扶正活血解毒方通过Wnt/β-catenin信号通路对口腔黏膜下纤维化的调控作用
2020-12-21谢赛飞谭劲郑玲朱可可周领航陈明
谢赛飞 谭劲 郑玲 朱可可 周领航 陈明



〔摘要〕 目的 探索扶正活血解毒方對槟榔碱提取物(areca nut extract, ANE)诱导的口腔黏膜下纤维化(oral submucous fibrosis, OSF)Wnt/β-catenin 信号通路的作用机制。方法 体外培养大鼠口腔黏膜上皮细胞(epithelial cell, EC),分为正常组、模型组、中药高/中/低剂量组和IWR-1组。以ANE为诱导剂,扶正活血解毒方含药血清为干预药物,以Wnt/β-catenin信号通路抑制剂IWR-1为阳性对照物,采用CCK8检测EC细胞增殖;PCR检测Wnt1、β-catenin、Axin、cylinD1基因的表达;Western blot检测Wnt1、β-catenin、Axin、cylinD1蛋白的表达。结果 与正常组相比,模型组EC增殖水平提高,Wnt1、β-catenin、cylinD1基因及蛋白表达增加,Axin基因及蛋白表达降低(P<0.05);与模型组相比,中药高、中剂量组EC增殖水平降低,Wnt1、β-catenin、cylinD1基因及蛋白表达降低,Axin基因及蛋白表达升高(P<0.05);与模型组相比,IWR-1组EC增殖水平降低,Wnt1、β-catenin、cylinD1基因及蛋白表达降低,Axin基因及蛋白表达升高(P<0.05)。结论 扶正活血解毒方可通过调控Wnt/β-catenin信号通路,抑制ANE刺激的EC增殖,逆转OSF癌前病变的形成。
〔关键词〕 口腔黏膜下纤维化;槟榔碱提取物;扶正活血解毒;Wnt/β-catenin信号通路
〔中图分类号〕R285.5 〔文献标志码〕A 〔文章编号〕doi:10.3969/j.issn.1674-070X.2020.11.001
〔Abstract〕 Objective To explore the mechanism of Fuzheng Huoxue Jiedu Prescription on Wnt/β-catenin signaling pathway induced by areca nut extract (ANE) in oral submucosal fibrosis. Methods The rat oral mucosa epithelial cells (ECs) cultured in vitro were assigned into a normal group, a model group, a Chinese materia medica high, medium and low dose group, a IWR-1 group. ANE was inducer, and Fuzheng Huoxue Jiedu Prescription-containing serum was intervention medicine. Wnt/β-catenin signaling pathway inhibitor IWR-1 was the positive control medicine. The CCK8 was used to test EC cell proliferation; PCR was used to detect Wnt1, β- catenin, Axin, cylinD1 gene expression; Western Blot was used to detect Wnt1, β-catenin, Axin, cylinD1 protein expression. Results Compared with the normal group, ECs proliferation levels of the model group increased, and Wnt1, β-catenin, cylinD1 gene and protein expression increased. Axin gene and protein expression decreased (P<0.05); Compared with model group, ECs proliferation levels of Chinese materia medica high and medium dose groups were reduced, and Wnt1, β-catenin, cylinD1 gene and protein expression were reduced. Axin gene and protein expression increased (P<0.05); Compared with the model group, ECs proliferation level of the IWR-1 group was reduced, and Wnt1, β-catenin, cylinD1 gene and protein expression were reduced. Axin gene and protein expression increased (P<0.05). Conclusion Fuzheng Huoxue Jiedu Prescription can inhibit the proliferation of EC cells stimulated by ANE, and reverse the formation of OSF precancerous lesions through regulating Wnt/β-catenin signaling pathway.
〔Keywords〕 oral submucosal fibrosis; areca nut extract; Fuzheng Huoxue Jiedu; Wnt/β-catenin signal pathway
口腔黏膜下纤维化或称口腔黏膜下纤维性变(oral submucous fibrosis, OSF)是一种口腔黏膜潜在恶性疾病[1-2]。其癌变率高达7%,WHO将OSF列为癌前状态[3]。流行病学调查表明,咀嚼槟榔是OSF主要的致病因素,但癌变机制尚不清楚,可能与槟榔的致癌成分槟榔碱、细胞因子、创伤及细胞免疫等关系密切[4-5],尤其认为某些细胞因子参与了OSF的癌变过程,其中以Wnt与TGF-β1介导的信号通路最具代表性[6-8]。如何阻断TGF-β与Wnt信号通路细胞因子间的联系,将成为防治OSF癌变的关键。前期研究发现扶正活血解毒中药通过调控TGF-β1/Smads信号转导通路能具有抑制槟榔碱提取物(areca nut extract, ANE)刺激的EC细胞增殖的作用[9-11]。本研究将从Wnt/β-catenin信号转导通路的角度探讨扶正活血解毒方对OSF癌前病变的作用机制,为临床OSF癌变的防治提供新的实验依据。
1 材料与方法
1.1 材料
1.1.1 实验细胞 口腔黏膜上皮细胞(epithelial cell, EC)购自于中国上海赛百慷生物技术股份有限公司。……
