QIAN Jiajia,XU Qi,XU Weimin,et al.Effect of Wenjing Tongluo Decoction (温经通络汤) on HMGB1/NF-κB Signaling Pathway in Knee Articular Cartilage Tissue of Knee Osteoarthritis Model Mice[J].Journal of Traditional Chinese Medicine,2023,64(09):939-947.
QIAN Jiajia,XU Qi,XU Weimin,et al.Effect of Wenjing Tongluo Decoction (温经通络汤) on HMGB1/NF-κB Signaling Pathway in Knee Articular Cartilage Tissue of Knee Osteoarthritis Model Mice[J].Journal of Traditional Chinese Medicine,2023,64(09):939-947.DOI: 10.13288/j.11-2166/r.2023.09.013.
Effect of Wenjing Tongluo Decoction (温经通络汤) on HMGB1/NF-κB Signaling Pathway in Knee Articular Cartilage Tissue of Knee Osteoarthritis Model Mice
(温经通络汤, WTD) in the treatment of knee osteoarthritis (KOA).
Methods
2
Thirty-two mice were randomly divided into sham operation group, model group, WTD low-dose group (Group WTD-L) and high-dose group (Group WTD-H), with eight mice in each group.Except for the Group S, the KOA model was established with anterior cruciate ligament transection (ACLT) method. Four weeks after operation, Group WTD-L and Group WTD-H were given 20 and 80 g/(kg·d) of WTD by gavage, respectively, while Group S and Group M were given 0.2 ml/10 g of normal saline by gavage, once a day for 4 weeks. The pathological morphology of the cartilage tissue of mice were evaluated through HE staining and safranin O-fast green (S-O) staining, and the pathological changes were scored according to the modified Mankin system. Protein expression of matrix metalloproteinase 13 (MMP13), collagen (COLⅡ), high mobility group box B1 (HMGB1), and nuclear factor κB (NF-κB) pathway in articular cartilage of mice were detected by Western blot. The mRNA expression of COLⅡ, MMP13 and NF-κB were detected by qPCR method. Inducible nitric oxide synthase (iNOS) expression in cartilage was observed by immunohistochemistry, and serum inflammatory factors prostaglandin E2 (PGE2),interleukin 6 (IL-6), and tumor necrosis factor α (TNF-α) were detected by ELISA.
Results
2
Compared to those in the sham operation group, the articular cartilage surface in the model group was damaged significantly with obvious defects of cartilage layer, and the modified Mankin score significantly increased; the protein expression of p-IκBα/IκBα, p-p65/p65, MMP13 and HMGB1 in the cartilage tissue, the mRNA expression of MMP13, NF-κB1 and NF-κB2, positive expression of iNOS cells, expression of serum inflammatory factors IL-6, PGE2 and TNF-α increased, while the protein and mRNA expression of COLⅡ significantly decreased (
P
<0.05 or
P
<0.01). Compared to those in the model group, the pathological morphology of cartilage tissues in Group WTD-L and Group WTD-H were improved, and the damage of articular cartilage surface was reduced; the modified Mankin score decreased, as well as the p-IκBα/IκBα, p-p65/p65, MMP13 and HMGB1 protein expression, MMP13 and NF-κB1 mRNA expression, serum inflammatory factors IL-6, PGE2 and TNF-α expression levels in cartilage tissue, and positive expression of iNOS cells, while the expression of COLⅡ protein increased (
P
<0.05 or
P
<0.01). Compared to those in the Group WTD-L, the modified Mankin score, p-IκBα/IκBαand MMP13 protein expression, MMP13, mRNA expression of NF-κB1 and NF-κB2, serum inflammatory factors IL-6, PGE2 And TNF-α expression in the Group WTD-H significantly decreased, while p-p65/p65 value increased (
P
<0.01).
Conclusion
2
WTD can significantly improve the pathological morphology of cartilage tissue in KOA mice and delay the progression of disease.Its mechanism may be related to the inhibition of HMGB1/NF-κB signaling pathway and the reduction of inflammatory responses.
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