Author/Authors :
Sisakhtnezhad، Sajjad نويسنده Faculty of Science,Department of Biology,Razi University,Kermanshah,Iran , , Bahrami، Ahmad R. نويسنده Faculty of Science, Institute of Biotechnology,Department of Biology,Ferdowsi University of Mashhad,Mashhad,Iran , , Matin، Maryam M. نويسنده Faculty of Science, Institute of Biotechnology,Department of Biology,Ferdowsi University of Mashhad,Mashhad,Iran , , Dehghani، Hesam نويسنده Institute of Biotechnology, Faculty of Veterinary Medicine,Department of Basic Sciences,Ferdowsi University of Mashhad,Mashhad,Iran , , B. Rassouli، Fatemeh نويسنده Faculty of Science, Institute of Biotechnology,Department of Biology,Ferdowsi University of Mashhad,Mashhad,Iran , , Momeni-Moghaddamd، Madjid نويسنده Faculty of Science,Department of Biology,Hakim Sabzevari University,Sabzevar,Iran , , Boozarpour، Sohrab نويسنده Faculty of Basic Science,Department of Biology,Gonbad Kavous University,Gonbad Kavous,Iran ,
Abstract :
Poultry spermatogonial stem cells (SSCs) have the potential to serve as a model for studying the basic biology of SSC and they can also be used for biotechnological purposes. However, the small number of SSCs and the presence of the testicular somatic cells with SSCs have limited their applications. Therefore, this study was undertaken for the first time to investigate the effect of a serumfree medium supplemented with a combination of specific growth factors and B27 on the proliferation and enrichment of newborn chicken SSCs in vitro. Newborn chicken testicular cells were cultured in a serumfree DMEM, supplemented with GDNF, bFGF, LIF, and EGF growth factors and also B27 as an alternative for FBS. Presence and maintenance of the SSCs in the enriched cultures were evaluated by detection of alkaline phosphatase (AP) activity and ASZ1, POU5F1, CVH and GPR125 gene expression. A small number of clusters and colonies were emerged in testicular cell cultures before treatment with the enriched cell culture medium. Enrichment of the DMEM with the above indicated factors strongly promoted the proliferation of the chicken SSCs. Moreover, this culture condition declined attachment and maintenance of the testicular somatic cells and thus they decreased gradually in the cultures. The enriched SSCs were positive for AP activity and with detectable levels of ASZ1, POU5F1, CVH and GPR125 gene expression. This study shows that serumfree medium supplemented with a combination of B27 and the above indicated growth factors induces proliferation and enrichment of chicken SSCs in vitro in a short period of time.
Keywords :
Proliferation , Spermatogonial stem cell , Growth factors , Gallus gallus , B27