title: Growth factor-mediated effects on chondrogenic differentiation of mesenchymal stem cells in 3D semi-IPN poly(vinyl alcohol)-poly(caprolactone) scaffolds.
abstract: Cells, signaling molecules and three-dimensional (3D) scaffolds are the major contributors to the in vitro regeneration of cartilage. This study evaluates the differentiation of mesenchymal stem cells to chondrocytes, in a 3D semi-interpenetrating polymer network (semi-IPN) scaffold that gives an appropriate niche for chondrogenic differentiation. The 3D semi-IPN scaffold poly(vinyl alcohol) and poly(caprolactone) mimics the properties of extracellular matrix of native cartilage. The chondrogenic differentiation of mesenchymal stem cells on the 3D scaffolds is carried out by supplementing signaling molecules like TGFbeta1, TGFbeta3, and BMP2 individually and in two different combinations. The results indicate that each growth factor supplement or combinations showed a different influence on cell morphology, overall distribution of cells, and secretion of cartilage specific molecules. We conclude from our results, that a combination of TGFbeta3 and BMP2 promotes better differentiation of mesenchymal stem cells to chondrocytes in our scaffold. This study hence points out that an appropriate combination of 3D scaffolds and signaling molecules are required in the differentiation and maintenance of the chondrogenic phenotype during in vitro regeneration of cartilage tissue. (c) 2010 Wiley Periodicals, Inc. J Biomed Mater Res, 2010.
authors.affiliation: Division of Tissue Engineering and Regeneration Technologies, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum 695012, Kerala, India.
authors.forename: Neethu
authors.initials: N
authors.lastname: Mohan
authors.forename: Prabha D
authors.initials: PD
authors.lastname: Nair
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Tabata
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry; D018929:Cell Culture Techniques / Q000295:instrumentation / Q000379:methods; D002454:Cell Differentiation / Q000187:drug effects*; D002470:Cell Survival; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology / Q000502:physiology; D024043:Collagen Type II / Q000235:genetics / Q000378:metabolism; D005109:Extracellular Matrix / Q000737:chemistry / Q000378:metabolism; D036341:Intercellular Signaling Peptides and Proteins / Q000494:pharmacology*; D008422:Materials Testing; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D011091:Polyesters / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D016062:Porosity; D023822:Tissue Engineering / Q000295:instrumentation / Q000379:methods; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D024043:Collagen Type II; D036341:Intercellular Signaling Peptides and Proteins; D011091:Polyesters; D011108:Polymers; C016240:polycaprolactone; D011142:Polyvinyl Alcohol