Apilimod (STA-5326) is a potent and orally-available inhibitor of the cytokines interleukin-12 (IL-12) and interleukin-23 (IL-23) with the potential to treat certain autoimmune and inflammatory diseases. Apilimod (STA-5326) inhibits IL-12 with IC50 of 1 nM, 1 nM and 2 nM, in IFN-γ/SAC-stimulated human PBMCs, human monocytes and mouse PBMCs, respectively. Apilimod (STA-5326) is also a cell permeable small molecule that specifically inhibits PIKfyve with IC50 of 14 nM.
Apilimod selectively inhibits TLR-induced cytokine expression. It selectively inhibits the production of IL12p40, whereas it has little effect on IL8 production in THP-1 cells[1]. Apilimod reduces not only PtdIns(3,5)P2 production but also that of PtdIns5P in intact cells[2].
[1] Cai X, et al. Chem Biol. 2013, 20(7):912-21. [2] Diego Sbrissa, et al. PLoS One. 2018, 13(9): e0204532. [3] Yumiko Wada, et al. Blood. 2007 Feb 1;109(3):1156-64.
















