Volume 11, Issue 7 (10-2013)                   IJRM 2013, 11(7): 551-0 | Back to browse issues page

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Akhondi M M, Mohazzab A, Jeddi-Tehrani M, Sadeghi M R, Eidi A, Khodadadi A et al . Propagation of human germ stem cells in long-term culture. IJRM 2013; 11 (7) :551-0
URL: http://ijrm.ir/article-1-444-en.html
Propagation of human germ stem cells in long-term culture
Mohammad Mehdi Akhondi1 , Arash Mohazzab1 , Mahmood Jeddi-Tehrani2 , Mohammad Reza Sadeghi2 , Akram Eidi3 , Abbas Khodadadi4 , Zeinab Piravar * 5
1- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
2- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
3- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
4- Research and Preparation Center, Iranian Tissue Bank, Tehran University of Medical Science, Tehran, Iran
5- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran , saba.piravar@gmail.com
Abstract:   (3823 Views)
Background: Spermatogonial stem cells (SSCs), a subset of undifferentiated type A spermatogonia, are the foundation of complex process of spermatogenesis and could be propagated in vitro culture conditions for long time for germ cell transplantation and fertility preservation.
Objective: The aim of this study was in vitro propagation of human spermatogonial stem cells (SSCs) and improvement of presence of human Germ Stem Cells (hGSCs) were assessed by specific markers POU domain, class 5, transcription factor 1 (POU5F1), also known as Octamer-binding transcription factor 4 (Oct-4) and PLZF (Promyelocytic leukaemia zinc finger protein).
Materials and Methods: Human testicular cells were isolated by enzymatic digestion (Collagenase IV and Trypsin). Germ cells were cultured in Stem-Pro 34 media supplemented by growth factors such as glial cell line-derived neurotrophic factor, basic fibroblast growth factor, epidermal growth factor and leukemia inhibitory factor to support self-renewal divisions. Germline stem cell clusters were passaged and expanded every week. Immunofluorecent study was accomplished by Anti-Oct4 antibody through the culture. The spermatogonial stem cells genes expression, PLZF, was studied in testis tissue and germ stem cells entire the culture.
Results: hGSCs clusters from a brain dead patient developed in testicular cell culture and then cultured and propagated up to 6 weeks. During the culture Oct4 were a specific marker for identification of hGSCs in testis tissue. Expression of PLZF was applied on RNA level in germ stem cells.
Conclusion: hGSCs indicated by SSCs specific marker can be cultured and propagated for long-term in vitro conditions.
Keywords: Human germ stem cells, Human Spermatogonial stem cells, SFM, GDNF, LIF, OCT-4, PLZF.
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Type of Study: Original Article |
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