针对COVID-19的不同免疫方案中的T和B细胞反应:叙事性审查
Eva Piano Mortari1, Francesca Ferrucci2, Irini Zografaki3
1B Lymphocytes Unit, Bambino Gesù Children's Hospital, istituto di ricovero e cura a carattere scientifico (IRCCS), Rome, Italy.
Frontiers in immunology
|April 2, 2025
概括
异种疫苗接种和混合免疫能产生比同源疫苗更强大的免疫反应对抗COVID-19. 混合免疫力,从感染加上接种疫苗,提供更广泛的保护对变种和更持久的免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 传染性疾病 传染性疾病
背景情况:
- COVID-19疫苗显示出高效,但没有提供绝育免疫力,允许再次感染.
- 了解各种免疫策略对于优化对SARS-CoV-2的保护至关重要.
研究的目的:
- 审查和比较来自COVID-19的同源,异源和混合免疫策略的免疫反应.
- 检查不同疫苗平台和组合对免疫记忆和抗体耐久性的影响.
主要方法:
- 关于COVID-19疫苗免疫性现有文献的审查.
- 在疫苗注射策略中对免疫反应 (抗体标位,B细胞,T细胞激活) 的比较分析.
- 对SARS-CoV-2变种引起关注的免疫反应的评估.
主要成果:
- 与基于腺病毒的疫苗相比,mRNA疫苗通常会诱导更高和更持久的中和抗体和记忆B细胞.
- 异种疫苗接种 (例如,病毒载体接着mRNA) 可能比同源方案产生更平衡的幽默和细胞反应.
- 混合免疫 (感染+接种疫苗) 引发显著更强大和更广泛的免疫反应,包括加强对变种的中和.
结论:
- 异种疫苗接种和混合免疫提供了增强COVID-19保护和免疫耐久性的有希望的策略.
- 混合免疫提供了更广泛的抗体谱,有效地对抗令人担忧的变体.
- 需要进行进一步的研究,以最终比较同源和异源疫苗接种方案之间的长期临床结果 (死亡率,严重疾病).
相关概念视频
01:36Humoral Immune Responses
70.9K
Overview
70.9K
01:51Vaccinations
43.1K
Overview
43.1K
01:20Special Features of Adaptive Immunity
667
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
667
01:23Cells of the Adaptive Immune Response
694
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...
694
01:24B Cell Activation and Differentiation
1.3K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
1.3K
01:23Immunological Memory
473
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
473