一个针对HLA-E的TCR双特异性分子重定向T细胞对抗Mycobacterium tuberculosis的免疫力
Rachel L Paterson1, Marco P La Manna2,3, Victoria Arena De Souza1
1Immunocore Ltd., Abingdon, Oxfordshire OX14 4RY, United Kingdom.
概括
这项研究引入了一种新的基于T细胞受体 (TCR) 的双特异分子,向呈现Mycobacterium结核病的HLA-E. 这种方法通过克服HLA多态性来增强T细胞对结核病的免疫力,适用于更广泛的患者群体.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 结核病研究 结核病研究
背景情况:
- 经典的HLA基因多态性限制了基于TCR的免疫疗法.
- 具有有限多态性的HLA-E是一种有吸引力的替代目标.
- 结核菌菌菌 (Mtb) 感染构成了全球卫生挑战.
研究的目的:
- 开发和表征一种基于TCR的双特异性分子,准呈现mtb衍生的HLA-E.
- 研究该分子特异性和功能的生物物理和结构基础.
- 为了证明这种分子在向Mtb感染细胞中的治疗潜力.
主要方法:
- 基于TCR的双特异分子的设计和合成.
- 分子-HLA-E-相互作用的生物物理和结构特征.
- 在体外测试中使用工程细胞系和原发MTB感染细胞.
- 评估T细胞重定向,细胞杀死和细胞内Mtb的减少.
主要成果:
- 开发了一种基于TCR的强效和选择性的双特异分子,准HLA-E/Mtb化合物.
- 该分子成功地将多克隆T细胞重定向到针对Mtb感染细胞的细胞.
- 已证明可以消除感染Mtb的细胞,并减少细胞内Mtb的生长.
- 生物物理和结构分析阐明了作用机制.
结论:
- 开发的基于TCR的双特异分子显示出对抗结核病的基于T细胞的免疫疗法有前途.
- 这种策略克服了HLA多态性,扩大了治疗适用性.
- 提供了一种新方法的原则证明,以增强宿主对Mtb.的免疫力.
更多相关视频
09:53Using X-ray Crystallography, Biophysics, and Functional Assays to Determine the Mechanisms Governing T-cell Receptor Recognition of Cancer Antigens
Published on: February 6, 2017
11.4K
08:27Detection of Human Leukocyte Antigen Biomarkers in Breast Cancer Utilizing Label-free Biosensor Technology
Published on: March 24, 2015
14.8K
相关概念视频
Cytotoxic T Cells-mediated Immune Response
903
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...
903
Targeted Cancer Therapies
7.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.6K
Tumor Immunotherapy
520
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
520
Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
T Cell Activation and Clonal Selection
714
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
714
