FASTMAP - - 一个灵活和可扩展的免疫类管道,用于基于人工抗原呈现细胞的HLA和抗原特异性T细胞表皮图映射
Luisa Weisbrod1, Luigi Capriotti2, Marco Hofmann1
1Recombinant Protein Discovery, CSL Innovation GmbH, Marburg, Germany.
Frontiers in immunology
|May 23, 2024
概括
我们开发了FASTMAP,这是一种新的方法,可以通过暂时共同表达单个人类白细胞抗原 (HLA) 和疾病抗原等位素来识别T细胞表位. 这种具有成本效益的方法可以为各种治疗应用提供快速,高通量表位图.
科学领域:
- 免疫学 免疫学 免疫学
- 蛋白质组学是指蛋白质组学.
- 生物技术是生物技术.
背景情况:
- 由MHC分子和T细胞表位体呈现的类谱对于免疫疗法,疫苗接种和评估蛋白质疗法至关重要.
- 鉴定特定的T细胞表位因人白细胞抗原 (HLA) 分子的高多形态性而具有挑战性,需要异位基因特定的映射策略.
- 自身免疫性疾病往往与特定的抗原有关,这突显了针对性表位标识的必要性.
研究的目的:
- 建立FASTMAP,一种创新的策略,用于在人类细胞系中暂时共同表达单个HLA基因和疾病特异性抗原.
- 为了使HLA结合的识别使用液体染色学-并联质谱法 (LC-MS/MS).
- 为高吞吐量T细胞表皮质发现提供一个具有成本效益,快速和可定制的系统.
主要方法:
- FASTMAP策略涉及单个HLA等位体和疾病特异性抗原的短暂共传染到人类细胞系中.
- 使用液体染色学-双重质谱法 (LC-MS/MS) 来识别与HLA结合的.
- 使用众所周知的人类模型抗原 (例如,因子VIII,乙胆受体亚单元α,SARS-CoV-2蛋白质,髓基蛋白) 与特定的HLA基因组结合的验证.
主要成果:
- FASTMAP确定了由常见的HLA等位基呈现的内源性的谱,与之前描述的相似.
- 使用模型抗原对准已发表的和in silico预测的T细胞表位物对特定的HLA/抗原组合进行类鉴定.
- 这项研究表明,FASTMAP在识别潜在的T细胞表位上取得了成功.
结论:
- FASTMAP提供了一种强大而可适应的管道,用于识别内源性处理的MHC结合和潜在的T细胞表位.
- 该方法具有成本效益,快速,适合高通量分析,促进基于表位的治疗开发.
- 单个HLA等位基因与特定抗原的短暂共同表达提供了一个可定制的系统,用于个性化免疫组分析.
相关概念视频
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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.
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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.
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