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Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
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相关实验视频

Updated: Jul 3, 2025

Imaging the Human Immunological Synapse
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Tsyn-Seq:一个基于T细胞突触的抗原识别平台.

Yimei Jin1, Takahiko Miyama1, Alexandria Brown1

  • 1Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas.

Cancer immunology research
|February 16, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了T突触测序 (Tsyn-seq),这是一种用于快速识别T细胞受体 (TCR) 向抗原的新方法. 该系统成功地从子宫癌细胞系中识别了HPV16 E7抗原,帮助癌症研究.

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Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells
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科学领域:

  • 免疫学 免疫学 免疫学
  • 分子生物学分子生物学
  • 基因组学就是基因组学.

背景情况:

  • 识别T细胞受体 (TCR) 点对于理解免疫反应至关重要.
  • 目前用于全基因组抗原鉴定的现有方法并不普遍可用.

研究的目的:

  • 提出一种新的,快速的,普遍适用的方法来识别由TCRs识别的质主要基因相容复合体 (pMHC) 标.
  • 为了从cDNA库中对目标抗原进行功能查.

主要方法:

  • 开发了T突触 (Tsyn) 记者系统,使用具有NF-κB记者的抗原呈现细胞 (APC) 和具有NFAT记者的T细胞.
  • 通过双报告器活动和流量分类来丰富交互的T细胞-APC聚合物.
  • 使用深度测序 (Tsyn-seq) 进行量化抗原识别.

主要成果:

  • Tsyn-seq成功丰富了先前特征的TCR.的相关抗原 (HPV16 E7).
  • 该方法使用来自HPV16阳性宫癌细胞系的cDNA库进行了验证.
  • 证明了TCR识别抗原的快速识别.

结论:

  • Tsyn-seq提供了一种强大的新工具,用于识别TCR抗原.
  • 这种方法促进了瘤cDNA库对相关抗原的快速选.
  • 在癌症免疫学和免疫治疗研究中推进TCR抗原的发现.