相关实验视频

Updated: Jun 23, 2025

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Published on: September 23, 2022

儿童对SARS-CoV-2的T细胞混合免疫力:一项纵向研究

Martin Qui¹, Smrithi Hariharaputran¹, Shou Kit Hang¹

¹Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore.

|June 19, 2024

概括

接种疫苗的5-11岁儿童的混合免疫力增强了对SARS-CoV-2的T细胞反应,反映了成人混合免疫力. 这种针对多个病毒蛋白的免疫反应的多样化提供了对严重的COVID-19的保护.

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:

在SARS-CoV-2疫苗接种和感染后儿童的混合免疫力尚未得到充分理解.
在接种疫苗的儿科人群中,突破性感染正在增加.
了解混合免疫对于评估疫苗有效性和儿童疾病结果至关重要.

研究的目的:

在突破性SARS-CoV-2感染后,研究mRNA疫苗接种儿童 (5-11岁) 的T细胞反应.
分析这些T细胞反应的规模,特异性和细胞因子概况.
为了比较儿科杂交免疫特征与成人观察到的特征.

主要方法:

对29名5至11岁的mRNA接种疫苗的儿童进行了前性纵向研究.
在16个月的6个时间点分析了159个血液样本.
细胞因子释放试验和细胞内细胞因子染色以表征抗原特异性T细胞反应.

主要成果:

在接种疫苗的儿童中,突破性感染增强了对Spike特异的Th1反应.
尖端特异性T细胞显示了CD4+IFN-γ+IL10+细胞的丰富,类似于具有混合免疫力的成年人.
接种疫苗并没有阻碍多特异性T细胞对其他SARS-CoV-2蛋白质的反应 (膜,核蛋白,ORF3a/7/8).

结论:

接种mRNA疫苗的儿童在突破性感染后可以增强和多样化T细胞对多个SARS-CoV-2蛋白质的反应.
这些发现表明,儿童的混合细胞免疫力与成年人的免疫力相似.
这种免疫特征与抵抗严重的COVID-19相关.

关键词:

适应性免疫是一种适应性免疫.在 COVID-19 疫情中,免疫学免疫学免疫学儿科儿科儿科一个T细胞细胞.疫苗接种疫苗接种

更多相关视频

Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8+ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8+ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector

Published on: November 28, 2018

Development of an IFN-γ ELISpot Assay to Assess Varicella-Zoster Virus-specific Cell-mediated Immunity Following Umbilical Cord Blood Transplantation

Development of an IFN-γ ELISpot Assay to Assess Varicella-Zoster Virus-specific Cell-mediated Immunity Following Umbilical Cord Blood Transplantation

Published on: July 9, 2014

相关概念视频

Cells of the Adaptive Immune Response

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...