OD36 is a RIPK2 inhibitor with an IC50 of 5.3 nM. OD36 is a macrocyclic inhibitor with potent binding to the ALK2 kinase ATP pocket. OD36 shows ALK2-directed activity with KDs of 37 nM[2].In Vitro: OD36 also inhibits ALK2 and ALK2 R206H with IC50s of 47 and 22 nM, respevtively.
OD36 shows activity against ALK1 with a KD of 90 nM[2].
OD36 potently antagonize mutant ALK2 signaling and osteogenic differentiation[2].
OD36 (0.1-1 μM; 24 h) efficiently inhibits BMP-6 (50 ng/mL)-induced p-Smad1/5 in KS483 cells[2].
Preincubation of fibrodysplasia ossificans progressiva (FOP) endothelial colony-forming cells (ECFCs) with OD36 (0.5 μM) completely prevents the activation of Smad1/5 and gene targets ID-1 and ID-3 in response to activin A[2].In Vivo: OD36 (6.25 mg/kg; i.p.; once) alleviates inflammation in an acute peritonitis mice model.