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IFN-α-2b Reduces Postoperative Arthrofibrosis in Rats by Inhibiting Fibroblast Proliferation and Migration through
Zhendong Liu1,2, Zhehao Fan1, Rui Wang2
1Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China.
Objective:
To investigate the effect of IFN-α-2b in preventing postoperative arthrofibrosis in rats, its antiproliferation effect on fibroblasts in vitro, and its molecular mechanism.
Methods:
The rat model of arthrofibrosis was established and treated with different concentrations of drugs. Knee specimens were collected for histological and immunohistochemical staining to observe the effect of IFN-α-2b on arthrofibrosis in rats. The biological information was further mined according to the database data, and the possible regulatory mechanism of IFN-α-2b on fibroblasts was analyzed. The inhibitory effect of IFN-α-2b on fibroblast proliferation and migration in vitro was detected by cell counting kit-8 (CCK-8), immunofluorescence analysis, cell cycle test, EdU assay, wound healing test, and Transwell method, and the analysis results were verified by Western blotting method.
Results:
The test results of rat knee joint specimens showed that IFN-α-2b significantly inhibited the degree of fibrosis after knee joint surgery, the number of fibroblasts in the operation area was less than that of the control group, and the expression of collagen and proliferation-related proteins decreased. In vitro experimental results show that IFN-α-2b can inhibit the proliferation and migration of fibroblasts. According to the results of database analysis, it is suggested that the STAT1/P21 pathway may be involved, and it has been verified and confirmed by Western blotting and other related methods.
Conclusion:
IFN-α-2b can reduce surgery-induced arthrofibrosis by inhibiting fibroblast proliferation and migration, which may be related to the regulation of STAT1/p21 signaling pathway.
Insights
Interferon alfa-2b (IFN-α-2b) effectively prevents arthrofibrosis after knee surgery in rats by inhibiting fibroblast proliferation and migration. This therapeutic effect may involve the STAT1/p21 signaling pathway.
Area of Science:
- Orthopedics
- Immunology
- Cell Biology
Background:
- Postoperative arthrofibrosis is a significant complication following knee surgery.
- Fibroblast proliferation and migration are key contributors to scar tissue formation and joint stiffness.
Purpose of the Study:
- To evaluate the efficacy of Interferon alfa-2b (IFN-α-2b) in preventing arthrofibrosis in a rat model.
- To investigate the in vitro anti-proliferative effects of IFN-α-2b on fibroblasts.
- To elucidate the molecular mechanisms underlying IFN-α-2b's action.
Main Methods:
- Establishment of a rat model for post-surgical arthrofibrosis.
- Histological and immunohistochemical analysis of knee joint tissues.
- In vitro assays including CCK-8, EdU, wound healing, and Transwell migration assays.
- Western blotting and database analysis to explore molecular pathways.
Main Results:
- IFN-α-2b treatment significantly reduced arthrofibrosis in rats, decreasing fibroblast numbers and collagen expression.
- In vitro studies confirmed that IFN-α-2b inhibits fibroblast proliferation and migration.
- Database analysis and experimental validation suggest the involvement of the STAT1/p21 signaling pathway.
Conclusions:
- IFN-α-2b demonstrates potential as a therapeutic agent for preventing surgery-induced arthrofibrosis.
- The mechanism of action involves the inhibition of fibroblast activity.
- Regulation of the STAT1/p21 signaling pathway is implicated in IFN-α-2b's anti-arthrofibrotic effects.
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