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Updated: Mar 13, 2026

A Gradient-generating Microfluidic Device for Cell Biology

A Gradient-generating Microfluidic Device for Cell Biology

Published on: August 30, 2007

The microfluidic lighthouse: an omnidirectional gradient generator.

A Nakajima¹, M Ishida², T Fujimori²

¹Research Center for Complex Systems Biology, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan. cssawai@mail.ecc.u-tokyo.ac.jp.

|October 14, 2016

Summary

This summary is machine-generated.

This study introduces a novel 360° microfluidic device for precise control over chemoattractant gradients, enabling new insights into cell migration and re-orientation dynamics.

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Last Updated: Mar 13, 2026

A Gradient-generating Microfluidic Device for Cell Biology

A Gradient-generating Microfluidic Device for Cell Biology

Published on: August 30, 2007

Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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Polydimethylsiloxane-polycarbonate Microfluidic Devices for Cell Migration Studies Under Perpendicular Chemical and Oxygen Gradients

Polydimethylsiloxane-polycarbonate Microfluidic Devices for Cell Migration Studies Under Perpendicular Chemical and Oxygen Gradients

Published on: February 23, 2017

Area of Science:

Cell Biology
Biophysics
Microfluidics

Background:

Chemotactic cell migration assays are crucial for understanding cell movement in response to chemical signals.
Microfluidic devices offer precise control over chemoattractant gradients, aiding in the study of chemotaxis mechanisms.
Conventional microfluidic devices are limited in studying cell re-orientation to dynamic or changing gradients.

Purpose of the Study:

To develop a versatile microfluidic device capable of generating radially symmetric chemoattractant gradients.
To enable precise control over gradient orientation, speed, and movement for studying cell migration.
To investigate cell re-orientation and steering in response to dynamic chemoattractant landscapes.

Main Methods:

Design and fabrication of a radially symmetric microfluidic device with 360° laminar flow.
Introduction of chemoattractants via central inlet or photo-uncaging.
Regulation of flow from multiple side channels to control gradient direction and speed.
Testing the device's efficacy using Dictyostelium and neutrophil-like HL60 cell migration.

Main Results:

The device successfully generated chemoattractant gradients with controllable orientation and movement.
Cell migration and re-orientation of Dictyostelium and HL60 cells were effectively steered by the dynamic gradients.
Demonstrated high freedom in positioning and orienting chemoattractant gradients.

Conclusions:

The developed radially symmetric microfluidic device offers a versatile platform for advanced chemotaxis studies.
This technology facilitates research into cell migration, re-orientation, and steering mechanisms.
Enables precise investigation of cell responses to complex and dynamic chemical environments.