J Allergy Clin Immunol:研究确定ANO1在嗜酸粒细胞性食管炎中的治疗作用

2020-11-13 MedSci原创 MedSci原创

嗜酸粒细胞性食管炎(EoE)的病理特点是富含嗜酸粒细胞的炎症、基底区增生(BZH)和细胞间扩张,而驱动该病病理表现的基本过程尚未明了。本研究旨在研究钙激活的氯化物通道ANO1(ANO1)在食管增生和E

嗜酸粒细胞性食管炎(EoE)的病理特点是富含嗜酸粒细胞的炎症、基底区增生(BZH)和细胞间扩张,而驱动该病病理表现的基本过程尚未明了。本研究旨在研究钙激活的氯化物通道ANO1(ANO1)在食管增生和EoE的组织病理特征中的作用,研究结果已在线发表于J Allergy Clin Immunol
研究人员检查了来自EoE患者和EoE小鼠食管活检样本中ANO1的mRNA和蛋白表达。研究人员对体外食管上皮三维模型系统(EPC2-ALI)和小鼠EoE模型进行了分子和细胞分析及离子转运试验,以确定ANO1的表达和功能与EoE患者食管上皮增生之间的关系。
 
结果显示,这些食管活检样本中ANO1的表达增加。ANO1在食管基底区内表达,表达量与疾病严重程度(嗜酸性粒细胞/高功率场)和BZH呈正相关。体外食管上皮三维模型系统揭示了ANO1在IL-13刺激后发生染色质修饰并迅速上调表达,ANO1是食管上皮内IL-13诱导的Cl-运输机制的主要顶端,丧失ANO1依赖的Cl-运输可使食管上皮增生消退。从机制上看,ANO1依赖性调节基底细胞增殖与TP63表达和磷酸化的环蛋白依赖性激酶2水平的调节有关。
综上所述,这些数据确定了ANO1在EoE患者食管细胞增殖和BZH中的功能作用,并为药理学干预EoE患者ANO1功能提供了依据。
 
原始出处:
 
Simone Vanoni, Chang Zeng, et al., Identification of anoctamin 1 (ANO1) as a key driver of esophageal epithelial proliferation in eosinophilic esophagitis. J Allergy Clin Immunol. 2020 Jan;145(1):239-254.e2. doi: 10.1016/j.jaci.2019.07.049.

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    2020-11-15 膀胱癌
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    2020-11-15 zhouqu_8
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