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Asim, Mulazim Hussain; Silberhumer, Stefanie; Shahzadi, Iram; Jalil, Aamir; Matuszczak, Barbara; Bernkop-Schnürch, Andreas
Carbohydrate polymers, 06/2020, Letnik: 237Journal Article
Display omitted •S-protected thiolated HA was synthesized by carbodiimide-mediated reaction.•S-protected HA showed enhanced cohesion upon addition of N-acetyl cysteine (NAC).•Due to addition of NAC, viscosity of S-protected thiolated HA increased 20-fold.•Cells encapsulated into scaffolds proliferated uniformly in polysaccharide matrix. The purpose of this study was to synthesize S-protected thiolated hyaluronic acid (HA) and to evaluate its potential for 3D cell culture scaffold. S-protected thiolated HA was synthesized by the covalent attachment of N-acetyl-S-((3-((2,5-dioxopyrrolidin-1-yl)oxy)-3-oxopropyl)thio)cysteine hydrazide ligand to the HA. Hydrogels were characterized for texture, swelling behavior and rheological properties. Furthermore, the potential of S-protected thiolated HA hydrogels as a scaffold for tissue engineering was evaluated by cell proliferation studies with Caco-2 and NIH 3T3 cells. It showed enhanced cohesion upon addition of N-acetyl cysteine (NAC). Dynamic viscosity of S-protected thiolated HA hydrogel was increased up to 19.5-fold by addition of NAC and 10.1-fold after mixing with mucus. Furthermore, Caco-2 and NIH 3T3 cells encapsulated into hydrogels proliferated in-vitro. As this novel S-protected thiolated HA is stable towards oxidation and forms highly cohesive gels when getting into contact with endogenous thiols due to disulfide-crosslinking, it is a promising tool for 3D cell culture scaffold.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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