A Distinct Lung-Interstitium-Resident Memory CD8(+) T Cell Subset Confers Enhanced Protection to Lower Respiratory Tract Infection.
A Distinct Lung-Interstitium-Resident Memory CD8(+) T Cell Subset Confers Enhanced Protection to Lower Respiratory Tract Infection.
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独特的肺部 - 居民居民记忆CD8(+)T细胞子集赋予了对下呼吸道感染的增强保护。
DOI:
10.1016/j.celrep.2016.07.037
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发表时间:
2016-08-16
期刊:
影响因子:
8.8
通讯作者:
Joyce S
中科院分区:
文献类型:
--
作者:
Gilchuk P;Hill TM;Guy C;McMaster SR;Boyd KL;Rabacal WA;Lu P;Shyr Y;Kohlmeier JE;Sebzda E;Green DR;Joyce S
The nature and anatomic location of the protective memory CD8+ T cell subset induced by intranasal vaccination remain poorly understood. We developed a vaccination model to assess the anatomic location of protective memory CD8+ T cells and their role in lower airway infections. Memory CD8+ T cells elicited by local intranasal, but not systemic vaccination with an engineered non-replicative CD8+ T cell-targeted antigen confer enhanced protection to a lethal respiratory viral challenge. This protection depends on a distinct CXCR3LO resident memory CD8+ T cell (Trm) population that preferentially localizes to the pulmonary interstitium. Interstitial Trm —by being positioned close to the mucosa where infection occurs—act before inflammation can recruit circulating memory CD8+ T cells into the lung tissue. This results in a local protective immune response as early as one day post-infection. Hence, vaccine strategies that induce lung interstitial Trm may confer better protection against respiratory pathogens
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