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Articular cartilage is susceptible to damage but hard to self-repair due to its avascular nature. Traditional treatment methods are not able to produce satisfactory effects. Mesenchymal stem cells (MSCs) have shown great promise in cartilage repair. However, the therapeutic effect of MSCs is often unstable partly due to their heterogeneity. Understanding the heterogeneity of MSCs and the potential of different types of MSCs for cartilage regeneration will facilitate the selection of superior MSCs for treating cartilage damage. This review provides an overview of the heterogeneity of MSCs at the donor, tissue source and cell immunophenotype levels, including their cytological properties, such as their ability for proliferation, chondrogenic differentiation and immunoregulation, as well as their current applications in cartilage regeneration. This information will improve the precision of MSC-based therapeutic strategies, thus maximizing the efficiency of articular cartilage repair.
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http://dx.doi.org/10.1038/s41536-021-00122-6 | DOI Listing |
Int J Biol Macromol
September 2025
Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai, 200444, China; National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, 200444, China; Shanghai Key Laboratory of Intelligen
Osteochondral defects caused by trauma, obesity, tumors, and degenerative osteoarthropathies severely impair patients' quality of life. Multilayer tissue engineering scaffolds offer promising strategies for osteochondral repair by enhancing structural biomimicry. In this study, a triple-layer GelMA-alginate-based osteochondral scaffold (TCOS) was fabricated using an enhanced multi-axis, multi-process, multi-material 3D bioprinting system (MAPM-BPS).
View Article and Find Full Text PDFACS Nano
September 2025
School of Medicine, Nankai University, Tianjin 300071, China.
In situ articular cartilage (AC) regeneration is a meticulously coordinated process. Microfracture has been the most extensive clinical approach in AC repair, but it faces challenges such as matrix degradation, generation, and remodeling within a local inflammatory microenvironment. So far, it remains a challenge to establish a multistage regulatory framework for coordinating these cellular events, particularly the immune response and chondrocyte proliferation in microfracture-mediated AC repair microenvironments, which is crucial for promoting AC regeneration quality.
View Article and Find Full Text PDFJ Adv Res
September 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, The Fourth Military Medical Univ
Introduction: Aberrant biomechanical force-induced chondrocyte adipogenesis is involved in the development of temporomandibular joint osteoarthritis (TMJ OA). Growth differentiation factor 11 (GDF11) has been implicated in this process. However, whether mechanosensitive histone deacetylase 3 (HDAC3) regulates GDF11 signaling in the context of TMJ OA remains to be elucidated.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, PR China. Electronic address:
Due to the poor regeneration ability of cartilage tissue, the design and fabrication of permanent hydrogel cartilage scaffolds with mechanical properties matching is still an urgent challenge. In this study, we propose an "inner swelling-outer restraint" strategy to construct Janus hydrogel for pressure-bearing cartilage replacement, which is inspired by the "Lamina-splendens" structure of cartilage. As a proof of concept, the poly(vinyl alcohol)/carboxymethyl cellulose sodium (PVA/CMCNa) layer is designed to capture more fluid by introducing negatively charged aggregates, while the macromolecular conformation of the PVA/MoS layer can be densified through wet annealing, thereby increasing the liquid permeation resistance of the PVA/CMCNa layer.
View Article and Find Full Text PDFStem Cell Rev Rep
September 2025
Medical Laboratories Techniques Department, College of Health and Medical Techniques, Al-Mustaqbal University, Babylon, 51001, Iraq.
Stem cell-based tissue engineering offers transformative solutions for regenerating damaged tissues, such as bone, cartilage, and neural tissues. Chitosan and cellulose nanoparticles have emerged as promising biomaterials for enhancing stem cell delivery and scaffold performance due to their biocompatibility, biodegradability, and tunable properties. Chitosan, with its antimicrobial and bioadhesive properties, supports stem cell adhesion and differentiation in soft tissue scaffolds.
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