陈声波　刘逸　智发朝　赵芯梅

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MAWBP在急性溃疡性结肠炎模型中的作用

陈声波刘逸智发朝赵芯梅

目的探讨MAWBP在溃疡性结肠炎急性模型中的作用。方法40只BALB/c小鼠随机分成4组，每组10只，分别为正常对照组、Mock组、MAWBP组和MAWD组；Mock、MAWBP和MAWD组饮用4%DSS制作急性溃疡性结肠炎模型，正常对照组饮用高压过的饮用水。造模第1天，正常对照组、Mock组、MAWBP组和MAWD组分别注射慢病毒稀释液、慢病毒空载体、含MAWBP基因慢病毒液、含MAWD基因慢病毒液。造模期间进行疾病活动指数评分；造模结束检测各组小鼠肠道MAWBP蛋白和mRNA表达水平，病理切片评估肠道炎症程度。结果与正常小鼠相比，急性溃疡性结肠炎模型小鼠MAWBP蛋白表达水平明显降低；与Mock组相比，MAWBP组MAWBP蛋白和mRNA表达水平明显升高；MAWBP组小鼠疾病活动指数评分和低于Mock组；病理切片显示MAWBP组肠道炎症水平低于Mock组。结论MAWBP对溃疡性结肠炎急性模型具有保护作用，可通过上调MAWBP表达改善溃疡性结肠炎病情。

MAWBP；溃疡性结肠炎；动物模型

【Abstract】Object To study the effect of MAWBP on acute colitis model in mice.Methods Forty BALB/c mice were assigned randomly into four groups（Normal Control，Mock，MAWBP and MAWD group）with 10 mice per group.Mock，MAWBP and MAWD group drank 4%DSS solution while Normal Control group received autoclaved drinking water.On the first day of the model，Normal Control，Mock，MAWBP and MAWD group received lentivirus diluents，lentivirus vector，lentivirus with MAWBP gene and lentivirus with MAWD gene respectively.Meanwhile，Disease Activity Index was evaluated.At the end of the model，the protein and mRNA expression of MAWBP were detected and histological colitis severity were determined in colonic tissue.Results Mice with acute colitis had a lower protein expression of MAWBP than healthy mice. Mice in MAWBP group had a higher protein and mRNA expression of MAWBP than mice in Mock group. Mice in MAWBP group had a lower score of Disease Activity Index than mice in Mock group.Mice in MAWBP group developed a less severe inflammation than mice in Mock group.Conclusion MAWBP has a protective effect on acute colitis model in mice and up-regulation of MAWBP alleviates ulcerative colitis.

【Key word】MAWBP；Ulcerative colitis；Animal model

炎症性肠病（inflammatory bowel disease，IBD）是一类原因不明，以肠道慢性非特异性炎症为特征的肠道疾病，主要包括溃疡性结肠炎（ulcerative colitis，UC）和克罗恩病（Crohn′s disease，CD）两个类型。病因不明，多与环境、遗传、感染、免疫等因素有关。UC被认为是一类具有高度癌变风险的非可控性炎症［1］，病程长，病变程度轻重不一，临床上常表现反复发作而治愈难度大。因此，寻找更加有效的治疗靶点有利于改变现有的治疗困境。我们前期研究发现，相对于正常人，MAWBP在UC患者肠黏膜中低表达，且与病情严重程度呈负相关［2］。……