靶向Dicer酶的小干扰RNA对人脑胶质瘤细胞生物学行为的影响  被引量:6

Effects of small interfering RNA targeting Dicer enzyme on the biological behavior of human glioma cells

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作  者:范月超[1] 张慧[1] 郑骏年[2] 梅鹏金[1] 陈晨[1] 苗发安[1] 雷霆[3] 

机构地区:[1]徐州医学院附属医院神经外二科,221006 [2]徐州医学院附属医院肿瘤科,221006 [3]华中科技大学同济医学院附属同济医院神经外科

出  处:《中华实验外科杂志》2013年第7期1475-1477,共3页Chinese Journal of Experimental Surgery

基  金:江苏省卫生厅科研基金资助项目(H201019)

摘  要:目的观察敲低Dicer酶的表达对人脑胶质瘤细胞U87、U251的生物学行为的影响。方法采用小干扰RNA(siRNA)技术敲低Dicer酶的表达,Westernblot检测U87、U251细胞转染小干扰RNA24h后Dicer酶表达;应用细胞计数试剂盒(CCK-8)法检测、Tranwell试验及明胶酶谱实验检测细胞增殖、侵袭及基质金属蛋白激酶[基质金属蛋白酶(MMP)-2、MMP-9]的活性。结果转染siRNA靶向Dicer酶后,Dicer酶较对照组降低68.0%(U87)和60.3%(U251)(P〈0.05)。两组细胞的增殖率分别明显高于相对应的对照组,且随时间的延长差距也随之增大(P〈0.05)。siRNA组细胞侵袭数(77.9±8.3)个(U87)和(81.0±7.9)个(U251)较阴性对照组(40.6±7.0)个(U87)和(35.8±6.5)个(U251)明显增多(P〈0.05)。siRNA组MMP-2较对照组活性增加(1.35±0.17)倍(U87)、(1.19±0.06)倍(U251)(P〈0.05);MMP-9较对照组活性增加(1.72±0.37)倍(U87)、(1.66±0.33)倍(U251)(P〈0.05)。结论敲低Dicer酶表达后,人胶质瘤细胞增殖能力增加,MMP-2、MMP-9活性增强,侵袭性增强。Objective To observe the effects of knocking down Dicer enzyme expression on the bi- ological behaviors of human glioma cells U87 and U251. Methods Using small interference RNA (siRNA) technology, Dicer enzyme expression was knocked down , Western blot detection U87 and U251 cells' Dicer enzyme expression after transfected with small interfering RNA 24 h ; application of cell counting kit-8 (CCK-8) assay, Tranwe]l test and gelatinase spectrum experiments to detect cell proliferation, invasion and matrix metalloproteinase [ matrix metalloproteinase (MMP) -2, MMP-9 ] activity. Results Transfected with siRNA targeting Dicer enzyme, Dicer enzyme compared with the control group decreased by 68.0% ( U87 ) and 60. 3% ( P 〈 O. 05 ) ( U251 ). Both cell proliferation rate was significantly higher than the cor- responding control group, and with time gap also increased ( P 〈 O. 05 ). number of cell invasion siRNA group 77.9_±8.3 (U87) and 81.0 ±7.9 (U251) compared with negative control group 40.6 -±7.0 ( U87 ) and 35.8 -± 6. 5 ( U251 ) increased significantly ( P 〈 0. 05 ). The siRNA set of MMP-2 activity in- creased compared with the control group ( 1.35 ± 0. 17) times ( U87), ( 1.19 ± 0. 06) times (U251) ( P 〈 0. 05 ) ; MMP-9 activity increased compared with the control group ( 1.72 ± 0. 37 ) times ( U87 ), (1.66 ±0.33) times (U251) (P〈0.05). Conclusion After dicer enzyme expression knockdown,hu- man glioma cell proliferation increased, MMP-2, MMP-9 activity was enhanced and invasive increased.

关 键 词:小干扰RNA DICER酶 胶质瘤 

分 类 号:R73[医药卫生—肿瘤]

 

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