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Affymetrix SNP6.0 data for human induced pluripotent stem cells (hiPSCs), human Fibroblasts, and human embryonic stem cells (hESCs)

ABSTRACT: In this study, copy number variations of hiPSCs were compared to their parental fibroblast lines and hESCs to assess the level of DNA damage incurred due to the process of reprogramming of somatic cells. Higher levels of copy number changes were observed in hiPSCs (especially in early passage hiPSCs) compared to the other cell types.

ORGANISM(S): Homo sapiens

PROVIDER: GSE26173 | GEO | 2011/01/31

SECONDARY ACCESSION(S): PRJNA135255

REPOSITORIES: GEO

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Affymetrix SNP6.0 data for human induced pluripotent stem cells (hiPSCs), human Fibroblasts, and human embryonic stem cells (hESCs)

Project description:In this study, copy number variations of hiPSCs were compared to their parental fibroblast lines and hESCs to assess the level of DNA damage incurred due to the process of reprogramming of somatic cells. Higher levels of copy number changes were observed in hiPSCs (especially in early passage hiPSCs) compared to the other cell types. Affymetrix SNP arrays were performed according to the manufacturer's directions on DNA extracted from in vitro cultured cells. Copy number analysis of Affymetrix SNP 6.0 arrays was performed for 35 hiPSC samples, 2 hESC samples, and 5 fibroblast samples. Other hESC and the reference Hapmap sample CEL files were obtained from Narva et al. 2010, Nat. Biotech., GEO accession code GSE15097 (see readme file below for details).

2011-01-31 | E-GEOD-26173 | biostudies-arrayexpress

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Global expression profile difference of hiPSCs between hESCs and human Urine-Derived Cells

Project description:Compare difference Global expression profile of hiPSCs between hESCs and human Somatic cells, showing that hiPSCs and hESCs is consistent in lineages and indicated that the induce method is safe and reliable. There are three groups of samples, each group has two repeated samples, hiPSCs respectively compared with hESCs and human Urine-Derived Cells.

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2013-12-03 | E-GEOD-42446 | biostudies-arrayexpress

Comparison of gene expression profilings between hESCs and hiPSCs

Project description:It remains controversial whether human induced pluripotent stem cells (hiPSCs) are distinct from human embryonic stem cells (hESCs) in their molecular signatures and differentiation properties. We examined the gene expression and DNA methylation of 49 hiPSC and 10 hESC lines and identified no molecular signatures that distinguished hiPSCs from hESCs. Comparisons of the in vitro directed neural differentiation of 40 hiPSC and four hESC lines showed that most hiPSC clones were comparable to hESCs. However, in seven hiPSC clones, significant amount of undifferentiated cells persisted even after neural differentiation and resulted in teratoma formation when transplantated into mouse brains. These differentiation-defective hiPSC clones were marked by higher expression of several genes, including those expressed from long terminal repeats of human endogenous retroviruses. These data demonstrated that many hiPSC clones are indistinguishable from hESCs, while some defective hiPSC clones need to be eliminated prior to their application for regenerative medicine. We extracted total RNA from 10 hESCs, 49 hiPSCs, 2 hECCs, 6 somatic cells and 3 cancer cell lines and hybridized them to Agilent gene expression microarrays.

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