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首页> 外文期刊>Vaccine >Adjuvants recognized by toll-like receptors inhibit the induction of polarized type 2 T cell responses by natural attachment (G) protein of respiratory syncytial virus
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Adjuvants recognized by toll-like receptors inhibit the induction of polarized type 2 T cell responses by natural attachment (G) protein of respiratory syncytial virus

机译:被通行费样受体识别的佐剂通过呼吸道合胞病毒的天然附着蛋白(G)抑制极化2型T细胞应答的诱导

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摘要

Immunization with native fusion (F) protein from respiratory syncytial virus (RSV) adsorbed to alum adjuvant generates greater than fourfold rises in serum neutralizing antibody titers in approximately 50% of seropositive humans. Using BALB/c mice we demonstrate herein that enhanced neutralization titers and accelerated clearance of virus from the lungs after challenge are possible if the attachment (G) glycoprotein is added to F protein-based vaccines. We further reveal for the first time that polarized type 2 T cell responses and immunopathology associated with G protein are inhibited by adjuvants recognized by toll-like receptors (TLR). Co-formulation with compounds that targeted TLR-2, TLR-3, TLR-4, or TLR-9 elicited significantly diminished type 2 T cell responses that caused granulocytic inflammation and eosinophilia in the airways after challenge. These results were not observed with recombinant IL-12 or QS-21. The data are important for improving combination vaccines for RSV.
机译:用呼吸道合胞病毒(RSV)吸附到明矾佐剂中的天然融合蛋白(F)进行免疫,可在约50%血清反应阳性的人体内产生中和抗体滴度的四倍以上升高。使用BALB / c小鼠,我们在本文中证明,如果将附着(G)糖蛋白添加到基于F蛋白的疫苗中,则攻击后增强的中和效价和病毒从肺中的加速清除是可能的。我们进一步首次揭示极化的2型T细胞反应和与G蛋白相关的免疫病理学受到通行费样受体(TLR)识别的佐剂的抑制。与靶向TLR-2,TLR-3,TLR-4或TLR-9的化合物共同配制可显着降低2型T细胞应答,从而在激发后引起气道中的粒细胞炎症和嗜酸性粒细胞增多。用重组IL-12或QS-21未观察到这些结果。数据对于改进RSV的组合疫苗很重要。

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