Abstract

CABALLERO MENDEZ, Lyda  and  GAVIRIA ARIAS, Duverney. Development and characterization of silk fibroin films for condral reparation. Rev. colomb. biotecnol [online]. 2019, vol.21, n.1, pp.71-81. ISSN 0123-3475.  https://doi.org/10.15446/rev.colomb.biote.v21n1.73137.

Silk fibroin is a protein that has been shown to be a biomaterial with great potential in regenerative medicine, due to its biocompatibility characteristics and its wide possibility of structural modification can be used as scaffold, favoring growth processes, cell differentiation and the regeneration of affected tissue. Bombix mori L. silkworm cocoons were used to make fibroin films, the silk fibroin were degummed using 0.02M Na2CO3, the obtained fibroin was dissolved with 9.3M LiBr, which was eliminated by dialysis and finally the fibroin solution was concentrated to 17% by counterdialysis. The fibroin was served in polystyrene boxes, dried at 90°C/24 hours and sterilized with 70% ethanol. The mesenchymal stem cells were seeded on fibroin films and induced differentiation using a specific chondrogenic medium. Differentiation was assessed in triplicate at 14 and 21 days by total RNA extraction, DNA synthesis copy and PCR amplification of a group of cartilage-specific genes using specific primers. Stable and resistant fibroin films that allowed cell growth and multiplication were fabricated, as well as the chondrogenic differentiation evidenced by the expression of chondrogenic genes, the viability and the cell count were not affected, the cells interacted with the scaffolding evidenced by the area of upholstery formed on the surface of the fibroin film. Finally, it is concluded that silk fibroin is a biomaterial that can serve as a potential scaffold for the regeneration of joint injuries.

Keywords : Bombyx mori; biomaterials; growth factor; chondrogenesis; regenerative medicine.

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