title: Feeder layer- and serum-free culture of rhesus monkey embryonic stem cells.
abstract: The common culture system of rhesus monkey embryonic stem (rES) cells depends largely on feeder cells and serum, which limits the research and application of rES cells. This study reports a feeder layer-free and serum-free system for culture of rES cells. rES cells could be cultured through at least 22 passages on laminin in medium supplemented with serum replacement (SR), basic fibroblast growth factor (bFGF) and transforming growth factor beta1 (TGFbeta1), and maintained stable proliferation rates and normal karyotypes, while displaying all the embryonic stem cell characteristics including morphology, alkaline phosphatase (AKP), Oct-4, cell surface markers SSEA-3, SSEA-4, TRA-1-60 and TRA-1-81, and formed cystic embryoid bodies in vitro. In addition, the studies showed that TGFbeta1, bFGF and laminin are necessary for maintaining the undifferentiated growth of rES cells in long-term culture. Moreover, withdrawal of TGFbeta1 increased the differentiation rate by decreasing the expression of integrins. Therefore, this system would provide a well-defined culture system for rES cells, and would facilitate research into self-renewal and differentiation mechanisms of rES cells.
authors.affiliation: Department of Reproduction and Development, Kunming Institute of Zoology and Kunming Primate Research Centre, Chinese Academy of Sciences, Kunming, Yunnan, China. sleevexz@yahoo.com.cn
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Zhang
authors.forename: Shufen
authors.initials: S
authors.lastname: Wang
authors.forename: Shihua
authors.initials: S
authors.lastname: Yang
authors.forename: Tianqing
authors.initials: T
authors.lastname: Li
authors.forename: Shaohui
authors.initials: S
authors.lastname: Ji
authors.forename: Hongwei
authors.initials: H
authors.lastname: Chen
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Lifang
authors.initials: L
authors.lastname: Jin
authors.forename: Yunhua
authors.initials: Y
authors.lastname: Xie
authors.forename: Zhixing
authors.initials: Z
authors.lastname: Hu
authors.forename: Jianxiang
authors.initials: J
authors.lastname: Chi
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003470:Culture Media / Q000494:pharmacology*; D016895:Culture Media, Serum-Free / Q000494:pharmacology*; D004622:Embryo, Mammalian / Q000166:cytology; D016326:Extracellular Matrix Proteins / Q000494:pharmacology; D005260:Female; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D007621:Karyotyping; D007797:Laminin / Q000494:pharmacology; D008253:Macaca mulatta; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects; D016212:Transforming Growth Factor beta / Q000494:pharmacology; D000099222:betaIG-H3 Protein
chemical_list: D003470:Culture Media; D016895:Culture Media, Serum-Free; D016326:Extracellular Matrix Proteins; D016222:Fibroblast Growth Factor 2; D007797:Laminin; D016212:Transforming Growth Factor beta; D000099222:betaIG-H3 Protein