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. 2023 Apr 11;6:393. doi: 10.1038/s42003-023-04737-x

Fig. 1. OCT4 alone was insufficient to direct reprogramming of human PBMCs into iMSCs.

Fig. 1

a Schematic diagram of the episomal vector plasmids. SFFV is the spleen focus-forming virus U3 promoter; WPRE, posttranscriptional regulatory element; SV40PolyA, polyadenylation signal from SV40 virus; OriP, EBV (Epstein–Barr virus) origin of replication; EBNA1, Epstein–Barr nuclear antigen 1. b Colony formation at day 14 after nucleofection with 2 × 106 PBMCs and maintenance in MSC culture conditions. c Reprogramming efficiency with different combinations of reprogramming factors. Error bars indicate standard deviation. n = 3 biologically independent samples for each group. d Fluorescence-activated cell sorting (FACS) analysis of iMSCs 8 days after reprogramming with different factor combinations. SOX2 induced iPSCs generation (TRA-1-60+ cells). However, SOX9 did not induce detectable TRA-1-60+ cells. e Colony formation at day 14 after nucleofection with 1 × 106 PBMCs (control) or CD34+-depleted PBMCs followed by maintenance in MSC culture conditions.