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Accession IconGSE65468

Analysis of Klf4 factor stoichiometry effects during iPS cell derivation from mouse embryonic fibroblasts

Organism Icon Mus musculus
Sample Icon 10 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Gene 1.0 ST Array (mogene10st)

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Description
Oct3/4, Sox2, Klf4, and c-Myc re-wire somatic cells to achieve induced pluripotency (iPS cells). However, subtle differences in reprogramming methodology may confound comparative studies of reprogramming-induced gene expression changes. We specifically focused on the design of polycistronic reprogramming constructs, which encode all four factors linked with 2A peptides. Notably, publically available cassettes were found to employ one of two Klf4 variants (Klf4S and Klf4L; GenBank Accession Nos: AAC52939.1 and AAC04892.1), differing only by nine N-terminal amino acids. In a polycistronic context, these two variants generated dissimilar protein stoichiometry, where Klf4L vectors produced more Klf4 protein than those encoding Klf4S.
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