LDN-212854 is a selective inhibitor of bone morphogenetic protein (BMP) signaling with IC50 value of 1.2nM [1].
In the kinase assay, LDN-212854 shows inhibitory activities against caALK2 and caALK5 with IC50 values of 16nM and 2μM, respectively. It demonstrates that LDN-212854 is selective against BMP over TGF-β signaling. Besides that, the inhibition of caALK2 caused by LDN-212854 is 6- and 10-fold more potent than that of caALK1 and caALK3, respectively. In C2C12 cells transfected with BMP receptors, LDN-212854 also exerts preferential inhibition against caALK2. Furthermore, in a transgenic ALK2Q207D model of heterotopic ossification, treatment of LDN-212854 prevents the formation of heterotopic bone and preserves limb range of motion [1].
References:
[1] Mohedas A H, Xing X, Armstrong K A, et al. Development of an ALK2-biased BMP type I receptor kinase inhibitor. ACS chemical biology, 2013, 8(6): 1291-1302.