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PLoS One ; 19(6): e0299365, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38875182

RESUMEN

With a view to developing a much-needed non-invasive method for monitoring the healthy pluripotent state of human stem cells in culture, we undertook proteomic analysis of the waste medium from cultured embryonic (Man-13) and induced (Rebl.PAT) human pluripotent stem cells (hPSCs). Cells were grown in E8 medium to maintain pluripotency, and then transferred to FGF2 and TGFß deficient E6 media for 48 hours to replicate an early, undirected dissolution of pluripotency. We identified a distinct proteomic footprint associated with early loss of pluripotency in both hPSC lines, and a strong correlation with changes in the transcriptome. We demonstrate that multiplexing of four E8- against four E6- enriched secretome biomarkers provides a robust, diagnostic metric for the pluripotent state. These biomarkers were further confirmed by Western blotting which demonstrated consistent correlation with the pluripotent state across cell lines, and in response to a recovery assay.


Asunto(s)
Biomarcadores , Células Madre Pluripotentes , Proteómica , Humanos , Proteómica/métodos , Células Madre Pluripotentes/metabolismo , Células Madre Pluripotentes/citología , Biomarcadores/metabolismo , Línea Celular , Proteoma/metabolismo , Proteoma/análisis , Células Madre Pluripotentes Inducidas/metabolismo , Células Madre Pluripotentes Inducidas/citología
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