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Pessoa GP, López LS, Rosero JM, Dos Santos SCA, Yasui GS, Senhorini JA, Monzani PS. Isolation and cryopreservation of Pseudopimelodus mangurus (Siluriformes) spermatogonial cells. Cryobiology 2024; 116:104941. [PMID: 39029551 DOI: 10.1016/j.cryobiol.2024.104941] [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: 04/10/2024] [Revised: 06/13/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Spermatogonia cryopreservation can be a strategy for future conservation actions. The neotropical Siluriformes Pseudopimelodus mangurus was already classified as vulnerable on the Red List of Threatened Species. P. mangurus spermatogonial cells were isolated, assessed, and cryopreserved. Fragments of the testis were enzymatically dissociated, purified using Percoll density gradient, and submitted to differential plating. Fractionated cells were evaluated by microscopy, ddx4 (vasa) relative expression, and alkaline phosphatase activity. Cryopreservation was conducted using ethylene glycol, glycerol, dimethyl sulfoxide (DMSO), dimethylacetamide (DMA), and propanediol at 1 M, 1.5 M, and 2 M. Cell viability was evaluated and cell concentration was determined. Cell fractions from 20 % and 30 % Percoll gradient bands showed the highest concentrations of spermatogonia. The fraction mix showed 54 % purity and 93 % viability. After differential plating, 60 % purity and 92 % viability were obtained. Spermatogonial cells showed high alkaline phosphatase activity compared to spermatocytes and spermatids. The relative spermatogonial ddx4 expression from the Percoll density gradient was about twice as high as in samples from the testis and the differential plating. The increased ddx4 expression indicated the enrichment of spermatogonial cells by density gradient step and dead cells expressing ddx4 in differential plating, or ddx4 decreasing expression during cell culture. For this reason, cells from the Percoll gradient were chosen for cryopreservation. Propanediol at 1 M demonstrated the best condition for spermatogonial cell cryopreservation, presenting 98 % viability, while dimethylacetamide at 2 M represented the least favorable condition, with approximately 47 % viability. These findings are essential for P. mangurus spermatogonial cell cryopreservation, aiming to generate a spermatogonia cryobank for future conservation efforts.
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Affiliation(s)
- Giselle Pessanha Pessoa
- Institute of Bioscience, São Paulo State University, Botucatu, SP, Brazil; Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil.
| | - Lucia Suárez López
- Institute of Bioscience, São Paulo State University, Botucatu, SP, Brazil; Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil
| | - Jenyffer Mairely Rosero
- Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | | | - George Shigueki Yasui
- Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | - José Augusto Senhorini
- Institute of Bioscience, São Paulo State University, Botucatu, SP, Brazil; Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil
| | - Paulo Sérgio Monzani
- Institute of Bioscience, São Paulo State University, Botucatu, SP, Brazil; Laboratory of Fish Biotechnology, Chico Mendes Institute of Biodiversity Conservation, National Center for Research and Conservation of Continental Aquatic Biodiversity, Pirassununga, SP, Brazil
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Tang S, Jones C, Dye J, Coward K. Dissociation, enrichment, and the in vitro formation of gonocyte colonies from cryopreserved neonatal bovine testicular tissues. Theriogenology 2023; 210:143-153. [PMID: 37499372 DOI: 10.1016/j.theriogenology.2023.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 07/11/2023] [Accepted: 07/22/2023] [Indexed: 07/29/2023]
Abstract
Gonocytes play an important role in early development of spermatogonial stem cells and fertility preservation to acquire more high quality gonocytes in vitro for further germ cell-related research and applications, it is necessarily needed to enrich and in vitro propagate gonocytes from cryopreserved bovine testicular tissues. This study aimed to investigate the isolation, enrichment, and colony formation of gonocytes in vitro for germ cell expansion from cryopreserved neonatal bovine testicular tissues. The effects of several different in vitro culture conditions, including seeding density, temperature, serum replacement and extracellular matrices were investigated for the maintenance, proliferation and formation of gonocyte colonies in vitro. Frozen/thawed two-week-old neonatal bovine testicular tissues were digested and gonocytes were enriched using a Percoll density gradient. Cell viability was accessed by trypan blue staining and cell apoptosis was evaluated by TUNEL assays. Gonocytes were identified and confirmed by immunofluorescence with the PGP9.5 germ cell marker and the OCT4 pluripotency marker while Sertoli cells were stained with vimentin. We found that neonatal bovine gonocytes were efficiently enriched by a 30%-40% Percoll density gradient (p < 0.05). No significant differences were detected between neonatal bovine testicular cells cultured at 34 °C or 37 °C. The formation of gonocyte colonies was observed in culture medium supplemented with knockout serum replacement (KSR), but not fetal bovine serum (FBS), at a seeding density higher than 5.0 × 104 cells/well. A greater number of gonocyte colonies were observed in culture plates coated with laminin (38.00 ± 6.24/well) and Matrigel (38.67 ± 3.78/well) when compared to plates coated with collagen IV and fibronectin (p < 0.05). In conclusion, bovine neonatal gonocytes were able to be efficiently isolated, enriched and maintained in gonocyte colonies in vitro; the development of this protocol provides vital information for the clinical translation of this technology and the future restoration of human fertility.
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Affiliation(s)
- Shiyan Tang
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, United Kingdom
| | - Celine Jones
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, United Kingdom
| | - Julian Dye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - Kevin Coward
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, United Kingdom.
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Li C, Cheng D, Xu P, Nie H, Zhang T, Pang X. POSTN Promotes the Proliferation of Spermatogonial Cells by Activating the Wnt/β-Catenin Signaling Pathway. Reprod Sci 2021; 28:2906-2915. [PMID: 33959891 DOI: 10.1007/s43032-021-00596-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/22/2021] [Indexed: 11/26/2022]
Abstract
The self-renewal of spermatogonial cells (SCs) provides the foundation for life-long spermatogenesis. To date, only a few growth factors have been used for the culture of SCs in vitro, and how to enhance proliferation capacity of SCs in vitro needs further research. This study aimed to explore the effects of periostin (POSTN) on the proliferation of human SCs. GC-1 spg cells were cultured in a medium with POSTN, cell proliferation was evaluated by MTS analysis and EdU assay, and the Wnt/β-catenin signaling pathway was examined. Thereafter, the proliferations of human SC were detected using immunofluorescence and RT-PCR. In this study, we found that CM secreted by human amniotic mesenchymal stem cells (hAMSCs) could enhance the proliferation capacity of mouse GC-1 spg cells. Label-free mass spectrometry and ELISA analysis demonstrated that high level of POSTN was secreted by hAMSCs. MTS and EdU staining showed that POSTN increased GC-1 spg cell proliferation, whereas CM from POSTN-silenced hAMSCs suppressed cell proliferation capacity. Then POSTN was found to activate the Wnt/β-catenin signaling pathway to regulate the proliferation of GC-1 spg cells. XAV-939, a Wnt/β-catenin inhibitor, partially reversed the effects of POSTN on GC-1 spg cell proliferation. We then analyzed human SCs and found that POSTN promoted human SC proliferation in vitro. These findings provide insights regarding the role of POSTN in regulating SC proliferation via the Wnt/β-catenin signaling pathway and suggest that POSTN may serve as a cytokine for male infertility therapy.
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Affiliation(s)
- Caihong Li
- Department of Stem Cells and Regenerative Medicine, Shenyang Key Laboratory of Stem Cell and Regenerative Medicine, China Medical University, Shenyang, 110013, Liaoning, China
- Center for Reproductive Medicine, Assisted Reproductive Technology Laboratory, Shenyang Jinghua Hospital, Shenyang, 110005, Liaoning, China
| | - Dongkai Cheng
- Center for Reproductive Medicine, Assisted Reproductive Technology Laboratory, Shenyang Jinghua Hospital, Shenyang, 110005, Liaoning, China
| | - Peng Xu
- Center for Reproductive Medicine, Assisted Reproductive Technology Laboratory, Shenyang Jinghua Hospital, Shenyang, 110005, Liaoning, China
| | - Hongguang Nie
- Department of Stem Cells and Regenerative Medicine, Shenyang Key Laboratory of Stem Cell and Regenerative Medicine, China Medical University, Shenyang, 110013, Liaoning, China
| | - Tao Zhang
- Department of Stem Cells and Regenerative Medicine, Shenyang Key Laboratory of Stem Cell and Regenerative Medicine, China Medical University, Shenyang, 110013, Liaoning, China.
| | - Xining Pang
- Department of Stem Cells and Regenerative Medicine, Shenyang Key Laboratory of Stem Cell and Regenerative Medicine, China Medical University, Shenyang, 110013, Liaoning, China.
- Shenyang Amnion Bioengineering and Technology R & D Center, Shenyang Liaoning Amnion Stem Cell and Regenerative Medicine Professional Technology Innovation Platform, Liaoning Human Amniotic Membrane Biological Dressing Stem Cell and Regenerative Medicine Engineering Research Center, Shenyang, 110015, Liaoning, China.
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Wang H, Shan B, Duan Y, Zhu J, Jiang L, Liu Y, Zhang Y, Qi F, Niu S. Effects of Heshouwuyin on gene expression of the insulin/IGF signalling pathway in rat testis and spermatogenic cells. PHARMACEUTICAL BIOLOGY 2020; 58:1199-1210. [PMID: 33264567 PMCID: PMC7717869 DOI: 10.1080/13880209.2020.1839511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
CONTEXT The Chinese herbal formula Heshouwu decoction (Heshouwuyin) has protective effects on testicular function in aging male rats, but the mechanism is unknown. OBJECTIVE This study investigated whether Heshouwuyin affects the testicular function of aging rats by regulating the insulin/IGF signalling pathway. MATERIALS AND METHODS Sixteen-month-old male Wistar rats in the Heshouwuyin group and the natural-aging group were orally administered Heshouwuyin granules (0.056 g/kg) or equivalent normal saline for 60 d. The testicular tissue of 12-month-old male Wistar rats was removed as a young control group (n = 10). The testicular tissue and spermatogenic cells were studied. RESULTS The immunofluorescence results revealed that the insulin receptor (INSR)- (0.056 ± 0.00548), insulin receptor substrate 1(IRS1)- (0.251 ± 0.031), IRS2 (0.230 ± 0.019)- and insulin-like growth factor 1 (IGF1)-positive cell rate (0.33 ± 0.04) in the aging group was higher than that in the young control group (0.116 ± 0.011, 0.401 ± 0.0256, 0.427 ± 0.031, 0.56 ± 0.031; p < 0.01), and the IGF-binding protein 3 (IGFBP3)-positive cell rate (0.42 ± 0.024) was lower than that (0.06 ± 0.027) in the young group (p < 0.01). The intervention of Heshouwuyin reversed the above phenomena. The qPCR and immunoblot results were consistent with those of the immunofluorescence. The same results were obtained in spermatogenic cells. CONCLUSIONS Our research shows that Heshouwuyin can regulate the insulin/IGF signalling pathway to improve testicular function, and provides an experimental basis for further clinical use.
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Affiliation(s)
- Hongjie Wang
- School of Medicine, Hebei University, Baoding, China
| | - Boying Shan
- School of Medicine, Hebei University, Baoding, China
| | - Yulei Duan
- School of Medicine, Hebei University, Baoding, China
| | - Juan Zhu
- School of Medicine, Hebei University, Baoding, China
| | - Liping Jiang
- School of Medicine, Hebei University, Baoding, China
| | - Yang Liu
- School of Medicine, Hebei University, Baoding, China
| | - Yan Zhang
- School of Medicine, Hebei University, Baoding, China
| | - Feng Qi
- The Department of Internal Medicine, Baoding No.1 Hospital, Baoding, China
- Feng Qi Baoding No.1 Hospital, Baihua east road, Baoding071000, Hebei Province, China
| | - Siyun Niu
- School of Medicine, Hebei University, Baoding, China
- CONTACT Siyun Niu Department of Histology and Embryology, School of Basic Medical Sciences, Hebei University, Yuhua east road, Lianchi District, Baoding071002, Hebei Province, China
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Wang H, Zhu J, Jiang L, Shan B, Xiao P, Ai J, Li N, Qi F, Niu S. Mechanism of Heshouwuyin inhibiting the Cyt c/Apaf-1/Caspase-9/Caspase-3 pathway in spermatogenic cell apoptosis. BMC Complement Med Ther 2020; 20:180. [PMID: 32527252 PMCID: PMC7291440 DOI: 10.1186/s12906-020-02904-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/26/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The Chinese herbal compound Heshouwuyin has been shown to downregulate the apoptotic rate of testicular tissue cells in Wistar naturally aging rats, and this effect might be related to the mitochondrial pathway [15]. Apoptotic protease activating factor-1 (Apaf-1) is a major component of the apoptotic complex, which is a key element of the mitochondrial endogenous apoptotic pathway [13]. To further clarify the mechanism of Heshouwuyin in the mitochondrial apoptotic pathway, this study used Apaf-1 as a target to explore the mechanism by which Heshouwuyin inhibits the Apaf-1 pathway of spermatogenic cell apoptosis. METHODS In this study, an aging model of rat spermatogenic cells was established using free radical oxidative damage. Flow cytometry was used to detect the apoptosis rate of germ cells and the inhibitory effect of Heshouwuyin. Apaf-1 was specifically knocked down by siRNA interference technology, and mitochondrial membrane potential was measured. qRT-PCR, Western blotting and immunofluorescence analyses were used to detect the expression of the key genes Cyt c, Caspase-9 and Caspase-3 in the mitochondrial apoptotic pathway of spermatogenic cells. RESULTS Heshouwuyin reduced the mRNA and protein expression levels of Cyt c, Caspase-9 and Caspase-3 in senescent spermatogenic cells. In these cells, the mRNA and protein expression levels of Cyt c did not change significantly after specific knockdown of Apaf-1, and the mRNA and protein expression levels of Caspase-9 and Caspase-3 decreased significantly. This finding indicated that knockdown of Apaf-1 could decrease the mRNA and protein expression levels of the downstream pro-apoptotic genes Caspase-9 and Caspase-3. Although Cyt c was an upstream gene of Apaf-1, knockdown of Apaf-1 had no significant effect on Cyt c expression. CONCLUSION The inhibition of spermatogenic cell apoptosis by Heshouwuyin was closely related to the Cyt c/Apaf-1/Caspase-9/Caspase-3 pathway. The inhibition of apoptosis by Heshouwuyin not only involved the Apaf-1 pathway, but other signaling pathways.
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Affiliation(s)
- Hongjie Wang
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China.,Affiliated Hospital of Hebei University, Baoding, 071002, Hebei Province, China
| | - Juan Zhu
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China
| | - Liping Jiang
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China
| | - Boying Shan
- Nanbao Development Zone Hospital, Tangshan, 063305, Hebei Province, China
| | - Peihan Xiao
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China
| | - Jiayi Ai
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China
| | - Na Li
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China
| | - Feng Qi
- Baoding No.1 Hospital, Baoding, 071000, Hebei Province, China.
| | - Siyun Niu
- School of Medicine, Hebei University, Baoding, 071002, Hebei Province, China.
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Ibtisham F, Honaramooz A. Spermatogonial Stem Cells for In Vitro Spermatogenesis and In Vivo Restoration of Fertility. Cells 2020; 9:E745. [PMID: 32197440 PMCID: PMC7140722 DOI: 10.3390/cells9030745] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 12/14/2022] Open
Abstract
Spermatogonial stem cells (SSCs) are the only adult stem cells capable of passing genes onto the next generation. SSCs also have the potential to provide important knowledge about stem cells in general and to offer critical in vitro and in vivo applications in assisted reproductive technologies. After century-long research, proof-of-principle culture systems have been introduced to support the in vitro differentiation of SSCs from rodent models into haploid male germ cells. Despite recent progress in organotypic testicular tissue culture and two-dimensional or three-dimensional cell culture systems, to achieve complete in vitro spermatogenesis (IVS) using non-rodent species remains challenging. Successful in vitro production of human haploid male germ cells will foster hopes of preserving the fertility potential of prepubertal cancer patients who frequently face infertility due to the gonadotoxic side-effects of cancer treatment. Moreover, the development of optimal systems for IVS would allow designing experiments that are otherwise difficult or impossible to be performed directly in vivo, such as genetic manipulation of germ cells or correction of genetic disorders. This review outlines the recent progress in the use of SSCs for IVS and potential in vivo applications for the restoration of fertility.
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Affiliation(s)
| | - Ali Honaramooz
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada;
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Talebi A, Sadighi Gilani MA, Koruji M, Ai J, Rezaie MJ, Navid S, Salehi M, Abbasi M. Colonization of Mouse Spermatogonial Cells in Modified Soft Agar Culture System Utilizing Nanofibrous Scaffold: A New Approach. Galen Med J 2019; 8:e1319. [PMID: 34466493 PMCID: PMC8343708 DOI: 10.31661/gmj.v8i0.1319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/07/2018] [Accepted: 09/16/2018] [Indexed: 01/23/2023] Open
Abstract
Background: Spermatogonial stem cells (SSCs) are considered in fertility management approaches of prepubertal boys facing cancer therapies. However, in vitro propagation has become an important issue due to a small number of SSCs in testicular tissue. The present study aimed to investigate a modified soft agar culture system by using a nanofibrous scaffold as a new approach to mimic in vivo conditions of SSCs development. Materials and Methods: The SSCs were isolated from neonate mouse testes, cultured on polycaprolactone scaffold, and covered by a layer of soft agar for 2 weeks. Then, the number and diameter of colonies formed in experimental groups were measured and spermatogonial markers (i.e., Plzf, Gfrα1, Id4, and c-Kit) in SSCs colonies were evaluated by a real-time polymerase chain reaction and immunostaining. Results: Our results indicated that the colonization rate of SSCs was significantly higher in the present modified soft agar culture system (P<0.05). Only Plzf indicated a significant increased at the levels (P<0.05), the gene expression levels of Id4, Plzf, and Gfrα1 were higher in the present culture system. In addition, the expression of the c-Kit gene as a differentiating spermatogonia marker was higher in presence of scaffold and soft agar compared with the amount of other experimental groups (P<0.05). Conclusion: The culture system by using nanofibrous scaffold and soft agar as a new culture method suggests the potential of this approach in SSCs enrichment and differentiation strategies for male infertility treatments, as well as in vitro spermatogenesis.
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Affiliation(s)
- Ali Talebi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Morteza Koruji
- Cellular and Molecular Research Center & Department of Anatomical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Jafar Rezaie
- Department of Embryology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Shadan Navid
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mehdi Abbasi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Correspondence to: Mehdi Abbasi, Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Telephone Number: +989125139314 Email Address:
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Identification of a Technique Optimized for the Isolation of Spermatogonial Stem Cells from Mouse Testes. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2018. [DOI: 10.12750/jet.2018.33.4.327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Liu J, Shang D, Xiao Y, Zhong P, Cheng H, Zhou R. Isolation and characterization of string-forming female germline stem cells from ovaries of neonatal mice. J Biol Chem 2017; 292:16003-16013. [PMID: 28827310 DOI: 10.1074/jbc.m117.799403] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 08/19/2017] [Indexed: 12/30/2022] Open
Abstract
Germline stem cells are essential in the generation of both male and female gametes. In mammals, the male testis produces sperm throughout the entire lifetime, facilitated by testicular germline stem cells. Oocyte renewal ceases in postnatal or adult life in mammalian females, suggesting that germline stem cells are absent from the mammalian ovary. However, studies in mice, rats, and humans have recently provided evidence for ovarian female germline stem cells (FGSCs). A better understanding of the role of FGSCs in ovaries could help improve fertility treatments. Here, we developed a rapid and efficient method for isolating FGSCs from ovaries of neonatal mice. Notably, our FGSC isolation method could efficiently isolate on average 15 cell "strings" per ovary from mice at 1-3 days postpartum. FGSCs isolated from neonatal mice displayed the string-forming cell configuration at mitosis (i.e. a "stringing" FGSC (sFGSC) phenotype) and a disperse phenotype in postnatal mice. We also found that sFGSCs undergo vigorous mitosis especially at 1-3 days postpartum. After cell division, the sFGSC membranes tended to be connected to form sFGSCs. Moreover, F-actin filaments exhibited a cell-cortex distribution in sFGSCs, and E-cadherin converged in cell-cell connection regions, resulting in the string-forming morphology. Our new method provides a platform for isolating FGSCs from the neonatal ovary, and our findings indicate that FGCSs exhibit string-forming features in neonatal mice. The sFGSCs represent a valuable resource for analysis of ovary function and an in vitro model for future clinical use to address ovarian dysfunction.
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Affiliation(s)
- Jing Liu
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Dantong Shang
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yao Xiao
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Pei Zhong
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Hanhua Cheng
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Rongjia Zhou
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
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Effects of different Sertoli cell types on the maintenance of adult spermatogonial stem cells in vitro. In Vitro Cell Dev Biol Anim 2017; 53:752-758. [PMID: 28699140 DOI: 10.1007/s11626-017-0172-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 05/31/2017] [Indexed: 01/10/2023]
Abstract
Spermatongonial stem cells (SSCs) are unique testis cells that are able to proliferate, differentiate, and transmit genetic information to the next generation. However, the effect of different Sertoli cell types on the expression of specific SSC genes is not yet well understood. In this study, we compare the in vitro effect of adult Sertoli cells, embryonic Sertoli cells, and TM4 (a Sertoli cell line) as feeder layers on the expression of SSC genes. SSCs were isolated from the testis of adult male mice and purified by differential plating. Following enrichment, SSCs were cultivated for 1 and 2 wk in the presence of various feeders. The expression of SSC-specific genes (Mvh, ZBTB, and c-kit) was evaluated by real-time polymerase chain reaction. Our results revealed that expression of the specific SSC genes was significantly higher in the embryonic Sertoli cells after 1 and 2 wk compared to the adult Sertoli cells and the TM4 group. Our finding suggest that co-culturing of SSCs with embryonic Sertoli cells is helpful for in vitro cultivation of SSCs and might improve the self-renewal of these stem cells.
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Li B, Zhuang M, Wu C, Niu B, Zhang Z, Li X, Wei Z, Li G, Hua J. Bovine male germline stem-like cells cultured in serum- and feeder-free medium. Cytotechnology 2016; 68:2145-57. [PMID: 26883918 DOI: 10.1007/s10616-015-9933-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/14/2015] [Indexed: 12/19/2022] Open
Abstract
Male germline stem cells (mGSCs) presented in male testis are responsible for spermatogenesis during their whole life. However, little information can be found on the culture of bovine mGSCs, and the current culture system needs to be improved. In this study, we compared the effects of several commercial serum-free media and different extra-cellular matrix on the enrichment and cultivation of mGSCs. To find out the best culture condition, the biological characteristics of the cultured cells were evaluated by morphological observation, RT-PCR and immunofluorescent staining. According to the cells' condition in different experiment groups, we found out an efficient cultivation system for bovine mGSCs derived from neonate testis. In this serum- and feeder-free medium, the cultured cells maintained the typical morphology, and expressed specific surface markers of both pluripotent ES cells and mGSCs, including SSEA-1, CD49f, C-MYC, PLZF, GFRα1, LIN28, NANOG, Oct4 and SOX2 in commercial human ESCs medium PeproGrow-hESC + BIO (6-bromoindirubin-3'-oxime). Embryoid bodies, derived from the bovine mGSCs, and were formed by ganging drop culture. The retinoic acid induced bovine mGSCs were positive for Stra8, SCP3, DZAL, EMA1 and VASA, and resembled spermatid cells morphologically. Thus, we found an efficient bovine mGSCs-cultivation system, which is lack in serum and feeder.
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Affiliation(s)
- Bo Li
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mengru Zhuang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chongyang Wu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Bowen Niu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zhou Zhang
- Department of Reproduction Centre, Shaanxi Provine Women and Children Hospital, Xi'an, 710000, Shaanxi Province, China
| | - Xin Li
- Department of Clinic Medicine, Bengbu Medicine University, Bengbu, Anhui, China
| | - Zhuying Wei
- Key Laboratory for Mammalian Reproductive Biology and Biotechnology, Ministry of Education, Inner Mongolia University, Hohhot, 010021, China
| | - Guangpeng Li
- Key Laboratory for Mammalian Reproductive Biology and Biotechnology, Ministry of Education, Inner Mongolia University, Hohhot, 010021, China.
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Wang X, Chen T, Zhang Y, Li B, Xu Q, Song C. Isolation and Culture of Pig Spermatogonial Stem Cells and Their in Vitro Differentiation into Neuron-Like Cells and Adipocytes. Int J Mol Sci 2015; 16:26333-46. [PMID: 26556335 PMCID: PMC4661817 DOI: 10.3390/ijms161125958] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 10/21/2015] [Accepted: 10/23/2015] [Indexed: 12/14/2022] Open
Abstract
Spermatogonial stem cells (SSCs) renew themselves throughout the life of an organism and also differentiate into sperm in the adult. They are multipopent and therefore, can be induced to differentiate into many cells types in vitro. SSCs from pigs, considered an ideal animal model, are used in studies of male infertility, regenerative medicine, and preparation of transgenic animals. Here, we report on a culture system for porcine SSCs and the differentiation of these cells into neuron-like cells and adipocytes. SSCs and Sertoli cells were isolated from neonatal piglet testis by differential adhesion and SSCs were cultured on a feeder layer of Sertoli cells. Third-generation SSCs were induced to differentiate into neuron-like cells by addition of retinoic acid, β-mercaptoethanol, and 3-isobutyl-1-methylxanthine (IBMX) to the induction media and into adipocytes by the addition of hexadecadrol, insulin, and IBMX to the induction media. The differentiated cells were characterized by biochemical staining, qRT-PCR, and immunocytochemistry. The cells were positive for SSC markers, including alkaline phosphatase and SSC-specific genes, consistent with the cells being undifferentiated. The isolated SSCs survived on the Sertoli cells for 15 generations. Karyotyping confirmed that the chromosomal number of the SSCs were normal for pig (2n = 38, n = 19). Pig SSCs were successfully induced into neuron-like cells eight days after induction and into adipocytes 22 days after induction as determined by biochemical and immunocytochemical staining. qPCR results also support this conclusion. The nervous tissue markers genes, Nestin and β-tubulin, were expressed in the neuron-like cells and the adipocyte marker genes, PPARγ and C/EBPα, were expressed in the adipocytes.
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Affiliation(s)
- Xiaoyan Wang
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
| | - Tingfeng Chen
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
| | - Yani Zhang
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
| | - Bichun Li
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
| | - Qi Xu
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
| | - Chengyi Song
- College of Animal Science & Technology, Yangzhou University, Yangzhou 225009, China.
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