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Bone regeneration in minipigs via calcium phosphate cement scaffold delivering autologous bone marrow mesenchymal stem cells and platelet-rich plasma.

Abstract：

:Macroporous calcium phosphate cement (CPC) with stem cell seeding is promising for bone regeneration. The objective of this study was to investigate the effects of co-delivering autologous bone marrow mesenchymal stem cells (BMSCs) and autologous platelet-rich plasma (PRP) in CPC scaffold for bone regeneration in minipigs for the first time. Twelve female adult Tibet minipigs (12-18 months old) were used. A cylindrical defect with 10 mm height and 8 mm diameter was prepared at the femoral condyle. Two bone defects were created in each minipig, one at each side of the femoral condyle. Three constructs were tested: (1) CPC scaffold (CPC control); (2) CPC seeded with BMSCs (CPC-BMSC); (3) CPC seeded with BMSCs and PRP (CPC-BMSC-PRP). Two time points were tested: 6 and 12 weeks (n = 4). Good integration of implant with surrounding tissues was observed in all groups. At 12 weeks, the CPC-BMSC-PRP group had significantly less residual CPC remaining in the defect than the CPC-BMSC group and the CPC control (p < 0.05). The residual CPC volume for the CPC-BMSC-PRP group was half that of the CPC control. New bone formation for CPC-BMSC-PRP was more than two-fold that of the CPC control (p < 0.05). CPC-BMSC-PRP had new blood vessel density that was nearly two-fold that of the CPC control (p < 0.05). In conclusion, CPC scaffold with autologous BMSC-PRP doubled the new bone regeneration and blood vessel density in minipigs compared with the CPC control. In the present study, the new macroporous CPC system with co-delivered BMSC-PRP has been shown to promote scaffold resorption and bone regeneration in large defects. Copyright © 2017 John Wiley & Sons, Ltd.

journal_name

J Tissue Eng Regen Med

journal_title

Journal of tissue engineering and regenerative medicine

authors

Qiu G,Shi Z,Xu HHK,Yang B,Weir MD,Li G,Song Y,Wang J,Hu K,Wang P,Zhao L

doi

10.1002/term.2416

subject

Has Abstract

pub_date

2018-02-01 00:00:00

pages

e937-e948

issue

eissn

1932-6254

issn

1932-7005

journal_volume

pub_type

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Bone regeneration in minipigs via calcium phosphate cement scaffold delivering autologous bone marrow mesenchymal stem cells and platelet-rich plasma.