The bromodomain and extraterminal domain inhibitor bromosporine synergistically reactivates latent HIV-1 in latently infected cells.

The bromodomain and extraterminal domain inhibitor bromosporine synergistically reactivates latent HIV-1 in latently infected cells.
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溴结构域和末端结构域抑制剂溴孢菌素协同重新激活潜伏感染细胞中的潜伏 HIV-1

DOI:
10.18632/oncotarget.21585
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发表时间:
2017-11-07
期刊:
影响因子:
--
通讯作者:
Zhu H
Zhu H
中科院分区:
其他
文献类型:
--
作者:
Pan H;Lu P;Shen Y;Wang Y;Jiang Z;Yang X;Zhong Y;Yang H;Khan IU;Zhou M;Li B;Zhang Z;Xu J;Lu H;Zhu H

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长寿的潜伏性HIV - 1储存库是完全治愈获得性免疫缺陷综合征(艾滋病)的主要障碍。在此我们报道一种新型的含溴结构域和额外末端结构域(BET)抑制剂——溴孢素,它能广泛作用于BET蛋白,能够在不同的潜伏模型中单独强效地重新激活HIV - 1复制,并且当与普罗司他丁或肿瘤坏死因子 -α联合使用时效果更强。此外,溴孢素处理在体外从接受抑制性抗逆转录病毒治疗(ART)的感染者的静息CD4 + T细胞中诱导出HIV - 1全长转录本,且没有明显的细胞毒性或T细胞的全面激活。最后,我们的数据表明,Tat在溴孢素介导的潜伏HIV - 1重新激活中起关键作用,这涉及细胞周期蛋白依赖性激酶9(CDK9)T环磷酸化的增加。总之,我们发现BET抑制剂溴孢素,单独使用或与其他激活剂一起使用,可能是未来HIV - 1根除策略的一个候选药物。
The long-lived latent HIV-1 reservoir is the major barrier for complete cure of Acquired Immune Deficiency Syndrome (AIDS). Here we report that a novel bromodomain and extraterminal domain (BET) inhibitor bromosporine which can broadly target BETs, is able to potently reactivate HIV-1 replication in different latency models alone and more powerful when combined with prostratin or TNF-α. Furthermore, the treatment with bromosporine induced HIV-1 full-length transcripts in resting CD4+ T cells from infected individuals with suppressive antiretroviral therapy (ART) ex vivo, with no obvious cytotoxicity or global activation of T cell. Finally, our data suggest that Tat plays a critical role in the bromosporine-mediated reactivation of latent HIV-1, which involved the increase of CDK9 T-loop phosphorylation. In summary, we found that the BET inhibitor bromosporine, alone or with other activators, might be a candidate for future HIV-1 eradication strategies.
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