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Hierarchical multi-layered scaffolds based on electrofluidodynamic processes for tissue engineering.

Agnieszka Piegat1, Agata Niemczyk1,2, Aldo R Boccaccini3

  • 1Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, 45 Piastow Ave, 70-311 Szczecin, Poland.

Biomedical Materials (Bristol, England)
|March 10, 2021
PubMed
Summary
This summary is machine-generated.

This study created advanced hierarchical scaffolds using 3D printing and electrofluidodynamic methods. The novel structure, featuring chitosan nanoparticles, improved cell seeding for tissue engineering and drug delivery applications.

Keywords:
3D printingelectrospinningelectrosprayhierarchical structurescaffolds

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Nanotechnology

Background:

  • Developing hierarchical scaffolds is crucial for advanced tissue engineering.
  • Combining 3D printing with electrofluidodynamic techniques offers unique fabrication possibilities.
  • Chitosan nanoparticles present potential for drug delivery and regenerative medicine.

Purpose of the Study:

  • To fabricate hierarchical scaffolds by integrating 3D printing with electrospinning and electrospraying.
  • To optimize the electrospraying process for chitosan grafted with linoleic acid (CHLA) nanoparticles.
  • To evaluate the impact of the hierarchical scaffold on preosteoblast cell seeding efficacy.

Main Methods:

  • Fabrication of a multi-layered scaffold using 3D printing for struts.
  • Electrospinning of poly(ϵ-caprolactone) fibers.
  • Electrospraying of chitosan grafted with linoleic acid (CHLA) to form nanoparticles.
  • Optimization of electrospraying parameters (solvent, concentration, flow rate).
  • Biological evaluation using mouse preosteoblasts (MC3T3-E1) for cell seeding efficacy.

Main Results:

  • Successfully produced hierarchical scaffolds combining 3D printed struts, electrospun fibers, and electrosprayed CHLA spheres.
  • Optimized electrospraying conditions yielded uniformly distributed CHLA spheres.
  • Hierarchical structure significantly enhanced cell seeding efficacy compared to 3D printed struts alone.
  • Electrosprayed nanoparticles did not negatively impact cell seeding efficiency.

Conclusions:

  • The developed hierarchical scaffold demonstrates enhanced cell seeding efficacy due to its structure.
  • The integration of CHLA nanoparticles via electrospraying is feasible and does not impede cell seeding.
  • This versatile scaffold holds promise for tissue engineering, particularly in drug delivery systems.