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已发表论文
负载 TP-P1 的热敏水凝胶通过 TLR4/NF-κB 信号通路减轻小鼠类风湿关节炎模型的炎症反应
Authors Wang F, Hu Z, Yang J, Li C, Zhang W , Wang C, Yu S, Li J, Zhao W, Chen B, Zhu X
Received 25 June 2025
Accepted for publication 8 October 2025
Published 21 October 2025 Volume 2025:18 Pages 14535—14549
DOI https://doi.org/10.2147/JIR.S549625
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 4
Editor who approved publication: Dr Ujjwol Risal
Fengnan Wang,1,2 Zhongxiao Hu,1,2 Jing Yang,1,2 Chencheng Li,1,2 Weiguang Zhang,1,2 Chenxue Wang,1,2 Shuyi Yu,1,2 Jiaqian Li,1,2 Wenxuan Zhao,1,2 Biqing Chen,1 Xuejun Zhu1
1Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China; 2The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China
Correspondence: Biqing Chen, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China, Email yfy142@njucm.edu.cn Xuejun Zhu, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China, Email zhuxuejun@njucm.edu.cn
Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent inflammation, pain, and joint destruction, largely driven by inflammation and oxidative stress. This study explored the therapeutic potential of a thermosensitive hydrogel (TPTH) loaded with TP-P1, a derivative of triptolide, focusing on anti-inflammatory and antioxidant effects.
Methods: A collagen-induced arthritis (CIA) model was established by dual immunization with type II collagen and Freund’s adjuvant. Mice were randomized into control, model, dexamethasone (DEX), blank hydrogel, and TPTH groups. After 28 days of intra-articular treatment, arthritis severity was assessed by paw swelling, arthritis scores, and histopathology. Cytokines (IL-6, IL-1β, TNF-α) were measured by RT-qPCR and flow cytometry, oxidative stress markers (MDA, SOD, CAT, GSH) were determined, and TLR4/NF-κB expression was analyzed by Western blotting, immunohistochemistry, and RT-qPCR. Biosafety was evaluated via liver/kidney histology and plasma indices (ALT, AST, BUN, CRE).
Results: TPTH treatment markedly alleviated arthritis symptoms, reducing paw swelling and scores (p < 0.0001). It downregulated inflammatory cytokines, improved antioxidant status (SOD, CAT, GSH) and decreased MDA. TPTH also suppressed TLR4 and NF-κB expression, indicating modulation of inflammatory signaling. Importantly, no obvious hepatic or renal toxicity was observed.
Conclusion: TPTH significantly ameliorates inflammation and oxidative stress in CIA mice by modulating the TLR4/NF-κB pathway and shows promise as a safe and effective therapeutic strategy for RA.
Keywords: anti-inflammatory, antioxidant stress capacity, TP-P1-loaded thermosensitive hydrogel, rheumatoid arthritis
1Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China; 2The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China
Correspondence: Biqing Chen, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China, Email yfy142@njucm.edu.cn Xuejun Zhu, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210029, People’s Republic of China, Email zhuxuejun@njucm.edu.cn
Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent inflammation, pain, and joint destruction, largely driven by inflammation and oxidative stress. This study explored the therapeutic potential of a thermosensitive hydrogel (TPTH) loaded with TP-P1, a derivative of triptolide, focusing on anti-inflammatory and antioxidant effects.
Methods: A collagen-induced arthritis (CIA) model was established by dual immunization with type II collagen and Freund’s adjuvant. Mice were randomized into control, model, dexamethasone (DEX), blank hydrogel, and TPTH groups. After 28 days of intra-articular treatment, arthritis severity was assessed by paw swelling, arthritis scores, and histopathology. Cytokines (IL-6, IL-1β, TNF-α) were measured by RT-qPCR and flow cytometry, oxidative stress markers (MDA, SOD, CAT, GSH) were determined, and TLR4/NF-κB expression was analyzed by Western blotting, immunohistochemistry, and RT-qPCR. Biosafety was evaluated via liver/kidney histology and plasma indices (ALT, AST, BUN, CRE).
Results: TPTH treatment markedly alleviated arthritis symptoms, reducing paw swelling and scores (p < 0.0001). It downregulated inflammatory cytokines, improved antioxidant status (SOD, CAT, GSH) and decreased MDA. TPTH also suppressed TLR4 and NF-κB expression, indicating modulation of inflammatory signaling. Importantly, no obvious hepatic or renal toxicity was observed.
Conclusion: TPTH significantly ameliorates inflammation and oxidative stress in CIA mice by modulating the TLR4/NF-κB pathway and shows promise as a safe and effective therapeutic strategy for RA.
Keywords: anti-inflammatory, antioxidant stress capacity, TP-P1-loaded thermosensitive hydrogel, rheumatoid arthritis