A83-01 (909910-43-6) is a potent and selective ALK4, 5 and 7 inhibitor.1,2 IC50 = 45, 12 and 7.5 nM respectively. Prevents phosphorylation of Smad2/3 and growth inhibition induced by TGFβ.2 Inhibits differentiation of rat induced pluripotent stem cells and increases clonal expansion efficiency.3 Together with AMI-5, A83-01 enabled Oct4-induced reprogramming of mouse embryonic fibroblasts.4 Cell permeable. Active in vivo.
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3) Li et al. (2009), Generation of rat and human induced pluripotent stem cells by combining genetic reprogramming and chemical inhibitors; Cell Stem Cell, 4 16
4) Yuan et al. (2011), Brief report: combined chemical treatment enables Oct4-induced reprogramming from mouse embryonic fibroblasts; Stem Cells, 29 549