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相关概念视频

Proteomics01:33

Proteomics

7.2K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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相关实验视频

Updated: Jun 2, 2025

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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针对无标签的单个voxel蛋白质组的强大的收集和处理.

Reta Birhanu Kitata1, Marija Velickovic2, Zhangyang Xu1

  • 1Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.

Nature communications
|January 13, 2025
PubMed
概括

一种名为"表面活性剂辅助单声素处理" (wcSOP) 的新方法可以实现强大的单声素蛋白质组. 该技术允许组织微环境的详细空间蛋白质组映射,揭示特定区域的蛋白质特征.

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科学领域:

  • 蛋白质组学是指蛋白质组学.
  • 生物技术是生物技术.
  • 组织微环境分析分析

背景情况:

  • 大量组织蛋白质组缺乏空间分辨率,掩盖了细胞异质性.
  • 绘制组织微环境的地图需要具有高空间分辨率的方法.

研究的目的:

  • 开发一种强大的方法,用于无标签的单个voxel蛋白质组.
  • 为了实现组织微环境的空间蛋白质组映射.

主要方法:

  • 单个微尺度组织 voxels 的综合湿收集.
  • 表面活性剂辅助的一子声音处理 (wcSOP) 方法.
  • 激光捕捉微解剖 (LCM) 用于声素隔离.

主要成果:

  • 从20μm voxels (~1个细胞区域) 中对~900个蛋白质进行可复制量化.
  • 从200μm voxels (~100 个细胞区域) 中量化 ~4600 种蛋白质.
  • 已被证明适用于新鲜冷,OCT嵌入和FFPE人体组织.

结论:

  • wcSOP可以实现强大的,无标签的单个voxel蛋白质组.
  • 该方法揭示了空间分辨的蛋白质签名和信号通路.
  • wcSOP-MS促进了常规的空间蛋白质组学和组织微环境分析.