Related Experiment Video
Updated: Jul 15, 2026
11:23
A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression
Published on: October 6, 2019
A biological sensor platform using a pneumatic-valve controlled microfluidic device containing Tetrahymena pyriformis
Seong-Won Nam1, Danny Van Noort, Yoonsun Yang
1Division of Nano Sciences (BK21 program), Ewha Womans University, Daehyundong, Seodaemun-gu, Seoul, 120-750, Korea.
Lab on a Chip
|May 4, 2007
Summary
This study developed a microfluidic device to measure ciliate chemotaxis, revealing enhanced sensitivity to chemoeffectors and the role of NMDA receptors in signal perception.
Area of Science:
- Biophysics
- Cell Biology
- Microfluidics
Background:
- Chemotaxis is crucial for single-celled organisms.
- Quantifying chemotactic responses in ciliates requires sensitive assays.
Purpose of the Study:
- To develop a microfluidic device for precise quantification of Tetrahymena pyriformis chemotaxis.
- To investigate the role of specific receptors in ciliate chemoeffector perception.
Main Methods:
- Fabrication of a poly(dimethylsiloxane) (PDMS) microfluidic device using multi-layer soft lithography.
- Generation of linear chemoeffector gradients within microchambers.
- Quantification of ciliate movement towards or away from chemoeffectors.
Main Results:
- Demonstrated a 10^5-fold increase in sensitivity to chemoeffectors like glycine-proline.
- Identified the NMDA (N-methyl-d-aspartate) receptor's critical role in chemoeffector perception.
- Linked Ca2+ channels to ciliate motility.
Conclusions:
- The microfluidic chemotaxis assay system offers high sensitivity for studying ciliate behavior.
- Provides insights into the signal transduction mechanisms and receptor functions in Tetrahymena pyriformis.
