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Related Experiment Video

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Mineralized paper scaffolds for bone tissue engineering.

Xinchen Wu1,2, Kierra Walsh2,3, Sanika Suvarnapathaki1,2

  • 1Biomedical Engineering and Biotechnology Program, University of Massachusetts Lowell, Lowell, Massachusetts, USA.

Biotechnology and Bioengineering
|December 11, 2020
PubMed
Summary
This summary is machine-generated.

Mineralized paper scaffolds show promise for bone tissue engineering. Sequential mineralization enhances mineral content, promoting osteoinductivity and biocompatibility in vivo.

Keywords:
bonemineralizationpaper scaffoldtissue engineering

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Mineralized polymer scaffolds are effective for bone tissue engineering.
  • Sequential mineralization is a key technique for creating 3D scaffolds.
  • Paper's porous, flexible structure makes it a suitable scaffold material.

Purpose of the Study:

  • To fabricate and evaluate paper-based mineralized scaffolds using sequential mineralization.
  • To investigate the effect of incubation time on mineral content.
  • To assess the osteoinductivity and in vivo performance of these scaffolds.

Main Methods:

  • Fabrication of paper scaffolds via sequential mineralization with varying incubation times (30 min vs. 24 h).
  • Mineral content analysis across multiple mineralization cycles.
  • Quantitative reverse transcription-polymerase chain reaction (RT-qPCR) for osteogenic gene expression.
  • Subcutaneous implantation in rats to evaluate biocompatibility and vascularization.

Main Results:

  • Mineral content increased with mineralization cycles, with longer incubation (24 h) yielding higher mineralization.
  • Mineralized scaffolds demonstrated osteoinductivity, confirmed by upregulated bone-specific gene expression.
  • In vivo studies showed favorable biocompatibility, significant vascularization, and non-immunogenicity.

Conclusions:

  • Sequentially mineralized paper scaffolds are osteoinductive and biocompatible.
  • These scaffolds represent a promising biomaterial for bone tissue engineering applications.
  • The fabrication method allows for tunable mineral content for enhanced bone regeneration.