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 n
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.
Cell experiment: | Cervical lymph node cells obtained from immunized mice on day 18 (2×105 cells/well) arecultured in 0.2 mL RPMI 1640 containing 10 mM HEPES, 0.1 mM nonessential amino acid, 1 mM sodium pyruvate, 100 U/mL penicillin, 100 μg/mL streptomycin, 1×10-5?M 2-mercaptoethanol, 10% FCS, and 10 μg/mL IRBP1-20. For cytokine assay, supernatants are collected after 72 hours and analysed for IFN-γ, IL-4 and IL-17 by quantitative capture ELISA using quantikine ELISA kits and mouse IL-17 ELISA Ready-SET-Go kits. Cell proliferation is evaluated using a cell proliferation assay. |
Animal experiment: | In most experiments, 5 mg/kg or 20 mg/kg Apilimod or vehicle only (0.5% carboxyl methyl cellulose) is orally administered once a day for six days a week from day 0 to day 14 after immunization. In the effector phase experiments, 20 mg/kg Apilimod or vehicle is orally administered once a day, from day 9 to day 14 after immunization. |
参考文献: [1]. Wada Y, et al. Selective abrogation of Th1 response by STA-5326, a potent IL-12/IL-23 inhibitor. Blood. 2007 Feb 1;109(3):1156-64. | |
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