临床肿瘤学杂志
臨床腫瘤學雜誌
림상종류학잡지
CHINESE CLINICAL ONCOLOGY
2014年
4期
289-293
,共5页
徐磊%蒋峰%杨欣%笪良山%钱亦淳%王洁%尹荣%许林
徐磊%蔣峰%楊訢%笪良山%錢亦淳%王潔%尹榮%許林
서뢰%장봉%양흔%달량산%전역순%왕길%윤영%허림
miR-203%肺肿瘤%Bmi-1%转移%侵袭
miR-203%肺腫瘤%Bmi-1%轉移%侵襲
miR-203%폐종류%Bmi-1%전이%침습
miR-203%Lung neoplasms%Bmi-1%Migration%Invasion
目的:探讨miR-203在肺腺癌中的表达,并分析其与肺腺癌细胞侵袭转移的关系及其分子机制。方法实时定量PCR检测40例肺腺癌患者肿瘤组织中miR-203的相对表达水平及其与临床病理特征之间的关系;实时定量PCR检测H1650、A549、H1975、SPC-A-1肺腺癌细胞株中miR-203表达水平;生物信息学软件预测miR-203潜在的靶基因;脂质体2000介导miR-203模拟物、Bmi-1基因或Bmi-1 siRNA转染H1975细胞株;Western blotting检测Bmi-1蛋白水平;双荧光素酶报告基因验证miR-203是否作用于Bmi-1 mRNA的3’ UTR区预测靶位;Transwell小室侵袭实验检测H1975细胞株的侵袭转移能力。结果40例肺腺癌组织中miR-203的相对表达量为0?065±0?013;肺腺癌miR-203表达与淋巴结转移有关,而与其他临床病理参数均无关;miR-203在肺腺癌细胞株H1650、A549、H1975、SPC-A-1中的相对表达量分别为0?280±0?102、0?308±0?168、0?167±0?073和0?287±0?096。生物信息学软件预测Bmi-1是miR-203的潜在靶基因;过表达miR-203可明显降低Bmi-1蛋白表达水平;双荧光素酶报告基因检测证明miR-203可作用于Bmi-1基因mRNA的3’ UTR区预测靶位。过表达miR-203+Bmi-1 siRNA可显著抑制肺腺癌细胞株H1975的侵袭迁移能力;在miR-203过表达的H1975细胞株中同时过表达Bmi-1可恢复其侵袭能力。结论 miR-203可通过下调Bmi-1基因表达抑制H1975肺腺癌细胞株的侵袭转移,是一种潜在抑制转移的miRNA分子。
目的:探討miR-203在肺腺癌中的錶達,併分析其與肺腺癌細胞侵襲轉移的關繫及其分子機製。方法實時定量PCR檢測40例肺腺癌患者腫瘤組織中miR-203的相對錶達水平及其與臨床病理特徵之間的關繫;實時定量PCR檢測H1650、A549、H1975、SPC-A-1肺腺癌細胞株中miR-203錶達水平;生物信息學軟件預測miR-203潛在的靶基因;脂質體2000介導miR-203模擬物、Bmi-1基因或Bmi-1 siRNA轉染H1975細胞株;Western blotting檢測Bmi-1蛋白水平;雙熒光素酶報告基因驗證miR-203是否作用于Bmi-1 mRNA的3’ UTR區預測靶位;Transwell小室侵襲實驗檢測H1975細胞株的侵襲轉移能力。結果40例肺腺癌組織中miR-203的相對錶達量為0?065±0?013;肺腺癌miR-203錶達與淋巴結轉移有關,而與其他臨床病理參數均無關;miR-203在肺腺癌細胞株H1650、A549、H1975、SPC-A-1中的相對錶達量分彆為0?280±0?102、0?308±0?168、0?167±0?073和0?287±0?096。生物信息學軟件預測Bmi-1是miR-203的潛在靶基因;過錶達miR-203可明顯降低Bmi-1蛋白錶達水平;雙熒光素酶報告基因檢測證明miR-203可作用于Bmi-1基因mRNA的3’ UTR區預測靶位。過錶達miR-203+Bmi-1 siRNA可顯著抑製肺腺癌細胞株H1975的侵襲遷移能力;在miR-203過錶達的H1975細胞株中同時過錶達Bmi-1可恢複其侵襲能力。結論 miR-203可通過下調Bmi-1基因錶達抑製H1975肺腺癌細胞株的侵襲轉移,是一種潛在抑製轉移的miRNA分子。
목적:탐토miR-203재폐선암중적표체,병분석기여폐선암세포침습전이적관계급기분자궤제。방법실시정량PCR검측40례폐선암환자종류조직중miR-203적상대표체수평급기여림상병리특정지간적관계;실시정량PCR검측H1650、A549、H1975、SPC-A-1폐선암세포주중miR-203표체수평;생물신식학연건예측miR-203잠재적파기인;지질체2000개도miR-203모의물、Bmi-1기인혹Bmi-1 siRNA전염H1975세포주;Western blotting검측Bmi-1단백수평;쌍형광소매보고기인험증miR-203시부작용우Bmi-1 mRNA적3’ UTR구예측파위;Transwell소실침습실험검측H1975세포주적침습전이능력。결과40례폐선암조직중miR-203적상대표체량위0?065±0?013;폐선암miR-203표체여림파결전이유관,이여기타림상병리삼수균무관;miR-203재폐선암세포주H1650、A549、H1975、SPC-A-1중적상대표체량분별위0?280±0?102、0?308±0?168、0?167±0?073화0?287±0?096。생물신식학연건예측Bmi-1시miR-203적잠재파기인;과표체miR-203가명현강저Bmi-1단백표체수평;쌍형광소매보고기인검측증명miR-203가작용우Bmi-1기인mRNA적3’ UTR구예측파위。과표체miR-203+Bmi-1 siRNA가현저억제폐선암세포주H1975적침습천이능력;재miR-203과표체적H1975세포주중동시과표체Bmi-1가회복기침습능력。결론 miR-203가통과하조Bmi-1기인표체억제H1975폐선암세포주적침습전이,시일충잠재억제전이적miRNA분자。
Objective To investigate the expression of miR-203 in lung adenocarcinoma and analyze the relationship between miR-203 and migration and invasion of lung adenocarcinoma cells. The involved molecular mechanisms are also initially explored. Methods miR-203 was detected in lung tissues of 40 patients with lung adenocarcinoma by real time PCR. The expression of miR-203 was detected in lung adenocarcinoma cell lines H1650, A549, H1975, SPC-A-1 by real time PCR. The potential target gene of miR-203 was predicted by online bioinformatic softwares. Pre-miR-203 mimics, Bmi-1 gene and Bmi-1 siRNA were transfected into H1975 cell line by lipofectamine 2000. The Bmi-1 protein level was analyzed by Western blotting. The predicted miR-203 binding site in Bmi-1 3’-untranslated region( UTR) was validated by dual-luciferase reporter gene assay. The migration ability of H1975 cells was determined by Transwell assay. Results The relative expression of miR-203 in lung adenocarcinoma tissues was 0?065 ± 0?013. The expression level of miR-203 in the lymph node metastasis group was lower than those in the non-metastasis group. The relative expression of miR-203 in H1650, A549, H1975 and SPC-A-1 cell lines were 0?280 ± 0?102, 0?308 ± 0?168, 0?167 ± 0?073 and 0?287 ± 0?096, respectively. Bmi-1 was a potential target gene of miR-203 predicted by miRanda and TargetScan. The Bmi-1 protein level was remark-ably decreased in the pre-miR-203 mimics group. Dual-luciferase reporter gene assay validated the predicted miR-203 binding site of Bmi-1 3’ UTR. Overexpression of miR-203 significantly inhibited the migration and invasion of H1975 cells, whereas the cell migration and invasion ability could be restored by overexpression of Bmi-1. Conclusion miR-203 can suppress the migration of lung adenocar-cinoma cell line H1975 via down-regulating Bmi-1 expression. miR-203 might be a potential tumor metastasis suppressor miRNA.