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Tofacitinib Prodrug-1
MCE 国际站:Tofacitinib Prodrug-1
产品活性:Tofacitinib Prodrug-1 是减轻托法替尼 (Tofacitinib) 全身性不良反应的口服有效前药。Tofacitinib Prodrug-1 能在小鼠模型有效减轻恶唑酮诱导的结肠炎,具有低毒性,是研究溃疡性结肠炎的潜在候选活性分子。
研究领域:Epigenetics | Protein Tyrosine Kinase/RTK | JAK/STAT Signaling | Stem Cell/Wnt | Apoptosis
In Vitro: Tofacitinib Prodrug-1 (compound 20g) (1 mM; 12 hours at 37 °C) is not obviously degraded from 0 to 12 hours in simulated gastric and intestinal fluid.
In Vivo: Tofacitinib Prodrug-1 (22.5 mg/kg; p.o.) can decrease the systemic exposure of tofacitinib by releasing the parent drug Tofacitinib into the circulation slowly.
Tofacitinib Prodrug-1 (22.5 mg/kg; p.o.) can increase intestinal exposure to improve the therapeutic effect of Tofacitinib.
Tofacitinib Prodrug-1 (1.5 mg/kg; p.o.; twice daily, for 4 days) can effectively attenuate the oxazolone-induced colitis in mice.
Tofacitinib Prodrug-1 (1.5 mg/kg; i.g.; twice daily, for 4 days) has no apparent influence on systemic immunosuppression in normal mice, which could decrease the risk of infection associated with Tofacitinib.
Tofacitinib Prodrug-1 (2000 mg/kg; i.g.; single) has low toxicity and was tolerated at an oral dose of 2000 mg/kg, and no significant change was observed in biochemical parameters and organ indexes.
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文献和实验JCI Insight:中山大学苏文如教授团队在眼免疫性疾病的炎症控制和临床靶向防治领域取得新进展
gained from single-cell analysis of immune cells in tofacitinib treatment of Vogt-Koyanagi-Harada disease 的论文 [10]。 该研究收集 VKH 患者接受 JAKs 抑制剂,托法替尼(Tofacitinib, TOFA)治疗前后以及年龄匹配的健康人群外周血的单个核细胞进行单细胞转录组测序(scRNA-seq)和流式质谱(CyTOF)验证,此外,研究者对 VKH 疾病易感基因和遗传风险位点的潜在功能
为mRNA,因而不能翻译成相应的蛋白质,以达治疗某一疾病的目的、用反义DNA已对某些癌症进行临床试验。这类反义技术只能认为是一种从基因水平进行治疗的技术,它们以不同方式,在DNA复制、转录和翻译水平发挥作用。由于它们的分子量低,故而有潜力进入靶细胞,但其临床稳定性、毒性、细胞通透性等各方面都需要进一步研究。 5.药物靶向治疗(drugs targeting)此法机理可概括为病毒导向酶的药物前体治疗(virus directed enzyeme prodrug therapy
enzyme prodrug therapy,ADEPT)即前体药物的专一性活化酶与单抗交联,导向输入到靶细胞部位,继而注入前体药物,相应的酶在靶部位把前体药物转化为活化型药物。药物在输送过程中为非活化型,在靶部位转化为活化型,从而可以降低药物毒性并提高肿瘤疗效。鉴于前体药物多为小分子物质,可自由通过各种组织屏障及肿瘤微血管,在肿瘤组织有较高的浓度,加之酶的专一性和扩大效应,使杀伤力明显增强。目前用作前体药物的抗癌药有氮芥、鬼臼乙叉甙、阿霉素、丝裂霉素、氨甲喋呤等。作为活化前药的导向酶有β 葡萄
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