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Multiscale patterning of a biomimetic scaffold integrated with composite microspheres
Silvia Minardi1, Monica Sandri, Jonathan O Martinez
1Bioceramics and Bio-hybrid composites, Institute of Science and Technology for Ceramics, National Research Council of Italy (ISTEC-CNR), via Granarolo 64, 48018, Faenza, RA, Italy; Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX, 77030, USA.
Researchers developed a customizable collagen scaffold using nanostructured microspheres to mimic tissue structure and biochemical composition for regenerative medicine applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Ideal scaffolds for regenerative medicine require multiscale structural mimicry and spatiotemporal recapitulation of the extracellular matrix (ECM).
- Existing scaffolds often struggle to achieve both structural fidelity and controlled biochemical release.
- Developing advanced materials is crucial for mimicking native tissue complexity.
Purpose of the Study:
- To engineer a multiscale collagen scaffold with integrated nanostructured composite microspheres for controlled release of reporter proteins.
- To achieve spatial and temporal control over biochemical patterning within the scaffold.
- To create a customizable scaffold that mimics native tissue architecture and composition.
Main Methods:
- A multiscale approach was employed, integrating nanostructured composite microspheres loaded with reporter proteins into a multi-compartment collagen scaffold.
- Structural integrity at nano- and microscale levels was preserved.
- Spatial confinement and staged/zero-order release kinetics of microspheres were utilized for controlled protein delivery.
Main Results:
- The functionalized collagen scaffold maintained its macroscopic structural features (pore size, porosity, swelling).
- Reporter protein release was spatially confined to specific scaffold layers.
- Staged and zero-order release kinetics achieved temporal biochemical patterning within the scaffold.
- The scaffold demonstrated versatile manufacturing for customization.
Conclusions:
- This study presents a versatile, customizable scaffold capable of mimicking native tissue at multiple scales.
- The developed scaffold enables precise spatial and temporal control over biochemical cues, advancing regenerative medicine possibilities.
- The multiscale integration of nanostructured components offers a promising strategy for engineering complex biological tissues.
