WANG Hongqing,ZHANG Lijun,LIN Chuan,et al.Berberine improves ulcerative colitis in mice by inhibiting JAK2/STAT3 signal pathway[J].Academic Journal of Shanghai University of Traditional Chinese Medicine,2023,37(02):14-21.
WANG Hongqing,ZHANG Lijun,LIN Chuan,et al.Berberine improves ulcerative colitis in mice by inhibiting JAK2/STAT3 signal pathway[J].Academic Journal of Shanghai University of Traditional Chinese Medicine,2023,37(02):14-21. DOI: 10.16306/j.1008-861x.2023.02.003.
Berberine improves ulcerative colitis in mice by inhibiting JAK2/STAT3 signal pathway
Objective: To observe the intervention effect and possible mechanism of berbamine (BBM) on ulcerative colitis (UC) mice induced by dextran sulfate sodium (DSS).,Methods,2,①RAW264.7 macrophage inflammation model was used to investigate the effect of BBM on its cell viability, nitric oxide (NO) release, and the expression of tumor necrosis factor-α (,TNF,-,α,), interleukin-1β (,IL,-,1β,), ,IL,-,6, and inducible NO synthase (,iNOS,) inflammatory genes. ②Male C57BL/6 mice were randomly divided into normal group, model group, BBM group (50 mg/kg) and sulfasalazine (SASP) positive group (250 mg/kg), with 8 mice in each group. DSS induced UC mouse model was established, and corresponding drugs were given by gavage for 9 d consecutively. The body mass, spleen coefficient, colon length and appearance of the mice were recorded, disease activity index was evaluated, and pathological injury of colon was observed by HE staining. The expression of inflammatory genes ,TNF,-,α, IL,-,1 β, IL,-,6 ,and ,iNOS, in the colon of mice were detected by RT-qPCR and the expression of tight junction proteins Claudin-4 and Occludin as well as JAK2/STAT3 pathway proteins were detected by Western blot.,Results,2,①BBM had no effect on RAW264.7 cells viability, but could reduce the NO release (,P,<,0.05,,P,<,0.01) and the expression of inflammatory genes, TNF,-,α,, ,IL,-,1β,,, IL,-,6 ,and, iNOS, in a dose-dependent manner (,P,<,0.05,,P,<,0.01). ②BBM could improve the body mass loss and spleen coefficient increase of UC mice (,P,<,0.05), inhibit the shortening of the colon (,P,<,0.05), decrease the score of disease activity index and improve the pathological injury of colon in mice (,P,<,0.05). ③BBM could reduce the expression of inflammatory genes ,TNF,-,α,, ,IL,-,1 β, IL,-,6, and, iNOS, in the colon of mice (,P,<,0.05,,P,<,0.01). ④BBM could increase the expression of Claudin-4 and Occludin, and reduce the phosphorylation of JAK2 and STAT3 in the colon of mice (,P,<,0.05,,P,<,0.01).,Conclusion,2,BBM can improve UC in mice induced by DSS, its mechanism may be related to the inhibition of JAK2/STAT3 signal pathway and the reduction of inflammatory genes expression, thus enhancing the intestinal mucosal barrier function.
关键词
小檗胺溃疡性结肠炎JAK2/STAT3信号通路
Keywords
berbamineulcerative colitisJAK2/STAT3 signal pathway
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