StemRegenin 1 Hydrochloride is an aryl hydrocarbon receptor (AhR) antagonist (IC₅₀ = 127 nM) that inhibits RANKL-induced osteoclast generation and differentiation while promoting the expansion of multipotent haematopoietic progenitor cells derived from human embryonic stem cells (hESCs).
MEISi-1 is a novel MEIS inhibitor (MEISi), significantly inhibiting MEIS-luciferase reporters in vitro and inducing murine (LSKCD34low cells) and human (CD34+, CD133+, and ALDHhi cells) HSC self-renewal ex vivo.
PHA-680626 is a potent and selective PLK inhibitor. PHA-680626 exhibits anti-proliferative and pro-apoptotic activity on Imatinib-resistant chronic myeloid leukemia cell lines and primary CD34+ cells by inhibition of both Bcr-Abl tyrosine kinase and Aurora kinases. PHA-680626 inhibits Plk1 (IC50 = 0.53 μM), Plk2 (IC50 = 0.07 μM) and Plk3 (IC50 = 1.61 μM).