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J Cardiovasc Transl Res. 2011 Apr;4(2):131-7. doi: 10.1007/s12265-010-9250-2. Epub 2011 Jan 5.

Nuclear reprogramming strategy modulates differentiation potential of induced pluripotent stem cells.

Author information

  • 1Division of Cardiovascular Diseases, Department of Medicine, Marriott Heart Disease Research Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.

Abstract

Bioengineered by ectopic expression of stemness factors, induced pluripotent stem (iPS) cells demonstrate embryonic stem cell-like properties and offer a unique platform for derivation of autologous pluripotent cells from somatic tissue sources. In the process of nuclear reprogramming, somatic tissues are converted to a pluripotent ground state, thus unlocking an unlimited potential to expand progenitor pools. Molecular dissection of nuclear reprogramming suggests that a residual memory derived from the original parental source, along with the remnants of the reprogramming process itself, leads to a biased potential of the bioengineered progeny to differentiate into target tissues such as cardiac cytotypes. In this way, iPS cells that fulfill pluripotency criteria may display heterogeneous profiles for lineage specification. Small molecule-based strategies have been identified that modulate the epigenetic state of reprogrammed cells and are optimized to erase the residual memory and homogenize the differentiation potential of iPS cells derived from distinct backgrounds. Here, we describe the salient components of the reprogramming process and their effect on the downstream differentiation capacity of the iPS populations in the context of cardiovascular regenerative applications.

PMID:
21207217
[PubMed - indexed for MEDLINE]
PMCID:
PMC3047690
Free PMC Article

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