目的:研究丁酸钠、曲古抑菌素A(trichostatin A,TSA)及腺病毒E1A相关的300 kD蛋白(adenoviral E1A binding protein of 300 kD,P300)介导的组蛋白乙酰化在人非小细胞肺癌A549细胞及人支气管上皮BEAS-2B细胞中对哮喘易感的解整合素金属...目的:研究丁酸钠、曲古抑菌素A(trichostatin A,TSA)及腺病毒E1A相关的300 kD蛋白(adenoviral E1A binding protein of 300 kD,P300)介导的组蛋白乙酰化在人非小细胞肺癌A549细胞及人支气管上皮BEAS-2B细胞中对哮喘易感的解整合素金属蛋白酶33(a disintegrin and metalloproteinase 33,ADAM33)基因表达的影响。方法:将A549细胞及BEAS-2B细胞分别分为丁酸钠对照组(双蒸水处理)和1、2.5、5 mmol/L丁酸钠组,TSA对照组(0.1%二甲基亚砜处理)和0.2、0.4、0.8μmol/L TSA组,按照组别分别予以相应处理;另将BEAS-2B细胞分为对照组(转染P300突变质粒)和P300组(转染P300表达质粒);采用双荧光素酶报告基因法分析ADAM33启动子活性的变化,实时荧光定量PCR(quantitative real time-PCR,qRT-PCR)检测ADAM33 mRNA表达,蛋白质印迹法检测ADAM33蛋白表达。结果:在人非小细胞肺癌A549细胞中,与对照组相比,1 mmol/L丁酸钠组及0.2μmol/L TSA组ADAM33基因启动子活性明显降低(P<0.01);在BEAS-2B细胞中,与对照组相比,1 mmol/L丁酸钠组及0.2μmol/L TSA组ADAM33基因启动子活性、mRNA及蛋白相对表达水平明显降低(P<0.05或P<0.01)。加大丁酸钠、TSA药物浓度,ADAM33表达无显著差异。在人支气管上皮BEAS-2B细胞中,与对照组相比,P300组ADAM33启动子活性、mRNA和蛋白相对表达水平明显降低(P<0.05)。结论:丁酸钠、TSA通过组蛋白乙酰化降低人非小细胞肺癌A549细胞和人支气管上皮BEAS-2B细胞中ADAM33表达,P300通过组蛋白乙酰化降低人支气管上皮BEAS-2B细胞中ADAM33表达。展开更多
基金financially supported by the Mitrphol group, the Vidyasirimedhi Institute of Science and Technologythe Srimedhi royal scholarship from HRH Princess Maha Chakri Sirindhorn+3 种基金the National Research Council of Thailand (Mid-career Scholar Research 2023)funded by the National Research Council of Thailand (NRCT) and Vidyasirimedhi Institute of Science and Technology: VISTEC (N42A660307)financial support from Thailand Science Research and Innovation (TSRI, FRB660004/0457)funding support from the NSRF via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (B39G660027)。
