Aspirin-Enhanced Bone Regeneration Strategies

Aspirin, beyond its classical analgesic and anti-inflammatory roles, has emerged as a versatile adjuvant in bone tissue engineering. Its capacity to modulate the early inflammatory response, inhibit osteoclast activity and promote osteoblast differentiation has been harnessed in various delivery platforms. Strategies range from direct incorporation into polymeric scaffolds and hydrogels to drug-loaded nanoparticle coatings on graft substitutes. These systems aim to establish a bone-friendly microenvironment by synchronising transient immunomodulation with subsequent regenerative processes. By fine-tuning aspirin dosage and release kinetics, researchers have achieved enhanced mesenchymal stem cell recruitment and osteogenesis while curbing excessive inflammation. Recent scaffold designs that integrate mineral particles, nanofibres or dual-network hydrogels demonstrate accelerated and complete repair of critical-sized defects in preclinical models, highlighting aspirin’s translational potential for cost-effective therapies in fracture repair, periodontal regeneration and craniofacial reconstruction.

Research from Nature Portfolio

Recent studies have delineated aspirin’s influence on immune regulation and guided bone regeneration. One investigation showed that aspirin attenuates lipopolysaccharide-induced macrophage activation through inhibition of the NF-κB pathway, thereby promoting a pro-regenerative milieu and enhancing mandibular defect healing in animal models. A complementary study developed an asymmetric collagen-based membrane incorporating aspirin-loaded poly(lactic-co-glycolic acid) nanoparticles and curcumin, achieving sustained drug release, broad-spectrum antibacterial activity and enhanced osteogenic differentiation of dental pulp stem cells. In vivo application led to near-complete bone fill in jaw defects within four weeks, underscoring aspirin’s dual role in controlling inflammation and fostering new bone formation when delivered via advanced biomaterials.

Aspirin-Enhanced Bone Regeneration Strategies publication trend

The graph below shows the total number of articles in aspirin-enhanced bone regeneration strategies across all publications each year (not limited to Nature Index journals).

Technical terms

Immunomodulation: Regulation of the immune response to facilitate tissue repair.

Osteogenesis: Process of new bone formation by specialised cells called osteoblasts.

Osteoconduction: Property of a material to serve as a scaffold for new bone growth along its surface.

Mesenchymal Stem Cells (MSCs): Multipotent progenitor cells capable of differentiating into osteoblasts and other lineages.

Scaffold: Three-dimensional structure that provides mechanical support and delivery of bioactive cues for tissue regeneration.

References

1. Aspirin synergizes with mineral particle-coated macroporous scaffolds for bone regeneration through immunomodulation. Theranostics (2023).
2. Osteogenic and anti-inflammatory effect of the multifunctional bionic hydrogel scaffold loaded with aspirin and nano-hydroxyapatite. Frontiers in Bioengineering and Biotechnology (2023).
3. Aspirin inhibits LPS-induced macrophage activation via the NF-κB pathway. Scientific Reports (2017).
4. Nanofibrous asymmetric collagen/curcumin membrane containing aspirin-loaded PLGA nanoparticles for guided bone regeneration. Scientific Reports (2020).
5. Fabrication of Naturally Derived Double-Network Hydrogels With a Sustained Aspirin Release System for Facilitating Bone Regeneration. Frontiers in Chemistry (2022).