CD4+ T-cell responses among adults and young children in response to Streptococcus pneumoniae and Haemophilus influenzae vaccine candidate protein antigens.

CD4+ T-cell responses among adults and young children in response to Streptococcus pneumoniae and Haemophilus influenzae vaccine candidate protein antigens.
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成人和幼儿对肺炎链球菌和流感嗜血杆菌疫苗候选蛋白抗原的 CD4 T 细胞反应。

DOI:
10.1016/j.vaccine.2013.03.060
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发表时间:
2013
期刊:
影响因子:
5.5
通讯作者:
Pichichero,MichaelE
Pichichero,MichaelE
中科院分区:
医学3区
文献类型:
--
作者:
Sharma,SharadK;Roumanes,David;Almudevar,Anthony;Mosmann,TimR;Pichichero,MichaelE

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我们表征了成人和幼儿中CD 4 + T辅助(h)细胞的细胞因子谱,以确定是否对肺炎链球菌(Spn)的下一代候选疫苗抗原PspA、PcpA、PhtD、PhtE、Ply、LytB和不可分型流感嗜血杆菌(NTHi)的蛋白D和OMP 26产生应答。成人具有对所有评估的抗原应答的疫苗抗原特异性Th 1和Th 2细胞,而幼儿具有大量产生IL-2的疫苗抗原特异性CD 4 +T细胞(p=0.004)。成人中的疫苗抗原特异性CD 4 + T细胞群主要是效应(TEM)和/或中央记忆(TCM)表型,分别由CD 45 RA − CCR 7+或CD 45 RA − CCR 7 −定义;然而,在幼儿中,抗原特异性IL-2产生的CD 4 +T细胞表现出CD 45 RA+表达(非记忆细胞)。我们的结论是,成人具有循环记忆CD 4 +T细胞(CD 45 RA −),可以被所有测试的Spn和NTHi蛋白疫苗候选抗原刺激,而幼儿的反应更有限。
We characterized cytokine profiles of CD4+T-helper (h) cells in adults and young children to ascertain if responses occur to next-generation candidate vaccine antigens PspA, PcpA, PhtD, PhtE, Ply, LytB of Streptococcus pneumonia (Spn) and protein D and OMP26 of non-typeable Haemophilus influenzae (NTHi). Adults had vaccine antigen-specific Th1 and Th2 cells responsive to all antigens evaluated whereas young children had significant numbers of vaccine antigen-specific CD4+T cells producing IL-2, (p=0.004). Vaccine antigen-specific CD4+T-cell populations in adults were largely of effector (TEM) and/or central memory (TCM) phenotypes as defined by CD45RA−CCR7+or CD45RA−CCR7−respectively; however among young children antigen-specific IL-2 producing CD4+T cells demonstrated CD45RA+expression (non-memory cells). We conclude that adults have circulating memory CD4+T cells (CD45RA−) that can be stimulated by all the tested Spn and NTHi protein vaccine candidate antigens, whereas young children have a more limited response.
蛋白质疫苗诱导未承诺的 IL-2 分泌人类和小鼠 CD4 T 细胞,而感染则诱导更多的 IFN-γ 分泌细胞1
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