Adenovirus transport via direct interaction of cytoplasmic dynein with the viral capsid hexon subunit.

Adenovirus transport via direct interaction of cytoplasmic dynein with the viral capsid hexon subunit.
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腺病毒通过细胞质动力蛋白与病毒capsid己糖亚基的直接相互作用进行转运。

DOI:
10.1016/j.chom.2009.11.006
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发表时间:
2009-12-17
影响因子:
30.3
通讯作者:
Vallee RB
Vallee RB
中科院分区:
医学1区
文献类型:
--
作者:
Bremner KH;Scherer J;Yi J;Vershinin M;Gross SP;Vallee RB

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在感染早期,腺病毒利用微管运动细胞质动力蛋白作为裸露的衣壳行进到细胞核。本研究旨在探讨病毒如何招募动力蛋白,并探讨动力蛋白的多种调节因子在病毒转运中的作用。细胞质动力蛋白、动力蛋白和NudE/NudEL,但不包括LIS 1或ZW 10,与进入的核内体后腺病毒颗粒共定位。单独的动力蛋白以pH依赖性方式与腺病毒亚基六邻体相互作用,而腺病毒亚基六邻体又与重组动力蛋白中间链和轻中间链1相互作用。干扰dynactin功能没有影响与腺病毒共定位的动力蛋白,但减少病毒运行长度。表达六邻体或注射抗六邻体抗体抑制病毒转运,而不影响高尔基体分布。这些结果确定六邻体作为细胞质动力蛋白的直接受体,其通过新颖且不同于已知生理动力蛋白货物形式的机制招募动力蛋白运输到细胞核。
Early in infection, adenovirus travels to the nucleus as a naked capsid using the microtubule motor cytoplasmic dynein. This study was initiated to address how the virus recruits dynein, and to explore the role of dynein's diverse regulatory factors in virus transport. Cytoplasmic dynein, dynactin and NudE/NudEL, but not LIS1 or ZW10, colocalized with incoming, post-endosomal adenovirus particles. Dynein alone interacted in a pH-dependent manner with the adenovirus subunit hexon, which, in turn, interacted with recombinant dynein intermediate chain and light intermediate chain 1. Interference with dynactin function had no effect on dynein colocalization with adenovirus, but reduced virus run length. Expression of hexon or injection of anti-hexon antibody inhibited virus transport without affecting Golgi distribution. These results identify hexon as a direct receptor for cytoplasmic dynein, which recruits dynein for transport to the nucleus by a mechanism both novel and distinct from that for known physiological dynein cargo forms.
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