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Related Concept Videos

Adhesion01:14

Adhesion

Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow glass...

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Related Experiment Video

Updated: May 29, 2026

Dissection of Organizer and Animal Pole Explants from Xenopus laevis Embryos and Assembly of a Cell Adhesion Assay
14:21

Dissection of Organizer and Animal Pole Explants from Xenopus laevis Embryos and Assembly of a Cell Adhesion Assay

Published on: April 29, 2007

A biological breadboard platform for cell adhesion and detachment studies.

Sang-Hee Yoon1, Jiyoung Chang, Liwei Lin

  • 1Molecular Cell Biomechanics Laboratory, Department of Bioengineering, University of California, Berkeley, California 94720, USA.

Lab on a Chip
|August 30, 2011
PubMed
Summary

The BBB platform allows for precise control of cell adhesion and detachment. It uses gold electrodes modified with RTT and PEG to create distinct regions. Cell adhesion is managed through steric repulsion from PEG chains. Detachment is triggered by reductive desorption at specific voltages. The platform was tested with NIH 3T3 fibroblasts to confirm its effectiveness. This device provides a new method for studying cellular dynamics. The BBB's design supports repeatable and multifunctional experiments. It represents a significant advancement in cell adhesion research.

Keywords:
cell adhesion platformsurface modification techniquescell detachment mechanismsbiomedical engineering devices

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Microfabricated Platforms for Mechanically Dynamic Cell Culture
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Microfabricated Platforms for Mechanically Dynamic Cell Culture

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Last Updated: May 29, 2026

Dissection of Organizer and Animal Pole Explants from Xenopus laevis Embryos and Assembly of a Cell Adhesion Assay
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Using Cell-substrate Impedance and Live Cell Imaging to Measure Real-time Changes in Cellular Adhesion and De-adhesion Induced by Matrix Modification
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Microfabricated Platforms for Mechanically Dynamic Cell Culture
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Microfabricated Platforms for Mechanically Dynamic Cell Culture

Published on: December 26, 2010

Area of Science:

  • Cell adhesion dynamics in biomedical engineering
  • Surface modification techniques in materials science

Background:

Understanding cell adhesion and detachment is essential for studying physiological and pathological processes. Prior research has shown that these dynamics are complex and not fully understood. Established methods lack precise control over adhesion and detachment at subcellular levels. No prior work had resolved the need for a reusable platform to manipulate these processes. This gap motivated the development of a new device for spatiotemporal control. The BBB aims to address this limitation by enabling localized manipulation. Existing platforms do not allow for repeated use or multifunctionality. The BBB introduces a novel approach to study cell behavior in controlled environments.

Purpose Of The Study:

The aim of this work is to develop a platform for spatiotemporal manipulation of cell adhesion and detachment. This device is intended to improve understanding of cellular dynamics in controlled settings. The BBB allows for precise control at both cellular and subcellular levels. The study focuses on creating a reusable system for cell adhesion studies. The BBB combines surface modification with electrical control to achieve this. Experimental validation was needed to demonstrate the platform's effectiveness. NIH 3T3 fibroblasts were used to test the device's functionality. This approach addresses limitations in current cell adhesion research methods.

Main Methods:

The BBB platform uses gold electrodes patterned on a Pyrex substrate. Surface modification involves RTT and PEG to create distinct regions. RTT provides cell adhesion on gold electrodes while PEG resists cell attachment. Steric repulsion from PEG chains controls adhesion dynamics on the substrate. Cell detachment is managed through reductive desorption of a gold-thiol SAM. Activation potentials between -0.90 and -1.65 V trigger this process. NIH 3T3 fibroblasts were used to test the platform's functionality. Experimental characterization confirmed the BBB's ability to manipulate cell behavior.

Main Results:

The BBB successfully achieved spatial control of cell adhesion and detachment. RTT-modified gold electrodes supported cell adhesion while PEG-modified areas resisted it. Cell detachment occurred at activation potentials of -0.90 to -1.65 V. The reductive desorption of the gold-thiol SAM enabled controlled detachment. Experimental results showed consistent adhesion and detachment responses. NIH 3T3 fibroblasts demonstrated the platform's effectiveness. The BBB's surface modification provided stable and repeatable results. This platform offers a new method for studying cellular dynamics in controlled environments.

Conclusions:

The BBB platform provides spatiotemporal control of cell adhesion and detachment. The device's surface modification allows for distinct adhesion and resistance regions. Reductive desorption at specific potentials enables controlled detachment. Experimental validation with NIH 3T3 fibroblasts confirmed the platform's utility. The BBB's multifunctionality and reusability represent a significant advancement. This approach may improve understanding of cellular dynamics in controlled settings. The BBB's design supports future studies on cell adhesion mechanisms. This device demonstrates a novel method for manipulating cell behavior.

The BBB uses RTT-modified gold electrodes for cell adhesion and PEG for resistance. Cell detachment is controlled by reductive desorption at -0.90 to -1.65 V.

Gold electrodes are patterned on a Pyrex substrate and modified with RTT and PEG. This creates distinct adhesion and resistance regions on the surface.

Reductive desorption of the gold-thiol SAM occurs at -0.90 to -1.65 V. This enables controlled detachment of cells from the modified surface.

PEG creates a cell-resistive surface on the Pyrex substrate. It provides steric repulsion to prevent cell adhesion in specific regions.

NIH 3T3 fibroblasts were used in experiments. The device's ability to control adhesion and detachment was validated through these tests.

The BBB offers spatiotemporal control for studying cellular dynamics. It may improve understanding of adhesion and detachment in controlled environments.