在移植患者和常见变性免疫缺陷患者中,BNT162b2引起了针对SARS-CoV-2的有效细胞介导反应
Evelina La Civita1, Carla Zannella2,3, Stefano Brusa1
1Department of Translational Medical Sciences, University of Naples "Federico II", 80131 Naples, Italy.
Viruses
|August 26, 2023
概括
像常见变性免疫缺陷 (CVID) 和移植接受者 (KTR) 等免疫功能低下患者的COVID-19疫苗接种显示出抗体反应较弱,但T细胞反应较强. 在这些群体中,T细胞免疫力可能是更好地衡量疫苗的有效性.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 移植科学 移植科学
背景情况:
- 标准的COVID-19疫苗有效性评估仅依赖于抗体标位,忽视细胞免疫力.
- 脆弱的患者群体,包括常见变性免疫缺陷 (CVID) 和脏移植接受者 (KTR),可能会对疫苗接种产生改变的免疫反应.
- 了解疫苗接种后的幽默性和细胞性免疫力对于评估免疫受损个体的保护至关重要.
研究的目的:
- 在CVID患者和KTR患者中,评估BNT162b疫苗三剂接种后的幽默和细胞介导免疫反应.
- 将这些反应与健康对照 (HCs) 中观察到的反应进行比较.
- 探索T细胞反应的潜力,作为这些群体中疫苗有效性的更敏感标记.
主要方法:
- 招募了10名HC患者,19名CVID患者和17名KTR患者参加该研究.
- 接种了BNT162b SARS-CoV-2疫苗的三剂.
- 通过Anti-Spike Trimeric IgG度和中和抗体标位评估幽默反应.
- 通过通过干扰因子 (IFN-γ) 从由Spike蛋白表位体刺激的CD4+和CD8+T细胞释放来测量细胞介导免疫力.
主要成果:
- 健康对照组在接种疫苗后表现出强大的幽默性免疫反应,IgG度与中和抗体之间存在相关性.
- 与HC相比,CVID和KTR两组都表现出明显较低的幽默免疫反应.
- 干扰素 (IFN-γ) 释放,表明T细胞激活,在接种疫苗的HC,CVID患者和KTR中是可比的.
- 与仅接种疫苗的个体相比,接种疫苗并随后感染的个体显示出增强的幽默和细胞介导反应.
结论:
- 冠状病毒和KTR患者在接种SARS-CoV-2疫苗后获得有效的细胞介导免疫反应,但减少了幽默反应.
- 评估T细胞的反应,特别是IFN-γ的释放,可以作为免疫状况的更准确的指标在免疫受损人群.
- 这些发现凸显了需要考虑细胞免疫评估,以便全面了解疫苗在脆弱患者群体中的有效性.
更多相关视频
相关概念视频
Cell-mediated Immune Responses
68.8K
Overview
68.8K
Kidney Transplant I: Introduction
28
A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
28
Cytotoxic T Cells-mediated Immune Response
963
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
963
Immunodeficiency Diseases
973
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
There are three main causes of immunodeficiency...
973


