Related Experiment Video
Updated: Jun 10, 2026
09:09
A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions
Published on: November 23, 2015
Single-cell detection using a thin film transistor photosensor with micro-partitions
Tsuyoshi Tanaka1, Yoshihiko Sunaga, Keiichi Hatakeyama
1Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan.
Lab on a Chip
|August 10, 2010
Summary
This study introduces a novel thin film transistor (TFT) photosensor for single-cell detection using chemiluminescence. The system enables high-throughput, real-time analysis of over 10,000 cells with minimal optical setup.
Area of Science:
- Biomedical Engineering
- Microfluidics
- Biosensing Technology
Background:
- Single-cell analysis is crucial for understanding cellular heterogeneity and function.
- Existing methods for single-cell detection often require complex instrumentation and lack real-time capabilities.
- Chemiluminescence offers a sensitive detection method for biological molecules.
Purpose of the Study:
- To develop a novel thin film transistor (TFT) photosensor integrated with micro-partitions for efficient single-cell entrapment and chemiluminescence-based detection.
- To demonstrate the system's capability for real-time monitoring of individual cells.
- To establish a high-throughput platform for analyzing large cell populations.
Main Methods:
- Fabrication of micro-partitions on a TFT photosensor surface using photolithography to create 30 μm × 30 μm pixel areas.
- Integration of the micro-partitioned TFT photosensor into a microfluidic chamber.
- Staining of Jurkat (JM) cells with primary and Horseradish peroxidase (HRP)-labeled secondary antibodies for chemiluminescence detection.
- Visualization and real-time monitoring of single JM cells as bright pixels on the TFT sensor.
Main Results:
- Successful entrapment and visualization of individual JM cells on the TFT photosensor pixels.
- Demonstration of chemiluminescence-based detection of single cells via HRP labeling.
- Achieved real-time monitoring of HRP-labeled JM cells.
- The micro-partitioned TFT photosensor system enables highly efficient single-cell detection.
Conclusions:
- This work presents the first report of single-cell entrapment and signal detection directly on the photosensing area of individual TFT pixels.
- The developed system facilitates high-throughput (over 10^4 cells) and real-time analysis with minimal optical requirements.
- This technology holds significant potential for advancing single-cell analysis in various biological and medical applications.
