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Regeneration and restoring the function of the myocardial‐infracted hearts have been one of the constant challenges in medicine. Recently, tissue engineering, using biocompatible substrates and stem cells, holds a real promise to solve these problems. Herein, poly(lactic‐co‐glycolic acid) (PLGA) nanofibers and platelet‐rich plasma (PRP) enriched PLGA nanofibers (PLGA‐PRP) were fabricated by electrospinning. Scanning electron microscopy (SEM) demonstrated that fiber diameters in PLGA scaffolds with and without PRP were in the range of 500 ± 280 nm and fibers were also bead free, smooth, in random orientation, and with interconnected pores. During culture of the human‐induced pluripotent stem cells (iPSCs) on the nanofibrous scaffold, further differentiation of the iPSCs to cardiomyocytes was detected in PLGA‐PRP nanofibers compared to the PLGA. This improvement in differentiation potential was evaluated at the morphological, molecular gene, and protein expression levels using SEM, real‐time reverse transcription‐polymerase chain reaction (RT‐PCR), and immunocytochemistry, respectively. The results obtained in this study highlighted the significance of natural growth factors present in the artificial scaffold applied in cardiac tissue engineering according to the improvements in cell‐biomaterial interactions. Taken together, our result indicated that PRP‐incorporated PLGA could be considered as a great potential candidate to use for engineering suitable myocardium replacement constructs.

Application of wound-healing/dressing biomaterials is amongst the most promising approaches for wound repair through protection from pathogen invasion/contamination, maintaining moisture, absorbing exudates, modulating inflammation, and facilitating the healing process. A wide range of materials are used to fabricate wound-healing/dressing biomaterials. Active wound-healing/dressings are next-generation alternatives for passive biomaterials, which provide a physical barrier and induce different biological activities, such as antibacterial, antioxidant, and proliferative effects. Cellulose-based biomaterials are particularly promising due to their tunable physical, chemical, mechanical, and biological properties, accessibility, low cost, and biocompatibility. A thorough description and analysis of wound-healing/dressing structures fabricated from cellulose-based biomaterials is discussed in this review. We emphasize and highlight the fabrication methods, applied bioactive molecules, and discuss the obtained results from in vitro and in vivo models of cellulose-based wound-healing biomaterials. This review paper revealed that cellulose-based biomaterials have promising potential as the wound-dressing/healing materials and can be integrated with various bioactive agents. Overall, cellulose-based biomaterials are shown to be effective and sophisticated structures for delivery applications, safe and multi-customizable dressings, or grafts for wound-healing applications.

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After about three decades of experience, tissue engineering has become one of the most important approaches in reconstructive medical research to treat non-selfhealing bone injuries and lesions. Herein, nanofibrous composite scaffolds fabricated by electrospinning, which containing of poly(L-lactic acid) (PLLA), graphene oxide (GO), and bone morphogenetic protein 2 (BMP2) for bone tissue engineering applications. After structural evaluations, adipose tissue derived mesenchymal stem cells (AT-MSCs) were applied to monitor scaffold's biological behavior and osteoinductivity properties. All fabricated scaffolds had nanofibrous structure with interconnected pores, bead free, and well mechanical properties. But the best biological behavior including cell attachment, protein adsorption, and support cells proliferation was detected by PLLA-GO-BMP2 nanofibrous scaffold compared to the PLLA and PLLA-GO. Moreover, detected ALP activity, calcium content and expression level of bone-related gene markers in AT-MSCs grown on PLLA-GO-BMP2 nanofibrous scaffold was also significantly promoted in compression with the cells grown on other scaffolds. In fact, the simultaneous presence of two factors, GO and BMP2, in the PLLA nanofibrous scaffold structure has a synergistic effect and therefore has a promising potential for tissue engineering applications in the repair of bone lesions.