An effective strategy for recapitulating N-terminal heptad repeat trimers in enveloped virus surface glycoproteins for therapeutic applications.

An effective strategy for recapitulating N-terminal heptad repeat trimers in enveloped virus surface glycoproteins for therapeutic applications.
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一种在包膜病毒表面糖蛋白中重演 N 端七肽重复三聚体用于治疗应用的有效策略

DOI:
10.1039/c5sc04046a
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发表时间:
2016-03-01
期刊:
影响因子:
8.4
通讯作者:
Liu K
Liu K
中科院分区:
化学1区
文献类型:
--
作者:
Lai W;Wang C;Yu F;Lu L;Wang Q;Jiang X;Xu X;Zhang T;Wu S;Zheng X;Zhang Z;Dong F;Jiang S;Liu K

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我们报告了一种有效的策略,重演NHR α-螺旋三聚体在HIV-1膜融合蛋白作为有前途的抗病毒治疗。将来自I类病毒融合蛋白的N-末端七肽重复(NHR)的肽螯合成非聚集性三聚体卷曲螺旋构象仍然是一个主要挑战。在这里,我们实施了一种合成策略,以稳定NHR-螺旋三聚体,与人类免疫缺陷病毒1型(HIV-1)gp 41融合蛋白作为最初的重点。通过依赖于卷曲螺旋结构的易处理性和额外的异肽桥连策略,在合成的gp 41 NHR衍生肽序列中实现了一组三聚体支架。其中,(N36 M)3折叠作为一个高度稳定的螺旋三聚体,并表现出有前途的抑制活性,对HIV-1感染,特殊的抗蛋白水解,和有效的天然配体结合能力。我们预期,本文所述的三聚体卷曲螺旋重演方法可能具有更广泛的适用性,以产生其他I类包膜病毒的NHR三聚体,并制备用于生物医学应用的某些天然蛋白质-蛋白质相互作用的螺旋三级结构模拟物。
We report an efficient strategy to recapitulate NHR α-helical trimers in the HIV-1 membrane fusion protein as promising antiviral therapeutics. Sequestering peptides derived from the N-terminal heptad repeat (NHR) of class I viral fusion proteins into a non-aggregating trimeric coiled-coil conformation remains a major challenge. Here, we implemented a synthetic strategy to stabilize NHR-helical trimers, with the human immunodeficiency virus type 1 (HIV-1) gp41 fusion protein as the initial focus. A set of trimeric scaffolds was realized in a synthetic gp41 NHR-derived peptide sequence by relying on the tractability of coiled-coil structures and an additional isopeptide bridge-tethering strategy. Among them, (N36M)3 folded as a highly stable helical trimer and exhibited promising inhibitory activity against HIV-1 infection, exceptional resistance to proteolysis, and effective native ligand-binding capability. We anticipate that the trimeric coiled-coil recapitulation methodology described herein may have broader applicability to yield NHR trimers of other class I enveloped viruses and to prepare helical tertiary structure mimetics of certain natural protein–protein interactions for biomedical applications.
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发表时间: 1999-10-01
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影响因子: 64.5
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