Growth factor-delivery systems for tissue engineering: a materials perspective

The transplantation of organs, their surgical reconstruction or implantation of synthetic devices that can perform the function of organs, are the currently available methods for treating loss of tissue/organs in humans. However, the limitations associated with these techniques have led to the development of tissue engineering. One of the primary goals of tissue engineering is to provide growth factor delivery systems that can induce desired cell responses both in vitro and in vivo, in order to cause accelerated tissue regeneration. To make growth factors a more therapeutically viable alternative for the treatment of chronic degenerative diseases, a wide range of natural and synthetic materials have been employed as vehicles for their controlled delivery. The choice of material and design of the carrier device influence the mode of immobilization of growth factors on the scaffolds and their local/systemic administration. From a tissue engineer’s perspective, materials could be used for designing scaffolds as well as for delivering single or multiple growth factors. Therefore, this review discusses growth factor delivery systems, with particular reference to carrier-based growth factor delivery systems with a focus on materials.

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