial chemical found in everyday plastic products and materials. Due to scientific findings on the reproductive, developmental, and cellular defects caused by BPA and heightened public awareness, manufacturers have begun to use new chemicals in place of BPA in "BPA-free" products. These alternatives are chemical analogs of BPA and include dozens of new compounds that have undergone relatively little testing and oversight, including: bisphenol S (BPS), bisphenol AF (BPAF), and the recently developed tetramethyl bisphenol F (TMBPF; the monomer of valPure V70). Here, we used adult female rat adipose-derived stem cells (rASCs) and human mesenchymal stem cells (hMSCs) to compare the toxicities and potencies of these BPA alternatives in vitro. Rat and human stem cells were exposed to BPA (1-10 μM), 17β-estradiol (E2; 10 μM), BPS (1-100 μM), BPAF (3×10-4-30 μM), TMBPF (0.01-50 μM), or control media alone (with 0.01% ethanol) for varying time intervals from 10 min to 24 h. We found significantly decreased cell viability and massive apoptosis in rat and human stem cells treated with each BPA analog, as early as 10 min of exposure, and at low, physiologically relevant doses. BPAF showed extreme cytotoxicity in a dose-dependent manner (LC50 =0.014 μM (rASCs) and 0.009 μM (hMSCs)), whereas TMBPF showed a bimodal response, with low and high concentrations being the most toxic (LC50 =0.88 μM (rASCs) and 0.06 μM (hMSCs)). Activated caspase-6 levels increased in nearly all cells treated with the BPA analogs indicating the majority of cell death was due to caspase-6-mediated apoptosis. These results in both rat and human stem cells underscore the toxicity and potency of these BPA analogs, and establish a rank order of potency of: BPAF>TMBPF>BPA>BPS. Further, these and other recent findings indicate that these newer BPA analogs may be 'regrettable substitutions,' being worse than the original parent compound and lacking proper testing and regulation. This work brings to light the need for further toxicological characterization, better regulation, greater public awareness, and the development of safer, more sustainable chemicals and non-plastic products.
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Affiliation(s)
- Kristen G Harnett
- Saint Mary's College of California, Department of Biology, Moraga, CA, USA
| | - Ashley Chin
- Saint Mary's College of California, Department of Biology, Moraga, CA, USA
| | - Sonya M Schuh
- Saint Mary's College of California, Department of Biology, Moraga, CA, USA.
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12
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Bisphenol A Exposure Changes the Transcriptomic and Proteomic Dynamics of Human Retinoblastoma Y79 Cells. Genes (Basel) 2021; 12:genes12020264. [PMID: 33670352 PMCID: PMC7918513 DOI: 10.3390/genes12020264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 12/14/2022] Open
Abstract
Bisphenol A (BPA) is a xenoestrogen chemical commonly used to manufacture polycarbonate plastics and epoxy resin and might affect various human organs. However, the cellular effects of BPA on the eyes have not been widely investigated. This study aimed to investigate the cellular cytotoxicity by BPA exposure on human retinoblastoma cells. BPA did not show cytotoxic effects, such as apoptosis, alterations to cell viability and cell cycle regulation. Comparative analysis of the transcriptome and proteome profiles were investigated after long-term exposure of Y79 cells to low doses of BPA. Transcriptome analysis using RNA-seq revealed that mRNA expression of the post-transcriptional regulation-associated gene sets was significantly upregulated in the BPA-treated group. Cell cycle regulation-associated gene sets were significantly downregulated by exposure to BPA. Interestingly, RNA-seq analysis at the transcript level indicated that alternative splicing events, particularly retained introns, were noticeably altered by low-dose BPA treatment. Additionally, proteome profiling using MALDI-TOF-MS identified a total of nine differentially expressed proteins. These results suggest that alternative splicing events and altered gene/protein expression patterns are critical phenomena affected by long-term low-dose BPA exposure. This represents a novel marker for the detection of various diseases associated with environmental pollutants such as BPA.
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Akash MSH, Sabir S, Rehman K. Bisphenol A-induced metabolic disorders: From exposure to mechanism of action. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 77:103373. [PMID: 32200274 DOI: 10.1016/j.etap.2020.103373] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
Bisphenol A (BPA) is considered as ubiquitous xenooestrogen and an endocrine disrupting chemical which has deleterious effects on endocrine functions. Human populations are continuously exposed to BPA as it is abundant in daily life. It has been found to be associated with wide range of metabolic disorders notably type 2 diabetes mellitus (DM). Numerous epidemiological studies have been conducted to find its role in development of DM. Experimental studies have found that BPA exposure is associated with pathogenesis of DM and also considered as a risk factor for gestational diabetes. Being a lipophilic compound, BPA is preferably accumulated in adipose tissues where it alters the production of adipokines that play important roles in insulin resistance. BPA induces apoptosis by caspase activation after mitochondrial damage and it impairs insulin signaling pathways by altering associated ion channel activity especially potassium channels. Perinatal exposure of BPA makes offspring more susceptible to develop DM in early years. Epigenetic modifications are the key mechanisms for BPA-induced metabolic re-programming, where BPA alters the expression of DNA methyltransferases involved in methylation of various genes. In this way, DNA methyltransferase controls the expression of numerous genes including genes important for insulin secretion and signaling. Furthermore, BPA induces histone modifications and alters miRNA expression. In this article, we have briefly described the sources of BPA exposure to human being and summarized the evidence from epidemiological studies linking DM with BPA exposure. Additionally, we have also highlighted the potential molecular pathways for BPA-induced DM.
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Affiliation(s)
| | - Shakila Sabir
- Department of Pharmaceutical Chemistry, Government College University Faisalabad, Pakistan
| | - Kanwal Rehman
- Department of Pharmacy, University Agriculture, Faisalabad, Pakistan.
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Wei Y, Li S, Han C, Bao Y, Shi W. Cuscuta chinensis flavonoids alleviate bisphenol A-induced apoptosis of testicular cells in male mice offspring. Andrologia 2019; 51:e13427. [PMID: 31583719 DOI: 10.1111/and.13427] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/02/2019] [Accepted: 08/12/2019] [Indexed: 12/12/2022] Open
Abstract
Bisphenol A (BPA) is a widespread environmental endocrine disruptor that has multiple effects on reproductive organ development. To investigate the effect of Cuscuta chinensis flavonoids (CCFs) on testicular apoptosis induced by BPA in male mice offspring, pregnant mice were administered intragastrically with BPA and CCF at gestation day (GD) 0.5-17.5. The testes of male offspring (F1 males) were collected at post-natal day (PND) 21 and PND 56 for the detection of related indicators. The results showed that compared with the BPA group, the testicular index in CCF groups was significantly increased at PND 21 (p < .01). For the mice of different concentrations of CCF groups, the expression levels of bax, caspase-9 and caspase-7 proteins were significantly decreased at PND 21 and PND 56, while the expression level of bcl-2 protein was significantly increased, and testicular apoptotic cells were also decreased significantly (p < .01 or p < .05). Forty mg/kg CCF has no significant difference compared with the control group. The results indicated that CCF could protect the testis development of F1 male mice by alleviating the apoptosis of testicular cells induced by BPA.
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Affiliation(s)
- Yuanyuan Wei
- Institute of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei, Baoding, China
| | - Shuying Li
- Institute of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei, Baoding, China
| | - Chao Han
- Institute of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei, Baoding, China
| | - Yongzhan Bao
- Institute of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei, Baoding, China.,Hebei Provincial Engineering Center for Chinese Veterinary Herbal Medicine, Baoding, China
| | - Wanyu Shi
- Institute of Traditional Chinese Veterinary Medicine, Agricultural University of Hebei, Baoding, China.,Hebei Provincial Engineering Center for Chinese Veterinary Herbal Medicine, Baoding, China
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Hui L, Li H, Lu G, Chen Z, Sun W, Shi Y, Fu Z, Huang B, Zhu X, Lu W, Xia D, Wu Y. Low Dose of Bisphenol A Modulates Ovarian Cancer Gene Expression Profile and Promotes Epithelial to Mesenchymal Transition Via Canonical Wnt Pathway. Toxicol Sci 2019; 164:527-538. [PMID: 29718440 DOI: 10.1093/toxsci/kfy107] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The xenoestrogen bisphenol A (BPA) is a synthetic endocrine disrupting chemical, having the potential to increase the risk of hormone-dependent ovarian cancer. Thus, a deeper understanding of the molecular and cellular mechanisms is urgently required in the novel cell models of ovarian cancer which express estrogen receptors. To understand the possible mechanisms underlying the effects of BPA, human ovarian adenocarcinoma SKOV3 cells were exposed to BPA (10 or 100 nM) or 0.1% DMSO for 24 h, and then global gene expression profile was determined by high-throughput RNA sequencing. Also, enrichment analysis was carried out to find out relevant functions and pathways within which differentially expressed genes were significantly enriched. Transcriptomic analysis revealed 94 differential expression genes. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses indicated that these genes related to tumorigenesis and metastasis. Further studies were carried out to validate the results of functional annotation, which indicated that BPA (10 and 100 nM) increased migration and invasion as well as induced epithelial to mesenchymal transitions in SKOV3 and A2780 cells. Accordingly, environmentally relevant-dose BPA activated the canonical Wnt signaling pathway. Our study first comprehensively analyzed the possible mechanisms underlying the effects of BPA on ovarian cancer. Environmentally relevant doses of BPA modulated the gene expression profile, promoted epithelial to mesenchymal transition progress via canonical Wnt signaling pathway of ovarian cancer.
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Affiliation(s)
- Lin Hui
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Hongyi Li
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Guang Lu
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 119077, Singapore
| | - Zhifeng Chen
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Wenjie Sun
- Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yu Shi
- Key Laboratory of Diagnosis and Treatment for Infectious Disease, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China
| | - Zhiqin Fu
- Department of Gynecologic Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, 310022, China
| | - Bo Huang
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Xinqiang Zhu
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Weiguo Lu
- Department of Gynecologic Oncology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310006, China
| | - Dajing Xia
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yihua Wu
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
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Sakib S, Goldsmith T, Voigt A, Dobrinski I. Testicular organoids to study cell-cell interactions in the mammalian testis. Andrology 2019; 8:835-841. [PMID: 31328437 DOI: 10.1111/andr.12680] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/03/2019] [Accepted: 06/19/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Over the last ten years, three-dimensional organoid culture has garnered renewed interest, as organoids generated from primary cells or stem cells with cell associations and functions similar to organs in vivo can be a powerful tool to study tissue-specific cell-cell interactions in vitro. Very recently, a few interesting approaches have been put forth for generating testicular organoids for studying the germ cell niche microenvironment. AIM To review different model systems that have been employed to study germ cell biology and testicular cell-cell interactions and discuss how the organoid approach can address some of the shortcomings of those systems. RESULTS AND CONCLUSION Testicular organoids that bear architectural and functional similarities to their in vivo counterparts are a powerful model system to study cell-cell interactions in the germ cell niche. Organoids enable studying samples in humans and other large animals where in vivo experiments are not possible, allow modeling of testicular disease and malignancies and may provide a platform to design more precise therapeutic interventions.
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Affiliation(s)
- S Sakib
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AL, Canada.,Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AL, Canada
| | - T Goldsmith
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AL, Canada.,Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AL, Canada
| | - A Voigt
- Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AL, Canada
| | - I Dobrinski
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AL, Canada.,Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AL, Canada
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Sakib S, Voigt A, Goldsmith T, Dobrinski I. Three-dimensional testicular organoids as novel in vitro models of testicular biology and toxicology. ENVIRONMENTAL EPIGENETICS 2019; 5:dvz011. [PMID: 31463083 PMCID: PMC6705190 DOI: 10.1093/eep/dvz011] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/06/2019] [Accepted: 07/03/2019] [Indexed: 05/05/2023]
Abstract
Organoids are three dimensional structures consisting of multiple cell types that recapitulate the cellular architecture and functionality of native organs. Over the last decade, the advent of organoid research has opened up many avenues for basic and translational studies. Following suit of other disciplines, research groups working in the field of male reproductive biology have started establishing and characterizing testicular organoids. The three-dimensional architectural and functional similarities of organoids to their tissue of origin facilitate study of complex cell interactions, tissue development and establishment of representative, scalable models for drug and toxicity screening. In this review, we discuss the current state of testicular organoid research, their advantages over conventional monolayer culture and their potential applications in the field of reproductive biology and toxicology.
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Affiliation(s)
- Sadman Sakib
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Anna Voigt
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Taylor Goldsmith
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Ina Dobrinski
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
- Correspondence address. Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Room 404, Heritage Medical Research Building, 3300 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada. Tel: 4032106523; Fax: 4032108821; E-mail:
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González-Rojo S, Lombó M, Fernández-Díez C, Herráez MP. Male exposure to bisphenol a impairs spermatogenesis and triggers histone hyperacetylation in zebrafish testes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 248:368-379. [PMID: 30818116 DOI: 10.1016/j.envpol.2019.01.127] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 05/18/2023]
Abstract
Bisphenol A (BPA) is an endocrine disruptor whose ubiquitous presence in the environment has been related with impairment of male reproduction. BPA can cause both transcriptomic and epigenetic changes during spermatogenesis. To evaluate the potential effects of male exposure to BPA, adult zebrafish males were exposed during spermatogenesis to doses of 100 and 2000 μg/L, which were reported in contaminated water bodies and higher than those allowed for human consumption. Fertilization capacity and survival at hatching were analysed after mating with untreated females. Spermatogenic progress was analysed through a morphometrical study of testes and apoptosis was evaluated by TUNEL assay. Testicular gene expression was evaluated by RT-qPCR and epigenetics by using ELISA and immunocytochemistry. In vitro studies were performed to investigate the role of Gper. Chromatin fragmentation and the presence of transcripts were also evaluated in ejaculated sperm. Results on testes from males treated with the highest dose showed a significant decrease in spermatocytes, an increase in apoptosis, a downregulation of ccnb1 and sycp3, all of which point to an alteration of spermatogenesis and to meiotic arrest and an upregulation of gper1 and esrrga receptors. Additionally, BPA at 2000 μg/L caused missregulation of epigenetic remodelling enzymes transcripts in testes and promoted DNA hypermethylation and H3K27me3 demethylation. BPA also triggered an increase in histone acetyltransferase activity, which led to hyperacetylation of histones (H3K9ac, H3K14ac, H4K12ac). In vitro reversion of histone acetylation changes using a specific GPER antagonist, G-36, suggested this receptor as mediator of histone hyperacetylation. Males treated with the lower dose only showed an increase in some histone acetylation marks (H3K14ac, H4K12ac) but their progeny displayed very limited survival at hatching, revealing the deleterious effects of unbalanced paternal epigenetic information. Furthermore, the highest dose of BPA led to chromatin fragmentation, promoting direct reproductive effects, which are incompatible with embryo development.
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Affiliation(s)
- S González-Rojo
- Department of Molecular Biology, Faculty of Biology, Universidad de León, Campus de Veganaza s/n, León, 24071, Spain
| | - M Lombó
- Department of Molecular Biology, Faculty of Biology, Universidad de León, Campus de Veganaza s/n, León, 24071, Spain
| | - C Fernández-Díez
- Department of Molecular Biology, Faculty of Biology, Universidad de León, Campus de Veganaza s/n, León, 24071, Spain
| | - M P Herráez
- Department of Molecular Biology, Faculty of Biology, Universidad de León, Campus de Veganaza s/n, León, 24071, Spain.
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Pérez-Patiño C, Parrilla I, Li J, Barranco I, Martínez EA, Rodriguez-Martínez H, Roca J. The Proteome of Pig Spermatozoa Is Remodeled During Ejaculation. Mol Cell Proteomics 2019; 18:41-50. [PMID: 30257877 PMCID: PMC6317480 DOI: 10.1074/mcp.ra118.000840] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/05/2018] [Indexed: 12/16/2022] Open
Abstract
Proteins are essential for sperm function, including their fertilizing capacity. Pig spermatozoa, emitted in well-defined ejaculate fractions, vary in their functionality, which could be related to different sperm protein composition. This study aimed (i) to update the porcine sperm proteome and (ii) to identify proteins differentially expressed in mature spermatozoa from cauda epididymis and those delivered in separate ejaculate fractions. Ejaculates from nine mature and fertile boars were manually collected in three separate portions: the first 10 ml of the sperm-rich ejaculate fraction (SRF), the rest of the SRF and the post-SRF. The contents of cauda epididymides of the boars were collected post-mortem by retrograde duct perfusion, generating four different semen sources for each boar. Following centrifugation, the resulting pellets of each semen source were initially pooled and later split to generate two technical replicates per source. The resulting eight sperm samples (two per semen source) were subjected to iTRAQ-based 2D-LC-MS/MS for protein identification and quantification. A total of 1,723 proteins were identified (974 of Sus scrofa taxonomy) and 1,602 of them were also quantified (960 of Sus scrofa taxonomy). After an ANOVA test, 32 Sus scrofa proteins showed quantitative differences (p < 0.01) among semen sources, which was particularly relevant for sperm functionality in the post-SRF. The present study showed that the proteome of boar spermatozoa is remodeled during ejaculation involving proteins clearly implicated in sperm function. The findings provide valuable groundwork for further studies focused on identifying protein biomarkers of sperm fertility.
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Affiliation(s)
- Cristina Pérez-Patiño
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain
| | - Inmaculada Parrilla
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain
| | - Junwei Li
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain
| | - Isabel Barranco
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain
| | - Emilio A Martínez
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain
| | | | - Jordi Roca
- From the ‡Department of Medicine and Animal Surgery, Faculty of Veterinary Science, University of Murcia, Spain;.
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