Momelotinib (CYT387) 是 ATP 竞争性的 JAK1/JAK2 抑制剂，IC₅₀ 值分别为 11 nM/18 nM，是对 JAK3 选择性的 10 倍左右。

Momelotinib (CYT387) is an ATP-competitive inhibitor of JAK1/JAK2 with IC 50 a of 11 nM and 18 nM,respectively. CYT387 shows much less activity against JAK3.

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JAK1 11 nM (IC50) JAK2 18 nM (IC50

Momelotinib (CYT387) inhibits the proliferation of parental Ba/F3 cells (Ba/F3-wt) stimulated by IL-3 with IC50 of 1400 nM. Furthermore, Momelotinib (CYT387) also causes the inhibition of cell proliferation in cell lines constitutively activated by JAK2 or MPL signaling, including Ba/F3-MPLW515L cells, CHRF-288-11 cells and Ba/F3-TEL-JAK2 cells with IC50 of 200 nM, 1 nM and 700 nM, respectively. In addition, Momelotinib (CYT387) has been shown to inhibit erythroid colony growth in vitro from JAK2V617F-positive PV patients with similar potency with IC50 of 2 μM-4 μM. Momelotinib (CYT387) inhibits PI3K/AKT and Ras/MAPK signaling induced by IL-6 and IGF-1. Moreover, Momelotinib (CYT387) induces apoptosis as a single agent and synergizes with the conventional anti-MM therapies PS-341 and L-PAM in primary multiple myeloma (MM) cells.

In a murine MPN model, Momelotinib (CYT387) normalizes white cell counts, hematocrit, spleen size, and restores physiologic levels of inflammatory cytokines. has not independently confirmed the accuracy of these methods. They are for reference only.

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Powder -20°C 3 years；4°C 2 years

[1]. Pardanani A, et al. CYT387, a selective JAK1/JAK2 inhibitor: in vitro assessment of kinase selectivity and preclinical studies using cell lines and primary cells from polycythemia vera patients. Leukemia, 2009, 23(8), 1441-1445.
[2]. Monaghan KA, et al. The novel JAK inhibitor CYT387 suppresses multiple signalling pathways, prevents proliferation and induces apoptosis in phenotypically diverse myeloma cells. Leukemia, 2011, 25(12), 1891-1899.

In Vitro: DMSO : 20.83 mg/mL (50.26 mM; ultrasonic and warming and heat to 80°C)配制储备液