6-姜烯酚对溃疡性结肠炎小鼠结肠上皮细胞Notch信号通路的影响

doi:10.12047/j.cjap.5889.2020.020

摘要/Abstract

摘要： 目的:观察6-姜烯酚对溃疡性结肠炎小鼠结肠上皮细胞Notch信号通路的调控作用。方法:清洁级昆明小鼠40只随机分为正常组(10只)和造模组(30只),造模组采用2%葡聚糖硫酸钠(DSS)自由饮用诱导溃疡性结肠炎模型,造模15 d后分为模型组,6-姜烯酚组,阳性对照组,每组10只。正常组、模型组灌胃生理盐水,6-姜烯酚组采用6-姜烯酚100 mg/(kg·d)灌胃,阳性对照组采用柳氮磺吡啶100 mg/(kg·d)灌胃,给药20 d后处死,观察小鼠结肠病理组织学改变,免疫荧光双标法检测结肠上皮细胞Hes-1、Math-1蛋白的表达,RT-PCR法检测结肠上皮组织Notch-1、Hes-1、Math-1 mRNA的表达,Western blot法检测结肠上皮组织Notch-1、Hes-1、Math-1蛋白的表达。结果:与正常组相比,模型组小鼠结肠上皮组织Notch-1、Hes-1蛋白和mRNA相对表达量显著升高( P＜0.01), Math-1蛋白和mRNA相对表达量显著降低( P＜0.01);与模型组比较,6-姜烯酚组、柳氮磺吡啶组小鼠结肠上皮组织Notch-1、Hes-1蛋白和mRNA相对表达量显著降低( P＜0.01), Math-1蛋白和mRNA相对表达量显著升高( P＜0.01) 。结论:6-姜烯酚能够抑制Notch通路的过度活化,调节结肠上皮吸收细胞系和分泌细胞系之间分化的平衡,修复受损结肠粘膜组织。

关键词: 溃疡性结肠炎, 6-姜烯酚, 结肠上皮细胞, Notch信号通路, 小鼠

Abstract: Objective: To observe the regulatory effect of 6-Shogaol on Notch signal pathway in colonic epithelial cells of mice with ulcerative colitis. Methods: Forty Kunming mice were randomly divided into normal group (n=10) and model group (n=30). The model of ulcerative colitis was induced by free drinking of 2% dextran sulfate sodium salt(DSS). After 15 days, the mice were divided into model group, 6-gingerenol group and positive control group with 10 mice in each group. Normal group and model group were treated with normal saline, 6-gingerenol group was treated with 6-Shogaol 100 mg/(kg·d), positive control group was treated with sulfasalazine 100 mg/(kg·d), for 20 days. The histopathological changes of colon were observed, and the expressions of Hes-1 and Math-1protein in colonic epithelial cells were detected by immunofluorescence double labeling method. The expressions of Notch-1, Hes-1 and Math-1 mRNA in colonic epithelial tissue were detected by RT-PCR. The expressions of Notch-1, Hes-1 and Math-1 protein in colonic epithelial tissue was detected by Western blot.Results: Compared with the normal group, the expression of Notch-1 and Hes-1 protein and the relative expression of mRNA in colonic epithelium of model group were significantly increased (P＜0.01), while the relative expressions of Math-1 mRNA and protein were decreased significantly (P＜0.01). Compared with the model group, the expressions of Notch-1 and Hes-1 protein and the relative expression of mRNA in colonic epithelium of 6-Shogaol group and sulfasalazine group were decreased significantly(P＜0.01), while the relative expressions of Math-1 mRNA and protein were increased significantly(P＜0.01).Conclusion: 6-Shogaol can inhibit the over activation of Notch pathway and regulate the balance of differentiation between colonic epithelialabsorptive cell line and secretory cell line and repair damaged mucosal tissue.

Key words: ulcerative colitis, 6-Shogaol, colonic epithelial cells, Notch signaling pathway, mice

惠毅, 闫曙光, 王倩, 李京涛, 魏海梁, 单宇鹏. 6-姜烯酚对溃疡性结肠炎小鼠结肠上皮细胞Notch信号通路的影响[J]. 中国应用生理学杂志, 2020, 36(1): 90-93.

HUI Yi, YAN Shu-guang, WANG Qian, LI Jing-tao, WEI Hai-liang, SHAN Yu-peng. Effects of 6-Shogaol on Notch signaling pathway in colonic epithelial cells of ulcerative colitis mice[J]. CJAP, 2020, 36(1): 90-93.

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