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Stem-cell-derived ECM sheet-implant complexes for enhancing osseointegration.

Yuting Feng1, Zhiwei Jiang, Yanmin Zhang

  • 1Department of Implantology, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, No. 395, Yan'an Road, Xia-Cheng Region, Hangzhou, Zhejiang 310006, China. guo_li1977@zju.edu.cn.

Biomaterials Science
|October 19, 2020
PubMed
Summary
This summary is machine-generated.

Extracellular matrix (ECM) sheets derived from bone marrow mesenchymal stem cells (BMSCs) enhance dental implant osseointegration. This novel approach offers improved cell adhesion, proliferation, and new bone formation with easier storage and lower immunogenicity.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Dental implant surface modification aims to improve osseointegration.
  • Current cell sheet-implant complexes have limitations including complex preparation and immunogenicity.
  • Extracellular matrix (ECM) sheets present a cell-free alternative for implant surface modification.

Purpose of the Study:

  • To fabricate and evaluate extracellular matrix (ECM) sheet-implant complexes for enhanced osseointegration.
  • To assess the in vitro and in vivo effects of BMSC-derived ECM sheets on dental implants.

Main Methods:

  • Rat bone marrow mesenchymal stem cell (BMSC)-derived ECM sheets were fabricated.
  • ECM sheets were combined with sandblasted, large-grit, acid-etched (SLA) implants.
  • In vitro studies assessed BMSC adhesion, proliferation, and osteogenic differentiation.
  • In vivo studies evaluated osseointegration in rat tibial models.

Main Results:

  • ECM sheets were successfully constructed and demonstrated improved BMSC adhesion and proliferation.
  • BMSCs cultured on ECM sheets showed upregulated osteogenic gene expression (ALP, BMP2, Runx2).
  • ECM sheet-implant complexes exhibited superior new bone formation in vivo.

Conclusions:

  • BMSC-derived ECM sheets promote osseointegration both in vitro and in vivo.
  • ECM sheet-implant complexes offer a promising strategy with low immunogenicity and convenient storage.
  • This study presents a novel approach for dental implant surface modification using ECM sheets.