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Chitosan stabilizes platelet growth factors and modulates stem cell differentiation toward tissue regeneration.

Carbohydrate polymers (2013-08-31)
Alberto Busilacchi, Antonio Gigante, Monica Mattioli-Belmonte, Sandra Manzotti, Riccardo A A Muzzarelli
ABSTRACT

The idea of using chitosan as a functional delivery aid to support simultaneously PRP, stem cells and growth factors (GF) is associated with the intention to use morphogenic biomaterials to modulate the natural healing sequence in bone and other tissues. For example, chitosan-chondroitin sulfate loaded with platelet lysate was included in a poly(D,L-lactate) foam that was then seeded with human adipose-derived stem cells and cultured in vitro under osteogenic stimulus: the platelet lysate provided to the bone tissue the most suitable assortment of GF which induces the osteogenic differentiation of the mesenchymal stem cells. PDGF, FGF, IGF and TGF-β were protagonists in the repair of callus fractures. The release of GF from the composites of chitosan-PRP and either nano-hydroxyapatite or tricalcium phosphate was highly beneficial for enhancing MSC proliferation and differentiation, thus qualifying chitosan as an excellent vehicle. A number of biochemical characteristics of chitosan exert synergism with stem cells in the regeneration of soft tissues.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Chitosan, low molecular weight
Sigma-Aldrich
Chitosan, medium molecular weight
Sigma-Aldrich
Chitosan, high molecular weight
Sigma-Aldrich
Chitosan, from shrimp shells, ≥75% (deacetylated)
Sigma-Aldrich
Chitosan, from shrimp shells, practical grade
Sigma-Aldrich
Chitosan from shrimp shells, low-viscous