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相关概念视频

Proteomics01:33

Proteomics

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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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Subcellular Fractionation01:32

Subcellular Fractionation

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The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
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Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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相关实验视频

Updated: Jun 30, 2025

Single-Cell Proteomics Preparation for Mass Spectrometry Analysis Using Freeze-Heat Lysis and an Isobaric Carrier
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Single-Cell Proteomics Preparation for Mass Spectrometry Analysis Using Freeze-Heat Lysis and an Isobaric Carrier

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蛋白质形式的单细胞分析.

Pei Su1, Michael A R Hollas1, Fatma Ayaloglu Butun2

  • 1Departments of Molecular Biosciences, Chemistry, Chemical and Biological Engineering, and Feinberg School of Medicine, Northwestern University, Evanston, Illinois 60208, United States.

Journal of proteome research
|March 18, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了单细胞蛋白质成像质谱仪 (scPiMS) 以实现可扩展的单细胞蛋白质组学. 这种方法通过直接分析单细胞的完整蛋白质来提高吞吐量和蛋白质覆盖率.

关键词:
个体离子质谱学 个体离子质谱学质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量这是一个纳米-DESII.蛋白质形状的分配得分得分.一个单细胞的单细胞.顶向下的蛋白质组学

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科学领域:

  • 蛋白质组学是指蛋白质组学.
  • 质谱测量质量谱测量
  • 细胞生物学 细胞生物学

背景情况:

  • 单细胞蛋白质组学对于理解细胞异质性至关重要.
  • 目前的方法面临着吞吐量限制,阻碍了大规模分析.

研究的目的:

  • 为高通量单细胞蛋白质组学引入一个新的平台.
  • 为了能够在单细胞内直接分析完整的蛋白质及其蛋白质形式.

主要方法:

  • 开发了单细胞蛋白质成像质谱仪 (scPiMS).
  • 利用直接的溶剂提取和从单细胞中检测完整蛋白质的MS.
  • 用于将单个细胞滴在玻璃片上进行样品制备.

主要成果:

  • 通过完整的蛋白形状分析实现了可扩展的单细胞蛋白质组学.
  • 显著提升了细胞处理速度的几倍.
  • 与现有方法相比,蛋白质组成覆盖率增加.

结论:

  • scPiMS解决了单细胞蛋白质组学中的吞吐量瓶问题.
  • 该平台可以在单细胞水平上进行高效和全面的蛋白形状分析.
  • scPiMS为推进单细胞蛋白质组学研究提供了一个可扩展的解决方案.