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© Research
Publication : Oncogene

Reprogramming activity of NANOGP8, a NANOG family member widely expressed in cancer

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Oncogene - 10 Jun 2013

Palla AR, Piazzolla D, Abad M, Li H, Dominguez O, Schonthaler HB, Wagner EF, Serrano M

Link to Pubmed [PMID] – 23752184

Oncogene 2014 May;33(19):2513-9

NANOG is a key transcription factor for pluripotency in embryonic stem cells. The analysis of NANOG in human cells is confounded by the presence of multiple and highly similar paralogs. In particular, there are three paralogs encoding full-length proteins, namely, NANOG1, NANOG2 and NANOGP8, and at least eight additional paralogs that do not encode full-length NANOG proteins. Here, we have examined NANOG family expression in human embryonic stem cells (hESCs) and in human cancer cell lines using a multi-NANOG PCR that amplifies the three functional paralogs and most of the non-functional ones. As anticipated, we found that hESCs express large amounts of NANOG1 and, interestingly, they also express NANOG2. In contrast, most human cancer cells tested express NANOGP8 and the non-coding paralogs NANOGP4 and NANOGP5. Notably, in some cancer cell lines, the NANOG protein levels produced by NANOGP8 are comparable to those produced by NANOG1 in pluripotent cells. Finally, we show that NANOGP8 is as active as NANOG1 in the reprogramming of human and murine fibroblasts into induced pluripotent stem cells. These results show that cancer-associated NANOGP8 can contribute to promote de-differentiation and/or cellular plasticity.

http://www.ncbi.nlm.nih.gov/pubmed/23752184