BAY-155 is a powerful and selective menin-MLL inhibitor, exhibiting an IC 50 of 8 nM. It significantly down-regulates MEIS1 gene expression while up-regulating CD11b and MNDA genes. BAY-155 also demonstrates anti-proliferative effects in AML ALL (acute myeloid lymphoblastic leukemia) models [1].
C24 dihydro Ceramide is a sphingolipid that has been found in the stratum corneum of human skin.[1] It is found in higher concentrations in female sebum compared to male sebum.[2] C24 dihydro Ceramide levels positively correlate with cytotoxicity in CCRF-CEM, MOLT-4, COG-LL-317h, and COG-LL-332h T cell acute lymphoblastic leukemia (ALL) cell lines.[4] Levels of C24 dihydro ceramide are increased by 149.49-fold in dihydroceramide desaturase 1 (DEGS1) knockdown UM-SCC-22A human head and neck squamous carcinoma cells in vitro.[4] C24 dihydro Ceramide levels are also increased in INS-1 β-cells incubated with glucose and palmitate.[5]
HDAC3 inhibitor is an allosteric inhibitor of histone deacetylase 3 (HDAC3; Ki = 0.16 nM). It is selective for HDAC3 over HDAC1 and HDAC2 (IC50s = 0.95, 11.81, and 95.45 nM, respectively, using recombinant HDACs). In addition, it is selective for acute myeloid, monocytic, and lymphoblastic leukemia cell lines (EC50s = 36.37, 76.64, and 151.7 nM, respectively) over chronic myeloid, acute promyelocytic, and acute lymphoblastic cells (EC50s = 2,160, >10,000, and >10,000 nM, respectively).
Isomitraphylline and pteropodine are the most suitable for standardization of medical cat's claw preparations. Isomitraphylline can inhibit proliferation of acute lymphoblastic leukaemia cells.