Mesenchymal Stem Cell Applications in Cartilage Regeneration and Tissue Engineering

Mesenchymal stem cells (MSCs) have emerged as a versatile platform for repairing articular cartilage owing to their multipotent differentiation capacity, immunomodulatory properties and paracrine activity. Isolated from bone marrow, adipose tissue, synovium and other connective tissues, MSCs can be expanded in vitro and directed towards chondrogenic lineages under defined culture conditions. Scaffold‐based approaches combine MSCs with natural or synthetic hydrogels, biopolymer frameworks and three‐dimensional bioprinting to produce constructs that mimic the extracellular matrix of hyaline cartilage. Scaffold‐free techniques, including cell‐aggregate formation and dynamic self‐regenerating cartilage, exploit cellular self‐organisation to yield neocartilage with high glycosaminoglycan content and collagen type II deposition. Emerging strategies harness MSC‐derived extracellular vesicles and mechanical or biochemical stimuli to enhance matrix maturation, integration with host tissue and long‐term functional restoration. Despite advances in controlling MSC heterogeneity and in vivo delivery, challenges remain in sustaining mechanical properties, ensuring stable chondral phenotype and preventing hypertrophic differentiation. Progress in biomaterial design, bioreactor conditioning and endogenous stem cell activation continues to expand the therapeutic potential of MSCs for clinical translation in osteoarthritis and focal cartilage defects.

Research from Nature Portfolio

Recent studies have identified a population of joint morphogenetic cells in adult synovium that express lineage markers distinct from classical bone‐marrow MSCs. These cells proliferate in response to cartilage injury, contribute directly to repair and can be stimulated via YAP signalling to enhance synovial lining expansion and cartilage integration. In parallel, intra‐articular administration of synovial MSCs in murine models has demonstrated improved defect filling and matrix quality compared with controls, indicating that local transplantation of endogenous MSC populations can accelerate hyaline cartilage restoration without eliciting adverse immune reactions. These foundational findings underline the untapped regenerative capacity of joint‐resident progenitors and support further refinement of cell‐targeted therapies.

Mesenchymal Stem Cell Applications in Cartilage Regeneration and Tissue Engineering publication trend

The graph below shows the total number of articles in mesenchymal stem cell applications in cartilage regeneration and tissue engineering across all publications each year (not limited to Nature Index journals).

Technical terms

Mesenchymal stem cell (MSC): A multipotent stromal cell capable of differentiating into bone, cartilage and fat, with immunomodulatory and paracrine signalling functions.

Chondrogenesis: The process by which MSCs differentiate into chondrocytes and synthesise cartilage‐specific extracellular matrix components such as collagen type II and proteoglycans.

Extracellular matrix (ECM): A network of collagen, proteoglycans and glycoproteins that provides structural support and biochemical cues for tissue function.

Scaffold: A three‐dimensional biomaterial framework designed to support cell attachment, proliferation and differentiation in tissue engineering.

Aggregate culture: A scaffold‐free technique where MSCs form compact spheroids or pellets, promoting enhanced cell–cell interactions and chondrogenic differentiation.

References

1. Adipose, Bone Marrow and Synovial Joint-Derived Mesenchymal Stem Cells for Cartilage Repair. Frontiers in Genetics (2016).
2. Properties and usefulness of aggregates of synovial mesenchymal stem cells as a source for cartilage regeneration. Arthritis Research & Therapy (2012).
3. Laser Ablation Facilitates Implantation of Dynamic Self-Regenerating Cartilage for Articular Cartilage Regeneration. Journal of Functional Biomaterials (2024).
4. Joint morphogenetic cells in the adult mammalian synovium. Nature Communications (2017).
5. Intra-articular injection of synovial mesenchymal stem cells improves cartilage repair in a mouse injury model. Scientific Reports (2016).
6. Cartilage 3D bioprinting for rhinoplasty using adipose‐derived stem cells as seed cells: Review and recent advances. Cell Proliferation (2023).
7. Synovium-Derived and Bone-Derived Mesenchymal Stem/Stromal Cells from Early OA Patients Show Comparable In Vitro Properties to Those of Non-OA Patients. Cells (2024).
8. Heterogeneity of mesenchymal stem cells in cartilage regeneration: from characterization to application. npj Regenerative Medicine (2021).