mRNA疫苗诱导对SARS-CoV-2和令人担忧的变种的持久免疫记忆
Rishi R Goel1,2, Mark M Painter1,2, Sokratis A Apostolidis1,2,3
1Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
针对严重急性呼吸综合征冠状病毒2 (SARS-CoV-2) 的信使RNA (mRNA) 疫苗可以建立持久的免疫记忆. 细胞免疫,包括记忆B细胞和T细胞,在接种疫苗后至少持续六个月.
科学领域:
- 免疫学
- 病毒学
- 疫苗学
背景情况:
- 在重症急性呼吸综合征冠状病毒2 (SARS-CoV-2) 传递 RNA (mRNA) 疫苗接种后,免疫记忆的长期持久性尚未完全理解.
- 了解免疫记忆对于评估疫苗对SARS-CoV-2及其变种的有效性和持续时间至关重要.
研究的目的:
- 在 SARS-CoV-2 mRNA 疫苗接种后的 6 个月内对免疫记忆的持续性和功能进行纵向评估.
- 为了比较 SARS-CoV-2 之前未感染的个体与之前感染的个体的免疫反应.
主要方法:
- 疫苗反应的纵向分析,包括抗体水平,记忆B细胞,CD4+和CD8+T细胞.
- 对抗SARS-CoV-2变种 (阿尔法,贝塔,三角形) 的免疫细胞交叉结合活性的评估.
主要成果:
- 疫苗接种后的抗体水平下降,但在6个月内仍可检测.
- 功能性记忆B细胞从3个月增加到6个月,并与主要的SARS-CoV-2变体交叉结合.
- 诱导了抗原特异性CD4+和CD8+T细胞,早期的CD4+反应与持续的幽默免疫相关.
结论:
- SARS-CoV-2 mRNA 疫苗注射诱导了至少 6 个月的强大且持久的细胞免疫记忆,包括功能性的 B 细胞和 T 细胞反应.
- 免疫记忆显示出对关键SARS-CoV-2变种的交叉反应性.
- 预先存在的免疫调节了回忆反应,但没有显著改变抗体衰变率.
更多相关视频
07:32Evaluating the Immune Response of a Nanoemulsion Adjuvant Vaccine Against Methicillin-Resistant Staphylococcus aureus MRSA Infection
Published on: September 1, 2023
06:08Author Spotlight: A Pseudotype Virus System for Assessing Omicron Subvariants and Neutralizing Antibodies in SARS-CoV-2 Research
Published on: September 8, 2023
相关概念视频
Immunological Memory
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...
Vaccinations
Cells of the Adaptive Immune Response
Microorganisms in Medicine and Therapeutics
Active versus Passive Immunity
Active Immunity
Active immunity refers to the resistance one develops...
Cancer Vaccines
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
