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Accession IconGSE27186

Expression data of human somatic cell types and induced pluripotent stem cells

Organism Icon Homo sapiens
Sample Icon 8 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)

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Transcription factor-mediated reprogramming yields induced pluripotent stem cells (iPSC) by erasing tissue specific methylation and re-setting DNA methylation status to an embryonic stage. We compared bona fide human iPSC derived from umbilical cord blood (CB) and neonatal keratinocytes (K). Through both incomplete erasure of tissue specific methylation and de novo tissue specific methylation, CB-iPSC and K-iPSC are distinct in genome-wide DNA methylation profiles. Functionally, CB-iPSC displayed better blood formation in vitro, whereas K-iPSC differentiated better to a keratinocyte fate, implying that the tissue of origin needs to be considered in future therapeutic applications of human iPSCs.
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