Evaluation and validation of a light-responsive hydrogel for commercializing a novel biomechanical assay [GeL-Cell]

GeL‑Cell develops a biocompatible, visible light–responsive hydrogel platform capable of dynamic shape changes—both in the bulk and at the surface—to guide cell morphology, maturation, and behavior through controlled mechanical stimulation.

In living tissues, cells constantly experience mechanical cues such as stretching or compression; the absence of these cues in traditional in vitro settings reduces the physiological relevance of experimental results. GeL‑Cell addresses this gap by creating a biomimetic hydrogel with tunable mechanical properties and enhanced biocompatibility, enabling precise, light-triggered mechanical stimulation during cell culture.

The project also explores commercialization pathways, leveraging synergies with our previous research‑to‑business initiative L‑Cell, including team expertise, market insight, and business analysis. The resulting platform has strong potential in drug screening, tissue engineering, and disease modeling, where controlled mechanical signaling is essential.

Culturing and stimulating cells on soft, tunable hydrogels is highly beneficial because these materials mimic the natural extracellular matrix. This makes them suitable for drug screening, tissue engineering, and disease modeling using stem cells, neural cells, cancer cells, and other sensitive cell types.

GeL‑Cell is the only approach capable of addresing the following needs:

1. Simulation of the cyclic physio-pathological mechanical conditions of cells in human tissues.
2. Enabling productive drug discovery and safety assessment matching the process needs of high-throughput screening (HTS) pipelines.
3. Improving assay accuracy by enabling single-cell analyses with high-content screening (HCS) microscopes. 

Light‑responsive hydrogels can undergo structural and conformational changes upon irradiation. In GeL‑Cell, the hydrogel is modified with azobenzenes and cyclodextrins to create visible‑light‑responsive azo‑CD host–guest complexes. Azobenzenes switch between trans (complex‑forming) and cis (non‑complex‑forming) isomers under wavelength‑specific light, and this molecular switching alters hydrogel hydrophilicity. As a result, the material exhibits controlled swelling and shrinking patterns, generating mechanical actuation that can be used to stimulate cells in a precisely regulated manner.