4.7 Article

Novel tryptanthrin derivatives with benzenesulfonamide substituents: Design, synthesis, and anti-inflammatory evaluation

期刊

出版社

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2022.114956

关键词

Tryptanthrin derivatives; Anti-inflammatory; p38?; Adjuvant -induced arthritis

向作者/读者索取更多资源

In this study, two series of tryptanthrin derivatives with benzenesulfonamide substituents were designed and synthesized to discover new anti-inflammatory agents. Among them, compound 8j showed the best inhibitory activity on nitric oxide production, with no toxicity. Further evaluation demonstrated that 8j could reduce the levels of pro-inflammatory cytokines and inhibit the p38 MAPK signaling pathway. In vivo studies showed that 8j could ameliorate the degree of foot swelling and knee joint pathology in adjuvant-induced arthritis rats.
Herein, two series of tryptanthrin derivatives with benzenesulfonamide substituents were designed and syn-thesized to discover novel anti-inflammatory agents. The anti-inflammatory activities of all derivatives were screened by evaluating their inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.7 cells. Among them, compound 8j exhibited the best NO inhibitory activity (IC50 = 1.25 +/- 0.21 mu M), with no obvious toxicity. Further evaluation showed that 8j could also significantly reduce the levels of pro -inflammatory cytokines interleukin-18 (IL-18, IC50 = 8.48 +/- 0.23 mu M) and tumor necrosis factor-alpha (TNF-alpha, IC50 = 11.53 +/- 0.35 mu M) and downregulate the LPS-induced expression of iNOS and COX-2. Reverse docking of 8j suggested p38 alpha as the molecular target, which is a well-known crucial player in the p38 MAPK signaling pathway that controls the transcription of pro-inflammatory mediators. Cellular thermal shift assay showed that 8j effi-ciently stabilized p38 alpha in LPS-treated RAW264.7 cells. Western blot showed that inflammatory response was inhibited by 8j through inhibiting the phosphorylation of p38 alpha and MK2 in the p38 MAPK signaling pathway. Finally, In vivo studies showed that 8j could significantly ameliorate the degree of foot swelling and knee joint pathology in adjuvant-induced arthritis (AIA) rats and reduce levels of TNF-alpha and IL-18 in serum, achieving the effect of protecting synovial tissue and ameliorating arthritis. These findings suggested that 8j may be a promising compound for further development of anti-inflammatory agents.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据