Cortical perforation promotes bone regeneration by enhancing nerve growth factor secretion
Yao Jiao1, Yitong Liu1, Xiaoyan Li1
1Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China.
Biochemical and Biophysical Research Communications
|March 5, 2025
Summary
Cortical perforation enhances bone regeneration around grafts by increasing blood supply and stimulating osteogenesis. This process involves nerve growth factor (NGF) activating the JNK/c-Jun pathway, offering new therapeutic strategies for regenerative surgery.
Area of Science:
- Periodontal regenerative surgery
- Biomaterials science
- Tissue engineering
Background:
- Adequate blood supply is critical for bone graft success in periodontal regeneration.
- Cortical perforation is hypothesized to enhance bone regeneration by improving vascularization and cell migration.
- The precise molecular mechanisms by which corticotomy promotes bone regeneration are not fully understood.
Purpose of the Study:
- To investigate the effect of cortical perforation on osteogenesis around bone grafts in a rat model.
- To elucidate the role of nerve growth factor (NGF) in corticotomy-induced bone regeneration.
- To identify the molecular pathways involved in NGF-mediated osteogenesis.
Main Methods:
- Established a rat model to study cortical perforation's impact on bone graft osteogenesis.
- Utilized conditioned medium from ground alveolar bone to assess effects on periodontal ligament stem cells (PDLSCs) in vitro.
- Investigated the role of nerve growth factor (NGF) using exogenous NGF and inhibitors, and analyzed the JNK/c-Jun pathway.
Main Results:
- Cortical perforation significantly enhanced osteogenesis around local bone grafts.
- Tissue-conditioned medium promoted osteogenic differentiation of PDLSCs.
- Nerve growth factor (NGF) expression increased locally after corticotomy, and NGF was confirmed to be crucial for promoting osteogenesis via the JNK/c-Jun pathway.
Conclusions:
- Cortical perforation effectively promotes osteogenesis around bone grafts.
- Nerve growth factor (NGF) plays a key role in corticotomy-induced bone regeneration by activating the JNK/c-Jun pathway.
- Targeting NGF-mediated mechanisms presents a promising therapeutic avenue for enhancing bone augmentation in regenerative surgery.
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