Chitin Composites for Tissue Engineering

Chitin, a natural polysaccharide derived from the exoskeletons of crustaceans and cell walls of fungi, is a promising candidate for tissue engineering applications. It possesses many attractive properties like excellent biocompatibility, biodegradability, and structural similarity to ECM, making it ideal for supporting cellular activity and tissue regeneration. Chitin, when combined with other materials like polymers, ceramics, and metals, can enhance the mechanical strength and bioactivity of the composite made. Many studies have been reported on the integration of chitin with polymers like PLGA, to create scaffolds, which provide both structural integrity and favourable conditions for the cells to attach and proliferate. Chitin, when combined with bioactive ceramics like hydroxyapatite, can improve osteogenesis and mimic the mineral composition of bone tissue. Additionally, incorporation of metal nanoparticles into chitin can impart antimicrobial properties, while drug-loaded nanoparticles can facilitate the sustained and controlled release of the drug at a specific site. This chapter not only discusses the use of chitin when combined with various materials, but also discusses the various applications in tissue engineering of bone, cartilage, cardiac, and skin repair. Chitin composites can provide a conductive environment for osteoblasts to grow and aid in mineralisation, and the similarity of chitin to components of the ECM can be explored for cartilage and skin tissue engineering. Overall, the combined effect of chitin composites in various applications marks its potential in revolutionising the field of tissue engineering.