Tetravalent Immunogen Assembled from Conserved Regions of HIV-1 and Delivered as mRNA Demonstrates Potent Preclinical T-Cell Immunogenicity and Breadth.

Tetravalent Immunogen Assembled from Conserved Regions of HIV-1 and Delivered as mRNA Demonstrates Potent Preclinical T-Cell Immunogenicity and Breadth.
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DOI:
10.3390/vaccines8030360
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发表时间:
2020-07-06
期刊:
影响因子:
7.8
通讯作者:
Hanke T
Hanke T
中科院分区:
医学3区
文献类型:
--
作者:
Moyo N;Wee EG;Korber B;Bahl K;Falcone S;Himansu S;Wong AL;Dey AK;Feinberg M;Hanke T

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疫苗可能是结束 HIV-1/艾滋病流行的关键工具之一,它可以防止 HIV-1 在未感染人群中传播,并治愈 HIV-1 感染者。目前疫苗领域的主流观点是引入保护性抗体,然而,有效的疫苗可能需要利用保护性T细胞。我们假设,将 T 细胞反应集中在 HIV-1 蛋白质组最脆弱的区域,同时最大限度地提高疫苗与循环病毒之间的完美匹配,将控制 HIV-1 复制。我们目前使用复制缺陷型猿(黑猩猩)腺病毒和痘病毒修饰的痘苗病毒安卡拉的组合,向人类志愿者提供二价保守马赛克免疫原。在这里,我们通过设计指定为 HIVconsvM 的四价免疫原来利用 mRNA 平台,并证明脂质纳米颗粒中配制的 mRNA 在临床前模型中诱导有效、广泛和多功能的 T 细胞反应。这些结果支持在人体实验医学试验中优化和进一步开发这种疫苗策略。
A vaccine will likely be one of the key tools for ending the HIV-1/AIDS epidemic by preventing HIV-1 spread within uninfected populations and achieving a cure for people living with HIV-1. The currently prevailing view of the vaccine field is to introduce protective antibodies, nevertheless, a vaccine to be effective may need to harness protective T cells. We postulated that focusing a T-cell response on the most vulnerable regions of the HIV-1 proteome while maximizing a perfect match between the vaccine and circulating viruses will control HIV-1 replication. We currently use a combination of replication-deficient simian (chimpanzee) adenovirus and poxvirus modified vaccinia virus Ankara to deliver bivalent conserved-mosaic immunogens to human volunteers. Here, we exploit the mRNA platform by designing tetravalent immunogens designated as HIVconsvM, and demonstrate that mRNA formulated in lipid nanoparticles induces potent, broad and polyfunctional T-cell responses in a pre-clinical model. These results support optimization and further development of this vaccine strategy in experimental medicine trials in humans.
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发表时间: 2017-02-01
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