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TrueGel3D Hydrogel Kits

SLO-DEXTRAN, allow cell recovery, PEG non cell-degradable crosslinker




TRUE6-1KT contains SLO-DEXTRAN solution in phosphate buffer and lyophilized PEG non cell-degradable crosslinker with reconstitution buffer and water.


TRUE6-1KT is used to generate hydrogels of different stiffness (0.15 to 5 KPa shear modulus) to mimic natural tissue stiffness and to investigate the effect of mechanical stimulus on cell physiology and behavior. It is also used to culture non-proliferating cells and proliferating spheroids that do not attach to hydrogel for survival, but rather use their own extracellular matrix.


Avoid prolong exposure of PEG non cell-degradable crosslinker to air.

Features and Benefits

• Slow gelling (takes 8 minutes to 25 minutes, depends on gel stiffness)
• Flexibility in modulating gel stiffness
• Does not allow cell migration
• Allow cell recovery and post-culture analyses
• Cell inert hydrogel (if not customized with RGD peptide)

General description

The gel is formed by stable thioether bonds between thiol groups on PEG non cell-degradable crosslinker and thio-reactive groups on SLO-DEXTRAN. The polymer, SLO-DEXTRAN is functionalized with thiol-reactive groups which react with crosslinker at slower rate than maleimides in FAST-DEXTRAN. SLO-DEXTRAN does not have sites for cell attachment, but it can be customized to conjugate RGD peptide using TrueGel3D RGD peptide (TRUERGD-1EA) prior to the crosslinking step.

TrueGel3D enzymatic cell recovery solution (TRUEENZ-500UL) is used to dissolve dextran polymers for easy recovery of chemically fixed or live cells for post-culture analyses including RT-PCR, western blots and other molecular biological studies.

Safety & Documentation

Safety Information

NONH for all modes of transport
Protocols & Articles


Hydrogels for 3D cell culture

Cells in their natural environment are surrounded by a complex network of extracellular molecules called Extracellular Matrix (ECM). This network provides structure and function, in the form of bioch...
Keywords: Adhesion, Cancer, Cell culture, Growth factors

True Gel3D™ Troubleshooting guide

From our library of Articles, Sigma-Aldrich presents True Gel3D™ Troubleshooting guide
Keywords: Adhesion

TrueGel3D™ Hydrogel for 3D Cell Culture

TrueGel3D™ is a biochemically defined hydrogel formed by mixing polymers with crosslinkers. Compared to other hydrogels based on a biological extract from animal cells (e.g. mouse EHS tumor cells), T...
Keywords: Adhesion, Buffers, Cancer, Cell culture, Growth factors, Immobilization, Immunostaining, Ligands, Microscopy, PAGE, SDS PAGE


Advanced Protocol: How to Customize your TrueGel3D™ Hydrogel

The identity and concentration of peptides or proteins can be varied when constructing a TrueGel 3D™ hydrogel. This peptide concentration optimization may be important for specific applications such ...
Keywords: Adhesion, High performance liquid chromatography, Ligands, Oxidations

TrueGel3D™ Slow Gelling Hydrogels Preparation Protocol

TrueGel3D™ is a chemically-defined hydrogel formed by mixing polymers with crosslinkers. This hydrogel enables the encapsulation of cells to enable their growth in a 3-dimensional environment that be...
Keywords: Adhesion, Buffers, Cell attachment, Cell culture, Crystallization, Oxidations

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