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Updated: May 14, 2026
Murine Flexor Tendon Injury and Repair Surgery
Published on: September 19, 2016
Prevention of Tendon Adhesions by ERK2 Small Interfering RNAs
Hongjiang Ruan1, Shen Liu, Fengfeng Li
1Department of Orthopaedics, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, School of Medicine, 600 Yishan Road, Shanghai 200233, China. fancunyi888@hotmail.com.
Abstract:
Tendon adhesions are one of the most concerning complications after surgical repair of flexor tendon injury. Extracellular signal-regulated kinase (ERK) 2 plays crucial roles in fibroblast proliferation and collagen expression which contributes to the formation of tendon adhesions after flexor tendon surgery. Using a chicken model, we have examined the effects of a small interfering RNA (siRNA) targeting ERK2 delivered by a lentiviral system on tendon adhesion formation with an adhesion scoring system, histological assessment, and biomechanical evaluation. It was found that ERK2 siRNA effectively suppressed the increase of fibroblasts and the formation of tendon adhesions (p < 0.05 compared with the control group). Moreover, no statistically significant reduction in breaking force was detected between the ERK2 siRNA group and the control group. These results show that the lentiviral-mediated siRNA system is effective in preventing tendon adhesion formation but not to tendon healing, and may be used for tendon repair after confirmation and improvement by future detailed studies.
Insights
Small interfering RNA (siRNA) targeting extracellular signal-regulated kinase (ERK) 2 effectively reduced tendon adhesions after surgery in a chicken model. This approach shows promise for preventing adhesions without compromising tendon healing.
Area of Science:
- Orthopedic Surgery
- Molecular Biology
- Biomaterials Science
Background:
- Tendon adhesions are a significant complication following flexor tendon surgery.
- Extracellular signal-regulated kinase (ERK) 2 is implicated in fibroblast proliferation and collagen production, contributing to adhesion formation.
Purpose of the Study:
- To investigate the efficacy of lentiviral-mediated small interfering RNA (siRNA) targeting ERK2 in preventing tendon adhesions.
- To assess the impact of ERK2 inhibition on tendon healing and biomechanical properties.
Main Methods:
- A chicken model was utilized to study tendon adhesion formation.
- Lentiviral delivery of ERK2 siRNA was employed.
- Adhesion scoring, histological assessment, and biomechanical evaluation were performed.
Main Results:
- ERK2 siRNA significantly suppressed fibroblast proliferation and tendon adhesion formation (p < 0.05).
- No significant reduction in the breaking force of tendons was observed in the siRNA group compared to controls.
- The lentiviral-mediated siRNA system demonstrated effectiveness in preventing adhesions without impairing tendon healing.
Conclusions:
- Lentiviral-mediated ERK2 siRNA is a viable strategy for mitigating tendon adhesions post-surgery.
- This method shows potential for improving outcomes in tendon repair, pending further research and refinement.