Superinfection of a defective human immunodeficiency virus type 1 provirus-carrying T cell clone with vif or vpu mutants gives cytopathic virus particles by homologous recombination.

Superinfection of a defective human immunodeficiency virus type 1 provirus-carrying T cell clone with vif or vpu mutants gives cytopathic virus particles by homologous recombination.
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用 vif 或 vpu 突变体重复感染有缺陷的人类免疫缺陷病毒 1 型原病毒 T 细胞克隆,通过同源重组产生细​​胞病变病毒颗粒。

DOI:
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发表时间:
1995
影响因子:
1.5
通讯作者:
K. Ikuta
K. Ikuta
中科院分区:
医学4区
文献类型:
--
作者:
M. Kishi;K. Tokunaga;Y. H. Zheng;M. Bahmani;M. Kakinuma;M. Nonoyama;P. Lai;K. Ikuta

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部分表达CD 4的T细胞克隆Vpr-1携带潜伏的vpr缺陷型HIV-1基因组,仅表达HIV-1 Nef蛋白,可被HIV-1重复感染。用非细胞病变的vif或vpu缺陷突变体重复感染Vpr-1,重新激活了vpr缺陷病毒,并导致同源重组和细胞病变。这些数据为同源重组提供了一个实验模型,同源重组是HIV-1获得遗传异质性的一个重要机制,当在体内缺陷病毒中发生时,它赋予了新的生物活性和毒力。
The partially CD4-expressing T cell clone, Vpr-1, which carries a latent vpr-defective HIV-1 genome and expresses HIV-1 Nef protein only, was permissive to superinfection by HIV-1. Superinfection of Vpr-1 with vif- or vpu-defective mutants, which were noncytopathic, reactivated the vpr-defective virus and led to homologous recombination and cytopathogenesis. The data provide an experimental model for homologous recombination being an important mechanism whereby HIV-1 acquires genetic heterogeneity, and when occurring among defective virus in vivo bestows novel biological activities and virulence.
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