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Updated: Jul 9, 2026

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
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A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells

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Live cells-based cytotoxic sensorchip fabricated in a microfluidic system.

Ken-Ichi Wada1, Akiyoshi Taniguchi, Jun Kobayashi

  • 1Cell-Sensing Group, Biomaterials Center, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan.

Biotechnology and Bioengineering
|December 15, 2007
PubMed
Summary
This summary is machine-generated.

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This study presents a novel live cell sensorchip within microfluidic channels for detecting cytotoxic agents. The system utilizes a green fluorescence protein sensor cell line, offering a sensitive and high-throughput method for quantitative analysis.

Area of Science:

  • Biotechnology and Bioengineering
  • Cell-based Assays
  • Microfluidics

Background:

  • Cytotoxic reagent detection is crucial for toxicology, environmental monitoring, and drug screening.
  • Existing methods may lack sensitivity, speed, or high-throughput capabilities.
  • Microfluidic systems offer precise control over cellular environments and reagent delivery.

Purpose of the Study:

  • To develop a live cell-based sensorchip integrated into microfluidic channels.
  • To establish a quantitative and sensitive detection system for cytotoxic reagents.
  • To explore the potential for high-throughput analysis using this novel platform.

Main Methods:

  • Fabrication of a microfluidic device enabling laminar flow conditions.
  • Development of a cytotoxic sensor cell line expressing green fluorescence protein (GFP) under the HSP70B' promoter.

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  • Dose-dependent fluorescence measurement in response to cadmium chloride (CdCl2) exposure within microfluidic channels.

    • Main Results:

    • Successful achievement of laminar flow within the microfluidic channels.
    • Demonstrated induction of GFP fluorescence in sensor cells in a CdCl2 dose-dependent manner.
    • Quantitative detection of cytotoxic reagents with high sensitivity and speed.

    Conclusions:

    • The developed live cell-based sensorchip in microfluidic channels provides a robust platform for quantitative cytotoxic agent detection.
    • This integrated system offers a rapid, sensitive, and high-throughput approach applicable to various fields.
    • The combination of sensor cells and microfluidics is a significant step towards advancing micro-total analysis systems (micro-TAS) technology.