Quantifying the Antiviral Effect of IFN on HIV-1 Replication in Cell Culture.

Quantifying the Antiviral Effect of IFN on HIV-1 Replication in Cell Culture.
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DOI:
10.1038/srep11761
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发表时间:
2015-06-29
期刊:
影响因子:
4.6
通讯作者:
Mammano F
Mammano F
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ikeda H;Godinho-Santos A;Rato S;Vanwalscappel B;Clavel F;Aihara K;Iwami S;Mammano F

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I型干扰素(IFN)诱导数百个细胞基因的表达,其中一些具有直接的抗病毒活性。尽管IFN限制了HIV复制周期的不同步骤,但它们的主要抗病毒作用尚不清楚。我们首先在组织培养中量化了干扰素对HIV复制的抑制作用,使用了不同取向和生长动力学的病毒。通过结合实验和数学分析,我们确定了HIV复制和抑制的关键参数的定量估计,并证明了干扰素主要抑制从头感染(对X4和R5株分别为33%和47%),而不是病毒产生(对X4和R5株分别为15%和6%)。这一发现与来自患者的数据分析是一致的。
Type-I interferons (IFNs) induce the expression of hundreds of cellular genes, some of which have direct antiviral activities. Although IFNs restrict different steps of HIV replication cycle, their dominant antiviral effect remains unclear. We first quantified the inhibition of HIV replication by IFN in tissue culture, using viruses with different tropism and growth kinetics. By combining experimental and mathematical analyses, we determined quantitative estimates for key parameters of HIV replication and inhibition, and demonstrate that IFN mainly inhibits de novo infection (33% and 47% for a X4- and a R5-strain, respectively), rather than virus production (15% and 6% for the X4 and R5 strains, respectively). This finding is in agreement with patient-derived data analyses.
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