Reactivation of HIV-1 from Latency by an Ingenol Derivative from Euphorbia Kansui.

Reactivation of HIV-1 from Latency by an Ingenol Derivative from Euphorbia Kansui.
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来自Kansui的Ingenol衍生物从潜伏期中重新激活HIV-1。

DOI:
10.1038/s41598-017-07157-0
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发表时间:
2017-08-25
期刊:
影响因子:
4.6
通讯作者:
Zhu H
Zhu H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang P;Lu P;Qu X;Shen Y;Zeng H;Zhu X;Zhu Y;Li X;Wu H;Xu J;Lu H;Ma Z;Zhu H

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携带潜伏HIV-1的细胞是根除该病毒的主要障碍。已经广泛探索了“休克和杀灭”策略来清除潜伏的病毒库;然而,目前没有一种潜伏逆转剂(LRA)可以安全有效地激活患者体内的潜伏病毒。在这项研究中,我们报告了一个巨大戟醇衍生物称为EK-16 A,分离自传统的中药甘遂,它显示出很大的潜力,在重新激活潜伏的HIV-1。用于测量效力的剂量的比较表明,EK-16 A在从潜伏感染的细胞系中重新激活HIV-1方面的效力比prostratin强200倍。EK-16 A在对来自HIV-1感染个体的细胞的离体研究中也优于prostratin,同时保持对细胞活力和T细胞活化的最小细胞毒性作用。此外,EK-16 A与其他LRA在重新激活潜伏的HIV-1方面表现出协同作用。机制研究表明,EK-16 A是一种PKCγ激活剂,通过NF-κB信号通路促进HIV-1转录起始,通过P-TEF B信号通路促进转录延长。旨在将这种化合物添加到根除HIV-1的治疗武库中的进一步研究正在进行中。
Cells harboring latent HIV-1 pose a major obstacle to eradication of the virus. The ‘shock and kill’ strategy has been broadly explored to purge the latent reservoir; however, none of the current latency-reversing agents (LRAs) can safely and effectively activate the latent virus in patients. In this study, we report an ingenol derivative called EK-16A, isolated from the traditional Chinese medicinal herb Euphorbia kansui, which displays great potential in reactivating latent HIV-1. A comparison of the doses used to measure the potency indicated EK-16A to be 200-fold more potent than prostratin in reactivating HIV-1 from latently infected cell lines. EK-16A also outperformed prostratin in ex vivo studies on cells from HIV-1-infected individuals, while maintaining minimal cytotoxicity effects on cell viability and T cell activation. Furthermore, EK-16A exhibited synergy with other LRAs in reactivating latent HIV-1. Mechanistic studies indicated EK-16A to be a PKCγ activator, which promoted both HIV-1 transcription initiation by NF-κB and elongation by P-TEFb signal pathways. Further investigations aimed to add this compound to the therapeutic arsenal for HIV-1 eradication are in the pipeline.
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