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柯萨奇病毒A16型抗原与呼吸道黏膜上皮组织内先天淋巴细胞的相互关系及其疫苗应用价值 被引量:5
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作者 王永蓉 廉亚茹 +10 位作者 蒋国润 范胜涛 冯敏 杨二霞 姜莉 董承红 赵志梅 王丽春 廖芸 张莹 李琦涵 《微生物与感染》 2018年第6期350-361,共12页
柯萨奇病毒A16型(coxsakievirus A16,CA16)是引起手足口病的主要病原,但其发病及相关免疫机制尚不清楚,导致其疫苗研发面临诸多困难。众多研究表明,呼吸道黏膜上皮细胞及其相关免疫细胞尤其是天然淋巴细胞(innate lymphoid cell,ILC),... 柯萨奇病毒A16型(coxsakievirus A16,CA16)是引起手足口病的主要病原,但其发病及相关免疫机制尚不清楚,导致其疫苗研发面临诸多困难。众多研究表明,呼吸道黏膜上皮细胞及其相关免疫细胞尤其是天然淋巴细胞(innate lymphoid cell,ILC),在很大程度上促进病毒感染中天然免疫和适应性免疫反应的激活。然而,ILC在CA16感染诱导的免疫反应中如何发挥作用仍未知晓。为揭示CA16感染过程中ILC与病原的相互关系及发挥的作用,首先利用定量反转录-聚合酶链反应(quantitative reverse transcription-polymerase chain reaction,qRT-PCR)检测CA16感染的人支气管上皮细胞16HBE和以特别配制的佐剂导入CA16灭活抗原的小鼠支气管上皮细胞CP-M175中对ILC具有激活效应的重要基因表达情况。然后,将特别配制的CA16灭活疫苗通过鼻腔免疫BALB/c小鼠,分析呼吸道黏膜组织中ILC与病毒抗原之间的相互关系。体内外实验结果均显示,CA16活病毒和灭活的病毒抗原能诱导ILC活化所需信号通路分子的表达增加,且ILC分泌的细胞因子表达增加。免疫荧光和共聚焦显微镜观察结果亦证实,病毒抗原与ILC1/ILC3分别存在共定位现象。比较4种途径/程序免疫的小鼠体内抗CA16中和抗体和特异性细胞免疫应答情况,发现采用特别配制的CA16灭活疫苗免疫小鼠能诱导产生较好的抗病毒免疫应答。结果提示,CA16抗原能通过激活ILC及其相关信号通路诱导产生有效的免疫反应。 展开更多
关键词 柯萨奇病毒A16型 天然淋巴细胞 树突细胞 呼吸道黏膜
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A comparative study of the characteristics of two Coxsackie A virus type 16 strains (genotype B) 被引量:5
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作者 YANG ErXia ZHAO Heng +12 位作者 ZHANG Ying LIU JianSheng LIAO Yun WANG LiChun CUI PingFang YANG LiXian LIU LongDing dong chenghong dong ShaoZhong SHAO CongWen JIANG Li SUN Le LI QiHan 《Science China(Life Sciences)》 SCIE CAS 2012年第4期336-342,共7页
Coxsackie A virus is one of the major pathogens associated with hand, foot and mouth disease (HFMD). The etiological characteristics of Coxsackie A virus type 16 (CA16) are thought to correlate with the pathological p... Coxsackie A virus is one of the major pathogens associated with hand, foot and mouth disease (HFMD). The etiological characteristics of Coxsackie A virus type 16 (CA16) are thought to correlate with the pathological process of its infection. Two CA16 strains that were isolated from a severe HFMD patient presented with different plaque forms. This observation, along with biological analysis, indicated that the differences in the strains' biological characteristics, such as proliferation kinetics and immunogenicity, correlate with differences in their pathogenicity toward neonatal mice. Furthermore, these differences are thought to be associated with the sequence of the 5′ non-coding region of the viral genome and the VP1 structural region sequence. The results suggest that the biological and genetic characteristics of the CA16 viral strains are relevant to their pathogenicity. 展开更多
关键词 CA16 strains proliferation kinetics PATHOGENICITY
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