A novel nano-composite scaffold for cartilage tissue engineering

In this study, a hybrid Poly (lactic-co-glycolic acid) (PLGA)/ Hyaluronic acid (Ha)/ Fibrin/ 45S Bioactive Glass (45SBG) nanocomposite scaffolds seeded with human AdiposeDerived Mesenchymal Stem Cells (hADMSCs) were investigated as a construct for osteoarthritis (OA), articular cartilage (AC), and subchondral bone defects therapies. The bioactivity and biodegradation of the nanocomposite scaffolds were assessed in simulated body fluid (SBF) and phosphate buffer saline (PBS) solution, respectively. Furthermore, MTT analysis was performed in order to determine attachment and viability of hADMSCs. Ultimately, results indicated that bioactivity were increased in nanocomposite scaffolds as compared to the pure PLGA scaffold. As well as, biodegradation assay exhibited that the addition of Ha, fibrin, and 45SBG nanoparticles could modify the degradation rate of PLGA. The nanocomposite scaffolds were not showed any cytotoxicity and the hADMSCs were attached on the scaffolds and proliferate properly. According to our investigation, it was concluded that using natural and synthetic polymers along with BG nanoparticles may provide a suitable construct and could show a beneficial role in AC tissue engineering and OA therapy.