基础研究
Copyright ©The Author(s) 2011.
世界华人消化杂志. 2011-04-08; 19(10): 1015-1021
在线出版 2011-04-08. doi: 10.11569/wcjd.v19.i10.1015
表1 IGF-Ⅱ miRNA Oligo序列及阴性序列
名称 寡聚核苷酸单链DNA序列
MR122-1F: 5'-TGCTGCAGCAATGCAGCACGAGGCGAGTTTTGGCCACTGACTGACTCGCCTCGCTGCATTGCTG-3'
R: 5'-CCTGCAGCAATGCAGCGAGGCGAGTCAGTCAGTGGCCAAAACTCGCCTCGTGCTGCATTGCTGC-3'
MR122-2F: 5'-TGCTGTAAGCAGCAATGCAGCACGAGGTTTTGGCCACTGACTGACCTCGTGCTATTGCTGCTTA-3'
R: 5'-CCTGTAAGCAGCAATAGCACGAGGTCAGTCAGTGGCCAAAACCTCGTGCTGCATTGCTGCTTAC-3'
MR122-3F: 5'-TGCTGTGCGACGGCTCACACGGCTTGGTTTTGGCCACTGACTGACCAAGCCGTGAGCCGTCGCA-3'
R: 5'-CCTGTGCGACGGCTCACGGCTTGGTCAGTCAGTGGCCAAAACCAAGCCGTGTGAGCCGTCGCAC-3'
MR122-4F: 5'-TGCTGTCAACGATGCCACGGCTGCGAGTTTTGGCCACTGACTGACTCGCAGCCGGCATCGTTGA-3'
R: 5'-CCTGTCAACGATGCCGGCTGCGAGTCAGTCAGTGGCCAAAACTCGCAGCCGTGGCATCGTTGAC-3'
阴性F: 5'-TGCTGAAATGTACTGCGCGTGGAGACGTTTTGGCCATGACTGACGTCTCCACGCAGTACATTT-3'
R: 5'-CCTGAAATGTACTGCGTGGAGACGTCAGTCAGTGGCCAAAACGTCTCCACGCGCAGTACATTTC-3'
表2 构建的4种干扰载体对HepG2细胞干扰效率比较
分组IGF-ⅡCt值ΔCtΔΔCt2ΔΔCt沉默效率(1-2ΔΔCt)
MR-IGF-Ⅱ-1组28.42±0.1917.700.580.670.33
MR-IGF-Ⅱ-2组28.09±0.2617.920.800.570.43
MR-IGF-Ⅱ-3组27.23±0.2216.98-0.141.100.00
MR-IGF-Ⅱ-4组27.60±0.1317.170.050.970.03
阴性组26.74±0.1317.120.001.000.00
表3 MR-IGF-Ⅱ-2干扰载体转染HepG2细胞IGF-Ⅱ基因的沉默效率 (mean±SD)
分组GAPDH CtIGF-II CtΔCtΔΔCt2ΔΔCt沉默效率(1-2ΔΔCt)
24 h
正常组10.07±0.1220.97±0.1210.90
阴性组9.97±0.1220.90±0.1710.930.030.9790.02
干扰组9.87±0.1221.37±0.3811.500.600.6590.34
48 h
正常组10.93±0.1525.43±0.7214.50
阴性组10.83±0.1225.35±0.5014.520.020.9860.01
干扰组10.50±0.3525.83±0.2115.330.830.5620.44
72 h
正常组9.73±0.1523.47±0.4613.74
阴性组9.67±0.0623.43±0.2313.760.020.9860.01
干扰组9.70±0.1024.23±0.2514.530.790.5780.42
表4 miRNA干扰质粒对肝癌细胞IGF-Ⅱ蛋白表达的影响 (mean±SD, n = 3)
分组IGF-Ⅱ(mg/g总蛋白)q
正常组113.23±4.66
阴性组102.60±4.234.0949
干扰组
24 h73.83±3.83b15.6483
48 h64.34±4.42b19.4108
72 h63.88±4.54b19.5837

引文著录: 姚宁华, 姚登福, 钱静, 董志珍, 邱历伟, 蔚丹丹. miRNA干扰质粒的构建及其对肝癌HepG2细胞IGF-Ⅱ表达的抑制作用. 世界华人消化杂志 2011; 19(10): 1015-1021