基于STING激动剂的ER向分子促进抗原交叉呈现
Xiafeng Wang1,2, Zhangping Huang2, Lixiao Xing3
1Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
研究人员开发了基于STING激动剂的ER向分子 (SABER),以增强CD8+T细胞的反应. 这种新型的输送系统向细胞内膜网,提高了疫苗对瘤和感染的疗效.
科学领域:
- 免疫学
- 疫苗学
- 分子生物学
背景情况:
- CD8+ T细胞的反应对抗感染和瘤至关重要.
- 树突细胞内细胞 (ER) 中的抗原交叉呈现是 CD8+ T 细胞诱导的关键.
- 目前的抗原输送方法缺乏亚细胞精度,特别是细胞质到ER通路.
研究的目的:
- 开发一种针对抗原的新型ER传递系统.
- 通过精确的亚细胞传递来增强CD8+ T细胞免疫反应.
- 调查开发系统的辅助性质.
主要方法:
- 开发基于STING激动剂的ER向分子 (SABER).
- SABER与各种抗原 (瘤新抗原,病毒表位) 的结合.
- 在临床前模型中评估CD8+T细胞诱导和免疫反应.
- 在SARS-CoV-2亚单元疫苗模型中评估SABER的辅助作用.
主要成果:
- SABER有效地将抗原输送到急诊室, 形成微反应器.
- 与SABER的结合显著增强了CD8+ T细胞对瘤和病毒抗原的反应.
- 与传统辅助剂或抗原/激动剂混合物相比,SABER的疗效更高.
- SABER 作为一种强有力的辅助剂,可以改善SARS-CoV-2 疫苗中和抗体反应.
结论:
- SABER是一个高亲和度的ER向输送系统和疫苗辅助剂.
- 精确的亚细胞传递到ER的交叉呈现机制使疫苗设计取得了重大进展.
- 这种方法在诱导强大的CD8+T细胞介导免疫力方面提供了定性飞跃.
更多相关视频
10:35Chemical Conjugation of a Purified DEC-205-Directed Antibody with Full-Length Protein for Targeting Mouse Dendritic Cells In Vitro and In Vivo
Published on: February 5, 2021
12:48Purification of the Membrane Compartment for Endoplasmic Reticulum-associated Degradation of Exogenous Antigens in Cross-presentation
Published on: August 21, 2017
相关概念视频
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and...
Cross-reactivity
Antigen Processing Pathways
MHC Class I: Presenting Endogenous...
Tumor Immunotherapy
Antigen Presenting Cells
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
