Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 351, Issue 2, Pages 321-327Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2006.09.171
Keywords
human embryonic stem cells; smooth muscle cells; differentiation; monolayer culture; retinoic acid
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Smooth muscle cell (SMC) plays critical roles in many human diseases, an in vitro system that recapitulates human SMC differentiation would be invaluable for exploring molecular mechanisms leading to the human diseases. We report a directed and highly efficient SMC differentiation system by treating the monolayer-cultivated human embryonic stem cells (hESCs) with all-trans retinoid acid (atRA). When the hESCs were cultivated in differentiation medium containing 10 mu M RA, more than 93% of the cells expressed SMC-marker genes along with the steadily accumulation of such SMC-specific proteins as SM alpha-aetin and SM-MHC. The fully differentiated SMCs were stable in phenotype and capable of contraction. This inducible and highly efficient in vitro human SMC system could be an important resource to study the mechanisms of SMC phenotype determination in human. (c) 2006 Elsevier Inc. All rights reserved.
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