Genomic imprinting defect in Zfp57 mutant iPS cell lines
Carol M. McDonald, Lizhi Liu, Lijuan Xiao and 2 more
Stem Cell Research · 2016
doi:10.1016/j.scr.2016.01.018 (opens in a new tab)
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Abstract
ZFP57 maintains genomic imprinting in mouse embryos and ES cells. To test its roles during iPS reprogramming, we derived iPS clones by utilizing retroviral infection to express reprogramming factors in mouse MEF cells. After analyzing four imprinted regions, we found that parentally derived DNA methylation imprint was largely maintained in the iPS clones with Zfp57 but missing in those without maternal or zygotic Zfp57. Intriguingly, DNA methylation imprint was lost at the Peg1 and Peg3 but retained at the Snrpn and Dlk1-Dio3 imprinted regions in the iPS clones without zygotic Zfp57. This finding will be pursued in future studies.
Abstract licence: CC BY-NC
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