Aneuploidy is permissive for hepatocyte-like cell differentiation from human induced pluripotent stem cells

被引：14
作者：
Noto F.K. [1 ]
Determan M.R. [1 ]
Cai J. [1 ]
Cayo M.A. [1 ]
Mallanna S.K. [1 ]
Duncan S.A. [1 ]
机构：
[1] Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226
来源：
BMC Research Notes | / 7卷 / 1期
基金：
美国国家卫生研究院;
关键词：
Aneuploidy; Hepatocyte differentiation; iPSC;
D O I：
10.1186/1756-0500-7-437
中图分类号：
学科分类号：
摘要：
Background: The characterization of induced pluripotent stem cells (iPSCs) and embryonic stem cells (ESCs) routinely includes analyses of chromosomal integrity. The belief is that pluripotent stem cells best suited to the generation of differentiated derivatives should display a euploid karyotype; although, this does not appear to have been formally tested. While aneuploidy is commonly associated with cell transformation, several types of somatic cells, including hepatocytes, are frequently aneuploid and variation in chromosomal content does not contribute to a transformed phenotype. This insight has led to the proposal that dynamic changes in the chromosomal environment may be important to establish genetic diversity within the hepatocyte population and such diversity may facilitate an adaptive response by the liver to various insults. Such a positive contribution of aneuploidy to liver function raises the possibility that, in contrast to existing dogma, aneuploid iPSCs may be capable of generating hepatocyte-like cells that display hepatic activities. Results: We examined whether a human iPSC line that had multiple chromosomal aberrations was competent to differentiate into hepatocytes and found that loss of normal chromosomal content had little impact on the production of hepatocyte-like cells from iPSCs. Conclusions: iPSCs that harbor an abnormal chromosomal content retain the capacity to generate hepatocyte-like cells with high efficiency. © 2014 Noto et al.; licensee BioMed Central Ltd.
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