OPEN IN READ APP
JOURNAL ARTICLE

ONSL and OSKM cocktails act synergistically in reprogramming human somatic cells into induced pluripotent stem cells

Laura Jung, Philippe Tropel, Yohann Moal, Marius Teletin, Eric Jeandidier, Régis Gayon, Christian Himmelspach, Fiona Bello, Cécile André, Adeline Tosch, Ahmed Mansouri, Catherine Bruant-Rodier, Pascale Bouillé, Stéphane Viville
Molecular Human Reproduction 2014, 20 (6): 538-49
24501429
The advent of human induced pluripotent stem cells (hiPSC) is revolutionizing many research fields including cell-replacement therapy, drug screening, physiopathology of specific diseases and more basic research such as embryonic development or diseases modeling. Despite the large number of reports on reprogramming methods, techniques in use remain globally inefficient. We present here a new optimized approach to improve this efficiency. After having tested different monocistronic vectors with poor results, we adopted a polycistronic cassette encoding Thomson's cocktail OCT4, NANOG, SOX2 and LIN28 (ONSL) separated by 2A peptides. This cassette was tested in various vector backbones, based on lentivirus or retrovirus under a LTR or EF1 alpha promoter. This allowed us to show that ONSL-carrier retrovectors reprogrammed adult fibroblast cells with a much higher efficiency (up to 0.6%) than any other tested. We then compared the reprogramming efficiencies of two different polycistronic genes, ONSL and OCT4, SOX2, KLF4 and cMYC (OSKM) placed in the same retrovector backbone. Interestingly, in this context ONSL gene reprograms more efficiently than OSKM but OSKM reprograms faster suggesting that the two cocktails may reprogram through distinct pathways. By equally mixing RV-LTR-ONSL and RV-LTR-OSKM, we indeed observed a remarkable synergy, yielding a reprogramming efficiency of >2%. We present here a drastic improvement of the reprogramming efficiency, which opens doors to the development of automated and high throughput strategies of hiPSC production. Furthermore, non-integrative reprogramming protocols (i.e. mRNA) may take advantage of this synergy to boost their efficiency.

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Available on the App Store

Available on the Play Store
Remove bar
Read by QxMD icon Read
24501429
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"