Baseline Ad5 serostatus does not predict Ad5 HIV vaccine-induced expansion of adenovirus-specific CD4+ T cells.

Baseline Ad5 serostatus does not predict Ad5 HIV vaccine-induced expansion of adenovirus-specific CD4+ T cells.
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DOI:
10.1038/nm.1989
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发表时间:
2009-08
期刊:
影响因子:
82.9
通讯作者:
--
中科院分区:
医学1区
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--
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在Merck STEP试验中,接种Ad 5-HIV-1载体的5型腺病毒(Ad 5)血清阳性受试者中HIV-1获得可能增加的潜在机制仍不清楚。我们发现Ad 5血清状态不能预测Ad 5特异性CD 4 + T细胞频率,并且在接种疫苗后,在Ad 5血清阳性和血清阴性受试者之间没有观察到Ad 5特异性CD 4 + T细胞的持久显著差异。这些发现表明,在STEP试验中,Ad 5特异性CD 4 + T细胞在增加HIV-1易感性方面没有因果作用。
The mechanisms underlying possible increased HIV-1 acquisition in adenovirus 5 (Ad5)-seropositive subjects vaccinated with Ad5-HIV-1 vectors in the Merck STEP trial remain unclear. We find Ad5 serostatus does not predict Ad5-specific CD4+ T-cell frequency, and no durable significant differences in Ad5-specific CD4+ T-cells between Ad5-seropositive and seronegative subjects were observed following vaccination. These findings indicate no causative role for Ad5-specific CD4+ T-cells in increasing HIV-1 susceptibility in the STEP trial.
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