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Related Concept Videos

Flow Cytometry01:23

Flow Cytometry

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The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
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Sample Preparation for Mass Cytometry Analysis
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Single-Cell/Particle Sample Introduction Device for Mass Cytometry Based on Gas-Driven Flow Focusing.

Huaiyi Chen1,2, Jinhui Liu3, Yu Zhao4

  • 1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.

Analytical Chemistry
|February 17, 2025
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Summary

A new device for mass cytometry analysis prevents clogging using a gas-driven flow focusing protocol. This plug-and-play system ensures smooth sample introduction for long-term single-cell analysis without compromising detection performance.

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Area of Science:

  • Biotechnology
  • Analytical Chemistry
  • Single-cell analysis

Background:

  • Mass cytometry offers advanced multi-marker analysis but suffers from sample introduction issues like clogging.
  • Conventional nebulizers in mass cytometry systems are prone to clogging, hindering long-term sample analysis.

Purpose of the Study:

  • To develop a novel, clog-free sample introduction device for mass cytometry.
  • To improve the reliability and ease of use of mass cytometry systems for single-cell and single-particle analysis.

Main Methods:

  • Developed a plug-and-play device utilizing a gas-driven flow focusing protocol with a virtual hole.
  • Achieved single-cell monodispersion via liquid jet breakup, bypassing conventional nebulization.
  • Employed high-speed microscopy to study liquid jet dynamics and used inductively coupled plasma mass spectrometry for validation.

Main Results:

  • The developed device successfully generated single-cell monodispersion without clogging.
  • Comparative analysis showed consistent results between the new device and conventional nebulizers.
  • The device demonstrated high universality and compatibility with mass cytometry and ICP-MS instruments.

Conclusions:

  • The novel flow focusing device provides a reliable, clog-free solution for mass cytometry sample introduction.
  • This innovation enhances the practicality of long-term, high-throughput single-cell analysis.
  • The device maintains analytical performance while significantly reducing operational challenges.