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Updated: Mar 13, 2026
A Mouse Distraction Osteogenesis Model
Published on: November 14, 2018
CKIP-1 silencing promotes new bone formation in rat mandibular distraction osteogenesis
Zi-Chao Zhou1, Lei Che2, Liang Kong3
1First Cadet Brigade, Fourth Military Medical University, Xi'an, China.
Objective:
This study investigated the effects and possible molecular mechanism of casein kinase-2 interacting protein-1 (CKIP-1) silencing on bone regeneration during rat mandibular distraction osteogenesis (DO).
Study Design:
CKIP-1 silencing by chitosan/si-CKIP-1 was employed and analyzed both in rat mandibular DO models in vivo and in cultured rat mandible bone marrow stromal cells (BMSCs) in vitro.
Results:
Gross observation, micro-computed tomography analysis, and hematoxylin and eosin (H&E) staining revealed that new bone formation in the distraction gap of the chitosan/si-CKIP-treated group was better compared with the chitosan/si-NC and phosphate buffered saline-treated groups in both quantity and quality. Proliferation assay, flow cytometry, and alizarin red staining indicated that CKIP-1 silencing significantly inhibited apoptosis, but promoted osteogenic differentiation of cultured BMSCs. Additionally, CKIP-1 silencing significantly promoted the expression of Wnt3 a, β-catenin, and osteocalcin both in new bone formation of DO models in vivo and in the osteogenic differentiation process of BMSCs in vitro.
Conclusions:
Promotion of bone formation after CKIP-1 silencing in rat mandibular distraction osteogenesis appears to be mediated through the Wnt3 a/β-catenin signaling pathway.
Insights
Silencing casein kinase-2 interacting protein-1 (CKIP-1) enhances bone regeneration in rat mandibular distraction osteogenesis by promoting cell growth and activating the Wnt3a/β-catenin pathway.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Orthopedic Surgery
Background:
- Distraction osteogenesis (DO) is crucial for bone defect reconstruction.
- Understanding molecular mechanisms regulating bone regeneration is vital for improving DO outcomes.
Purpose of the Study:
- To investigate the role of casein kinase-2 interacting protein-1 (CKIP-1) in mandibular distraction osteogenesis.
- To elucidate the molecular mechanisms underlying CKIP-1's effects on bone regeneration.
Main Methods:
- CKIP-1 silencing was achieved using chitosan/si-CKIP-1 in rat mandibular DO models (in vivo) and bone marrow stromal cells (BMSCs) (in vitro).
- Evaluated new bone formation via gross observation, micro-CT, and H&E staining.
- Assessed BMSC proliferation, apoptosis, and osteogenic differentiation using proliferation assays, flow cytometry, and alizarin red staining.
Main Results:
- CKIP-1 silencing significantly improved both the quantity and quality of new bone formation in rat mandibular DO.
- CKIP-1 silencing inhibited apoptosis and promoted osteogenic differentiation in BMSCs.
- CKIP-1 silencing upregulated Wnt3a, β-catenin, and osteocalcin expression in vivo and in vitro.
Conclusions:
- CKIP-1 silencing promotes bone formation in rat mandibular distraction osteogenesis.
- The mechanism involves the activation of the Wnt3a/β-catenin signaling pathway.
