Stemcell, 74162, LY2228820

LY2228820 is a trisubstituted imidazole derivative and a potent inhibitor of the α- and β-isoforms of p38 MAP kinase (MAPK) in vitro (IC₅₀ = 5.3 and 3.2 nM, respectively) with anti-inflammatory and anti-neoplastic activities (Campbell et al.). This product is supplied as the dimesylate salt of the molecule.

MAINTENANCE AND SELF-RENEWAL

· Combined with other small molecule inhibitors such as Rapamycin (Catalog #73362) and SR1 (Catalog #72342; Li et al.) or SB203580 (Catalog #72222), Vx702, and BIRB-796 (Catalog #72682), enhances the self-renewal of cord blood-derived hematopoietic stem cells (Baudet et al.).

CANCER RESEARCH

· By inhibiting p38 MAPK, which is highly expressed in human cancers, LY2228820 is potent and selective at inhibiting tumor growth in animal models of a variety of human cancers (Campbell et al.).