Bone marrow mesenchymal stem cells, platelet-rich plasma and nanohydroxyapatite-type I collagen beads were integral parts of biomimetic bone substitutes for bone regeneration

Bo Nian Lin, Shu Wen Whu, Chih Hwa Chen, Fu Yin Hsu, Jyh Cheng Chen, Hsia Wei Liu, Chien Hao Chen, Hau Min Liou

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Platelet rich plasma (PRP), which includes many growth factors, can activate osteoid production, collagen synthesis and cell proliferation. Nanohydroxyapatite-type I collagen beads (CIB), which mimetic natural bone components, are not only flexible fillers for bone defect but also encourage osteogenesis. Bone marrow mesenchymal stem cells (BMSCs) are often used as an abundant cell source for tissue engineering. We used a rabbit model to combine PRP, CIB and BMSCs (CIB+PRP+BMSC) into a bone-like substitute to study its impact on bone regeneration, when compared to defect alone, PRP, CIB+PRP, and PRP+BMSC. CIB+PRP upregulated more alkaline phosphatase (ALP) activity in BMSCs than PRP alone at 4 weeks postoperation. CIB+PRP+BMSC and PRP+BMSC did not differ significantly in DNA content, total collagen content, and ALP activity at 8 weeks. In histological assay, both CIB+PRP+BMSC and PRP+BMSC showed more bone regeneration at 4 and 8 weeks. Higher trabecular bone volume in tissue volume (BV/TV) (31.15±2.67% and 36.93±1.01%), fractal dimension (FD) (2.30±0.18 and 2.65±0.02) and lower trabecular separation (Tb.Sp) (2.30±0.18 and 1.35±0.16) of CIB+PRP+BMSC than of other groups at 4 and 8 weeks, and approach to of bone tissue (BV/TV=24.35±2.13%; FD=2.65±0.06; Tb.Sp=4.19±0.95). CIB+PRP+BMSC significantly enhanced new bone formation at 4 week. Therefore, nanohydroxyapatite-type I collagen beads combined with PRP and BMSCs produced a bone substitute with efficiently improved bone regeneration that shows promise to repair bone defects.

Original languageEnglish
Pages (from-to)841-854
Number of pages14
JournalJournal of Tissue Engineering and Regenerative Medicine
Volume7
Issue number11
DOIs
Publication statusPublished - Nov 2013
Externally publishedYes

Keywords

  • Biomimetic
  • Bone marrow mesenchymal stem cell
  • Bone regeneration
  • Bone substitute
  • Nanohydroxyapatite-type I collagen beads
  • Platelet-rich plasma

ASJC Scopus subject areas

  • Biomedical Engineering
  • Medicine (miscellaneous)
  • Biomaterials

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