title: Ras/ERK1/2 pathway regulates the self-renewal of dairy goat spermatogonia stem cells.
abstract: Spermatogonia stem cells (SSCs), also named the male germline stem cells (mGSCs), which is located at the base of the seminiferous tubules of testis, is the basis for generating sperm steadily in male animals. Currently, there are some preliminary study on the self-renewal and differentiation of SSCs, but further mechanism, especially in large animals, has not been clearly understood. Ras/ERK1/2 pathway is widely distributed in multiple cells in vivo. It plays an important role in cell proliferation, differentiation and so on. However, the study on the function for the self-renewal of dairy goats SSCs has not been investigated. In this study, the dairy goat SSCs characterization were evaluated by semi-RT-PCR, alkaline phosphatase (AP) staining, and immunofluorescence staining. Then, Ras/ERK1/2 pathway was blocked by specific MEK1/2 inhibitor PD0325901. We analyzed the proliferation by cell number, cell growth curve, Brdu incorporation assay, and cell cycle analysis. The results showed that the proliferation was significantly inhibited by PD0325901. Cell apoptosis induced by blocking the Ras/ERK1/2 pathway was analyzed by TUNEL. The expression of ETV5 and BCL6B, the downstream gene of Ras/ERK1/2 pathway, was downregulated. This study suggest that the Ras/ERK1/2 pathway plays a critical role in maintaining the self-renewal of dairy goat SSCs via regulation of ETV5 and BCL6B. This study laid a foundation for insights into the mechanism of SSCs self-renewal comprehensively.
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Niu
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Liming
authors.initials: L
authors.lastname: Zheng
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Siyu
authors.initials: S
authors.lastname: Wu
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Mu
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Fanglin
authors.initials: F
authors.lastname: Ma
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Wencong
authors.initials: W
authors.lastname: Song
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Haijing
authors.initials: H
authors.lastname: Zhu
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Wu
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: He
authors.affiliation: College of Veterinary MedicineShaanxi Centre of Stem Cells Engineering and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China jinlianhua@nwsuaf.edu.cn.
authors.forename: Jinlian
authors.initials: J
authors.lastname: Hua
mesh_terms: D000818:Animals; D017209:Apoptosis; D015153:Blotting, Western; D002453:Cell Cycle; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D005455:Fluorescent Antibody Technique; D006041:Goats; D007124:Immunoenzyme Techniques; D020935:MAP Kinase Signaling System / Q000502:physiology*; D008297:Male; D012333:RNA, Messenger / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013093:Spermatogonia / Q000166:cytology* / Q000378:metabolism; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism; D013737:Testis / Q000166:cytology* / Q000378:metabolism; D018631:ras Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D012333:RNA, Messenger; D018631:ras Proteins