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TRUE5 Sigma-Aldrich

TrueGel3D Hydrogel Kits

FAST-PVA, PEG non cell-degradable crosslinker




TRUE5-1KT contains FAST-PVA (polymer) in solution in phosphate buffer and lyophilized PEG non cell-degradable crosslinker with reconstitution buffer, TrueGel3D thioglycerol and water.


TRUE5-1KT is preferred over dextran-based gels for long-term culture of cells which producing carbohydrate degrading enzymes. It is used to culture spheroids which proliferate but do not attach to hydrogel. PVA-PEG hydrogel kits are also used to immobilize cells or specimens for imaging.


Avoid prolong exposure of PEG non cell-degradable crosslinker to air and store Mal-PVA in small portions to avoid frequent freeze-thaw cycles.

Features and Benefits

• Fast gelling (takes few seconds to minutes after addition of crosslinker)
• Flexibility in modulating gel stiffness
• Does not allow cell migration
• Cell inert hydrogel (if not customized with RGD peptide)
• Cells cannot be recovered

General description

The gel is formed by stable thioether bonds between maleimide groups of PVA (FAST-PVA) and thiol groups on PEG non cell-degradable crosslinker. Malemide-functionalized PVA is specifically used to decrease the time for gel formation. The PVA polymer does not have cell attachment sites, but it can be customized to conjugate RGD peptide using TrueGel3D RGD peptide (TRUERGD-1EA) prior to the crosslinking step.

Safety & Documentation

Safety Information

UN 1789 8 / PGIII
Protocols & Articles


Cyst Formation of MDCK Cells in TrueGel3D™ Hydrogels

Improved cell culture techniques from 2D to 3D have provided models that more closely mimic the native physiological condition (gene expression, cellular functions and cell behavior1). The TrueGel3D™...
Keywords: Adhesion, Cell culture, Confocal microscopy, Gene expression, Microscopy, Morphogenesis

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

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

Utilization of TrueGel3D™ Hydrogels to Study Fibroblast Spreading

Fibroblasts that are present in the stroma secrete glycoproteins and polysaccharides to form extracellular matrix. They maintain the structural integrity within the connective tissue and play a key r...
Keywords: Adhesion, Cancer, Cell culture, Confocal microscopy, Diseases, Gene expression, Microscopy

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