Regenerative medicine holds great promise for orthopaedic surgery. As surgeons continue to face challenges regarding the healing of diseased or injured musculoskeletal tissues, regenerative medicine aims to develop novel therapies that will replace, repair, or promote tissue regeneration. This review article will provide an overview of the different research areas involved in regenerative medicine, such as stem cells, bioinductive factors, and scaffolds. The potential use of stem cells for orthopaedic tissue engineering will be addressed by presenting the current progress with skeletal muscle-derived stem cells. As well, the development of a revascularized massive allograft will be described and will serve as a prototypic model of orthopaedic tissue engineering. Lastly, we will describe current approaches used to design cell instructive materials and how they can be used to promote and regulate the formation of bony tissue.
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http://dx.doi.org/10.1002/jor.20432 | DOI Listing |
Biomacromolecules
January 2025
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, P. R. China.
Silk fibroin (SF) hydrogels are widely used in three-dimensional (3D) cell culture and tissue repair. Despite their importance, few studies have focused on regulating their degradation and further revealing the effects of the degradation process on encapsulated cell behaviors. Herein, SF hydrogels with equivalent initial properties and different degradation rates were prepared by adjusting the ratios between the hydrogel-encapsulated normal SF microspheres (MS) and enzyme-loaded SF microspheres (MS).
View Article and Find Full Text PDFSci Transl Med
January 2025
First Department of Medicine, Cardiology, TUM University Hospital, Technical University of Munich, School of Medicine and Health, Munich 81675, Germany.
In patients with cystic fibrosis (CF), repeated cycles of infection and inflammation eventually lead to fatal lung damage. Although diminished mucus clearance can be restored by highly effective CFTR modulator therapy, inflammation and infection often persist. To elucidate the role of the innate immune system in CF etiology, we investigated a CF pig model and compared these results with those for preschool children with CF.
View Article and Find Full Text PDFACS Nano
January 2025
Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
Exogenous neural stem cells (NSCs) have great potential to reconstitute damage spinal neural circuitry. However, regulating the metabolic reprogramming of NSCs for reliable nerve regeneration has been challenging. This report discusses the biomimetic dextral hydrogel (DH) with right-handed nanofibers that specifically reprograms the lipid metabolism of NSCs, promoting their neural differentiation and rapid regeneration of damaged axons.
View Article and Find Full Text PDFACS Nano
January 2025
Department of Orthopaedics, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, P.R. China.
Deer antler blastema progenitor cells (ABPCs) are promising for regenerative medicine due to their role in annual antler regeneration, the only case of complete organ regeneration in mammals. ABPC-derived signals show great potential for promoting regeneration in tissues with limited natural regenerative ability. Our findings demonstrate the capability of extracellular vesicles from ABPCs (EVs) to repair spinal cord injury (SCI), a condition with low regenerative capacity.
View Article and Find Full Text PDFAdv Exp Med Biol
January 2025
Requalite GmbH, Gräfelfing, Germany.
Peptide nanofibers have been attractive targets for regenerative medicine applications due to their tailorability to be easily functionalized for specific bioactivity, biocompatibility, ease of synthesis, adjustability of their physicochemical characteristics, and lack of biological contamination. Research groups have investigated their use for the regeneration of various tissues, such as bone, cartilage, brain, peripheral nerves, cardiac tissue, vascular tissues, endocrine cells, muscles, etc., for the treatment of degenerative diseases or tissue loss due to accidents or aging.
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