Systematic assessment of variability in the proteome of iPSC derivatives

Autor: Stephanie D. Beekhuis-Hoekstra, Kyoko Watanabe, Josefin Werme, Christiaan A. de Leeuw, Iryna Paliukhovich, Ka Wan Li, Frank Koopmans, August B. Smit, Danielle Posthuma, Vivi M. Heine
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Stem Cell Research, Vol 56, Iss , Pp 102512- (2021)
Druh dokumentu: article
ISSN: 1873-5061
DOI: 10.1016/j.scr.2021.102512
Popis: The use of induced pluripotent stem cells (iPSC) to model human complex diseases is gaining popularity as it allows investigation of human cells that are otherwise sparsely available. However, due to its laborious and cost intensive nature, iPSC research is often plagued by limited sample size and putative large variability between clones, decreasing statistical power for detecting experimental effects. Here, we investigate the source and magnitude of variability in the proteome of parallel differentiated astrocytes using mass spectrometry. We compare three possible sources of variability: inter-donor variability, inter- and intra-clonal variability, at different stages of maturation. We show that the interclonal variability is significantly smaller than the inter-donor variability, and that including more donors has a much larger influence on statistical power than adding more clones per donor. Our results provide insight into the sources of variability at protein level between iPSC samples derived in parallel and will aid in optimizing iPSC studies.
Databáze: Directory of Open Access Journals