A comparison of Thai silk fibroin-based and chitosan-based materials on in vitro biocompatibility for bone substitutes.
The novel hybrid scaffolds fabricated from silk fibroin, gelatin, low deacetylation degree chitosan and hydroxyapatite were investigated for their in vitro biocompatibility and osteoconductivity to mouse pre-osteoblast cell line (MC3T3-E1) and rat bone marrow-derived stem cells (MSC). We found that gelatin-conjugated silk fibroin films and scaffolds dominantly promoted cell adhesion and proliferation. Film and scaffold prepared from gelatin-conjugated silk fibroin with hydroxyapatite grown crystals effectively enhanced osteogenic differentiation of both cell types, as evaluated by alkaline phosphatase activity and calcium content. However the blend of hydroxyapatite/low deacetylation degree chitosan hybrid materials did not support cell growth. Furthermore, the blended hydroxyapatite in the bulk scaffold was found to be less effective for osteogenic differentiation than the scaffold with hydroxyapatite grown crystals. The comparative study between MC3T3-E1 and MSC showed that both cell types had similar trend of proliferation and osteogenic differentiation on the same material. Also, higher proliferative rate of MC3T3-E1 than MSC was observed.
Vachiraroj
Nuttapon
N
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, PhayaThai Road, Phatumwan, Bangkok 10330, Thailand.
Ratanavaraporn
Juthamas
J
Damrongsakkul
Siriporn
S
Pichyangkura
Rath
R
Banaprasert
Tanom
T
Kanokpanont
Sorada
S
D016475:3T3 Cells; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry*; D012831:Bombyx; D001854:Bone Marrow Cells / Q000166:cytology; D018786:Bone Substitutes / Q000737:chemistry*; D002448:Cell Adhesion; D002454:Cell Differentiation; D049109:Cell Proliferation; D048271:Chitosan / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry; D005349:Fibroins / Q000737:chemistry*; D066298:In Vitro Techniques; D051379:Mice; D051381:Rats; D047011:Silk / Q000378:metabolism*; D013785:Thailand
D001672:Biocompatible Materials; D018786:Bone Substitutes; D047011:Silk; D005349:Fibroins; D048271:Chitosan; D017886:Durapatite; D000469:Alkaline Phosphatase