Non integrative strategy decreases chromosome instability and improves endogenous pluripotency genes reactivation in porcine induced pluripotent-like stem cells.

TitleNon integrative strategy decreases chromosome instability and improves endogenous pluripotency genes reactivation in porcine induced pluripotent-like stem cells.
Publication TypeJournal Article
Year of Publication2016
AuthorsCongras, A, Barasc, H, Canale-Tabet, K, Plisson-Petit, F, Delcros, C, Feraud, O, Oudrhiri, N, Hadadi, E, Griscelli, F, Bennaceur-Griscelli, A, Turhan, A, Afanassieff, M, Ferchaud, S, Pinton, A, Yerle-Bouissou, M, Acloque, H
JournalSci Rep
Volume6
Pagination27059
Date Published2016
ISSN2045-2322
Abstract

The pig is an emerging animal model, complementary to rodents for basic research and for biomedical and agronomical purposes. However despite the progress made on mouse and rat models to produce genuine pluripotent cells, it remains impossible to produce porcine pluripotent cell lines with germline transmission. Reprogramming of pig somatic cells using conventional integrative strategies remains also unsatisfactory. In the present study, we compared the outcome of both integrative and non-integrative reprogramming strategies on pluripotency and chromosome stability during pig somatic cell reprogramming. The porcine cell lines produced with integrative strategies express several pluripotency genes but they do not silence the integrated exogenes and present a high genomic instability upon passaging. In contrast, pig induced pluripotent-like stem cells produced with non-integrative reprogramming system (NI-iPSLCs) exhibit a normal karyotype after more than 12 months in culture and reactivate endogenous pluripotency markers. Despite the persistent expression of exogenous OCT4 and MYC, these cells can differentiate into derivatives expressing markers of the three embryonic germ layers and we propose that these NI-iPSLCs can be used as a model to bring new insights into the molecular factors controlling and maintaining pluripotency in the pig and other non-rodent mammalians.

DOI10.1038/srep27059
Alternate JournalSci Rep
PubMed ID27245508
PubMed Central IDPMC4887982