Generation of embryoid bodies from mouse embryonic stem cells cultured on STO feeder cells |
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Authors: | Zhou Qing-Jun Shao Jian-Zhong Xiang Li-Xin Hu Ruo-Zhen Lu Yong-Liang Yao Hang Dai Li-Cheng |
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Affiliation: | College of Life Science, Zhejiang University, Hangzhou, Zhejiang 310012, PR China. |
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Abstract: | Embryoid bodies, which are similar to post-implantation egg-cylinder stage embryos, provide a model for the study of embryo development and stem cell differentiation. We describe here a novel method for generating embryoid bodies from murine embryonic stem (ES) cells cultured on the STO feeder layer. The ES cells grew into compact aggregates in the first 3 days of coculture, then became simple embryoid bodies (EBs) possessing primitive endoderm on the outer layer. They finally turned into cystic embryoid bodies after being transferred to Petri dishes for 1-3 days. Evaluation of the EBs in terms of morphology and differentiating potential indicates that they were typical in structure and could generate cells derived from the three germ layers. The results show that embryoid bodies can form not only in suspension culture but also directly from ES cells cultured on the STO feeder layer. |
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Keywords: | Embryonic stem cell STO feeder layer Embryoid body Morphology Differentiating potential |
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