Prophylactic treatment with BX795 blocks activation of AKT and its downstream targets to protect vaginal keratinocytes and vaginal epithelium from HSV-2 infection.

Prophylactic treatment with BX795 blocks activation of AKT and its downstream targets to protect vaginal keratinocytes and vaginal epithelium from HSV-2 infection.
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BX795 的预防性治疗可阻断 AKT 及其下游靶点的激活,以保护阴道角质形成细胞和阴道上皮免受 HSV-2 感染。

DOI:
10.1016/j.antiviral.2021.105145
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发表时间:
2021-10
期刊:
影响因子:
7.6
通讯作者:
Shukla D
Shukla D
中科院分区:
医学2区
文献类型:
--
作者:
Madavaraju K;Yadavalli T;Singh SK;Qatanani F;Shukla D

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人类生殖器疱疹感染通常由单纯疱疹病毒2型(HSV-2)引起,其导致肛门生殖器区域的复发性病变。过去的研究表明,病毒蛋白翻译抑制剂BX 795在治疗剂量下能够在体外和体内减轻HSV-2感染。然而,这种化合物对HSV-2感染的任何预防益处仍然知之甚少。在这项研究中,我们表明,当将BX 795加入人阴道角质形成细胞中时,对未来的HSV-2感染产生强烈的预防作用。作为这种作用的一种可能机制,我们发现BX 795有效地降低了AKT及其下游靶点p70 S6 K和4 EBP 1的磷酸化。我们的计算机蛋白质对接研究支持我们的免疫印迹结果,并提供进一步的可信度提出的机制。使用阴道感染的小鼠模型,我们表明先前用BX 795治疗也具有体内保护作用,并导致阴道组织中病毒复制降低。
Genital herpes infections in humans are usually caused by herpes simplex virus type-2 (HSV-2), which result in recurrent lesions in the anogenital region. Past studies have shown that a viral protein translation inhibitor, BX795 is capable of mitigating HSV-2 infection both in vitro and in vivo when dosed therapeutically. However, any preventative benefits of this compound against HSV-2 infection remain poorly understood. In this study, we show that BX795 when added prophylactically to human vaginal keratinocytes generates strong preventative effects against a future HSV-2 infection. As a possible mechanism for this action, we found that BX795 efficiently reduces phosphorylation of AKT and its downstream targets p70S6K and 4EBP1. Our in-silico protein docking studies support our immunoblotting results and provide further credence to the proposed mechanism. Using a murine model of vaginal infection, we show that prior treatment with BX795 is also protective in vivo and leads to lower viral replication in the vaginal tissue.
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