普伐他汀抑制脂多糖诱导的人绒毛外滋养细胞微小RNA-155表达并改善滋养细胞功能  被引量:4

Pravastatin inhibits microRNA-155 expression and improves functions of lipopolysaccharide-treated human extravillous trophoblast cells

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作  者:王志尹 杨沐怿 段晓宇 刁振宇[3] 丁海林[3] 彭艳芳 雷祎 赵光锋[3] 刘丹 胡娅莉[1] 

机构地区:[1]南京医科大学鼓楼临床医学院妇产科,210029 [2]东南大学医学院妇产科,210009 [3]南京大学医学院附属鼓楼医院妇产科,210008

出  处:《中华围产医学杂志》2017年第10期705-711,共7页Chinese Journal of Perinatal Medicine

基  金:国家自然科学基金(81370724);江苏省临床医学中心建设项目(yxzxb2016004);南京市产科与遗传临床中心建设项目

摘  要:目的探讨普伐他汀对脂多糖诱导的人绒毛外滋养细胞(HTR-8/SVneo细胞)中微小RNA-155(microRNA-155,miR-155)表达及其对滋养细胞功能的影响。方法将体外培养HTR-8/SVneo细胞分成空白对照组、带绿色光蛋白的增强型质粒(enhanced plasmid with green fluorescent protein,pEGFP)-miR-155组(绿色荧光蛋白标记的miR-155质粒转染)、脂多糖组(脂多糖100 ng/ml)、miR-155抑制剂组+脂多糖,普伐他汀+脂多糖组(浓度分别为12.50、25.00、50.00、100.00 μg/ml普伐他汀预处理后,再加入100 ng/ml脂多糖)、普伐他汀+pEGFP-miR-155组(50.00 μg/ml普伐他汀预处理后再转染pEGFP-miR-155)。采用实时荧光定量聚合酶链反应检测各组miR-155的表达量、蛋白质印迹法检测各组AP-1亚基p-JunB和p-FosB蛋白的表达水平;检测细胞迁移、侵袭功能和凋亡情况。采用t检验进行统计学分析。结果(1)与空白对照组相比,pEGFP-miR-155组滋养细胞迁移距离较低[分别为(274.70±18.82)和(181.00±8.62)μm],穿膜细胞减少[(123.00±4.36)和(63.00±6.08)个],细胞凋亡率升高[分别为(5.40±0.68)%和(9.27±0.68)%](P值均〈0.05)。与脂多糖组相比,miR-155抑制剂+脂多糖组的迁移距离更长[(166.30±5.07)与(242.00±18.07) μm],穿膜细胞增多[(71.67±6.12)与(109.00±7.81)个],细胞凋亡率降低[(14.40±1.69)%与(6.23±0.44)%](P〈0.05)。(2)脂多糖组HTR-8/SVneo细胞miR-155的mRNA表达水平为1.65±0.07,明显高于空白对照组的0.79±0.12(P〈0.05)。12.50、25.00、50.00、100.00 μg/ml普伐他汀+脂多糖组的HTR-8/Svneo细胞中miR-155的mRNA表达水平分别为1.14±0.10、1.02±0.10、0.74±0.15和1.14±0.02,明显低于脂多糖组,其中以50.00 μg/ml普伐他汀降低程度最明显(P值均〈0.05)。(4)空白对照组、脂多糖组、50.00 μg/ml普伐他汀+脂多糖组的磷酸化JunB的蛋白表ObjectiveTo investigate the effects of pravastatin on the expression of microRNA-155 (miR-155) and the functions of lipopolysaccharide (LPS)-treated extravillous trophoblast cells.MethodsIn vitro cultured HTR-8/SVneo cells were divided into the following groups: control group, enhanced plasmid with green fluoscent protein (pEGFP)-miR-155 group (transfected with green fluorescent protein-tagged miR-155), LPS group (treated with 100 ng/mL of LPS), miR-155 inhibitor+LPS group, pravastatin+LPS group (treated with 100 ng/mL of LPS following pretreatment with 12.50, 25.00, 50.00 and 100.00 μg/ml of pravastatin), and pravastatin+pEGFP-miR-155 group (transfected with pEGFP-miR-155 following pretreatment with 50 μg/ml of pravastatin). Levels of miR-155 in HTR-8/SVneo cells treated with different strategies were measured by real-time polymerase chain reaction. Expression of phosphorylated JunB (p-JunB) and p-FosB proteins was analyzed by Western blotting. Migration, invasion and apoptosis of HTR-8/SVneo cells were also analyzed. All data were analyzed with t test.Results(1) Compared with the control group, HTR-8/SVneo cells in the pEGFP-miR-155 group were characterized by shorter migration distance [(274.70±18.82) vs (181.00±8.62) μm], less transmembrane cells [(123.00±4.36) vs (63.00±6.08)] and enhanced apoptosis [(5.40±0.68)% vs (9.27±0.68)%] (all P〈0.05). (2) Compared with the LPS group, the miR-155 inhibitor+LPS group showed longer migration distance of HTR-8/SVneo cells [(166.30±5.07) vs (242.00±18.07) μm, P〈0.05], more transmembrane cells [(71.67±6.12) vs (109.00±7.81), P〈0.05] and decreased cell apoptosis [(14.40±1.69)% vs (6.23±0.44)%, P〈0.05]. (3) Expression of miR-155 at mRNA level in the LPS group was increased as compared with that of the control group (1.65±0.07 vs 0.79±0.12, P〈0.05). Compared with the LPS group, pretreatment with 12.50, 25.00, 50.00 and 100.00 μg/ml of pra

关 键 词:普伐他汀 先兆子痫 滋养层 微RNAS 细胞运动 

分 类 号:R714.244[医药卫生—妇产科学]

 

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