Extracellular Matrix-Based Strategies in Bone Tissue Engineering

Bone tissue engineering seeks to restore structural and functional integrity by emulating the instructive role of the extracellular matrix (ECM). Strategies derive from decellularized matrices, synthetic polymers decorated with matrix proteins, cell-secreted coatings and injectable hydrogels. Decellularized bone matrices preserve hierarchical porosity, mineral composition and growth factor reservoirs that guide cell adhesion, proliferation and differentiation. Synthetic scaffolds modified with collagen, glycosaminoglycans or peptide motifs mimic specific matrix signals to enhance osteoinduction and angiogenesis, while offering tunable mechanics and degradability. Hybrid composites combine natural and synthetic constituents to balance bioactivity and load-bearing capacity. ECM-based hydrogels facilitate minimally invasive delivery of stem cells and bioactive molecules, promoting uniform tissue infiltration and vascular network formation. These approaches address the limitations of autografts and allografts, offering reproducible, off-the-shelf constructs with immunomodulatory and regenerative potential for applications ranging from fracture repair to large-scale defect reconstruction worldwide.

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Research from all publishers

Recent studies demonstrate the evolution of composite dECM scaffolds that integrate bone-derived matrix with polymers such as alginate or chitosan to enhance mechanical stability and control degradation. One approach cationizes decalcified bone matrix using quaternary ammonium salts, yielding scaffolds with dual antibacterial and osteogenic functions, crucial for infected defect repair. Electrospun polycaprolactone scaffolds decorated with in vitro generated bone-like ECM have shown superior mesenchymal stem cell adhesion, proliferation and differentiation, together with increased angiogenesis observed in chorioallantoic membrane assays. Injectable hydrogels formulated from decellularized adipose or bone ECM encapsulate progenitor cells and growth factors, enabling minimally invasive treatment of critical-sized defects and promoting uniform mineral deposition in vivo. Collectively, these advances underscore the versatility of ECM-based platforms in directing cell fate and restoring bone tissue architecture.

Extracellular Matrix-Based Strategies in Bone Tissue Engineering publication trend

The graph below shows the total number of articles in extracellular matrix-based strategies in bone tissue engineering across all publications each year (not limited to Nature Index journals).

Technical terms

Extracellular matrix (ECM): A complex network of proteins and polysaccharides secreted by cells that provides structural support and biochemical signals.

Decellularized extracellular matrix (dECM): ECM derived from native tissue after removal of cellular components to minimise immunogenicity while preserving architecture and bioactivity.

Scaffold: A three-dimensional structure designed to support cell attachment, growth and differentiation in tissue engineering.

Osteogenesis: The biological process of new bone formation mediated by osteoblasts.

Osteoinduction: The ability of a material to recruit and induce undifferentiated cells to become osteogenic cells.

Osteoconduction: The property of a scaffold to support the growth of new bone along its surface or within its porous network.

References

1. Cationized Decalcified Bone Matrix for Infected Bone Defect Treatment. BME Frontiers (2024).
2. In Vivo Assessment of Bone Regeneration in Alginate/Bone ECM Hydrogels with Incorporated Skeletal Stem Cells and Single Growth Factors. PLOS ONE (2015).
3. Boosting the Osteogenic and Angiogenic Performance of Multiscale Porous Polycaprolactone Scaffolds by In Vitro Generated Extracellular Matrix Decoration. ACS Applied Materials & Interfaces (2020).
4. Decellularized Adipose Tissue Hydrogel Promotes Bone Regeneration in Critical-Sized Mouse Femoral Defect Model. Frontiers in Bioengineering and Biotechnology (2019).