Impact of SARS-CoV-2 exposure history on the T cell and IgG response.

Impact of SARS-CoV-2 exposure history on the T cell and IgG response.
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DOI:
10.1016/j.xcrm.2022.100898
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发表时间:
2023-01-17
影响因子:
14.3
通讯作者:
Riou, Catherine
Riou, Catherine
中科院分区:
医学1区
文献类型:
--
作者:
Keeton, Roanne;Tincho, Marius B.;Suzuki, Akiko;Benede, Ntombi;Ngomti, Amkele;Baguma, Richard;Chauke, Masego, V;Mennen, Mathilda;Skelem, Sango;Adriaanse, Marguerite;Grifoni, Alba;Weiskopf, Daniela;Sette, Alessandro;Bekker, Linda -Gail;Gray, Glenda;Ntusi, Ntobeko A. B.;Burgers, Wendy A.;Riou, Catherine

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由于感染或接种而多次暴露于严重急性呼吸综合征冠状病毒2型(SARS-CoV-2),可以有效地增强尖峰抗体反应。关于反复暴露对T细胞反应的影响,人们知之甚少。在这里,我们比较了190名有复杂SARS-CoV-2暴露史的人外周血中SARS-CoV-2特异性T细胞和免疫球蛋白G(IgG)反应的患病率和频率。正如预期的那样,不断增加的SARS-CoV-2尖峰暴露显著增强了免疫球蛋白应答的幅度,而重复暴露增加了T细胞应答者的数量,但对循环中SARS-CoV-2尖峰特异性T细胞频率的影响较小。此外,我们发现,暴露的数量和性质(而不是感染和接种的顺序)塑造了尖峰免疫反应,与仅接种疫苗相比,混合免疫后尖峰特异的CD4T细胞显示出更大的多功能潜力。从不断演变的病毒和免疫学格局中确定适应性免疫的特征可能会为疫苗战略提供依据,以在大流行进展时获得最佳免疫。SARS-CoV-2尖峰重复暴露增强了免疫球蛋白G应答,重复尖峰暴露并没有增加尖峰T细胞应答的频率,T细胞应答的比例在三次暴露后达到平台期,混合免疫比只接种Keeton等人诱导了更多的多功能尖峰CD4细胞。研究多次暴露于SARS-CoV-2尖峰病毒(通过感染和/或疫苗接种)对T细胞和免疫球蛋白反应的影响。他们表明,暴露次数的增加会增强免疫球蛋白反应的大小,但对SARS-CoV-2尖峰特异性T细胞的大小没有重大影响。
Multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exposures, from infection or vaccination, can potently boost spike antibody responses. Less is known about the impact of repeated exposures on T cell responses. Here, we compare the prevalence and frequency of peripheral SARS-CoV-2-specific T cell and immunoglobulin G (IgG) responses in 190 individuals with complex SARS-CoV-2 exposure histories. As expected, an increasing number of SARS-CoV-2 spike exposures significantly enhances the magnitude of IgG responses, while repeated exposures improve the number of T cell responders but have less impact on SARS-CoV-2 spike-specific T cell frequencies in the circulation. Moreover, we find that the number and nature of exposures (rather than the order of infection and vaccination) shape the spike immune response, with spike-specific CD4 T cells displaying a greater polyfunctional potential following hybrid immunity compared with vaccination only. Characterizing adaptive immunity from an evolving viral and immunological landscape may inform vaccine strategies to elicit optimal immunity as the pandemic progress. Repeated SARS-CoV-2 spike exposures enhance IgG responses Repeated spike exposures do not enhance the frequency of spike T cell responses The proportion of T cell responders reaches a plateau after three exposures Hybrid immunity induces more polyfunctional spike CD4 cells than vaccination only Keeton et al. investigate the effect of multiple exposures to SARS-CoV-2 spike (through infection and/or vaccination) on T cell and IgG responses. They show that an increasing number of exposures enhances the magnitude of IgG responses but has no major impact on the magnitude of SARS-CoV-2 spike-specific T cells.
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DOI: 10.1126/science.abm0829
发表时间: 2021-12-03
期刊: Science (New York, N.Y.)
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