Dual growth factor-releasing nanoparticle/hydrogel system for cartilage tissue engineering

• Published in: Journal of materials science. Materials in medicine Vol. 21; no. 9; pp. 2593 - 2600
• Main Authors: Lim, Sung Mook, Oh, Se Heang, Lee, Hee Hoon, Yuk, Soon Hong, Im, Gun Il, Lee, Jin Ho
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.09.2010; Springer; Springer Nature B.V
• Subjects: Animals; Biological and medical sciences; Biomaterials; Biomedical Engineering and Bioengineering; Biomedical materials; Biotechnology; Cartilage; Cartilage - growth & development; Ceramics; Chemistry and Materials Science; Composites; Fundamental and applied biological sciences. Psychology; Glass; Health. Pharmaceutical industry; Hydrogels; Industrial applications and implications. Economical aspects; Materials Science; Miscellaneous; Nanoparticles; Natural Materials; Polymer Sciences; Proteins; Regenerative Medicine/Tissue Engineering; Stem cells; Surfaces and Interfaces; Thin Films; Tissue Engineering; Chondrogenic Differentiation; Alginate; Chitosan; Sodium Alginate; CaSO4; Hydrogel; Articular cartilage; Tissue engineering; Nanoparticle; Growth factor; Biomedical engineering
• ISSN: 0957-4530; 1573-4838
• DOI: 10.1007/s10856-010-4118-1

In order to induce the chondrogenesis of mesenchymal stem cells (MSCs) in tissue engineering, a variety of growth factors have been adapted and encouraging results have been demonstrated. In this study, we developed a delivery system for dual growth factors using a gelation rate controllable alginate solution (containing BMP-7) and polyion complex nanoparticles (containing TGF-β 2 ) to be applied for the chondrogenesis of MSCs. The dual growth factors (BMP-7/TGF-β 2 )-loaded nanoparticle/hydrogel system showed a controlled release of both growth factors: a faster release of BMP-7 and a slower release of TGF-β 2 , ca., approximately 80 and 30% release at the end of an incubation period (21 days), respectively, which may be highly desirable for chondrogenic differentiation of MSCs. On the contrary, the release of each growth factor from the dual growth factors-loaded hydrogel (without the nanoparticles) was much slower than that of the nanoparticle/hydrogel system, approximately 36% (BMP-7) and 16% (TGF-β 2 ) for 21 days, and this is more than likely attributed to the aggregation between growth factors during the hydrogel fabrication step. The nanoparticle/hydrogel system with separate growth factor loading may provide desirable growth factor delivery kinetics for cartilage regeneration, as well as the chondrogenesis of MSCs.