LDN-193189 HCl (1435934-00-1) is a potent and selective inhibitor of ALK2 (IC50 = 5 nM) and ALK3 (IC50 = 30 nM), thereby inhibiting SMAD1/5/8 phosphorylation.1 Only weak inhibition of ALK4, ALK5, and ALK7 is observed. Promotes neuronal differentiation of human pluripotent stem cells.2-3 LDN-193189 HCl has also been used to examine the role of osteogenesis in prostate tumor metastases in bone.4
References/Citations:
1) Yu et al. (2008), BMP type 1 receptor inhibition reduces heterotropic ossification; Nature Med.,14 1363
2) Chambers et al. (2012), Combined small-molecule inhibition accelerates developmental timing and converts human pluripotent stem cells into nociceptors; Nature Biotechnol. 30 715
3) Kreitzer et al. (2013) A robust method to derive functional neural crest cells from human pluripotent stem cells; Am. J. Stem Cells, 2 119
4) Lee et al. (2011) BMP4 promotes prostate tumor growth in bone through osteogenesis; Cancer Res. 71 5194