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Bone marrow mesenchymal stem cells with low dose bone morphogenetic protein 2 enhances scaffold‐based spinal fusion in a porcine model
- Source :
- Journal of Tissue Engineering and Regenerative Medicine. 16:63-75
- Publication Year :
- 2021
- Publisher :
- Hindawi Limited, 2021.
-
Abstract
- High doses BMP-2 have resulted in a series of complications in spinal fusion. We previously established a polyelectrolyte complex (PEC) carrier system that reduces the therapeutic dose of BMP-2 in both rodent and porcine spinal fusion models. This study aimed to evaluate the safety and efficacy of the combination of bone marrow mesenchymal stem cells (BMSCs) and low dose BMP-2 delivered by PEC for bone regeneration in a porcine model of anterior lumbar interbody spinal fusion (ALIF) application. Six Yorkshire pigs underwent a tri-segmental (L2/L3; L3/L4; L4/L5) ALIF in four groups, namely: (1) BMSCs + 25 μg BMP-2/PEC (n = 9), (2) 25 μg BMP-2/PEC (n = 3), (3) BMSCs (n = 3), and (4) 50 μg BMP-2/absorbable collagen sponge (n = 3). Fusion outcomes were evaluated by radiography, biomechanical testing, and histological analysis after 12 weeks. Mean radiographic scores at 12 weeks were 2.7, 2.0, 1.0, and 1.0 for Groups 1 to 4, respectively. µ-CT scanning, biomechanical evaluation, and histological analysis demonstrated solid fusion and successful bone regeneration in Group 1. In contrast, Group 2 showed inferior quality and slow rate of fusion, and Groups 3 and 4 failed to fuse any of the interbody spaces. There was no obvious evidence of seroma formation, implant rejection, or any other complications in all groups. The results suggest that the combination of BMSCs and low dose BMP-2/PEC could further lower down the effective dose of the BMP-2 and be used as a bone graft substitute in the large animal ALIF model. This article is protected by copyright. All rights reserved.
- Subjects :
- medicine.medical_specialty
Bone Regeneration
Swine
medicine.medical_treatment
Biomedical Engineering
Urology
Bone Morphogenetic Protein 2
Medicine (miscellaneous)
Bone morphogenetic protein 2
Biomaterials
Lumbar
Therapeutic index
Transforming Growth Factor beta
medicine
Animals
Bone regeneration
business.industry
Mesenchymal Stem Cells
medicine.disease
Effective dose (pharmacology)
Spinal Fusion
Seroma
Spinal fusion
Models, Animal
Implant
business
Subjects
Details
- ISSN :
- 19327005 and 19326254
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Journal of Tissue Engineering and Regenerative Medicine
- Accession number :
- edsair.doi.dedup.....52c6c2ea49d4187134d75e1346e972ee