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Related Experiment Video

Updated: Jun 1, 2025

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
15:41

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells

Published on: October 15, 2013

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Enhanced sensitivity and scalability with a Chip-Tip workflow enables deep single-cell proteomics.

Zilu Ye1,2, Pierre Sabatier3,4, Leander van der Hoeven3

  • 1State Key Laboratory of Common Mechanism Research for Major Diseases, Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China. yzl@ism.pumc.edu.cn.

Nature Methods
|January 17, 2025
PubMed
Summary

A new high-sensitivity single-cell proteomics (SCP) workflow, Chip-Tip, identifies over 5,000 proteins and post-translational modifications in single cells. This breakthrough enables high-throughput analysis for identifying cell-specific markers and therapeutic targets.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Proteomics

Background:

  • Single-cell proteomics (SCP) offers deep insights into cellular heterogeneity.
  • Existing SCP methods face limitations in sensitivity and throughput.

Purpose of the Study:

  • To develop a high-sensitivity and high-throughput SCP workflow.
  • To enable direct detection of post-translational modifications at the single-cell level.
  • To refine SCP analysis for complex biological samples like cancer spheroids.

Main Methods:

  • Development of the Chip-Tip workflow for high-sensitivity SCP.
  • Optimization of a tissue dissociation buffer for single-cell disaggregation.
  • Application of the workflow to analyze human-induced pluripotent stem cell differentiation.

Main Results:

  • Identification of >5,000 proteins in individual HeLa cells.
  • Direct detection of post-translational modifications in single cells.
  • Quantification of stem cell and lineage markers during differentiation.
  • Demonstrated throughput of up to 120 label-free SCP samples per day.

Conclusions:

  • The Chip-Tip workflow establishes a new benchmark for SCP sensitivity and throughput.
  • This method facilitates the identification of cell type-specific markers and therapeutic targets.
  • SCP has broad applications in basic biology and biomedicine.