Tunneling nanotubes (TNT) mediate long-range gap junctional communication: Implications for HIV cell to cell spread.

Tunneling nanotubes (TNT) mediate long-range gap junctional communication: Implications for HIV cell to cell spread.
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DOI:
10.1038/s41598-017-16600-1
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发表时间:
2017-11-30
期刊:
影响因子:
4.6
通讯作者:
Eugenin E
Eugenin E
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Okafo G;Prevedel L;Eugenin E

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细胞间通讯对于多细胞系统的发展至关重要,并由可溶性因子、外泌体、间隙连接 (GJ) 通道和最近描述的隧道纳米管 (TNT) 协调。我们和其他人已经证明,TNT 样结构主要存在于致病条件下,包括 HIV 感染。然而,人们对 TNT 的性质、功能和通信特性仍然知之甚少。在这篇手稿中,我们证明了 HIV 感染诱导的 TNT 在其膜延伸末端具有功能性 GJ,并且 TNT 在 HIV 感染期间介导长距离 GJ 通讯。 HIV 感染期间阻断或减少 GJ 通讯会导致 TNT 细胞间接触异常,从而损害 HIV 传播和复制。因此,TNT 和相关的 GJ 是有效的细胞间通讯和病毒传播所必需的。我们的数据表明,靶向 TNT/GJ 可能为治疗 HIV 提供新的治疗机会。
Cell-to-cell communication is essen for the development of multicellular systems and is coordinated by soluble factors, exosomes, gap junction (GJ) channels, and the recently described tunneling nanotubes (TNTs). We and others have demonstrated that TNT-like structures are mostly present during pathogenic conditions, including HIV infection. However, the nature, function, and communication properties of TNTs are still poorly understood. In this manuscript, we demonstrate that TNTs induced by HIV infection have functional GJs at the ends of their membrane extensions and that TNTs mediate long-range GJ communication during HIV infection. Blocking or reducing GJ communication during HIV infection resulted in aberrant TNT cell-to-cell contact, compromising HIV spread and replication. Thus, TNTs and associated GJs are required for the efficient cell-to-cell communication and viral spread. Our data indicate that targeting TNTs/GJs may provide new therapeutic opportunities for the treatment of HIV.
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