What Makes a Hydrogel "Dynamic"?

Team Dynamic Matrices 

A dynamic hydrogel is one whose mechanical or biochemical properties can change after the gel has already formed, as opposed to a static hydrogel, whose properties are fixed at the moment of crosslinking and stay that way for the life of the culture.

Why the Distinction Matters Biologically

Real tissue is dynamic. Stiffness, porosity, and signaling change during development, wound healing, and disease progression, sometimes over hours and sometimes over weeks. A static hydrogel can only approximate a single snapshot of that ongoing process. A dynamic hydrogel can be triggered to soften, stiffen, or change its stress-relaxation behavior in response to a defined stimulus, allowing researchers to recreate that time-varying behavior directly in culture rather than approximating it with a series of separate static experiments.

What Triggers the Change

Common triggers include light exposure at a specific wavelength, temperature shifts, the addition of a specific molecule, or enzymatic activity already present in or added to the system. Each trigger type comes with its own tradeoffs in terms of precision, reversibility, and how disruptive the trigger itself is to the cells already in culture.

Why DyNAtrix® Is Particularly Well Suited to This

Reversible or exchangeable crosslinks, rather than permanent covalent bonds, are what give a hydrogel its dynamic behavior. DyNAtrix's crosslinking strategy achieves this naturally, since adding new crosslinkers which can reconfigure the network on demand with high sequence specificity. Compared to light-triggered or temperature-triggered systems, DyNAtrix can be highly selective for a specific reconfiguration without requiring specialized equipment like a precise light source.