Frequent and Durable Anti-HIV Envelope VIV2 IgG Responses Induced by HIV-1 DNA Priming and HIV-MVA Boosting in Healthy Tanzanian Volunteers.

Frequent and Durable Anti-HIV Envelope VIV2 IgG Responses Induced by HIV-1 DNA Priming and HIV-MVA Boosting in Healthy Tanzanian Volunteers.
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DOI:
10.3390/vaccines8040681
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发表时间:
2020-11-13
期刊:
影响因子:
7.8
通讯作者:
Biberfeld G
Biberfeld G
中科院分区:
医学3区
文献类型:
--
作者:
Joachim A;Msafiri F;Onkar S;Munseri P;Aboud S;Lyamuya EF;Bakari M;Billings E;Robb ML;Wahren B;Mhalu FS;Sandström E;Rao M;Nilsson C;Biberfeld G

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我们评估了 29 名疫苗接种者对人类免疫缺陷病毒 (HIV) 包膜可变区 1 和 2 (V1V2) 的抗体反应,这些疫苗接种者在 I/II 期 HIVIS03 疫苗试验中接受了 3 次 HIV-1 DNA 免疫接种和两次 HIV 改良痘苗病毒安卡拉 (MVA) 加强接种。在 HIVIS06 试验三年后,20 名疫苗接种者接受了第三次 HIV-MVA 加强免疫。使用酶联免疫吸附测定 (ELISA) 分析 HIV-1 A244、CN54、共识 C 和病例 A2 的 gp70V1V2 蛋白的 IgG 和 IgG 抗体亚类。 A244、Consensus C 和 MN 的环状 V2 肽用于表面等离子共振 (SPR) 测定。第二次 HIV-MVA 4 周后,97% 的 HIVIS03 疫苗接种者检测到针对 A244 的抗 V1V2 IgG 抗体,三年后为 75%,第三次 HIV-MVA 后为 95%。在第二次 HIV-MVA 后 4 周,抗 CN54 V1V2 IgG 的检测率为 48%。 SPR 数据支持了这一发现。 IgG 反应主要是 IgG1。第二次 HIV-MVA 后 4 周,85% 的疫苗接种者产生了针对 V1V2 A244 的 IgG1 抗体,该抗体在 25% 内持续了三年。 V1V2 A244 的 IgG3 和 IgG4 抗体很少见。总之,HIV-DNA/MVA 疫苗方案在大部分接种者中诱导了持久的 V1V2 IgG 抗体反应。
We evaluated antibody responses to the human immunodeficiency virus (HIV) envelope variable regions 1 and 2 (V1V2) in 29 vaccinees who had received three HIV-1 DNA immunizations and two HIV-modified vaccinia virus Ankara (MVA) boosts in the phase I/II HIVIS03 vaccine trial. Twenty vaccinees received a third HIV-MVA boost after three years in the HIVIS06 trial. IgG and IgG antibody subclasses to gp70V1V2 proteins of HIV-1 A244, CN54, Consensus C, and Case A2 were analysed using an enzyme-linked immunosorbent assay (ELISA). Cyclic V2 peptides of A244, Consensus C, and MN were used in a surface plasmon resonance (SPR) assay. Four weeks after the second HIV-MVA, anti-V1V2 IgG antibodies to A244 were detected in 97% of HIVIS03 vaccinees, in 75% three years later, and in 95% after the third HIV-MVA. Anti-CN54 V1V2 IgG was detectable in 48% four weeks after the second HIV-MVA. The SPR data supported the findings. The IgG response was predominantly IgG1. Four weeks after the second HIV-MVA, 85% of vaccinees had IgG1 antibodies to V1V2 A244, which persisted in 25% for three-years. IgG3 and IgG4 antibodies to V1V2 A244 were rare. In conclusion, the HIV-DNA/MVA vaccine regimen induced durable V1V2 IgG antibody responses in a high proportion of vaccinees.
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发表时间: 2011-07
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影响因子: 3.7
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DOI: 10.1016/s0065-2776(08)60295-3
发表时间: 1973-01-01
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DOI: 10.1093/infdis/jis033
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