Journal
NATURE BIOTECHNOLOGY
Volume 25, Issue 6, Pages 681-686Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nbt1310
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Poor survival of human embryonic stem (hES) cells after cell dissociation is an obstacle to research, hindering manipulations such as subcloning. Here we show that application of a selective Rho-associated kinase (ROCK) inhibitor(1,2), Y-27632, to hES cells markedly diminishes dissociation- induced apoptosis, increases cloning efficiency (from similar to 1% to similar to 27%) and facilitates subcloning after gene transfer. Furthermore, dissociated hES cells treated with Y-27632 are protected from apoptosis even in serum-free suspension (SFEB) culture(3) and form floating aggregates. We demonstrate that the protective ability of Y-27632 enables SFEB-cultured hES cells to survive and differentiate into Bf1(+) cortical and basal telencephalic progenitors, as do SFEB-cultured mouse ES cells.
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