Cell and Tissue Research

, Volume 356, Issue 1, pp 97–107

Bone tissue engineering by using a combination of polymer/Bioglass composites with human adipose-derived stem cells

  • Wei Lu
  • Kun Ji
  • Jennifer Kirkham
  • Yu Yan
  • Aldo R. Boccaccini
  • Margaret Kellett
  • Yan Jin
  • Xuebin B. Yang
Regular Article

DOI: 10.1007/s00441-013-1770-z

Cite this article as:
Lu, W., Ji, K., Kirkham, J. et al. Cell Tissue Res (2014) 356: 97. doi:10.1007/s00441-013-1770-z

Abstract

Translational research in bone tissue engineering is essential for “bench to bedside” patient benefit. However, the ideal combination of stem cells and biomaterial scaffolds for bone repair/regeneration is still unclear. The aim of this study is to investigate the osteogenic capacity of a combination of poly(DL-lactic acid) (PDLLA) porous foams containing 5 wt% and 40 wt% of Bioglass particles with human adipose-derived stem cells (ADSCs) in vitro and in vivo. Live/dead fluorescent markers, confocal microscopy and scanning electron microscopy showed that PDLLA/Bioglass porous scaffolds supported ADSC attachment, growth and osteogenic differentiation, as confirmed by enhanced alkaline phosphatase (ALP) activity. Higher Bioglass content of the PDLLA foams increased ALP activity compared with the PDLLA only group. Extracellular matrix deposition after 8 weeks in the in vitro cultures was evident by Alcian blue/Sirius red staining. In vivo bone formation was assessed by using scaffold/ADSC constructs in diffusion chambers transplanted intraperitoneally into nude mice and recovered after 8 weeks. Histological and immunohistochemical assays indicated significant new bone formation in the 40 wt% and 5 wt% Bioglass constructs compared with the PDLLA only group. Thus, the combination of a well-developed biodegradable bioactive porous PDLLA/Bioglass composite scaffold with a high-potential stem cell source (human ADSCs) could be a promising approach for bone regeneration in a clinical setting.

Keywords

Bone tissue engineering Adipose-derived stem cells PDLLA/Bioglass® composite Biodegradable polymers In vivo 

Abbreviations

ADSCs

Adipose-derived stem cells

ALP

Alkaline phosphatase

CMFDA

5-Chloromethylfluorescein diacetate

COL-I

Collagen I

FBS

Fetal bovine serum

MSCs

Mesenchymal stem cells

NBF

Neutral buffered formalin

OCN

Osteocalcin

PBS

Phosphate-buffered saline

PDLLA

Poly(DL-lactic acid)

SEM

Scanning electron microscopy

αMEM

Alpha-modified minimal essential medium

3D

Three-dimensional

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Wei Lu
    • 1
    • 2
    • 3
  • Kun Ji
    • 1
    • 4
  • Jennifer Kirkham
    • 5
    • 6
  • Yu Yan
    • 7
  • Aldo R. Boccaccini
    • 8
  • Margaret Kellett
    • 9
  • Yan Jin
    • 1
  • Xuebin B. Yang
    • 2
    • 6
  1. 1.Research and Development Center for Tissue Engineering, School of StomatologyThe Fourth Military Medical UniversityXi’anPeople’s Republic of China
  2. 2.Biomaterials and Tissue Engineering Group, Department of Oral Biology, Leeds Dental InstituteUniversity of LeedsLeedsUK
  3. 3.Department of DentistryThe 461 Hospital of PLAChangchunPeople’s Republic of China
  4. 4.Department of Pediatric Dentistry, School of StomatologyThe Fourth Military Medical UniversityXi’anPeople’s Republic of China
  5. 5.Biomineralization Group, Leeds Dental InstituteUniversity of LeedsLeedsUK
  6. 6.NIHR Leeds Musculoskeletal Biomedical Research UnitChapel Allerton HospitalLeedsUK
  7. 7.Corrosion and Protection Center, Key Laboratory for Environmental Fracture (MOE)University of Science and Technology BeijingBeijingPeople’s Republic of China
  8. 8.Institute of BiomaterialsUniversity of Erlangen-NurembergErlangenGermany
  9. 9.Department of Periodontology, Leeds Dental InstituteUniversity of LeedsLeedsUK

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