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Sung ZY, Liao YQ, Hou JH, Lai HH, Weng SM, Jao HW, Lu BJ, Chen CH. Advancements in fertility preservation strategies for pediatric male cancer patients: a review of cryopreservation and transplantation of immature testicular tissue. Reprod Biol Endocrinol 2024; 22:47. [PMID: 38637872 PMCID: PMC11025181 DOI: 10.1186/s12958-024-01219-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 04/06/2024] [Indexed: 04/20/2024] Open
Abstract
Recently, there has been increasing emphasis on the gonadotoxic effects of cancer therapy in prepubertal boys. As advances in oncology treatments continue to enhance survival rates for prepubertal boys, the need for preserving their functional testicular tissue for future reproduction becomes increasingly vital. Therefore, we explore cutting-edge strategies in fertility preservation, focusing on the cryopreservation and transplantation of immature testicular tissue as a promising avenue. The evolution of cryopreservation techniques, from controlled slow freezing to more recent advancements in vitrification, with an assessment of their strengths and limitations was exhibited. Detailed analysis of cryoprotectants, exposure times, and protocols underscores their impact on immature testicular tissue viability. In transplantation strategy, studies have revealed that the scrotal site may be the preferred location for immature testicular tissue grafting in both autotransplantation and xenotransplantation scenarios. Moreover, the use of biomaterial scaffolds during graft transplantation has shown promise in enhancing graft survival and stimulating spermatogenesis in immature testicular tissue over time. This comprehensive review provides a holistic approach to optimize the preservation strategy of human immature testicular tissue in the future.
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Affiliation(s)
- Zih-Yi Sung
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Yong-Qi Liao
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Jung-Hsiu Hou
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Hong-Hsien Lai
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Sung-Ming Weng
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Hai-Wei Jao
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Buo-Jia Lu
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Chi-Huang Chen
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC.
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC.
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2
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Jokar J, Abdulabbas HT, Alipanah H, Ghasemian A, Ai J, Rahimian N, Mohammadisoleimani E, Najafipour S. Tissue engineering studies in male infertility disorder. HUM FERTIL 2023; 26:1617-1635. [PMID: 37791451 DOI: 10.1080/14647273.2023.2251678] [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: 06/11/2022] [Accepted: 07/06/2023] [Indexed: 10/05/2023]
Abstract
Infertility is an important issue among couples worldwide which is caused by a variety of complex diseases. Male infertility is a problem in 7% of all men. In vitro spermatogenesis (IVS) is the experimental approach that has been developed for mimicking seminiferous tubules-like functional structures in vitro. Currently, various researchers are interested in finding and developing a microenvironmental condition or a bioartificial testis applied for fertility restoration via gamete production in vitro. The tissue engineering (TE) has developed new approaches to treat male fertility preservation through development of functional male germ cells. This makes TE a possible future strategy for restoration of male fertility. Although 3D culture systems supply the perception of the effect of cellular interactions in the process of spermatogenesis, formation of a native gradient of autocrine/paracrine factors in 3D culture systems have not been considered. These results collectively suggest that maintaining the microenvironment of testicular cells even in the form of a 3D-culture system is crucial in achieving spermatogenesis ex vivo. It is also possible to engineer the testicular structures using biomaterials to provide a supporting scaffold for somatic and stem cells. The insemination of these cells with GFs is possible for temporally and spatially adjusted release to mimic the microenvironment of the in situ seminiferous epithelium. This review focuses on recent studies and advances in the application of TE strategies to cell-tissue culture on synthetic or natural scaffolds supplemented with growth factors.
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Affiliation(s)
- Javad Jokar
- Department of Tissue Engineering, Faculty of Medicine, Fasa University of Medical Science, Fasa, Iran
| | | | - Hiva Alipanah
- Department of Physiology, School of Medicine, Fasa University of Medical Science, Fasa, Iran
| | - Abdolmajid Ghasemian
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | - Jafar Ai
- Tissue Engineering and Applied Cell Sciences Department, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Niloofar Rahimian
- Department of Biotechnology, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Elham Mohammadisoleimani
- Department of Biotechnology, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Sohrab Najafipour
- Department of Microbiology, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran
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3
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Leonel ECR, Dadashzadeh A, Moghassemi S, Vlieghe H, Wyns C, Orellana R, Amorim CA. New Solutions for Old Problems: How Reproductive Tissue Engineering Has Been Revolutionizing Reproductive Medicine. Ann Biomed Eng 2023; 51:2143-2171. [PMID: 37468688 DOI: 10.1007/s10439-023-03321-y] [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: 05/23/2023] [Accepted: 07/12/2023] [Indexed: 07/21/2023]
Abstract
Acquired disorders and congenital defects of the male and female reproductive systems can have profound impacts on patients, causing sexual and endocrine dysfunction and infertility, as well as psychosocial consequences that affect their self-esteem, identity, sexuality, and relationships. Reproductive tissue engineering (REPROTEN) is a promising approach to restore fertility and improve the quality of life of patients with reproductive disorders by developing, replacing, or regenerating cells, tissues, and organs from the reproductive and urinary systems. In this review, we explore the latest advancements in REPROTEN techniques and their applications for addressing degenerative conditions in male and female reproductive organs. We discuss current research and clinical outcomes and highlight the potential of 3D constructs utilizing biomaterials such as scaffolds, cells, and biologically active molecules. Our review offers a comprehensive guide for researchers and clinicians, providing insights into how to reestablish reproductive tissue structure and function using innovative surgical approaches and biomaterials. We highlight the benefits of REPROTEN for patients, including preservation of fertility and hormonal production, reconstruction of uterine and cervical structures, and restoration of sexual and urinary functions. Despite significant progress, REPROTEN still faces ethical and technical challenges that need to be addressed. Our review underscores the importance of continued research in this field to advance the development of effective and safe REPROTEN approaches for patients with reproductive disorders.
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Affiliation(s)
- Ellen C R Leonel
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, GO, Brazil
| | - Arezoo Dadashzadeh
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Hippocrate 55, bte B1.55.03, 1200, Brussels, Belgium
| | - Saeid Moghassemi
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Hippocrate 55, bte B1.55.03, 1200, Brussels, Belgium
| | - Hanne Vlieghe
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Hippocrate 55, bte B1.55.03, 1200, Brussels, Belgium
| | - Christine Wyns
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Hippocrate 55, bte B1.55.03, 1200, Brussels, Belgium
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Renan Orellana
- Departamento de Ciencias Químicas y Biológicas, Facultad de Ciencias de la Salud, Universidad Bernardo O'Higgins, Santiago, Chile
| | - Christiani A Amorim
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Hippocrate 55, bte B1.55.03, 1200, Brussels, Belgium.
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4
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Tissue engineering approaches for the in vitro production of spermatids to treat male infertility: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Fraser B, Peters AE, Sutherland JM, Liang M, Rebourcet D, Nixon B, Aitken RJ. Biocompatible Nanomaterials as an Emerging Technology in Reproductive Health; a Focus on the Male. Front Physiol 2021; 12:753686. [PMID: 34858208 PMCID: PMC8632065 DOI: 10.3389/fphys.2021.753686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/06/2021] [Indexed: 12/24/2022] Open
Abstract
A growing body of research has confirmed that nanoparticle (NP) systems can enhance delivery of therapeutic and imaging agents as well as prevent potentially damaging systemic exposure to these agents by modifying the kinetics of their release. With a wide choice of NP materials possessing different properties and surface modification options with unique targeting agents, bespoke nanosystems have been developed for applications varying from cancer therapeutics and genetic modification to cell imaging. Although there remain many challenges for the clinical application of nanoparticles, including toxicity within the reproductive system, some of these may be overcome with the recent development of biodegradable nanoparticles that offer increased biocompatibility. In recognition of this potential, this review seeks to present recent NP research with a focus on the exciting possibilities posed by the application of biocompatible nanomaterials within the fields of male reproductive medicine, health, and research.
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Affiliation(s)
- Barbara Fraser
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Alexandra E Peters
- Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,Priority Research Centre for Reproductive Science, School of Biomedical Science and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Jessie M Sutherland
- Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,Priority Research Centre for Reproductive Science, School of Biomedical Science and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Mingtao Liang
- Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,Priority Research Centre for Reproductive Science, School of Biomedical Science and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Diane Rebourcet
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Brett Nixon
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Robert J Aitken
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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6
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Aydos K, Aydos OS. Sperm Selection Procedures for Optimizing the Outcome of ICSI in Patients with NOA. J Clin Med 2021; 10:jcm10122687. [PMID: 34207121 PMCID: PMC8234729 DOI: 10.3390/jcm10122687] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 12/19/2022] Open
Abstract
Retrieving spermatozoa from the testicles has been a great hope for patients with non-obstructive azoospermia (NOA), but relevant methods have not yet been developed to the level necessary to provide resolutions for all cases of NOA. Although performing testicular sperm extraction under microscopic magnification has increased sperm retrieval rates, in vitro selection and processing of quality sperm plays an essential role in the success of in vitro fertilization. Moreover, sperm cryopreservation is widely used in assisted reproductive technologies, whether for therapeutic purposes or for future fertility preservation. In recent years, there have been new developments using advanced technologies to freeze and preserve even very small numbers of sperm for which conventional techniques are inadequate. The present review provides an up-to-date summary of current strategies for maximizing sperm recovery from surgically obtained testicular samples and, as an extension, optimization of in vitro sperm processing techniques in the management of NOA.
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Affiliation(s)
- Kaan Aydos
- Department of Urology, Reproductive Health Research Center, School of Medicine, University of Ankara, 06230 Ankara, Turkey
- Correspondence: ; Tel.: +90-533-748-8995
| | - Oya Sena Aydos
- Department of Medical Biology, School of Medicine, University of Ankara, 06230 Ankara, Turkey;
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7
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Thuwanut P, Comizzoli P, Pimpin A, Srituravanich W, Sereepapong W, Pruksananonda K, Taweepolcharoen C, Tuntiviriyapun P, Suebthawinkul C, Sirayapiwat P. Influence of hydrogel encapsulation during cryopreservation of ovarian tissues and impact of post-thawing in vitro culture systems in a research animal model. Clin Exp Reprod Med 2021; 48:111-123. [PMID: 34024082 PMCID: PMC8176157 DOI: 10.5653/cerm.2020.04056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 03/31/2021] [Indexed: 12/02/2022] Open
Abstract
Objective Using domestic cats as a biomedical research model for fertility preservation, the present study aimed to characterize the influences of ovarian tissue encapsulation in biodegradable hydrogel matrix (fibrinogen/thrombin) on resilience to cryopreservation, and static versus non-static culture systems following ovarian tissue encapsulation and cryopreservation on follicle quality. Methods In experiment I, ovarian tissues (n=21 animals; 567 ovarian fragments) were assigned to controls or hydrogel encapsulation with 5 or 10 mg/mL fibrinogen (5 or 10 FG). Following cryopreservation (slow freezing or vitrification), follicle viability, morphology, density, and key protein phosphorylation were assessed. In experiment II (based on the findings from experiment I), ovarian tissues (n=10 animals; 270 ovarian fragments) were encapsulated with 10 FG, cryopreserved, and in vitro cultured under static or non-static systems for 7 days followed by similar follicle quality assessments. Results In experiment I, the combination of 10 FG encapsulation/slow freezing led to greater post-thawed follicle quality than in the control group, as shown by follicle viability (66.9%±2.2% vs. 61.5%±3.1%), normal follicle morphology (62.2%±2.1% vs. 55.2%±3.5%), and the relative band intensity of vascular endothelial growth factor protein phosphorylation (0.58±0.06 vs. 0.42±0.09). Experiment II demonstrated that hydrogel encapsulation promoted follicle survival and maintenance of follicle development regardless of the culture system when compared to fresh controls. Conclusion These results provide a better understanding of the role of hydrogel encapsulation and culture systems in ovarian tissue cryopreservation and follicle quality outcomes using an animal model, paving the way for optimized approaches to human fertility preservation.
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Affiliation(s)
- Paweena Thuwanut
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA
| | - Alongkorn Pimpin
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Weerayut Srituravanich
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Wisan Sereepapong
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kamthorn Pruksananonda
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Charoen Taweepolcharoen
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Punkavee Tuntiviriyapun
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Chanakarn Suebthawinkul
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Porntip Sirayapiwat
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Research Unit of Reproductive Medicine and Fertility Preservation, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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8
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Teng K, An Q, Chen Y, Zhang Y, Zhao Y. Recent Development of Alginate-Based Materials and Their Versatile Functions in Biomedicine, Flexible Electronics, and Environmental Uses. ACS Biomater Sci Eng 2021; 7:1302-1337. [PMID: 33764038 DOI: 10.1021/acsbiomaterials.1c00116] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alginate is a natural polysaccharide that is easily chemically modified or compounded with other components for various types of functionalities. The alginate derivatives are appealing not only because they are biocompatible so that they can be used in biomedicine or tissue engineering but also because of the prospering bioelectronics that require various biomaterials to interface between human tissues and electronics or to serve as electronic components themselves. The study of alginate-based materials, especially hydrogels, have repeatedly found new frontiers over recent years. In this Review, we document the basic properties of alginate, their chemical modification strategies, and the recent development of alginate-based functional composite materials. The newly thrived functions such as ionically conductive hydrogel or 3D or 4D cell culturing matrix are emphasized among other appealing potential applications. We expect that the documentation of relevant information will stimulate scientific efforts to further develop biocompatible electronics or smart materials and to help the research domain better address the medicine, energy, and environmental challenges faced by human societies.
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Affiliation(s)
- Kaixuan Teng
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Qi An
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yao Chen
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yantao Zhao
- Institute of Orthopedics, Fourth Medical Center of the General Hospital of CPLA, Beijing 100048, China.,Beijing Engineering Research Center of Orthopedics Implants, Beijing 100048, China
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9
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Bashiri Z, Amiri I, Gholipourmalekabadi M, Falak R, Asgari H, Maki CB, Moghaddaszadeh A, Koruji M. Artificial testis: a testicular tissue extracellular matrix as a potential bio-ink for 3D printing. Biomater Sci 2021; 9:3465-3484. [DOI: 10.1039/d0bm02209h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A summary of the study design showing the extraction of extracellular matrix of testicular tissue and the printing of hydrogel scaffolds and the interaction of testicular cells on three-dimensional scaffolds.
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Affiliation(s)
- Zahra Bashiri
- Stem Cell and Regenerative Medicine Research Center
- Iran University of Medical Sciences
- Tehran
- Iran
- Department of Anatomy
| | - Iraj Amiri
- Research Center for Molecular Medicine
- Hamadan University of Medical Sciences
- Hamadan
- Iran
- Endometrium and Research Center
| | - Mazaher Gholipourmalekabadi
- Cellular and Molecular Research center
- Iran University of Medical Sciences
- Tehran
- Iran
- Department of Tissue Engineering & Regenerative Medicine
| | - Reza Falak
- Immunology Research Center (IRC)
- Institute of Immunology and Infectious Diseases
- Iran University of Medical Sciences
- Tehran
- Iran
| | - Hamidreza Asgari
- Stem Cell and Regenerative Medicine Research Center
- Iran University of Medical Sciences
- Tehran
- Iran
- Department of Anatomy
| | | | - Ali Moghaddaszadeh
- Departement of Biomedical Engineering
- Science and Research Branch
- Islamic Azad University
- Tehran
- Iran
| | - Morteza Koruji
- Stem Cell and Regenerative Medicine Research Center
- Iran University of Medical Sciences
- Tehran
- Iran
- Department of Anatomy
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10
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Chowdhury S, Ghosh S. Nanoparticles and Stem Cells. Stem Cells 2021. [DOI: 10.1007/978-981-16-1638-9_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Wyns C, Kanbar M, Giudice MG, Poels J. Fertility preservation for prepubertal boys: lessons learned from the past and update on remaining challenges towards clinical translation. Hum Reprod Update 2020; 27:433-459. [PMID: 33326572 DOI: 10.1093/humupd/dmaa050] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 09/25/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Childhood cancer incidence and survivorship are both on the rise. However, many lifesaving treatments threaten the prepubertal testis. Cryopreservation of immature testicular tissue (ITT), containing spermatogonial stem cells (SSCs), as a fertility preservation (FP) option for this population is increasingly proposed worldwide. Recent achievements notably the birth of non-human primate (NHP) progeny using sperm developed in frozen-thawed ITT autografts has given proof of principle of the reproductive potential of banked ITT. Outlining the current state of the art on FP for prepubertal boys is crucial as some of the boys who have cryopreserved ITT since the early 2000s are now in their reproductive age and are already seeking answers with regards to their fertility. OBJECTIVE AND RATIONALE In the light of past decade achievements and observations, this review aims to provide insight into relevant questions for clinicians involved in FP programmes. Have the indications for FP for prepubertal boys changed over time? What is key for patient counselling and ITT sampling based on the latest achievements in animals and research performed with human ITT? How far are we from clinical application of methods to restore reproductive capacity with cryostored ITT? SEARCH METHODS An extensive search for articles published in English or French since January 2010 to June 2020 using keywords relevant to the topic of FP for prepubertal boys was made in the MEDLINE database through PubMed. Original articles on fertility preservation with emphasis on those involving prepubertal testicular tissue, as well as comprehensive and systematic reviews were included. Papers with redundancy of information or with an absence of a relevant link for future clinical application were excluded. Papers on alternative sources of stem cells besides SSCs were excluded. OUTCOMES Preliminary follow-up data indicate that around 27% of boys who have undergone testicular sampling as an FP measure have proved azoospermic and must therefore solely rely on their cryostored ITT to ensure biologic parenthood. Auto-transplantation of ITT appears to be the first technique that could enter pilot clinical trials but should be restricted to tissue free of malignant cells. While in vitro spermatogenesis circumvents the risk linked to cancer cell contamination and has led to offspring in mice, complete spermatogenesis has not been achieved with human ITT. However, generation of haploid germ cells paves the way to further studies aimed at completing the final maturation of germ cells and increasing the efficiency of the processes. WIDER IMPLICATIONS Despite all the research done to date, FP for prepubertal boys remains a relatively young field and is often challenging to healthcare providers, patients and parents. As cryopreservation of ITT is now likely to expand further, it is important not only to acknowledge some of the research questions raised on the topic, e.g. the epigenetic and genetic integrity of gametes derived from strategies to restore fertility with banked ITT but also to provide healthcare professionals worldwide with updated knowledge to launch proper multicollaborative care pathways in the field and address clinical issues that will come-up when aiming for the child's best interest.
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Affiliation(s)
- Christine Wyns
- Andrology lab, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium.,Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Marc Kanbar
- Andrology lab, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium.,Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Maria Grazia Giudice
- Andrology lab, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium.,Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Jonathan Poels
- Andrology lab, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium.,Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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12
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Ghanbari E, Khazaei M, Ghahremani-Nasab M, Mehdizadeh A, Yousefi M. Novel therapeutic approaches of tissue engineering in male infertility. Cell Tissue Res 2020; 380:31-42. [PMID: 32043209 DOI: 10.1007/s00441-020-03178-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 01/23/2020] [Indexed: 12/25/2022]
Abstract
Male reproductive organ plays an important role in sperm production, maintenance and entry to the female reproductive tract, as well as generation and secretion of male sex hormones responsible for the health of male reproductive system. The purpose of this paper is to discuss the experimental and clinical evidence on the utilization of tissue engineering techniques in treating male infertility. Tissue engineering (TE) and regenerative medicine have developed new approaches to treat patients with reproductive disorders such as iatrogenic injuries, congenital abnormalities, and trauma. In some cases, including congenital defects and undescended testis or hypogonadism, the sperm samples are not retrieved. This makes TE a possible future strategy for restoration of male fertility. Here, we have summarized the recent advances in experimental and clinical application of cell-, tissue-, and organ-based regenerative medicine in male reproductive disorders.
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Affiliation(s)
- Elham Ghanbari
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mozafar Khazaei
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Amir Mehdizadeh
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Comprehensive Health Laboratory, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Vermeulen M, Del Vento F, Kanbar M, Pyr Dit Ruys S, Vertommen D, Poels J, Wyns C. Generation of Organized Porcine Testicular Organoids in Solubilized Hydrogels from Decellularized Extracellular Matrix. Int J Mol Sci 2019; 20:E5476. [PMID: 31684200 PMCID: PMC6862040 DOI: 10.3390/ijms20215476] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 01/15/2023] Open
Abstract
Cryopreservation of immature testicular tissue (ITT) prior to chemo/radiotherapy is now ethically accepted and is currently the only way to preserve fertility of prepubertal boys about to undergo cancer therapies. So far, three-dimensional culture of testicular cells isolated from prepubertal human testicular tissue was neither efficient nor reproducible to obtain mature spermatozoa, and ITT transplantation is not a safe option when there is a risk of cancer cell contamination of the testis. Hence, generation of testicular organoids (TOs) after cell selection is a novel strategy aimed at restoring fertility in these patients. Here, we created TOs using hydrogels developed from decellularized porcine ITT and compared cell numbers, organization and function to TOs generated in collagen only hydrogel. Organotypic culture of porcine ITT was used as a control. Rheological and mass spectrometry analyses of both hydrogels highlighted differences in terms of extracellular matrix stiffness and composition, respectively. Sertoli cells (SCs) and germ cells (GCs) assembled into seminiferous tubule-like structures delimited by a basement membrane while Leydig cells (LCs) and peritubular cells localized outside. TOs were maintained for 45 days in culture and secreted stem cell factor and testosterone demonstrating functionality of SCs and LCs, respectively. In both TOs GC numbers decreased and SC numbers increased. However, LC numbers decreased significantly in the collagen hydrogel TOs (p < 0.05) suggesting a better preservation of growth factors within TOs developed from decellularized ITT and thus a better potential to restore the reproductive capacity.
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Affiliation(s)
- Maxime Vermeulen
- Gynecology-Andrology Research Unit, Institut de Recherche Expérimentale et Clinique, Medical School, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Federico Del Vento
- Gynecology-Andrology Research Unit, Institut de Recherche Expérimentale et Clinique, Medical School, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Marc Kanbar
- Gynecology-Andrology Research Unit, Institut de Recherche Expérimentale et Clinique, Medical School, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Sébastien Pyr Dit Ruys
- Phosphorylation - MassProt Unit, Institut de Duve, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Didier Vertommen
- Phosphorylation - MassProt Unit, Institut de Duve, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Jonathan Poels
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium.
| | - Christine Wyns
- Gynecology-Andrology Research Unit, Institut de Recherche Expérimentale et Clinique, Medical School, Université Catholique de Louvain, 1200 Brussels, Belgium.
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium.
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Rezaei Topraggaleh T, Rezazadeh Valojerdi M, Montazeri L, Baharvand H. A testis-derived macroporous 3D scaffold as a platform for the generation of mouse testicular organoids. Biomater Sci 2019; 7:1422-1436. [DOI: 10.1039/c8bm01001c] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Extracellular matrix-derived scaffolds provide an efficient platform for the generation of organ-like structures.
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Affiliation(s)
| | | | - Leila Montazeri
- Department of Cell Engineering
- Cell Science Research Center
- Royan Institute for Stem Cell Biology and Technology
- ACECR
- Tehran
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology at Cell Science Research Center
- Royan Institute for Stem Cell Biology and Technology
- ACECR
- Tehran
- Iran
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15
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Special Issue Devoted to a New Field of Regenerative Medicine: Reproductive Tissue Engineering. Ann Biomed Eng 2018; 45:1589-1591. [PMID: 28567657 DOI: 10.1007/s10439-017-1862-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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de Michele F, Poels J, Vermeulen M, Ambroise J, Gruson D, Guiot Y, Wyns C. Haploid Germ Cells Generated in Organotypic Culture of Testicular Tissue From Prepubertal Boys. Front Physiol 2018; 9:1413. [PMID: 30356879 PMCID: PMC6190924 DOI: 10.3389/fphys.2018.01413] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/18/2018] [Indexed: 12/21/2022] Open
Abstract
While in mice various studies have described the completion of spermatogenesis in vitro using either organotypic culture of prepubertal testicular tissue or 3D culture of isolated cells, in humans it has not been possible to achieve germ cell differentiation from immature testicular tissue (ITT). In our study, we evaluated the ability of human ITT to differentiate via a long-term organotypic culture of frozen–thawed 1 mm3 testicular fragments from five prepubertal boys in two different culture media. Tissue and supernatants were analyzed at regular intervals up to day 139. Sertoli cell (SC) viability and maturation was evaluated using immunohistochemistry (IHC) for SOX9, GDNF, anti-Mullerian hormone (AMH) and androgen receptor (AR), and AMH concentration in supernatants. Spermatogonia (SG) and proliferating cells were identified by MAGE-A4 (for SG) and Ki67 (for proliferating cells) via immunohistochemistry (IHC). Apoptotic cells were studied by active caspase 3. To evaluate Leydig cell (LC) functionality testosterone was measured in the supernatants and steroidogenic acute regulatory protein (STAR) IHC was performed. Germ cell differentiation was evaluated on Hematoxylin-Eosin histological sections, via IHC for synaptonemal complex 3 (SYCP3) for spermatocytes, Protein boule-like (BOLL) for spermatocytes and round spermatids, angiotensin-converting enzyme (ACE), protamine 2 and transition protein 1 (for elongated spermatids) and via chromogenic in situ hybridization (CISH). We reported the generation of meiotic and postmeiotic cells after 16 days of culture, as shown by the histological analyses, the presence of differentiation markers and the increase of haploid germ cells. We showed SC viability and maturation by a decrease of AMH secretion in the supernatants (p ≤ 0.001) while the number of SOX9 positive cells did not show any variation. A decrease of spermatogonia (p ≤ 0.001) was observed. The number of apoptotic cells did not vary. LC functionality was shown by the increase in STAR expression (p ≤ 0.007) and a peak in testosterone secretion, followed by a reduction (p ≤ 0.001) with stabilization. According to our knowledge, this is the first report of generation of haploid cells in human ITT. Differentiating germ cells have to be further evaluated for their ability to complete differentiation, their fecundability and epigenetic characteristics.
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Affiliation(s)
- Francesca de Michele
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium
| | - Jonathan Poels
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Maxime Vermeulen
- Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium
| | - Jérôme Ambroise
- Institut de Recherche Expérimentale et Clinique (IREC), Centre de Technologies Moléculaires Appliquées (CTMA), Brussels, Belgium
| | - Damien Gruson
- Department of Clinical Biochemistry, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Yves Guiot
- Department of Anatomopathology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Christine Wyns
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium
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17
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In Vivo Performance of Decellularized Vascular Grafts: A Review Article. Int J Mol Sci 2018; 19:ijms19072101. [PMID: 30029536 PMCID: PMC6073319 DOI: 10.3390/ijms19072101] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/16/2018] [Accepted: 07/16/2018] [Indexed: 12/12/2022] Open
Abstract
Due to poor vessel quality in patients with cardiovascular diseases, there has been an increased demand for small-diameter tissue-engineered blood vessels that can be used as replacement grafts in bypass surgery. Decellularization techniques to minimize cellular inflammation have been applied in tissue engineering research for the development of small-diameter vascular grafts. The biocompatibility of allogenic or xenogenic decellularized matrices has been evaluated in vitro and in vivo. Both short-term and long-term preclinical studies are crucial for evaluation of the in vivo performance of decellularized vascular grafts. This review offers insight into the various preclinical studies that have been performed using decellularized vascular grafts. Different strategies, such as surface-modified, recellularized, or hybrid vascular grafts, used to improve neoendothelialization and vascular wall remodeling, are also highlighted. This review provides information on the current status and the future development of decellularized vascular grafts.
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18
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Tharmalingam MD, Jorgensen A, Mitchell RT. Experimental models of testicular development and function using human tissue and cells. Mol Cell Endocrinol 2018; 468:95-110. [PMID: 29309804 DOI: 10.1016/j.mce.2017.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/21/2017] [Accepted: 12/21/2017] [Indexed: 12/17/2022]
Abstract
The mammalian testis has two main roles, production of gametes for reproduction and synthesis of steroid- and peptide hormones for masculinization. These processes are tightly regulated and involve complex interactions between a number of germ and somatic cell-types that comprise a unique microenvironment known as the germ stem cell niche. In humans, failure of normal testicular development or function is associated with susceptibility to a variety of male reproductive disorders including disorders of sex development, infertility and testicular cancer. Whilst studies in rodent models have provided detailed insight into the signaling pathways and molecular mechanisms that regulate the testis, there are important species differences in testicular development, function and reproductive disorders that highlight the need for suitable experimental models utilising human testicular tissues or cells. In this review, we outline experimental approaches used to sustain cells and tissue from human testis at different developmental time-points and discuss relevant end-points. These include survival, proliferation and differentiation of cell lineages within the testis as well as autocrine, paracrine and endocrine function. We also highlight the utility of these experimental approaches for modelling the effects of environmental exposures on testicular development and function.
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Affiliation(s)
- Melissa D Tharmalingam
- MRC Centre for Reproductive Health, The University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland, UK
| | - Anne Jorgensen
- Department of Growth and Reproduction, University Hospital of Copenhagen, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Rod T Mitchell
- MRC Centre for Reproductive Health, The University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland, UK; Department of Endocrinology and Diabetes, Edinburgh Royal Hospital for Sick Children, 9 Sciennes Road, Edinburgh, EH9 1LF, Scotland, UK.
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19
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Medrano JV, Andrés MDM, García S, Herraiz S, Vilanova-Pérez T, Goossens E, Pellicer A. Basic and Clinical Approaches for Fertility Preservation and Restoration in Cancer Patients. Trends Biotechnol 2018; 36:199-215. [DOI: 10.1016/j.tibtech.2017.10.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 10/13/2017] [Accepted: 10/18/2017] [Indexed: 12/20/2022]
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20
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Del Vento F, Vermeulen M, de Michele F, Giudice MG, Poels J, des Rieux A, Wyns C. Tissue Engineering to Improve Immature Testicular Tissue and Cell Transplantation Outcomes: One Step Closer to Fertility Restoration for Prepubertal Boys Exposed to Gonadotoxic Treatments. Int J Mol Sci 2018; 19:ijms19010286. [PMID: 29346308 PMCID: PMC5796232 DOI: 10.3390/ijms19010286] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 01/16/2018] [Accepted: 01/16/2018] [Indexed: 12/15/2022] Open
Abstract
Despite their important contribution to the cure of both oncological and benign diseases, gonadotoxic therapies present the risk of a severe impairment of fertility. Sperm cryopreservation is not an option to preserve prepubertal boys’ reproductive potential, as their seminiferous tubules only contain spermatogonial stem cells (as diploid precursors of spermatozoa). Cryobanking of human immature testicular tissue (ITT) prior to gonadotoxic therapies is an accepted practice. Evaluation of cryopreserved ITT using xenotransplantation in nude mice showed the survival of a limited proportion of spermatogonia and their ability to proliferate and initiate differentiation. However, complete spermatogenesis could not be achieved in the mouse model. Loss of germ cells after ITT grafting points to the need to optimize the transplantation technique. Tissue engineering, a new branch of science that aims at improving cellular environment using scaffolds and molecules administration, might be an approach for further progress. In this review, after summarizing the lessons learned from human prepubertal testicular germ cells or tissue xenotransplantation experiments, we will focus on the benefits that might be gathered using bioengineering techniques to enhance transplantation outcomes by optimizing early tissue graft revascularization, protecting cells from toxic insults linked to ischemic injury and exploring strategies to promote cellular differentiation.
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Affiliation(s)
- Federico Del Vento
- Gynecology-Andrology Unit, Medical School, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium; (F.D.V.); (M.V.); (F.d.M.); (M.G.G.)
| | - Maxime Vermeulen
- Gynecology-Andrology Unit, Medical School, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium; (F.D.V.); (M.V.); (F.d.M.); (M.G.G.)
| | - Francesca de Michele
- Gynecology-Andrology Unit, Medical School, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium; (F.D.V.); (M.V.); (F.d.M.); (M.G.G.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium;
| | - Maria Grazia Giudice
- Gynecology-Andrology Unit, Medical School, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium; (F.D.V.); (M.V.); (F.d.M.); (M.G.G.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium;
| | - Jonathan Poels
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium;
| | - Anne des Rieux
- Advanced Drug Delivery and Biomaterials Unit, Louvain Drug Research Institute, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Christine Wyns
- Gynecology-Andrology Unit, Medical School, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium; (F.D.V.); (M.V.); (F.d.M.); (M.G.G.)
- Department of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium;
- Correspondence: ; Tel.: +32-2-764-95-01
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21
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Alves-Lopes JP, Stukenborg JB. Testicular organoids: a new model to study the testicular microenvironment in vitro? Hum Reprod Update 2017; 24:176-191. [PMID: 29281008 DOI: 10.1093/humupd/dmx036] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/20/2017] [Accepted: 11/27/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND In recent decades, a broad range of strategies have been applied to model the testicular microenvironment in vitro. These models have been utilized to study testicular physiology and development. However, a system that allows investigations into testicular organogenesis and its impact in the spermatogonial stem-cell (SSC) niche in vitro has not been developed yet. Recently, the creation of tissue-specific organ-like structures called organoids has resurged, helping researchers to answer scientific questions that previous in vitro models could not help to elucidate. So far, a small number of publications have concerned the generation of testicular organoids and their application in the field of reproductive medicine and biology. OBJECTIVE AND RATIONALE Here, we aim to elucidate whether testicular organoids might be useful in answering current scientific questions about the regulation and function of the SSC niche as well as germ cell proliferation and differentiation, and whether or not the existing in vitro models are already sufficient to address them. Moreover, we would like to discuss how an organoid system can be a better solution to address these prominent scientific problems in our field, by the creation of a rationale parallel to those in other areas where organoid systems have been successfully utilized. SEARCH METHODS We comprehensively reviewed publications regarding testicular organoids and the methods that most closely led to the formation of these organ-like structures in vitro by searching for the following terms in both PubMed and the Web of Science database: testicular organoid, seminiferous tubule 3D culture, Sertoli cell 3D culture, testicular cord formation in vitro, testicular morphogenesis in vitro, germ cell 3D culture, in vitro spermatogenesis, testicular de novo morphogenesis, seminiferous tubule de novo morphogenesis, seminiferous tubule-like structures, testicular in vitro model and male germ cell niche in vitro, with no restrictions to any publishing year. The inclusion criteria were based on the relation with the main topic (i.e. testicular organoids, testicular- and seminiferous-like structures as in vitro models), methodology applied (i.e. in vitro culture, culture dimensions (2D, 3D), testicular cell suspension or fragments) and outcome of interest (i.e. organization in vitro). Publications about grafting of testicular tissue, germ-cell transplantation and female germ-cell culture were excluded. OUTCOMES The application of organoid systems is making its first steps in the field of reproductive medicine and biology. A restricted number of publications have reported and characterized testicular organoids and even fewer have denominated such structures by this method. However, we detected that a clear improvement in testicular cell reorganization is recognized when 3D culture conditions are utilized instead of 2D conditions. Depending on the scientific question, testicular organoids might offer a more appropriate in vitro model to investigate testicular development and physiology because of the easy manipulation of cell suspensions (inclusion or exclusion of a specific cell population), the fast reorganization of these structures and the controlled in vitro conditions, to the same extent as with other organoid strategies reported in other fields. WIDER IMPLICATIONS By way of appropriate research questions, we might use testicular organoids to deepen our basic understanding of testicular development and the SSC niche, leading to new methodologies for male infertility treatment.
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Affiliation(s)
- João Pedro Alves-Lopes
- Department of Women's and Children's Health, NORDFERTIL Research Lab Stockholm, Paediatric Endocrinology Unit, Q2:08, Karolinska Institutet and Karolinska University Hospital, SE-17176 Stockholm, Sweden
| | - Jan-Bernd Stukenborg
- Department of Women's and Children's Health, NORDFERTIL Research Lab Stockholm, Paediatric Endocrinology Unit, Q2:08, Karolinska Institutet and Karolinska University Hospital, SE-17176 Stockholm, Sweden
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22
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Abstract
PURPOSE OF REVIEW This review evaluates the state of the art in terms of challenges and strategies used to restore fertility with spermatogonial stem cells retrieved from prepubertal boys affected by cancer. Although these boys do not yet produce spermatozoa, the only option to preserve their fertility is cryopreservation of spermatogonial stem cells in the form of testicular cell suspensions or whole tissue pieces. Different techniques have been described to achieve completion of spermatogenesis from human, spermatogonial stem cells but none is yet ready for clinical application. A crucial point to address is gaining a full understanding of spermatogonial stem cell niche pathophysiology, where germ cells undergo proliferation and differentiation. Various fertility restoration approaches will be presented depending on the presence of an intact niche, dissociated niche, or reconstituted niche. RECENT FINDINGS Testicular organoids open the way to providing further insights into the niche. They can recreate the three-dimensional architecture of the testicular microenvironment in vitro, allowing a large number of applications, from physiology to drug toxicity investigations. SUMMARY In addition to the full elucidation of the niche microenvironment, achieving fertility restoration from cryopreserved human spermatogonial stem cells implies overcoming other important challenges. Testicular organoids might prove to be essential tools to progress in this field.
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Affiliation(s)
- Francesca de Michele
- aInstitut de Recherche Expérimentale et Clinique, Université Catholique de Louvain bDepartment of Gynecology-Andrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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Ibtisham F, Wu J, Xiao M, An L, Banker Z, Nawab A, Zhao Y, Li G. Progress and future prospect of in vitro spermatogenesis. Oncotarget 2017; 8:66709-66727. [PMID: 29029549 PMCID: PMC5630449 DOI: 10.18632/oncotarget.19640] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 07/12/2017] [Indexed: 12/25/2022] Open
Abstract
Infertility has become a major health issue in the world. It affects the social life of couples and of all infertility cases; approximately 40–50% is due to “male factor” infertility. Male infertility could be due to genetic factors, environment or due to gonadotoxic treatment. Developments in reproductive biotechnology have made it possible to rescue fertility and uphold biological fatherhood. In vitro production of haploid male germ cell is a powerful tool, not only for the treatment of infertility including oligozoospermic or azoospermic patient, but also for the fertility preservation in pre-pubertal boys whose gonadal function is threatened by gonadotoxic therapies. Genomic editing of in-vitro cultured germ cells could also potentially cure flaws in spermatogenesis due to genomic mutation. Furthermore, this ex-vivo maturation technique with genomic editing may be used to prevent paternal transmission of genomic diseases. Here, we summarize the historical progress of in vitro spermatogenesis research by using organ and cell culture techniques and the future clinical application of in vitro spermatogenesis.
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Affiliation(s)
- Fahar Ibtisham
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Jiang Wu
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Mei Xiao
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Lilong An
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Zachary Banker
- Foreign Language College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Aamir Nawab
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Yi Zhao
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Guanghui Li
- Agricultural College, Guangdong Ocean University, Zhanjiang, Guangdong, China
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