Nature:揭示抗体进入神经系统控制病毒感染机制

2016-05-21 佚名 生物谷 Bioon.com

在一项新的研究中,来自美国耶鲁大学医学院的研究人员解决了免疫系统的一个谜团---抗体如何进入神经系统控制病毒感染。他们的发现可能对预防和治疗一系列疾病---包括与寨卡病毒相关联的格林-巴利综合征(Guillain-Barre Syndrome)---产生影响。

在一项新的研究中,来自美国耶鲁大学医学院的研究人员解决了免疫系统的一个谜团---抗体如何进入神经系统控制病毒感染。他们的发现可能对预防和治疗一系列疾病---包括与寨卡病毒相关联的格林-巴利综合征(Guillain-Barre Syndrome)---产生影响。相关研究结果于2016年5月18日在线发表在Nature期刊上,论文标题为“Access of protective antiviral antibody to neuronal tissues requires CD4 T-cell help”。

西尼罗河病毒(WNV)、寨卡病毒(ZIKV)和单纯疱疹病毒(HSV)等多种病毒进入神经系统,而人们之前认为抗体无法到达那里。

在一项新的研究中,耶鲁大学医学院免疫学家Akiko Iwasaki博士和Norifumi Iijima博士利用模式小鼠研究抗体如何能够进入神经组织来控制感染。

在被HSV感染的小鼠体内,研究人员观察到CD4 T细胞的一种之前并未认识到的作用,其中CD4 T细胞是一种通过发送信号激活免疫反应来抵抗感染的白细胞。作为对HSV感染作出的反应,CD4 T细胞进入神经组织,分泌信号蛋白,并允许抗体进入感染部位。归纳在一起就是,CD4 T细胞和抗体限制病毒扩散。

Iwasaki说,“这是免疫系统的一个非常巧妙的设计,这一设计允许抗体进入感染部位。CD4 T细胞只进入存在病毒的部位。它是一种抗体靶向运送系统。”

这项发现的影响是多方面的。Iwasaki注意到,若没有CD4 T细胞,正在开发的治疗疱疹等疾病的基于抗体的疗法可能并不足以控制病毒感染。相反地,对格林-巴利综合征等抗体介导的自身免疫疾病而言,她说,“阻断CD4 T细胞进入神经组织可能是有益的。”

原始出处:

Norifumi Iijima & Akiko Iwasaki.Access of protective antiviral antibody to neuronal tissues requires CD4 T-cell.Nature (2016) doi:10.1038/nature17979

 

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    2017-01-27 1e1f9c58m10(暂无匿称)

    生殖器疱疹什么时候才能攻克?

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    2016-10-27 liye789132251
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