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Related Experiment Videos

Novel multi-depth microfluidic chip for single cell analysis.

Sun Yue1, Yin Xue-Feng

  • 1Institute of Microanalytical Systems, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.

Journal of Chromatography. A
|April 20, 2006
PubMed
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A novel microfluidic chip enables precise single human carcinoma cell analysis. This technology improves cell lysis and electrophoresis, offering faster, more reproducible results for intracellular component detection.

Area of Science:

  • Microfluidics
  • Cell Biology
  • Analytical Chemistry

Background:

  • Human carcinoma cells present challenges in microfluidic devices due to aggregation and adhesion.
  • Efficient cell lysis and reproducible electrophoretic separation are critical for intracellular analysis.

Purpose of the Study:

  • To develop a novel multi-depth microfluidic chip for precise handling and analysis of single human carcinoma cells.
  • To improve the speed and reproducibility of chip-based electrophoresis for intracellular components.

Main Methods:

  • Fabrication of a multi-depth microfluidic chip using lithography and etching.
  • Utilizing hydrostatic pressure and pinching potentials for cell manipulation and loading.
  • On-chip cell lysis with sodium dodecyl sulfate (SDS) and subsequent electrophoresis.

Related Experiment Videos

  • Detection of intracellular components (reduced glutathione and reactive oxygen species) using laser-induced fluorescence (LIF).

    • Main Results:

    • The microfluidic chip successfully manipulated and positioned single carcinoma cells using a weir.
    • Rapid cell lysis (20s) and improved reproducibility in chip-based electrophoresis were achieved.
    • High throughput (15 samples/h) and precise separation of reduced glutathione (GSH) and reactive oxygen species (ROS) were demonstrated.

    Conclusions:

    • The developed multi-depth microfluidic chip offers a robust platform for single-cell analysis.
    • This approach enhances the efficiency and reliability of intracellular component separation and detection.
    • The technology shows promise for advancing cancer cell diagnostics and research.