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Unraveling the Inconsistencies of Cardiac Differentiation Efficiency Induced by the GSK3? Inhibitor CHIR99021 in Human Pluripotent Stem Cells.


ABSTRACT: Cardiac differentiation efficiency is hampered by inconsistencies and low reproducibility. We analyzed the differentiation process of multiple human pluripotent stem cell (hPSC) lines in response to dynamic GSK3? inhibition under varying cell culture conditions. hPSCs showed strong differences in cell-cycle profiles with varying culture confluency. hPSCs with a higher percentage of cells in the G1 phase of the cell cycle exhibited cell death and required lower doses of GSK3? inhibitors to induce cardiac differentiation. GSK3? inhibition initiated cell-cycle progression via cyclin D1 and modulated both Wnt signaling and the transcription factor (TCF) levels, resulting in accelerated or delayed mesoderm differentiation. The TCF levels were key regulators during hPSC differentiation with CHIR99021. Our results explain how differences in hPSC lines and culture conditions impact cell death and cardiac differentiation. By analyzing the cell cycle, we were able to select for highly cardiogenic hPSC lines and increase the experimental reproducibility by predicting differentiation outcomes.

SUBMITTER: Laco F 

PROVIDER: S-EPMC5989659 | biostudies-other | 2018 Jun

REPOSITORIES: biostudies-other

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Unraveling the Inconsistencies of Cardiac Differentiation Efficiency Induced by the GSK3β Inhibitor CHIR99021 in Human Pluripotent Stem Cells.

Laco Filip F   Woo Tsung Liang TL   Zhong Qixing Q   Szmyd Radoslaw R   Ting Sherwin S   Khan Fahima Jaleel FJ   Chai Christina L L CLL   Reuveny Shaul S   Chen Allen A   Oh Steve S  

Stem cell reports 20180426 6


Cardiac differentiation efficiency is hampered by inconsistencies and low reproducibility. We analyzed the differentiation process of multiple human pluripotent stem cell (hPSC) lines in response to dynamic GSK3β inhibition under varying cell culture conditions. hPSCs showed strong differences in cell-cycle profiles with varying culture confluency. hPSCs with a higher percentage of cells in the G1 phase of the cell cycle exhibited cell death and required lower doses of GSK3β inhibitors to induce  ...[more]

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