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鲁索利替尼;卢索替尼;芦可替尼 Ruxolitinib

2019/7/7 5:14:56发布61次查看
交易须知
ruxolitinib产品活性:ruxolitinib 是有效,选择性的 jak1/2 抑制剂, ic50 值分别为 3.3 nm和2.8 nm,选择性是 jak3 的 130 多倍。
研究领域:epigenetics  |  stem cell/wnt  |  jak/stat signaling  |  autophagy
作用靶点:jak  |  autophagy  |  mitophagy
in vitro: ruxolitinib potently and selectively inhibits jak2v617f-mediated signaling and proliferation, markedly increases apoptosis in a dose dependent manner, and at 64 nm results in a doubling of cells with depolarized mitochondria in ba/f3 cells. ruxolitinib demonstrates remarkable potency against erythroid colony formation with ic50 of 67 nm, and inhibits proliferating of erythroid progenitors from normal donors and polycythemia vera patients with ic50 values of 407 nm and 223 nm, respectively.
in vivo: ruxolitinib (180 mg/kg, orally, twice a day) results in survive rate of greater than 90% by day 22 and markedly reduces splenomegaly and circulating levels of inflammatory cytokines, and preferentially eliminated neoplastic cells, resulting in significantly prolonged survival without myelosuppressive or immunosuppressive effects in a jak2v617f-driven mouse model. in the ruxolitinib group, the primary end point is reached in 41.9% of patients, as compared with 0.7% in the placebo group in the double-blind trial of myelofibrosis. ruxolitinib results in maintaining of reduction in spleen volume and improvement of 50% or more in the total symptom score. ruxolitinib (15 mg twice daily) treatment leads a total of 28% of the patients to have at least a 35% reduction in spleen volume at week 48 in patients with myelofibrosis, as compared with 0% in the group receiving the best available therapy. the mean palpable spleen length has decreased by 56% with ruxolitinib but has increased by 4% with the best available therapy at week 48. patients in the ruxolitinib group has an improvement in overall quality-of-life measures and a reduction in symptoms associated with myelofibrosis.
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