PLoS Comput Biol:全新发现:影响炎症治疗的两个关键分子

2017-04-21 sunshine2015 来宝网

【科学家鉴定出两种抑制炎症反应的分子】科学家已经确定了可以作为慢性炎性疾病的潜在治疗方法的两种小分子靶点。根据PLOS计算生物学杂志发表的论文,研究人员使用他们开发的新的药物筛选方法分析了这两个分子。称为T23和T8的两种分子抑制被叫作肿瘤坏死因子(TNF)的蛋白质的功能,其参与诸如类风湿性关节炎,克罗恩病,牛皮癣,多发性硬化等疾病的炎症过程。抑制TNF功能的药物被认为是最有效的对抗这些疾病的方法


科学家已经确定了可以作为慢性炎性疾病的潜在治疗方法的两种小分子靶点。根据PLOS计算生物学杂志发表的论文,研究人员使用他们开发的新的药物筛选方法分析了这两个分子。

称为T23和T8的两种分子抑制被叫作肿瘤坏死因子(TNF)的蛋白质的功能,其参与诸如类风湿性关节炎,克罗恩病,牛皮癣,多发性硬化等疾病的炎症过程。抑制TNF功能的药物被认为是最有效的对抗这些疾病的方法。然而,并不是所有的患者都对这些药物做出了反应,并且随着时间的推移,它们的功效可能会消失。

为了帮助发现更好的TNF抑制药物,Georgia Melagraki和来自希腊和塞浦路斯的同事开发了一种新的基于计算机的药物筛选平台。该平台包含TNF和另一种称为RANKL的蛋白质之间共同的专有分子性质,RANKL也参与慢性炎性疾病。

研究人员开发了基于先进计算工具的平台。然后使用该平台来实际筛选近15,000个具有未知活性的小分子,并预测它们与TNF和RANKL蛋白的相互作用; 具体来说,就是小分子可能如何破坏导致这些关键蛋白质的三聚和活化的蛋白质相互作用(PPI)。 “这个虚拟实验从成千上万的候选者中发现了九种有希望的分子,”研究共同作者NovaMechanics有限公司的Antreas Afantitis说道。

为了进一步评估其潜力,科学家们研究了9个小分子与实际实验中的TNF和RANKL的相互作用。在9个分子中,T23和T8表现为特别强的TNF抑制作用。两个分子都与TNF和RANKL结合,阻止它们与其他蛋白质正确发生相互作用。两者在人体中也可能引起毒副作用。

亚历山大·弗莱明(Alexander Fleming)生物医学科学研究中心的研究人员,即研究共同作者George Kollias说:“T23和T8可以进一步优化,以开发一系列炎症,自身免疫和骨丢失疾病的治疗方法”。同时,新的虚拟药物筛选方法可以发现其他有希望的TNF抑制剂,并且可以进行修改以寻找治疗其他疾病的潜在方法。

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    2017-07-13 sunylz
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    2017-04-22 大爰

    希望将来能应用于患者!

    0

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    2017-04-21 Chongyang Zhang

    签到学习了很多

    0

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