Detecting Genetic Mosaicism in Cultures of Human Pluripotent Stem Cells

Autor: Duncan Baker, Adam J. Hirst, Paul J. Gokhale, Miguel A. Juarez, Steve Williams, Mark Wheeler, Kerry Bean, Thomas F. Allison, Harry D. Moore, Peter W. Andrews, Ivana Barbaric
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Stem Cell Reports, Vol 7, Iss 5, Pp 998-1012 (2016)
Druh dokumentu: article
ISSN: 2213-6711
DOI: 10.1016/j.stemcr.2016.10.003
Popis: Genetic changes in human pluripotent stem cells (hPSCs) gained during culture can confound experimental results and potentially jeopardize the outcome of clinical therapies. Particularly common changes in hPSCs are trisomies of chromosomes 1, 12, 17, and 20. Thus, hPSCs should be regularly screened for such aberrations. Although a number of methods are used to assess hPSC genotypes, there has been no systematic evaluation of the sensitivity of the commonly used techniques in detecting low-level mosaicism in hPSC cultures. We have performed mixing experiments to mimic the naturally occurring mosaicism and have assessed the sensitivity of chromosome banding, qPCR, fluorescence in situ hybridization, and digital droplet PCR in detecting variants. Our analysis highlights the limits of mosaicism detection by the commonly employed methods, a pivotal requirement for interpreting the genetic status of hPSCs and for setting standards for safe applications of hPSCs in regenerative medicine.
Databáze: Directory of Open Access Journals