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Related Experiment Video

Updated: May 1, 2026

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
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Laminar flow mediated continuous single-cell analysis on a novel poly(dimethylsiloxane) microfluidic chip.

Bin Deng1, Yu Tian1, Xu Yu2

  • 1Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.

Analytica Chimica Acta
|April 22, 2014
PubMed
Summary

A new microfluidic chip enables continuous single-cell analysis by manipulating cells in flowing streams. This cost-effective technology reveals cellular differences in drug uptake and protein expression, advancing chemical single-cell analysis.

Keywords:
DoxorubicinLaminar flowMicrofluidic chipP-glycoproteinSingle-cell analysis

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Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Cell Biology

Background:

  • Continuous single-cell analysis is crucial for understanding cellular heterogeneity.
  • Existing methods often face challenges in throughput and complexity.
  • Microfluidic devices offer potential for high-throughput, sensitive cellular analysis.

Purpose of the Study:

  • To develop a novel, cost-effective microfluidic chip for continuous single-cell analysis.
  • To optimize microfluidic channel design for efficient cell manipulation and lysis.
  • To demonstrate the chip's capability in analyzing drug uptake and protein expression in single cells.

Main Methods:

  • Designed and fabricated a microfluidic chip utilizing laminar flow for cell alignment.
  • Optimized channel geometry and micro-obstacles for cell lysis and content delivery.
  • Employed laser-induced fluorescence detection for analyzing doxorubicin (DOX) uptake and P-glycoprotein (P-gp) expression in K562 cells.

Main Results:

  • Achieved an average throughput of 6-8 cells per minute.
  • Successfully detected variations in doxorubicin uptake among individual leukemia cells.
  • Quantified differences in surface P-glycoprotein expression within the K562 cell population.

Conclusions:

  • The developed microfluidic chip offers a simple, low-cost, and effective platform for continuous chemical single-cell analysis.
  • The technology demonstrates feasibility for studying cellular heterogeneity in drug response and biomarker expression.
  • This approach holds promise for advancing personalized medicine and drug discovery.