The Suppression of Medium Acidosis Improves the Maintenance and Differentiation of Human Pluripotent Stem Cells at High Density in Defined Cell Culture Medium.

Abstract:

:Cell density has profound impacts on the cell culture practices of human pluripotent stem cells. The regulation of cell growth, cell death, pluripotency and differentiation converge at high density, but it is largely unknown how different regulatory mechanisms act at this stage. We use a chemically defined medium to systemically examine cellular activities and the impact of medium components in high-density culture. We show that medium acidosis is the main factor that alters cell cycle, gene expression and cellular metabolism at high cell density. The low medium pH leads to inhibition of glucose consumption, cell cycle arrest, and subsequent cell death. At high cell density, the suppression of medium acidosis with sodium bicarbonate (NaHCO3) significantly increases culture capacity for stem cell survival, derivation, maintenance and differentiation. Our study provides a simple and effective tool to improve stem cell maintenance and applications.

journal_name

Int J Biol Sci

authors

Liu W,Ren Z,Lu K,Song C,Cheung ECW,Zhou Z,Chen G

doi

10.7150/ijbs.24681

subject

Has Abstract

pub_date

2018-04-05 00:00:00

pages

485-496

issue

5

issn

1449-2288

pii

ijbsv14p0485

journal_volume

14

pub_type

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