Numidargistat (CB-1158) 是一种有效的，具有口服活性的精氨酸酶 (arginase) 抑制剂，对重组人 arginase 1 和 arginase 2 的 IC₅₀ 值分别为 86 nM 和 296 nM。免疫肿瘤剂。

Numidargistat (CB-1158) is a potent and orally active inhibitor of arginase, with IC 50 s of 86 nM and 296 nM for recombinant human arginase 1 and recombinant human arginase 2, respectively. Immuno-oncology agent.

Solid

IC50: 86 nM (Arginase 1), 296 nM (Arginase 2)

Numidargistat is a potent and orally-bioavailable inhibitor of arginase, with IC50s of 86 and 296 nM for recombinant human arginase 1 and 2, respectively. Numidargistat inhibits native rginase 1 (Arg1) in human granulocyte, erythrocyte, and hepatocyte lysate with IC50s of 178 nM, 116 nM and 158 nM, respectively, and blocks Arg1 in cancer patient plasma (IC50, 122 nM). Numidargistat also exhibits potent inhibitory activity against arginase in human HepG2, K562 cell lines and primary human hepatocytes with IC50s of 32, 139, 210 μM, respectively. Numidargistat show no effect on NOS. In addition, Numidargistat is not directly cytotoxic to murine cancer cell lines. has not independently confirmed the accuracy of these methods. They are for reference only.

Numidargistat (100 mg/kg, p.o., twice per day) increases the number of tumor-infiltrating cytotoxic cells and decreases myeloid cells in mice. Numidargistat in combination with PD-L1 blockade or gemcitabine inhibits tumor growth in mice bearing CT26 cancer cells. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Steggerda SM, et al. Inhibition of arginase by CB-1158 blocks myeloid cell-mediated immune suppression in the tumor microenvironment. J Immunother Cancer. 2017 Dec 19;5(1):101.