急性轮状病毒感染与循环记忆CD4的诱导有关
Chikondi Malamba-Banda1,2,3,4, Chimwemwe Mhango2, Prisca Benedicto-Matambo2,3,4
1Biological Sciences Departments, Malawi University of Science and Technology, Thyolo, Malawi.
Scientific reports
|June 2, 2023
概括
马拉维儿童的罗塔病毒感染显示出对抗病毒CD4+T细胞的有限诱导. 虽然T助手2细胞在感染期间增加,但很少检测到关键的细胞因子产生T细胞,这影响了对免疫保护的理解.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 儿科 儿科 儿科
背景情况:
- 通过CD4+T细胞介导的免疫对于动物模型中对轮状病毒的保护至关重要,但人类的相关性尚不清楚.
- 了解儿童的T细胞反应对于评估疫苗疗效和疾病病原性至关重要.
研究的目的:
- 在马拉维住院患有轮状病毒感染的儿童中描述急性和康复性CD4+T细胞反应.
- 为了研究诱导产生细胞因子的轮状病毒特异性CD4+T细胞.
主要方法:
- 在急性和康复期血液样本中分析CD4+T细胞子集 (效应器,中央记忆,T辅助器2).
- 检测特定于轮状病毒的VP6特异性CD4+T细胞,产生IFN-γ和/或TNF-α.
- 全血线性刺激以评估CD4+T细胞细胞因子的产生.
主要成果:
- 与康复期相比,患有轮状病毒感染的儿童在急性疾病期间表现出效应细胞和中央记忆T助手2细胞的增加.
- 很少检测到循环的轮状病毒特异性CD4+T细胞产生IFN-γ和/或TNF-α.
- 大多数 CD4+ T 细胞响应神经元刺激是非细胞因子 IFN-γ 和/或 TNF-α 的非细胞因子生产者.
结论:
- 在马拉维儿童中观察到对抗病毒IFN-γ和/或TNF-α产生CD4+T细胞的有限诱导,这些儿童确诊患有轮状病毒感染.
- 这些发现表明,尽管T助手2细胞发生了变化,但细胞免疫反应受限,这影响了对保护性免疫的理解.
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