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Thapliyal A, Tomar AK, Naglot S, Dhiman S, Datta SK, Sharma JB, Singh N, Yadav S. Exploring Differentially Expressed Sperm miRNAs in Idiopathic Recurrent Pregnancy Loss and Their Association with Early Embryonic Development. Noncoding RNA 2024; 10:41. [PMID: 39051375 PMCID: PMC11270218 DOI: 10.3390/ncrna10040041] [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: 06/26/2024] [Revised: 07/14/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024] Open
Abstract
The high incidence of idiopathic recurrent pregnancy loss (iRPL) may stem from the limited research on male contributory factors. Many studies suggest that sperm DNA fragmentation and oxidative stress contribute to iRPL, but their roles are still debated. MicroRNAs (miRNAs) are short non-coding RNAs that regulate various biological processes by modulating gene expression. While differential expression of specific miRNAs has been observed in women suffering from recurrent miscarriages, paternal miRNAs remain unexplored. We hypothesize that analyzing sperm miRNAs can provide crucial insights into the pathophysiology of iRPL. Therefore, this study aims to identify dysregulated miRNAs in the spermatozoa of male partners of iRPL patients. Total mRNA was extracted from sperm samples of iRPL and control groups, followed by miRNA library preparation and high-output miRNA sequencing. Subsequently, raw sequence reads were processed for differential expression analysis, target prediction, and bioinformatics analysis. Twelve differentially expressed miRNAs were identified in the iRPL group, with eight miRNAs upregulated (hsa-miR-4454, hsa-miR-142-3p, hsa-miR-145-5p, hsa-miR-1290, hsa-miR-1246, hsa-miR-7977, hsa-miR-449c-5p, and hsa-miR-92b-3p) and four downregulated (hsa-miR-29c-3p, hsa-miR-30b-5p, hsa-miR-519a-2-5p, and hsa-miR-520b-5p). Functional enrichment analysis revealed that gene targets of the upregulated miRNAs are involved in various biological processes closely associated with sperm quality and embryonic development.
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Affiliation(s)
- Ayushi Thapliyal
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Anil Kumar Tomar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sarla Naglot
- Division of Reproductive, Child Health and Nutrition, Indian Council of Medical Research (ICMR), New Delhi 110029, India
| | - Soniya Dhiman
- Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sudip Kumar Datta
- Department of Laboratory Medicine, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Jai Bhagwan Sharma
- Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Neeta Singh
- Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Savita Yadav
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
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2
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Kyrgiafini MA, Giannoulis T, Chatziparasidou A, Christoforidis N, Mamuris Z. Unveiling the Genetic Complexity of Teratozoospermia: Integrated Genomic Analysis Reveals Novel Insights into lncRNAs' Role in Male Infertility. Int J Mol Sci 2023; 24:15002. [PMID: 37834450 PMCID: PMC10573971 DOI: 10.3390/ijms241915002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Male infertility is a global health issue, affecting over 20 million men worldwide. Genetic factors are crucial in various male infertility forms, including teratozoospermia. Nonetheless, the genetic causes of male infertility remain largely unexplored. In this study, we employed whole-genome sequencing and RNA expression analysis to detect differentially expressed (DE) long-noncoding RNAs (lncRNAs) in teratozoospermia, along with mutations that are exclusive to teratozoospermic individuals within these DE lncRNAs regions. Bioinformatic tools were used to assess variants' impact on lncRNA structure, function, and lncRNA-miRNA interactions. Our analysis identified 1166 unique mutations in teratozoospermic men within DE lncRNAs, distinguishing them from normozoospermic men. Among these, 64 variants in 23 lncRNAs showed potential regulatory roles, 7 variants affected 4 lncRNA structures, while 37 variants in 17 lncRNAs caused miRNA target loss or gain. Pathway Enrichment and Gene Ontology analyses of the genes targeted by the affected miRNAs revealed dysregulated pathways in teratozoospermia and a link between male infertility and cancer. This study lists novel variants and lncRNAs associated for the first time with teratozoospermia. These findings pave the way for future studies aiming to enhance diagnosis and therapy in the field of male infertility.
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Affiliation(s)
- Maria-Anna Kyrgiafini
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500 Larissa, Greece
| | - Themistoklis Giannoulis
- Laboratory of Biology, Genetics and Bioinformatics, Department of Animal Sciences, University of Thessaly, Gaiopolis, 41336 Larissa, Greece
| | - Alexia Chatziparasidou
- Embryolab IVF Unit, St. 173-175 Ethnikis Antistaseos, Kalamaria, 55134 Thessaloniki, Greece
| | | | - Zissis Mamuris
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500 Larissa, Greece
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Anwer Ahmed A, J Khaleel K, Abbas Fadhel A. Potential effect of Imatinib on some sex hormones for male patients of Chronic Myelogenous Leukemia in Baghdad province. BIONATURA 2021. [DOI: 10.21931/rb/2021.06.04.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Imatinib Mesylate is an oral chemotherapy drug that has been used to treat Chronic Myelogenous Leukemia (CML). It works as an inhibitor of oncogene tyrosine kinase BCR-ABLI as a target therapeutic agent. Despite the drug is well tolerated in most patients, impaired testosterone production and Gynecomastia after therapy might happen. The current study aims to evaluate the impact of Imatinib Mesylate on sex hormones of CML male patients in Baghdad province. Blood specimens were collected from (42) CML patients aged 23 to 68 years who used Imatinib drug for more than two years, and (45) normal persons aged 25 to 65 years as a control group. Exclusion criteria were performed for both control and CML patient's groups, including people with diabetes, hypertensive, and males complaining of infertility after taking medical history for every participant. The blood level of hemoglobin (Hb), white blood cells (WBC), platelet count, testosterone, LH, and FSH were evaluated and investigated. The obtained results showed a significantly lower level of testosterone (2.73+- 0.97) ng/mL than the control group (4.72 ±1.02) ng/mL with a p-value of 0.000. While LH (4.53±2.1) mIU/mL and FSH (5.12 ± 2.83) mIU/mL were significantly higher than the control group (3.77± 0.8) mIU/mL and (3.85±0.807) mIU/mL with p-value of 0.026 and 0.005 respectively. Moreover, the outcomes revealed a moderate positive correlation (r = +0.348) between LH hormone levels with a duration increasing time of using Imatinib, while platelet showed a moderate negative correlation (r = -0.321) with time-consuming using that drug. In conclusion, Imatinib might harm testis functions and some hematological parameters that could increase using this drug.
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Affiliation(s)
- Abeer Anwer Ahmed
- Iraqi Center for cancer and medical genetics research// Al-Mustansiriyah University, Iraq
| | - Khaleed J Khaleel
- Iraqi Center for cancer and medical genetics research// Al-Mustansiriyah University, Iraq
| | - Alaa Abbas Fadhel
- Al- Mussaib Technical College / Al-Furat Al-Awsat Technical University, 51009, Babylon, Iraq
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Chen X, Li Y, Dai H, Zhang H, Wan D, Zhou X, Situ C, Zhu H. Cyclin-dependent kinase 7 is essential for spermatogenesis by regulating retinoic acid signaling pathways and the STAT3 molecular pathway. IUBMB Life 2021; 73:1446-1459. [PMID: 34717033 DOI: 10.1002/iub.2574] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 10/20/2021] [Indexed: 12/28/2022]
Abstract
Spermatogenesis is a complex process that requires precise regulation. Phosphorylation plays a role in spermatogenesis by regulating protein structure and activity. This study focused on cyclin-dependent kinase 7 (CDK7), and explored its function and molecular mechanisms in spermatogenesis in vitro in a cell line and in vivo in a mouse model. Inhibition of CDK7 activity affected spermatogonia proliferation and differentiation, and we found that CDK7 regulates retinoic acid (RA)-mediated c-KIT expression to play a role in spermatogonia. Then, we demonstrated that inhibition of CDK7 affected meiosis initiation, DNA repair, and synaptonemal complex formation in meiosis progression, and CDK7 played this role by regulating RA-mediated STRA8 and REC8 signaling pathways. Moreover, inhibition of CDK7 impacted spermatid differentiation and resulted in decreased counts, decreased motility, and increased head deformity of sperm. We demonstrated that CDK7 affects germ cell apoptosis and sperm motility by activating STAT3 and that STAT3 further regulates Cortactin expression to influence the nuclear elongation, chromatin condensation, and acrosome formation of sperm. Additionally, EP300 was identified as another potential target phosphorylated by CDK7 that participates in chromatin condensation. Our results demonstrated the important role of CDK7 in all key aspects of spermatogenesis, potentially providing an effective target for clinical diagnosis and pathogenesis.
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Affiliation(s)
- Xu Chen
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Yan Li
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Haiqian Dai
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Hao Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Danyang Wan
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Xinli Zhou
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Chenghao Situ
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Hui Zhu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
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Teves ME, Roldan ERS, Krapf D, Strauss III JF, Bhagat V, Sapao P. Sperm Differentiation: The Role of Trafficking of Proteins. Int J Mol Sci 2020; 21:E3702. [PMID: 32456358 PMCID: PMC7279445 DOI: 10.3390/ijms21103702] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/10/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022] Open
Abstract
Sperm differentiation encompasses a complex sequence of morphological changes that takes place in the seminiferous epithelium. In this process, haploid round spermatids undergo substantial structural and functional alterations, resulting in highly polarized sperm. Hallmark changes during the differentiation process include the formation of new organelles, chromatin condensation and nuclear shaping, elimination of residual cytoplasm, and assembly of the sperm flagella. To achieve these transformations, spermatids have unique mechanisms for protein trafficking that operate in a coordinated fashion. Microtubules and filaments of actin are the main tracks used to facilitate the transport mechanisms, assisted by motor and non-motor proteins, for delivery of vesicular and non-vesicular cargos to specific sites. This review integrates recent findings regarding the role of protein trafficking in sperm differentiation. Although a complete characterization of the interactome of proteins involved in these temporal and spatial processes is not yet known, we propose a model based on the current literature as a framework for future investigations.
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Affiliation(s)
- Maria E. Teves
- Department of Obstetrics and Gynecology, Virginia Commonwealth University, Richmond VA 23298, USA;
| | - Eduardo R. S. Roldan
- Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (CSIC), 28006-Madrid, Spain
| | - Diego Krapf
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA;
| | - Jerome F. Strauss III
- Department of Obstetrics and Gynecology, Virginia Commonwealth University, Richmond VA 23298, USA;
| | - Virali Bhagat
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond VA 23298, USA;
| | - Paulene Sapao
- Department of Chemistry, Virginia Commonwealth University, Richmond VA, 23298, USA;
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Alvarez-Palomo B, Barrot-Feixat C, Sarret H, Requena J, Pau M, Vidal-Taboada JM, Oliva R, Ballesca JL, Edel MJ, Mezquita-Pla J. Two novel ligand-independent variants of the VEGFR-1 receptor are expressed in human testis and spermatozoa, one of them with the ability to activate SRC proto-oncogene tyrosine kinases. Oncotarget 2019; 10:5871-5887. [PMID: 31645906 PMCID: PMC6791376 DOI: 10.18632/oncotarget.27232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/24/2019] [Indexed: 11/25/2022] Open
Abstract
The vascular endothelial growth factor receptor 1 (VEGFR-1) family of receptors is preferentially expressed in endothelial cells, with the full-length and mostly the soluble (sVEGFR-1) isoforms being the most expressed ones. Surprisingly, cancer cells (MDA-MB-231) express, instead, alternative intracellular VEGFR-1 variants. We wondered if these variants, that are no longer dependent on ligands for activation, were expressed in a physiological context, specifically in spermatogenic cells, and whether their expression was maintained in spermatozoa and required for human fertility. By interrogating a human library of mature testis cDNA, we characterized two new truncated intracellular variants different from the ones previously described in cancer cells. The new isoforms were transcribed from alternative transcription start sites (aTSS) located respectively in intron-19 (i19VEGFR-1) and intron-28 (i28VEGFR-1) of the VEGFR-1 gene (GenBank accession numbers JF509744 and JF509745) and expressed in mature testis and spermatozoa. In this paper, we describe the characterization of these isoforms by RT-PCR, northern blot, and western blot, their preferential expression in human mature testis and spermatozoa, and the elements that punctuate their proximal promoters and suggest cues for their expression in spermatogenic cells. Mechanistically, we show that i19VEGFR-1 has a strong ability to phosphorylate and activate SRC proto-oncogene non-receptor tyrosine kinases and a significant bias toward a decrease in expression in patients considered infertile by WHO criteria.
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Affiliation(s)
- Belen Alvarez-Palomo
- Molecular Genetics and Control of Pluripotency Laboratory, Department of Biomedicine, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
| | - Carme Barrot-Feixat
- Forensic Genetics Laboratory, Medicine Department, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
| | - Helena Sarret
- Molecular Genetics and Control of Pluripotency Laboratory, Department of Biomedicine, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
| | - Jordi Requena
- Molecular Genetics and Control of Pluripotency Laboratory, Department of Biomedicine, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
| | - Montserrat Pau
- Molecular Genetics Laboratory, Department of Biomedicine, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
| | - Jose-Manuel Vidal-Taboada
- Peripheral Nervous System, Neuroscience Department, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain
| | - Rafael Oliva
- Molecular Biology of Reproduction and Development Laboratory, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Department of Biomedicine, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain.,Biochemistry and Molecular Genetics Service, Biomedical Diagnostic Centre, Hospital Clinic, Barcelona, Catalonia, Spain
| | - Josep-Lluis Ballesca
- Clinic Institute of Gynaecology, Obstetrics and Neonatology, Hospital Clinic, Barcelona, Catalonia, Spain
| | - Michael J Edel
- Molecular Genetics and Control of Pluripotency Laboratory, Department of Biomedicine, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain.,International Research Fellow, Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia.,Senior Research Fellow, University of Western Australia, School of Medicine and Pharmacology, Harry Perkins Research Institute Centre for Cell Therapy and Regenerative Medicine (CCTRM), Perth, Western Australia, Australia
| | - Jovita Mezquita-Pla
- Molecular Genetics and Control of Pluripotency Laboratory, Department of Biomedicine, Biomedical Research Institute August Pi i Sunyer (IDIBAPS), Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Catalonia, Spain
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Khawar MB, Gao H, Li W. Mechanism of Acrosome Biogenesis in Mammals. Front Cell Dev Biol 2019; 7:195. [PMID: 31620437 PMCID: PMC6759486 DOI: 10.3389/fcell.2019.00195] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/29/2019] [Indexed: 11/13/2022] Open
Abstract
During sexual reproduction, two haploid gametes fuse to form the zygote, and the acrosome is essential to this fusion process (fertilization) in animals. The acrosome is a special kind of organelle with a cap-like structure that covers the anterior portion of the head of the spermatozoon. The acrosome is derived from the Golgi apparatus and contains digestive enzymes. With the progress of our understanding of acrosome biogenesis, a number of models have been proposed to address the origin of the acrosome. The acrosome has been regarded as a lysosome-related organelle, and it has been proposed to have originated from the lysosome or the autolysosome. Our review will provide a brief historical overview and highlight recent findings on acrosome biogenesis in mammals.
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Affiliation(s)
- Muhammad Babar Khawar
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hui Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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Xiao X, Yang Y, Mao B, Cheng CY, Ni Y. Emerging role for SRC family kinases in junction dynamics during spermatogenesis. Reproduction 2019; 157:R85-R94. [PMID: 30608903 PMCID: PMC6602873 DOI: 10.1530/rep-18-0440] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/03/2019] [Indexed: 12/22/2022]
Abstract
SRC family kinases (SFKs) are known regulators of multiple cellular events, including cell movement, differentiation, proliferation, survival and apoptosis. SFKs are expressed virtually by all mammalian cells. They are non-receptor protein kinases that phosphorylate a variety of cellular proteins on tyrosine, leading to the activation of protein targets in response to environmental stimuli. Among SFKs, SRC, YES and FYN are the ubiquitously expressed and best studied members. In fact, SRC, the prototypical SFK, was the first tyrosine kinase identified in mammalian cells. Studies have shown that SFKs are regulators of cell junctions, and function in endocytosis and membrane trafficking to regulate junction restructuring events. Herein, we briefly summarize the recent findings in the field regarding the role of SFKs in the testis in regulating spermatogenesis, particularly in Sertoli-Sertoli and Sertoli-germ cell adhesion. While it is almost 50 years since the identification of the oncogene v-Src encoded by Rous sarcoma transforming virus, the understanding of SFK involvement during spermatogenesis in the testis remains far behind that in other epithelia and tissues. The goal of this review is to bridge this gap.
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Affiliation(s)
- Xiang Xiao
- Department of Reproductive Physiology, Zhejiang Academy of Medical Sciences, Hangzhou 310013, Zhejiang, China
| | - Yue Yang
- Department of Reproductive Physiology, Zhejiang Academy of Medical Sciences, Hangzhou 310013, Zhejiang, China
| | - Baiping Mao
- The Mary M. Woldford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, 1230 York Ave, New York, NY 10065, United States
| | - C. Yan Cheng
- The Mary M. Woldford Laboratory for Male Contraceptive Research, Center for Biomedical Research, Population Council, 1230 York Ave, New York, NY 10065, United States
| | - Ya Ni
- Department of Reproductive Physiology, Zhejiang Academy of Medical Sciences, Hangzhou 310013, Zhejiang, China
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Raman S, Sherlin HJ. Utility of smooth muscle actin and CD117 as reliable markers in the diagnosis of salivary gland neoplasms. J Oral Maxillofac Pathol 2019; 23:218-223. [PMID: 31516227 PMCID: PMC6714258 DOI: 10.4103/jomfp.jomfp_225_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Objective: The aim of this study is to analyze the utility of immunohistochemical markers such as CD117 and smooth muscle actin (SMA) in the diagnosis of various benign and malignant salivary gland neoplasms. Materials and Methods: The study comprises 17 samples categorized into three groups: Group I consisted of 5 histopathologically normal salivary gland tissue; Group II comprised 7 cases, of which 3 cases were pleomorphic adenoma, 3 cases were myoepithelioma and 1 case was Warthin's tumor; and Group III consisted of 5 cases, of which 1 was mucoepidermoid carcinoma and 4 cases were adenoid cystic carcinoma. The selected cases were subjected to immunohistochemistry (IHC) procedure to assess the expression pattern of CD117 and SMA. Results: In SMA, 85.8% showed severe-to-moderate intense expression among the tumor cells in benign salivary gland tumor. All the 5 malignant tumors showed the expression of SMA and 3 cases demonstrated severe expression among the tumor cells. An intense expression pattern of SMA was observed in both benign and malignant neoplasms in the periphery and stromal components of the tumor. Only two cases were positive for CD117, and connective tissue components were completely negative in both malignant and benign salivary gland neoplasms. Conclusion: Alpha-SMA can be utilized as reliable IHC markers for salivary gland neoplasms due to its diagnostic importance in tumors with myoepithelial origin indicative of the histogenesis of salivary gland tumors.
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Affiliation(s)
- Subhasri Raman
- Department of Oral Pathology, Saveetha Dental College and Hospitals, SIMATS, Chennai, Tamil Nadu, India
| | - Herald J Sherlin
- Department of Oral Pathology, Saveetha Dental College and Hospitals, SIMATS, Chennai, Tamil Nadu, India
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Tariq H, Anjum S, Din HU, Akhtar F. Diagnostic utility of C-kit protein (CD117) expression in differentiating adenoid cystic carcinoma and polymorphous low grade Adenocarcinoma. Pak J Med Sci 2017; 33:1376-1380. [PMID: 29492062 PMCID: PMC5768828 DOI: 10.12669/pjms.336.13373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background & Objective: To evaluate usefulness of immunohistochemical marker C-kit (CD117) in differentiating Adenoid cystic carcinoma (AdCC) from Polymorphous low-grade adenocarcinoma (PLGA) in patients of salivary gland carcinomas. AdCC is a malignant salivary gland neoplasm with poor prognosis. PLGA is a salivary gland malignancy with indolent growth pattern. Differentiating between the two entities is a diagnostic challenge. We evaluated the role of C-kit in differentiating the two. Methods: This is a Cross sectional study. Samples of 19 tumors including 12 AdCC and 4 PLGA was evaluated at Department of Histopathology, Armed Forces Institute of Pathology, Rawalpindi from December 2015 to August 2016. Immunohistochemical techniques were used to analyze the level of c-kit expression in AdCC (n = 12), polymorphous low-grade adenocarcinoma (PLGA) (n = 6). Samples were stained using monoclonal antibody against C-kit. Statistical analysis of the data was done using SPSS version 21. Results: Strong diffuse cytoplasmic reactivity was observed in more than 50% of the tumor cells of AdCC whereas less than 20% of cells showed negative to weak positivity in PLGA. Hence, the difference in the expression of c-kit between AdCC and PLGA was statistically significant (p value <0.002). Conclusions: CD117 expression itself can be used as a marker in differential diagnosis of salivary gland neoplasms. However, the percentage of the CD117 immunoreactive cells and the staining intensities appeared to be important factors in distinguishing AdCC from PLGA.
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Affiliation(s)
- Hassan Tariq
- Dr. Hassan Tariq, MBBS. Department of Histopathology, Armed Forces Institute of Pathology, PNS Shifa, Rawalpindi, Pakistan
| | - Saba Anjum
- Dr. Saba Farrukh, MBBS. Department of Histopathology, Armed Forces Institute of Pathology, PNS Shifa, Rawalpindi, Pakistan
| | - Hafeez Ud Din
- Dr. Hafeez ud Din, FCPS. Assistant Professor, Department of Histopathology, Armed Forces Institute of Pathology, PNS Shifa, Rawalpindi, Pakistan
| | - Farhan Akhtar
- Dr. Farhan Akhtar, FCPS. Assistant Professor Department of Histopathology, Armed Forces Institute of Pathology, PNS Shifa, Rawalpindi, Pakistan
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Cengiz Seval G, Özkavukçu S, Seval M, Aylı M. Gonadotoxic Effects of Nilotinib in Chronic Myeloid Leukemia Treatment Dose in a Mouse Model. Turk J Haematol 2016; 34:137-142. [PMID: 27466938 PMCID: PMC5440865 DOI: 10.4274/tjh.2016.0092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objective: Tyrosine kinase inhibitors may have deleterious effects on spermatogenesis or folliculogenesis, resulting in male or female subfertility. The aim of this study is to determine the effect of nilotinib, which is used routinely to treat chronic myeloid leukemia, on spermatogenesis and folliculogenesis by using histopathological parameters. Materials and Methods: Ten male and ten female mice were orally treated with nilotinib at 20 mg/kg body weight dissolved in drinking water daily for 2 months. Results: When compared with the control group, a statistically significant decrease was demonstrated in the total follicle numbers of the female mice in the nilotinib group (268±110 vs. 170±60; p=0.03). Active spermatogenesis was observed in each tubule sample taken from the mice in the control and nilotinib groups. Spermatogenic activity was similar in the two groups. Conclusion: We have demonstrated that even though spermatogenesis is preserved, folliculogenesis is inhibited by the usage of a continuous nilotinib treatment dose in chronic myeloid leukemia.
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Affiliation(s)
- Güldane Cengiz Seval
- Ufuk University Faculty of Medicine, Department of Hematology, Ankara, Turkey E-mail:
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12
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Nicolini FE, Alcazer V, Huguet F, Cony-Makhoul P, Heiblig M, Fort MP, Morisset S, Guerci-Bresler A, Soula V, Sobh M, d'Estaing SG, Daudin M, Etienne G. CML patients show sperm alterations at diagnosis that are not improved with imatinib treatment. Leuk Res 2016; 48:80-3. [PMID: 27501271 DOI: 10.1016/j.leukres.2016.07.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/12/2016] [Accepted: 07/21/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Franck-Emmanuel Nicolini
- Hematology Department 1G, Centre Hospitalier Lyon Sud, Pierre Bénite, France; INSERM U1052, Centre de Recherche en Cancérologie de Lyon, Lyon, France; French Group of CML (Fi-LMC Group), Bordeaux, France.
| | - Vincent Alcazer
- Hematology Department 1G, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Françoise Huguet
- Hematology Department, Hôpital Purpan, Toulouse, France; French Group of CML (Fi-LMC Group), Bordeaux, France
| | - Pascale Cony-Makhoul
- Hematology Department, Centre Hospitalier d'Annecy-Genevois, Metz-Tessy, France; French group of CML (Fi-LMC group), Bordeaux, France
| | - Mael Heiblig
- Hematology Department 1G, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | | | - Stéphane Morisset
- Hematology Department 1G, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Agnès Guerci-Bresler
- Hematology Department, Hôpital de Brabois, Vandoeuvre-lès-Nancy, France; French Group of CML (Fi-LMC Group), Bordeaux, France
| | - Volcy Soula
- CECOS & service de biologie de la reproduction, Hôpital Pellegrin, Bordeaux, France
| | - Mohamad Sobh
- Hematology Department 1G, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | | | - Myriam Daudin
- CECOS, Groupe d'Activité de Médecine de la Reproduction, Hôpital Paule de Viguier, Toulouse, France
| | - Gabriel Etienne
- Hematology Department, Institut Bergonié, Bordeaux, France; French Group of CML (Fi-LMC Group), Bordeaux, France
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13
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Mapping of post-translational modifications of spermatid-specific linker histone H1-like protein, HILS1. J Proteomics 2015; 128:218-30. [PMID: 26257145 DOI: 10.1016/j.jprot.2015.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 07/31/2015] [Accepted: 08/01/2015] [Indexed: 12/29/2022]
Abstract
In mammalian spermiogenesis, haploid round spermatids undergo dramatic biochemical and morphological changes and transform into motile mature spermatozoa. A majority of the histones are replaced by transition proteins during mid-spermiogenesis and later replaced by protamines, which occupy the sperm chromatin. In mammals, 11 linker histone H1 subtypes have been reported. Among them, H1t, HILS1, and H1T2 are uniquely expressed in testis, with the expression of HILS1 and H1T2 restricted to spermiogenesis. However, there is a lack of knowledge about linker histone role in the nuclear reorganization during mammalian spermiogenesis. Here, we report a method for separation of endogenous HILS1 protein from other rat testis linker histones by reversed-phase high-performance liquid chromatography (RP-HPLC) and identification of 15 novel post-translational modifications of HILS1, which include lysine acetylation and serine/threonine/tyrosine phosphorylation sites. Immunofluorescence studies demonstrate the presence of linker histone HILS1 and HILS1Y78p during different steps of spermiogenesis from early elongating to condensing spermatids.
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Takemura S, Ichikawa H, Naito Y, Takagi T, Yoshikawa T, Minamiyama Y. S-allyl cysteine ameliorates the quality of sperm and provides protection from age-related sperm dysfunction and oxidative stress in rats. J Clin Biochem Nutr 2014; 55:155-61. [PMID: 25411519 PMCID: PMC4227827 DOI: 10.3164/jcbn.14-39] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 05/13/2014] [Indexed: 01/08/2023] Open
Abstract
Reactive oxygen species play a central role in the pathophysiology of the age-related decrease in male fertility. It has been reported that the total protein of DJ-1 was decreased in a proteomic analysis of seminal plasma from asthenozoospermia patients and a DJ-1 protein acts as a sensor of cellular redox homeostasis. Therefore, we evaluated the age-related changes in the ratio of the oxidized/reduced forms of the DJ-1 protein in the epididymis. In addition, the protective effects of S-allyl cysteine (SAC), a potent antioxidant, were evaluated against sperm dysfunction. Male rats aged 15–75 weeks were used to assess age-associated sperm function and oxidative stress. Sperm count increased until 25 weeks, but then decreased at 50 and 75 weeks. The rate of sperm movement at 75 weeks was decreased to approximately 60% of the rate observed at 25 weeks. Expression of DJ-1 decreased, but oxidized-DJ-1 increased with age. In addition, 4-hydroxy-2-nonenal modified proteins in the epididymis increased until 50 weeks of age. The total number and DNA synthetic potential of the sperm increased until 25 weeks, and then decreased. In rats 75 weeks of age, SAC (0.45% diet) attenuated the decrease in the number, motility, and DNA synthesis of sperm and inhibited the oxidized proteins. These results suggest that SAC ameliorates the quality of sperm subjected to age-associated oxidative stress.
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Affiliation(s)
- Shigekazu Takemura
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Hiroshi Ichikawa
- Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe-shi, Kyoto 610-0321, Japan
| | - Yuji Naito
- Department of Gastroenterology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tomohisa Takagi
- Department of Gastroenterology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Toshikazu Yoshikawa
- Department of Gastroenterology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Yukiko Minamiyama
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan ; Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
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15
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Salehinejad J, Mohtasham N, Bagherpour A, Abbaszadeh-bidokhty H, Ghazi A. Evaluation of c-kit protein (CD117) expression in common salivary gland neoplasms. J Oral Maxillofac Pathol 2014; 18:177-82. [PMID: 25328295 PMCID: PMC4196283 DOI: 10.4103/0973-029x.140732] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 07/09/2014] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Adenoid cystic carcinoma (AdCC) is a malignant salivary gland neoplasm with poor long-term prognosis. Differentiating between AdCC and other salivary gland neoplasms can be a diagnostic challenge, particularly in examining tissues obtained from small incisional biopsies. AIM The aim of this study was to evaluate c-kit expression in four common benign and malignant salivary gland neoplasms. MATERIALS AND METHODS Immunohistochemical techniques were used to analyze the level of c-kit expression in normal salivary gland (n = 10) and four different types of salivary gland tumors: Pleomorphic adenoma (PA) (n = 17), AdCC (n = 9), polymorphous low-grade adenocarcinoma (PLGA) (n = 4) and mucoepidermoid carcinoma (MEC) (n = 6). Samples were immunostained using monoclonal antibody against c-kit. RESULTS The immunoreactivity for c-kit was found in all cases of AdCC, PLGA and MEC and majority of PAs. Positive reactivity was observed in more than 50% of the tumor cells of AdCC and less than 50% in PLGA. PA did not show strong immunostaining and c-kit was predominantly localized to the cell membrane. Furthermore, the difference in the expression of c-kit between the benign and malignant neoplasms was not statistically significant. CONCLUSIONS CD117 expression itself cannot be used as a marker in differential diagnosis of salivary gland neoplasms. However, the percentage of the CD117 immunoreactive cells and the staining intensities appeared to be important factors in distinguishing AdCC from PLGA and PA.
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Affiliation(s)
- Jahanshah Salehinejad
- Department of Oral and Maxillofacial Pathology, Dental Research Centre, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Nooshin Mohtasham
- Department of Oral and Maxillofacial Pathology, Oral and Maxillofacial Diseases Research Centre, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Bagherpour
- Department of Oral and Maxillofacial Radiology, Dental Research Centre, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Abbaszadeh-bidokhty
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Babol University of Medical Sciences, Babol, Iran
| | - Ala Ghazi
- Department of Oral Medicine, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Li Y, Zhang Y, Zhang X, Sun J, Hao J. BMP4/Smad Signaling Pathway Induces the Differentiation of Mouse Spermatogonial Stem Cells via Upregulation of Sohlh2. Anat Rec (Hoboken) 2014; 297:749-57. [DOI: 10.1002/ar.22891] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 01/10/2014] [Indexed: 01/17/2023]
Affiliation(s)
- Yi Li
- Department of Histology and Embryology; School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University; Jinan 250012 People's Republic of China
- Obstetric Genetic Disease Laboratory; Maternal and Child Health Hospital of Zibo City; Zibo 255029 People's Republic of China
| | - Yuecun Zhang
- Department of Gynaecology and Obstetrics; Qilu Hospital, Shandong University; Jinan 250012 People's Republic of China
| | - Xiaoli Zhang
- Department of Histology and Embryology; School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University; Jinan 250012 People's Republic of China
| | - Jinhao Sun
- Department of Human Anatomy; School of Medicine; Shandong University; Jinan 250012 People's Republic of China
| | - Jing Hao
- Department of Histology and Embryology; School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University; Jinan 250012 People's Republic of China
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17
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Liang Y, Dong Y, Zhao J, Li W. YES1 activation elicited by heat stress is anti-apoptotic in mouse pachytene spermatocytes. Biol Reprod 2013; 89:131. [PMID: 24132961 DOI: 10.1095/biolreprod.113.112235] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Deregulated expression of protein tyrosine phosphorylation has been implicated in testicular response to different stimuli. Herein, YES1, a nonreceptor protein tyrosine kinase, was found to be significantly up-regulated in pachytene spermatocytes (PS) during early recovery from a transient testicular heat stress. Coculture of PS with Sertoli cells (SCs) could enhance the hyperthermia-induced YES1 activation, indicative of a positive regulation of the paracrine signaling. Moreover, SU6656, a selective YES1 inhibitor, was shown to effectively block YES1 activity, thereafter resulting in a dramatic increase of heat stress-induced apoptosis in primary cultured PS. Mechanistically, the antiapoptotic effect of YES1 activation in response to testicular heat insult may mediate via the regulation of extracellular signal-regulated kinase (ERK)/metastasis-associated 1 (MTA1) cascade. From a clinical standpoint, a notably higher level of YES1 expression was observed in the pathological testis from varicocele patients as compared to a negligible staining in the control group. Taken together, our present results provide the first evidence that the YES1/ERK/MTA1/p53 cascade may serve as a naturally occurring, indispensable self-defensive mechanism maintaining apoptotic balance during meiotic heat stress. Our study may have also partially answered the question of how activation of signal pathways at the cell membrane surface interacts with the key regulatory events occurring in the nucleus during testicular heat shock.
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Affiliation(s)
- Yuan Liang
- Department of Pathology and Pathophysiology, Fourth Military Medical University, Xi'an, People's Republic of China
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18
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Imatinib mesylate at therapeutic doses has no impact on folliculogenesis or spermatogenesis in a leukaemic mouse model. Leuk Res 2012; 36:271-4. [DOI: 10.1016/j.leukres.2011.09.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 09/11/2011] [Accepted: 09/22/2011] [Indexed: 11/23/2022]
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19
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Luo J, Gupta V, Kern B, Tash JS, Sanchez G, Blanco G, Kinsey WH. Role of FYN kinase in spermatogenesis: defects characteristic of Fyn-null sperm in mice. Biol Reprod 2012; 86:1-8. [PMID: 21918125 DOI: 10.1095/biolreprod.111.093864] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
FYN kinase is highly expressed in the testis and has been implicated in testis and sperm function, yet specific roles for this kinase in testis somatic and germ cells have not been defined. The purpose of the present investigation was to identify aspects of spermatogenesis, spermiation, or sperm fertilizing capacity that required FYN for normal reproductive function. Matings between Fyn-null males and wild-type females resulted in normal litter sizes, despite the fact that Fyn-null males exhibited reduced epididymal size and sperm count. Morphological analysis revealed a high frequency of abnormal sperm morphology among Fyn-null sperm, and artificial insemination competition studies demonstrated that Fyn-null sperm possessed reduced fertilizing capacity. Fyn-null sperm exhibited nearly normal motility during capacitation in vitro but reduced ability to undergo the acrosome reaction and fertilize oocytes. The typical pattern of capacitation-induced protein tyrosine phosphorylation was slightly modified in Fyn-null sperm, with reduced abundance of several minor phosphoproteins. These findings are consistent with a model in which FYN kinase plays an important role in proper shaping of the head and acrosome within the testis and possibly an additional role in the sperm acrosome reaction, events required for development of full fertilizing capacity in sperm.
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Affiliation(s)
- Jinping Luo
- Interdisciplinary Center for Male Contraceptive Research and Drug Development, University of Kansas Medical Center, Kansas City, USA
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20
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Bao J, Wang L, Lei J, Hu Y, Liu Y, Shen H, Yan W, Xu C. STK31(TDRD8) is dynamically regulated throughout mouse spermatogenesis and interacts with MIWI protein. Histochem Cell Biol 2011; 137:377-89. [PMID: 22205278 DOI: 10.1007/s00418-011-0897-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2011] [Indexed: 01/01/2023]
Abstract
Tudor-domain-containing proteins (TDRDs) are suggested to be critical regulators of germinal granules assembly involved in Piwi-interacting RNAs (piRNAs)-mediated pathways, of which associated components and the underlying functional mechanisms, however, remain to be elucidated. We herein characterized the expression pattern of STK31, a member of TDRDs subfamily (also termed as TDRD8), throughout spermatogenesis during mouse postnatal development. RT-PCR and Western blot verified its preferential expression in testis, but not in any other somatic tissues, in addition to embryonic stem cells. Immunofluorescent staining demonstrated that STK31 was confined to granules-like structures in mid-to-late spermatocyte cytoplasm and to acrosomal cap starting at steps 7-8 of spermatids. Furthermore, STK31 retained its localization to equatorial segment of acrosome during epididymal maturation, capacitation, and acrosome reaction. Co-immunoprecipitation assay in vivo and in vitro confirmed MIWI is a bona fide partner of STK31 in mice testes, in combination with LC/MS identification. We also discovered a group of heat shock proteins specifically associated with STK31 in vivo. Our findings suggest mouse STK31 could be a potential nuage-associated protein in the cytoplasm of mid-to-late spermatocytes and play pivotal roles related to fertilization.
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Affiliation(s)
- Jianqiang Bao
- Shanghai Key Laboratory for Reproductive Medicine, Department of Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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21
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McGinnis LK, Carroll DJ, Kinsey WH. Protein tyrosine kinase signaling during oocyte maturation and fertilization. Mol Reprod Dev 2011; 78:831-45. [PMID: 21681843 DOI: 10.1002/mrd.21326] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 04/30/2011] [Indexed: 11/11/2022]
Abstract
The oocyte is a highly specialized cell capable of accumulating and storing energy supplies as well as maternal transcripts and pre-positioned signal transduction components needed for zygotic development, undergoing meiosis under control of paracrine signals from the follicle, fusing with a single sperm during fertilization, and zygotic development. The oocyte accomplishes this diverse series of events by establishing an array of signal transduction pathway components that include a select collection of protein tyrosine kinases (PTKs) that are expressed at levels significantly higher than most other cell types. This array of PTKs includes cytosolic kinases such as SRC-family PTKs (FYN and YES), and FAK kinases, as well as FER. These kinases typically exhibit distinct patterns of localization and in some cases are translocated from one subcellular compartment to another during meiosis. Significant differences exist in the extent to which PTK-mediated pathways are used by oocytes from species that fertilize externally versus internally. The PTK activation profiles as well as calcium signaling pattern seems to correlate with the extent to which a rapid block to polyspermy is required by the biology of each species. Suppression of each of the SRC-family PTKs as well as FER kinase results in failure of meiotic maturation or zygote development, indicating that these PTKs are important for oocyte quality and developmental potential. Future studies will hopefully reveal the extent to which these factors impact clinical assisted reproductive techniques in domestic animals and humans.
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Affiliation(s)
- Lynda K McGinnis
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas 66160, USA.
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22
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Sun X, Kovacs T, Hu YJ, Yang WX. The role of actin and myosin during spermatogenesis. Mol Biol Rep 2010; 38:3993-4001. [DOI: 10.1007/s11033-010-0517-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Accepted: 11/13/2010] [Indexed: 01/08/2023]
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23
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Jha KN, Wong L, Zerfas PM, De Silva RS, Fan YX, Spiridonov NA, Johnson GR. Identification of a novel HSP70-binding cochaperone critical to HSP90-mediated activation of small serine/threonine kinase. J Biol Chem 2010; 285:35180-7. [PMID: 20829357 DOI: 10.1074/jbc.m110.134767] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We previously reported the identification of small serine/threonine kinase (SSTK) that is expressed in postmeiotic germ cells, associates with HSP90, and is indispensable for male fertility. Sperm from SSTK-null mice cannot fertilize eggs in vitro and are incapable of fusing with eggs that lack zona pellucida. Here, using the yeast two-hybrid screen, we have discovered a novel SSTK-interacting protein (SIP) that is expressed exclusively in testis. The gene encoding SIP is restricted to mammals and encodes a 125-amino acid polypeptide with a predicted tetratricopeptide repeat domain. SIP is co-localized with SSTK in the cytoplasm of spermatids as they undergo restructuring and chromatin condensation, but unlike SSTK, is not retained in the mature sperm. SIP binds to SSTK with high affinity (K(d) ∼10 nM), and the proteins associate with each other when co-expressed in cells. In vitro, SIP inhibited SSTK kinase activity, whereas the presence of SIP in cells resulted in enzymatic activation of SSTK without affecting Akt or MAPK activity. SIP was found to be associated with cellular HSP70, and analyses with purified proteins revealed that SIP directly bound HSP70. Importantly, SSTK recruited SIP onto HSP90, and treatment of cells with the specific HSP90 inhibitor, 17-allylamino-17-demethoxygeldanamycin, completely abolished SSTK catalytic activity. Hence, these findings demonstrate that HSP90 is essential for functional maturation of the kinase and identify SIP as a cochaperone that is critical to the HSP90-mediated activation of SSTK.
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Affiliation(s)
- Kula N Jha
- Laboratory of Chemistry, Division of Therapeutic Proteins, Center for Drug Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA
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24
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Hermo L, Pelletier RM, Cyr DG, Smith CE. Surfing the wave, cycle, life history, and genes/proteins expressed by testicular germ cells. Part 2: changes in spermatid organelles associated with development of spermatozoa. Microsc Res Tech 2010; 73:279-319. [PMID: 19941292 DOI: 10.1002/jemt.20787] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Spermiogenesis is a long process whereby haploid spermatids derived from the meiotic divisions of spermatocytes undergo metamorphosis into spermatozoa. It is subdivided into distinct steps with 19 being identified in rats, 16 in mouse and 8 in humans. Spermiogenesis extends over 22.7 days in rats and 21.6 days in humans. In this part, we review several key events that take place during the development of spermatids from a structural and functional point of view. During early spermiogenesis, the Golgi apparatus forms the acrosome, a lysosome-like membrane bound organelle involved in fertilization. The endoplasmic reticulum undergoes several topographical and structural modifications including the formation of the radial body and annulate lamellae. The chromatoid body is fully developed and undergoes structural and functional modifications at this time. It is suspected to be involved in RNA storing and processing. The shape of the spermatid head undergoes extensive structural changes that are species-specific, and the nuclear chromatin becomes compacted to accommodate the stream-lined appearance of the sperm head. Microtubules become organized to form a curtain or manchette that associates with spermatids at specific steps of their development. It is involved in maintenance of the sperm head shape and trafficking of proteins in the spermatid cytoplasm. During spermiogenesis, many genes/proteins have been implicated in the diverse dynamic events occurring at this time of development of germ cells and the absence of some of these have been shown to result in subfertility or infertility.
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Affiliation(s)
- Louis Hermo
- Faculty of Medicine, Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada H3A 2B2.
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25
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Tanriover G, Sati L, Tekcan M, Demir N, Gunel M, Celik-Ozenci C. Presence of the brain proteins cerebral cavernous malformation-2 and cerebral cavernous malformation-3 in rat testes and their potential role in experimental varicocele. Fertil Steril 2010; 93:2716-22. [DOI: 10.1016/j.fertnstert.2009.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 05/07/2009] [Accepted: 06/15/2009] [Indexed: 10/20/2022]
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26
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Bialas M, Borczynska A, Rozwadowska N, Fiszer D, Kosicki W, Jedrzejczak P, Kurpisz M. SCF and c-kit expression profiles in male individuals with normal and impaired spermatogenesis. Andrologia 2010; 42:83-91. [DOI: 10.1111/j.1439-0272.2009.00960.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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27
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Schistosoma mansoni: signal transduction processes during the development of the reproductive organs. Parasitology 2010; 137:497-520. [PMID: 20163751 DOI: 10.1017/s0031182010000053] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among the topics of considerable interest concerning our understanding of the unusual biology of schistosomes is the sexual maturation of the female. The identification of genes coding for signal transduction proteins controlling essential steps of the pairing-dependent differentiation of the reproductive organs, vitellarium and ovary will help to substantiate our knowledge about this unique parasite. Furthermore, such signalling proteins could be potential targets to interfere with the development of this parasite to combat schistosomiasis since its pathology is caused by the eggs. This review summarises first post-genomic steps to elucidate the function of gonad-specific signalling molecules which were identified by homology-based cloning strategies, by in silico identification or by yeast two-hybrid interaction analyses, using a combination of novel techniques. These include the in vitro culture of adult schistosomes, their treatment with chemical inhibitors to block enzyme activity, the use of RNAi to silence gene function post-transcriptionally, and confocal laser scanning microscopy to study the morphological consequences of these experimental approaches. Finally, we propose a first model of protein networks that are active in the ovary regulating mitogenic activity and differentiation. Some of these molecules are also active in the testes of males, probably fulfilling similar roles as in the ovary.
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28
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Beckmann S, Buro C, Dissous C, Hirzmann J, Grevelding CG. The Syk kinase SmTK4 of Schistosoma mansoni is involved in the regulation of spermatogenesis and oogenesis. PLoS Pathog 2010; 6:e1000769. [PMID: 20169182 PMCID: PMC2820527 DOI: 10.1371/journal.ppat.1000769] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Accepted: 01/13/2010] [Indexed: 01/09/2023] Open
Abstract
The signal transduction protein SmTK4 from Schistosoma mansoni belongs to the family of Syk kinases. In vertebrates, Syk kinases are known to play specialized roles in signaling pathways in cells of the hematopoietic system. Although Syk kinases were identified in some invertebrates, their role in this group of animals has not yet been elucidated. Since SmTK4 is the first Syk kinase from a parasitic helminth, shown to be predominantly expressed in the testes and ovary of adult worms, we investigated its function. To unravel signaling cascades in which SmTK4 is involved, yeast two-/three-hybrid library screenings were performed with either the tandem SH2-domain, or with the linker region including the tyrosine kinase domain of SmTK4. Besides the Src kinase SmTK3 we identified a new Src kinase (SmTK6) acting upstream of SmTK4 and a MAPK-activating protein, as well as mapmodulin acting downstream. Their identities and colocalization studies pointed to a role of SmTK4 in a signaling cascade regulating the proliferation and/or differentiation of cells in the gonads of schistosomes. To confirm this decisive role we performed biochemical and molecular approaches to knock down SmTK4 combined with a novel protocol for confocal laser scanning microscopy for morphological analyses. Using the Syk kinase-specific inhibitor Piceatannol or by RNAi treatment of adult schistosomes in vitro, corresponding phenotypes were detected in the testes and ovary. In the Xenopus oocyte system it was finally confirmed that Piceatannol suppressed the activity of the catalytic kinase domain of SmTK4. Our findings demonstrate a pivotal role of SmTK4 in gametogenesis, a new function for Syk kinases in eukaryotes.
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Affiliation(s)
- Svenja Beckmann
- Institute for Parasitology, Justus-Liebig-University, Giessen, Germany
| | - Christin Buro
- Institute for Parasitology, Justus-Liebig-University, Giessen, Germany
| | - Colette Dissous
- Inserm, U547, University Lille Nord de France, Institut Pasteur de Lille, Lille, France
| | - Jörg Hirzmann
- Institute for Parasitology, Justus-Liebig-University, Giessen, Germany
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29
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Kierszenbaum AL, Rivkin E, Talmor-Cohen A, Shalgi R, Tres LL. Expression of full-length and truncated Fyn tyrosine kinase transcripts and encoded proteins during spermatogenesis and localization during acrosome biogenesis and fertilization. Mol Reprod Dev 2009; 76:832-43. [DOI: 10.1002/mrd.21049] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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30
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Raucci F, Di Fiore MM. The reproductive activity in the testis of Podarcis s. sicula involves D-aspartic acid: a study on c-kit receptor protein, tyrosine kinase activity and PCNA protein during annual sexual cycle. Gen Comp Endocrinol 2009; 161:373-83. [PMID: 19523373 DOI: 10.1016/j.ygcen.2009.02.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 01/26/2009] [Accepted: 02/02/2009] [Indexed: 11/21/2022]
Abstract
The current study provides substantial evidence that the pattern of synthesis of D-aspartic acid (D-Asp) in the testes of lizard Podarcis s. sicula throughout the reproductive cycle is in parallel with seasonal variations of testosterone, c-kit receptor protein, tyrosine kinase activity, and proliferating cell nuclear antigen (PCNA) protein. Although the trend is the same in all phases of the sexual cycle, the peaks of these three molecules are detectable only during the reproductive period. Using Western blot technique, we demonstrated that both polyclonal c-kit and PCNA antibodies specifically recognized bands with molecular mass of approximately 150 and approximately 36 kDa, respectively. By immunocytochemical methods, D-Asp immunopositivity appeared spread in the germinal epithelium as well as in the interstitial compartment of the testes. We also found specific c-kit labeling in I and II spermatogonia (SPG), in I and II spermatocytes (SPC), in the elongated spermatides, in spermatozoa, in Sertoli and Leydig cells. Like c-kit, PCNA positivity was located in the germinal epithelium pattern. Furthermore, we investigated the relationship between testosterone, c-kit receptor, tyrosine kinases activity and PCNA following treatment with D-Asp. In vivo experiments, entailing a single injection of D-Asp (2.0 micromol/g body weight), demonstrated that this amino acid significantly accumulated in the testes. After 3 h, its uptake was accompanied by an increase in testosterone levels and in the expression and intensity of immunostaining of c-kit receptor protein. Furthermore, at 6 h, exogenous D-Asp affected the phosphorylation of tyrosine kinases, whose activation was positively correlated with the temporal uptake of both D-Asp and testosterone detected in the testes. Thereafter, between 6 and 15 h, the expression of PCNA was induced and an increase in its immunolabeling intensity was observed. Taken all together, these results provide new insights into the testicular activity during the reproductive cycle of Podarcis s. sicula, suggesting that a sequential cascade of a functional relationship between testosterone levels, c-kit receptor protein, tyrosine kinase activity and PCNA could be partly mediated by D-aspartic acid.
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Affiliation(s)
- Franca Raucci
- Department of Life Sciences, Second University of Naples, Via Vivaldi 43, 81100 Caserta, Italy.
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Kierszenbaum AL, Rivkin E, Tres LL. Expression of Fer testis (FerT) tyrosine kinase transcript variants and distribution sites of FerT during the development of the acrosome-acroplaxome-manchette complex in rat spermatids. Dev Dyn 2009; 237:3882-91. [PMID: 18985748 DOI: 10.1002/dvdy.21789] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
We report the association of testicular Fer, a non-receptor tyrosine kinase, with acrosome development and remodeling of the acrosome-associated acroplaxome plate during spermatid head shaping. A single gene expresses two forms of Fer tyrosine kinases in testis: a somatic form (FerS) and a truncated testis-type form (FerT). FerT transcript variants are seen in spermatocytes and spermatids. FerS transcripts are not detected in round spermatids but are moderately transcribed in spermatocytes. FerT protein is associated with the spermatid medial/trans-Golgi region, proacrosomal vesicles, the cytosolic side of the outer acrosome membrane and adjacent to the inner acrosome membrane facing the acroplaxome. FerT coexist in the acroplaxome with phosphorylated cortactin, a regulator of F-actin dynamics. We propose that FerT participates in acrosome development and that phosphorylated cortactin may contribute to structural changes in F-actin in the acroplaxome during spermatid head shaping.
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Affiliation(s)
- Abraham L Kierszenbaum
- Department of Cell Biology and Anatomy, CUNY Medical School, Harris Hall Suite 306, 160 Convent Avenue, New York, NY 10031, USA.
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Epigenetic processes implemented during spermatogenesis distinguish the paternal pronucleus in the embryo. Reprod Biomed Online 2008; 16:13-22. [DOI: 10.1016/s1472-6483(10)60552-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Bordeleau LJ, Leclerc P. Expression of hck-tr, a truncated form of the src-related tyrosine kinase hck, in bovine spermatozoa and testis. Mol Reprod Dev 2008; 75:828-37. [DOI: 10.1002/mrd.20814] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Raucci F, Di Fiore MM. The c-kit receptor protein in the testis of green frog Rana esculenta: seasonal changes in relationship to testosterone titres and spermatogonial proliferation. Reproduction 2007; 133:51-60. [PMID: 17244732 DOI: 10.1530/rep.1.01009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The green frog Rana esculenta is a seasonal breeder. The cyclic changes between almost arrested and highly activated spermatogenesis offer an ideal model to study basic mechanisms of spermatogenesis. In this study, we demonstrated, to our knowledge for the first time, c-kit receptor positive cells in the testis of this amphibian. The presence of c-kit receptor protein was confirmed by western blotting (Wb) analyses carried out in the testis during all the three main phases of the sexual cycle. The antibody recognized a band of about 150 kDa that was correlated with the positive staining in the germinal epithelium. The immunolabelling for c-kit receptor, evaluated by immunohistochemistry (IHC), was localized in I and II spermatogonia (SPG), in I and II spermatocytes, in both elongating spermatids and spermatozoa and in the Leydig cells. Furthermore, c-kit expression showed a seasonal pattern connected with both testicular and plasma profiles of testosterone during the reproductive cycle. The highest expression of c-kit receptor occurred during the reproductive period, when the testis exhibited the maximum concentration of testosterone. In this period, the mitotic activity of germ cell, assessed by both Wb and IHC analyses for proliferating cell nuclear antigen (PCNA), was intensive. Indeed, during the post-reproductive period, testosterone titres were the lowest and the expression of both PCNA and c-kit receptor protein in the testis, although present, is minor when compared with the reproductive phase. This evidence suggests that cell division can continue sufficiently to accumulate SPG for the next spring, when new germinal cells undergo multiplication. Finally, during the pre-reproductive period, testosterone levels begin to increase and mitotic activity of germinal epithelium is comparably enhanced. These events seem to precede the period of maximum stimulated spermatogonial proliferation, i.e. the reproductive period. These results suggest that the c-kit receptor may play a role in germ cell proliferation and provide a basis for future detailed investigation of regulatory factors of the proliferation of SPG.
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Affiliation(s)
- Franca Raucci
- Department of Life Sciences, Second University of Naples, Via Vivaldi 43, 81100 Caserta, Italy
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Wang Y, Culty M. Identification and distribution of a novel platelet-derived growth factor receptor beta variant: effect of retinoic acid and involvement in cell differentiation. Endocrinology 2007; 148:2233-50. [PMID: 17303670 DOI: 10.1210/en.2006-1206] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have shown previously that neonatal testicular gonocytes express platelet-derived growth factor receptors (PDGFR) alpha and beta. We report the expression of a novel PDGFRbeta (V1-PDGFRbeta) transcript in gonocytes of 3-d-old rat testes. V1-PDGFRbeta nucleotide sequence spans from intron 6 to exon 23 of the PDGFRbeta gene, and is predicted to encode a protein lacking part of the extracellular domain. V1-PDGFRbeta transcripts are expressed preferentially in developing gonads. The embryonic teratocarcinoma F9 cells, in which differentiation is driven by retinoic acid (RA), express V1-PDGFRbeta, but not wild-type PDGFRbeta. Green fluorescent protein-tagged V1-PDGFRbeta localized mainly in cytosol of F9, MA-10, and COS-1 cells. FLAG and green fluorescent protein-tagged V1-PDGFRbeta displayed tyrosine kinase activities and contain phosphotyrosine residues, suggesting that V1-PDGFRbeta is a cytosolic tyrosine kinase. Treatment of F9 cells with RA induced V1-PDGFRbeta gene expression, concomitant with changes in morphology and increased mRNA expression of collagen IV and laminin B1, suggesting that V1-PFGRbeta is involved in cell differentiation. Similarly, treatment of postnatal d 3 rat gonocytes with RA induced a dose-dependent increase in V1-PDGFRbeta expression together with an increase in c-kit and Stra8, markers of more differentiated germ cells and a concomitant decrease in GFRalpha1, a marker of spermatogonial stem cells. However, an excess of V1-PDGFRbeta inhibited RA-mediated collagen IV and laminin B1 expression and altered both RA-dependent and RA-independent morphological changes in F9 cells, while increasing cell survival. These results suggest that the expression of V1-PDGFRbeta is tightly regulated during differentiation and that it may play an active role in germ cell differentiation.
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Affiliation(s)
- Yan Wang
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University Medical Center, Washington, D.C. 20057, USA
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Srivastava J, Premi S, Garg LC, Ali S. Organizational and expressional uniqueness of a testis-specific mRNA transcript of protooncogene c-kit receptor in water buffalo Bubalus bubalis. DNA Cell Biol 2006; 25:501-13. [PMID: 16989573 DOI: 10.1089/dna.2006.25.501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Protooncogene c-kit receptor is implicated with spermatogenesis, melanogenesis, and hematopoeisis, and undergoes tissue/stage specific alternate splicing. We have isolated 2973-bp full-length cDNA sequence (CDS) of this gene from testis and other tissues of water buffalo Bubalus bubalis. Upon comparison, the c-kit sequences showed tissue specific nucleotide changes resulting in novel truncated peptides. These peptides lacked intracellular and/or transmembrane domains in all the tissues except testis. Other alternately spliced tissue-specific transcripts were also detected, which are the integral parts of the open reading frame and have been reported in other mammals. Phylogenetic analysis of the sequences revealed unique tyrosine kinase domain in buffalo. Copy number calculation and expressional analysis of c-kit using real-time PCR established its single copy status and highest expression (137-177 folds) in testis compared to that (least) in liver. c-kit expression was detected in semen samples although 10 times lesser compared to that in testis. The highest expression of c-kit in testis and the presence of mRNA transcript in sperms substantiate its predominant role in spermatogenesis. This study establishes unequivocal involvement of an autosomal gene c-kit receptor in testicular function.
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Affiliation(s)
- Jyoti Srivastava
- Molecular Genetics Laboratory, National Institute of Immunology, New Delhi, India
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