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Assay of Adhesion Under Shear Stress for the Study of T Lymphocyte-Adhesion Molecule Interactions

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Published on: June 29, 2016

Light-Controlled Promiscuous Cell Adhesion through the Plasma Membrane-Binding Protein BcLOV4.

Nivedha Veerasubramanian¹, Anne Aalto², Seraphine V Wegner¹

¹Institute for Physiological Chemistry and Pathobiochemistry, University of Münster, Münster 48149, Germany.

Bioconjugate Chemistry

|September 22, 2025

Summary

This summary is machine-generated.

Engineered a synthetic cell adhesion molecule (BcLOV4-PM) for light-controlled cell binding. This innovation enables tissue engineering applications without modifying all cell types involved.

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Area of Science:

Cell Biology
Biotechnology
Biophysics

Background:

Dynamic regulation of cell-cell adhesion is crucial for biological processes and tissue engineering.
Current optogenetic methods for controlling cell adhesion often necessitate genetic modification of all participating cell types.
A need exists for versatile tools that enable precise, cell-type-agnostic control over cell adhesion.

Purpose of the Study:

To engineer a novel, single-component synthetic cell adhesion molecule for light-dependent cell-cell interactions.
To demonstrate the ability of this molecule to mediate both homotypic and heterotypic cell adhesions.
To showcase its utility in light-controlled tissue engineering applications, such as spheroid compaction.

Main Methods:

Engineered a synthetic cell adhesion molecule (BcLOV4-PM) by fusing a blue-light-responsive protein (BcLOV4) with a transmembrane domain.
Utilized blue light to induce cell-cell adhesions mediated by BcLOV4-PM.
Employed temperature changes (37 °C) to disrupt the light-induced adhesions, leveraging BcLOV4's thermosensitivity.
Demonstrated light-controlled spheroid compaction in both monocultures and cocultures with unmodified wild-type cells.

Main Results:

BcLOV4-PM cells formed light-dependent homotypic and heterotypic adhesions with unmodified wild-type cells.
Adhesions were induced by blue light and could be disrupted by elevated temperature (37 °C), but not by darkness.
Demonstrated successful light-controlled compaction of spheroids using BcLOV4-PM in mixed cell populations.
The engineered molecule facilitated promiscuous and modular control over cell-cell adhesion.

Conclusions:

BcLOV4-PM provides a versatile, single-component solution for light-dependent cell-cell adhesion control.
This system enables cell adhesion modulation without requiring genetic modification of all interacting cell types.
Offers significant potential for advanced applications in tissue engineering and the study of multicellular systems.