Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Gene expression data from teratomas formed by C57BL/6 (B6) ES and EiPS cells in B6 mice

ABSTRACT: Embryonic fibroblast from C57BL/6 (B6) mice were reprogrammed to EiPS without exogenous DNA integration using an single episomal vector. The EiPS cells and B6 ES cells were then transplanted into B6 mice to form teratomas. We used microarrays to profile the gene expression differences between the teratomas formed by B6 ES cells and EiPS cells. Pooled RNA from two teratomas formed by B6 ES or two regression teratomas formed by EiPS were selected for hybridization on Affymetrix microarrays.

ORGANISM(S): Mus musculus

SUBMITTER: Tongbiao Zhao

PROVIDER: E-GEOD-28573 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Immunogenicity of induced pluripotent stem cells.

Zhao Tongbiao T Zhang Zhen-Ning ZN Rong Zhili Z Xu Yang Y

Nature 20110513 7350

Induced pluripotent stem cells (iPSCs), reprogrammed from somatic cells with defined factors, hold great promise for regenerative medicine as the renewable source of autologous cells. Whereas it has been generally assumed that these autologous cells should be immune-tolerated by the recipient from whom the iPSCs are derived, their immunogenicity has not been vigorously examined. We show here that, whereas embryonic stem cells (ESCs) derived from inbred C57BL/6 (B6) mice can efficiently form tera ...[more]

PMID: 21572395

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Project description:Human pluripotent stem cells (hPSCs) tend to acquire genomic aberrations in culture, the most common of which is the trisomy of chromosome 12. Interestingly, trisomy 12 is also prevalent in germ cell tumors (GCTs). Here, we aimed to dissect the cellular and molecular implications of trisomy 12 in hPSCs. A genome-wide gene expression analysis revealed that trisomy 12 profoundly affects the global gene expression profile of hPSCs, inducing a transcriptional program very similar to that of CGTs. Direct comparison of the proliferation, replication, differentiation and apoptosis between diploid and aneuploid hPSCs revealed that trisomy 12 significantly increases the proliferation rate of hPSCs. Increased replication largely accounts for the increased proliferation observed, and may explain the selection advantage that trisomy 12 confers to hPSCs. A comparison of the tumors induced by diploid and aneuploid hPSCs further demonstrated that trisomy 12 increases the tumorigenicity of hPSCs, inducing transcriptionally-distinct teratomas, from which pluripotent cells can be recovered. Lastly, a chemical screen of 89 anticancer drugs against diploid and aneuploid hPSCs discovered that trisomy 12 raises the sensitivity of hPSCs to several replication inhibitors, suggesting that the increased proliferation and tumorigenicity of these aberrant cells also makes them more vulnerable, and might potentially be used for their selective elimination from culture. Together, our findings demonstrate the extensive effect of trisomy 12 on the gene expression signature and on the cellular behavior of hPSCs, and highlight the danger posed by this trisomy for the successful use of hPSCs in basic research and in regenerative medicine. Expression data from diploid and aneuoploid human pluripotent stem cells, teratomas derived from them, and pluripotent-like cells recovered from these teratomas total RNA was isolated from undifferentiated human pluripotent stem cells grown under standard human ES conditions, or from teratomas derived from them, or from ES-like cells recovered from these teratomas.

Dataset Information

Gene expression data from teratomas formed by C57BL/6 (B6) ES and EiPS cells in B6 mice

Publications

Immunogenicity of induced pluripotent stem cells.

Similar Datasets

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