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相关概念视频

Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

476
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
476
Antigen Processing Pathways01:31

Antigen Processing Pathways

960
MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
960

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相关实验视频

Updated: Jun 15, 2025

A High Throughput MHC II Binding Assay for Quantitative Analysis of Peptide Epitopes
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使用多样性MHC I结合系统准基抗原.

Haotian Du1, Leena Mallik2,3, Daniel Hwang2,3

  • 1Department of Chemistry, Stanford University, Stanford, CA, USA.

Nature biotechnology
|December 13, 2024
PubMed
概括

一个新的平台,TRACeR-I,能够精确地准MHC I分子上的,克服T细胞受体交叉反应,开发新疗法.

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Immunopeptidomics: Isolation of Mouse and Human MHC Class I- and II-Associated Peptides for Mass Spectrometry Analysis
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Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation
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科学领域:

  • 免疫学 免疫学 免疫学
  • 结构生物学 结构生物学
  • 药物发现 药物发现 药物发现

背景情况:

  • 由于T细胞受体 (TCR) 交叉反应性,开发针对MHC I类 (MHC I) 蛋白质呈现的特定的向疗法具有挑战性.
  • 现有的方法与人类白细胞抗原 (HLA) 全型的多态性质作斗争.

研究的目的:

  • 引入一个可通用的平台,TRACeR-I,用于针对多态HLA-A*,HLA-B*和HLA-C*全型的.
  • 为了克服TCRs在MHC I向应用中的交叉活性限制.

主要方法:

  • 针对MHC I (TRACeR-I) 平台的抗原-MHC复合体记者有针对性的识别的开发.
  • 对TRACeR-MHC I的联合结晶以阐明其抗原识别机制.
  • 快速查TRACeR-I对疾病相关的HLA和来自病毒和蛋白的.

主要成果:

  • TRACeR-I显示了整个长度的广泛接触,赋予了单一残留的特异性.
  • 针对各种HLA全型呈现的病毒和蛋白衍生的小组进行了成功的查.
  • 基于TRACeR的双特异性T细胞诱导剂和CAR T细胞在杀瘤细胞时显示出高效率 (低纳米范围).

结论:

  • 该TRACeR-I平台提供了一个可通用的解决方案,用于向由MHC I分子呈现的.
  • 这项技术克服了TCR交叉反应,使研究,诊断和治疗的精确准成为可能.
  • TRACeR-I使得广泛适用的MHC I向分子的开发成为可能.