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抑制剂描述： 产品名称：Leflunomide 产品别名：见爱必信官网 英文别名：Leflunomide 靶点：Dehydrogenase CAS：75706-12-6 纯度：>98% 外观：见爱必信官网 保存方法：store at -20℃ for one year（Powder）； in DMSO or others solvent store at 2-4℃ for two weeks, at -20℃ for six months. 描述： Leflunomide (HWA486)是一种免疫抑制剂，其活性代谢产物为Teriflunomide。 溶解性：Ethanol ：27 mg/mL (100 mM) 体外研究： Leflunomide is actually a prodrug that is processed in vivo to the active metabolite A771726，which has been shown to inhibit proliferation of mononuclear and T-cells. Leflunomide is an inhibitor of several protein tyrosine kinases, with IC50 values between 30 mM and 100 mM in vitro cellular and enzymatic assays. Leflunomide is capable of inhibiting anti-CD3- and interleukin-2 (IL-2)-stimulated T cell proliferation. Leflunomide is able to inhibit p59fyn and p56lck activity in in vitro tyrosine kinase assays. Leflunomide also inhibits Ca2+ mobilization in Jurkat cells stimulated by anti-CD3 antibody but not in those stimulated by ionomycin. Leflunomide also inhibits distal events of anti-CD3 monoclonal antibody stimulation, namely, IL-2 production and IL-2 receptor expression on human T lymphocytes. Leflunomide also inhibits tyrosine phosphorylation in CTLL-4 cells stimulated by IL-2. Leflunomide is an immunomodulatory drug that may exert its effects by inhibiting the mitochondrial enzyme dihydroorotate dehydrogenase (DHODH), which plays a key role in the de novo synthesis of the pyrimidine ribonucleotide uridine monophosphate (rUMP). Leflunomide prevents the expansion of activated and autoimmune lymphocytes by interfering with the cell cycle progression due to inadequate production of rUMP and utilizing mechanisms involving p53. 体内研究：Leflunomide is able to prevent and reverse allograft and xenograft rejection in rodents, dogs, and monkeys.
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