Tissue engineering materials

A biomaterial scaffold is one of the key factors for successful tissue engineering. Nanofiber tissue engineering materials made from biopolymers, such as PCA, PLA or collagen, with the appropriate mechanical and structural properties are used to prepare scaffolds which are suitable for implanting by different types of cells. Electrospun matrices show a controlled and reproducible nanofibrous architecture with a high surface-to-volume ratio and mimicking the natural extracellular matrix, which promotes cell adhesion and spreading in a three-dimensional shape.

In recent years reasercher show an increasing trend toward the approach of implanting scaffolds with controlled release of biomolecules, known as “bioactive scaffolds”. Various biomolecules can be incorporated within tissue-engineered scaffolds to enhance their functional properties for biomedical applications: the most frequently used biomolecules are proteins (e.g., growth factors or cytokines) and growth factor coding genes. Due to the possibility of ultrathin fiber diameters, electrospun fibrous matrices can have a large specific surface area, which enables effective delivery of biomolecules.

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References:

Martins A, Duarte AR, Faria S, Marques AP, Reis RL, Neves NM Osteogenic induction of hBMSCs by electrospun scaffolds with dexamethasone release functionality. Biomaterials. 2010 Aug; 31(22):5875-85.

Porter JR, Ruckh TT, Popat KC Bone tissue engineering: a review in bone biomimetics and drug delivery strategies. Biotechnol Prog. 2009 Nov-Dec; 25(6):1539-60.

Ji W, Sun, Y, Yang F, Beucken J, Fan M, Chen Z, Jansen J Bioactive electrospun Scaffolds delivering growth factors and genes for tissue engineering applications . Wei J. et al Pharma Res. 2011 June; 28(6):1259-1272.

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