eLife:靶向治疗精液中HIV病毒 绝杀AIDS

2015-08-24 佚名 生物谷

                         近日,来自美国宾夕法尼亚大学医学院的研究人员在国际学术期刊eLife发表了一项最新研究进展,他们发现在

                        


近日,来自美国宾夕法尼亚大学医学院的研究人员在国际学术期刊eLife发表了一项最新研究进展,他们发现在HIV感染的初始阶段利用一种小分子物质攻击精液中的淀粉样纤维能够抗癌艾滋病的发展。通过精液进行传播是HIV传播的一种常见方式,因此阻断这一途径对于抗击艾滋病具有重要意义。

研究人员指出,男性精液中包含淀粉样纤维,这种蛋白沉淀物质能够帮助HIV病毒吸附在人类细胞上,从而增加HIV的传播效率。
 
在本月发表在国际学术期刊Chemistry & biology上的另一篇文章中,科学家发现热激蛋白104(HSP104)能够能够与另外一种酶发生相互作用不可逆地降解精液中的纤维。这种方法能够消除淀粉样纤维促进HIV感染的能力,因此可以作为一种潜在治疗方法进行进一步开发。
 
因此在这项最新研究中,研究人员发现另一种叫做CLR01的小分子物质也能够干扰精液中淀粉样纤维促进HIV感染的功能,除此之外,这种小分子物质还可以攻击病毒本身。
 
研究人员介绍道:CLR01既可以干扰纤维形成又能够促进已经形成的纤维发生解聚。它还能够通过破坏HIV病毒颗粒外面包绕的膜结构,防止HIV病毒颗粒与纤维发生相互作用,而已经结合到纤维上的病毒颗粒则会被CLR01置换位置,防止与纤维的结合。在有CLR01存在的情况下,暴露在包含HIV病毒的精液中的人类细胞感染HIV的几率至少可以下调100倍。
 
除了能够抗击HIV,CLR01还可以直接干扰其他一些有包膜病毒的传播过程,并且对于一些神经退行性疾病的治疗也有作用。
 
总的来说,这项研究发现CLR01能够通过影响精液中的淀粉样纤维形成以及直接作用于HIV病毒本身,发挥抗击艾滋病的作用,这种机制对于降低HIV病毒传播以及治疗其他通过性途径进行传播的病毒性疾病具有重要意义。

原文出处:
 
Edina Lump, Laura M Castellano, et al.A molecular tweezer antagonizes seminal amyloids and HIV infection.eLife.2015

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    2015-09-01 clmlylxy
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    2015-10-15 一叶知秋
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    2016-08-02 膀胱癌
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    2015-08-26 hb2008ye
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    2015-08-26 cooco
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