广东医学
廣東醫學
엄동의학
GUNAGDONG MEDICAL JOURNAL
2014年
11期
1654-1658
,共5页
曹稳珑%韦尉元%张笑石%罗文%严林海%谢玉波%肖强
曹穩瓏%韋尉元%張笑石%囉文%嚴林海%謝玉波%肖彊
조은롱%위위원%장소석%라문%엄림해%사옥파%초강
胃癌%SGC - 7901 细胞%E2F - 1%过表达
胃癌%SGC - 7901 細胞%E2F - 1%過錶達
위암%SGC - 7901 세포%E2F - 1%과표체
gastric cancer%SGC - 7901 cells%E2F - 1%overexpression
目的:探讨 E2F -1过表达对胃癌 SGC -7901细胞增殖、生长和细胞周期的影响及其分子机制。方法采用携带 E2F -1基因的重组慢病毒颗粒(LV - E2F -1- GFP)感染人胃癌 SGC -7901细胞(LV - E2F -1-GFP 组);以对照慢病毒颗粒(LV - GFP)感染人胃癌 SGC -7901细胞作为阴性对照(LV - GFP 组);空白对照组常规培养胃癌 SGC -7901细胞,不作任何处理。分别采用 CCK -8法检测细胞的增殖活力,流式细胞仪检测各组细胞周期的分布,RT - PCR 和 Western blot 技术检测细胞中 Skp2、Bax、Bcl -2、CylinD1和 Survivin 基因 mRNA 和蛋白的表达。结果与 LV - GFP 组和空白对照组比较,LV - E2F -1- GFP 组人胃癌 SGC -7901细胞增殖活力明显降低(P <0.05),G0/ G1期所占比例上升(P <0.05),Skp2、Bcl -2、CylinD1和 Survivin 基因的 mRNA 和蛋白的表达降低(P <0.05),Bax 基因的 mRNA 和蛋白的表达上调(P <0.05),而 LV - GFP 组和空白对照组比较,差异无统计学意义(P >0.05)。结论慢病毒介导 E2F -1基因过表达抑制胃癌细胞增殖和生长,使细胞周期停滞在 G0/ G1期,其机制可能与 E2F -1基因过表达使胃癌细胞 Skp2、Survivin、Bcl -2、CylinD1基因表达下调和 Bax 基因表达上调有关。
目的:探討 E2F -1過錶達對胃癌 SGC -7901細胞增殖、生長和細胞週期的影響及其分子機製。方法採用攜帶 E2F -1基因的重組慢病毒顆粒(LV - E2F -1- GFP)感染人胃癌 SGC -7901細胞(LV - E2F -1-GFP 組);以對照慢病毒顆粒(LV - GFP)感染人胃癌 SGC -7901細胞作為陰性對照(LV - GFP 組);空白對照組常規培養胃癌 SGC -7901細胞,不作任何處理。分彆採用 CCK -8法檢測細胞的增殖活力,流式細胞儀檢測各組細胞週期的分佈,RT - PCR 和 Western blot 技術檢測細胞中 Skp2、Bax、Bcl -2、CylinD1和 Survivin 基因 mRNA 和蛋白的錶達。結果與 LV - GFP 組和空白對照組比較,LV - E2F -1- GFP 組人胃癌 SGC -7901細胞增殖活力明顯降低(P <0.05),G0/ G1期所佔比例上升(P <0.05),Skp2、Bcl -2、CylinD1和 Survivin 基因的 mRNA 和蛋白的錶達降低(P <0.05),Bax 基因的 mRNA 和蛋白的錶達上調(P <0.05),而 LV - GFP 組和空白對照組比較,差異無統計學意義(P >0.05)。結論慢病毒介導 E2F -1基因過錶達抑製胃癌細胞增殖和生長,使細胞週期停滯在 G0/ G1期,其機製可能與 E2F -1基因過錶達使胃癌細胞 Skp2、Survivin、Bcl -2、CylinD1基因錶達下調和 Bax 基因錶達上調有關。
목적:탐토 E2F -1과표체대위암 SGC -7901세포증식、생장화세포주기적영향급기분자궤제。방법채용휴대 E2F -1기인적중조만병독과립(LV - E2F -1- GFP)감염인위암 SGC -7901세포(LV - E2F -1-GFP 조);이대조만병독과립(LV - GFP)감염인위암 SGC -7901세포작위음성대조(LV - GFP 조);공백대조조상규배양위암 SGC -7901세포,불작임하처리。분별채용 CCK -8법검측세포적증식활력,류식세포의검측각조세포주기적분포,RT - PCR 화 Western blot 기술검측세포중 Skp2、Bax、Bcl -2、CylinD1화 Survivin 기인 mRNA 화단백적표체。결과여 LV - GFP 조화공백대조조비교,LV - E2F -1- GFP 조인위암 SGC -7901세포증식활력명현강저(P <0.05),G0/ G1기소점비례상승(P <0.05),Skp2、Bcl -2、CylinD1화 Survivin 기인적 mRNA 화단백적표체강저(P <0.05),Bax 기인적 mRNA 화단백적표체상조(P <0.05),이 LV - GFP 조화공백대조조비교,차이무통계학의의(P >0.05)。결론만병독개도 E2F -1기인과표체억제위암세포증식화생장,사세포주기정체재 G0/ G1기,기궤제가능여 E2F -1기인과표체사위암세포 Skp2、Survivin、Bcl -2、CylinD1기인표체하조화 Bax 기인표체상조유관。
Objective To investigate the effect of E2F -1 overexpression on the proliferation,growth and cell cy-cle of human gastric cancer cell line SGC -7901 and the molecular mechanism. Methods Humans gastric cancer SGC -7901 cells were infected by E2F - 1 recombinant lentiviral particles(LV - E2F - 1 - GFP),as experimental group(LV -E2F - 1 - GFP group),while control lentiviral particles(LV - GFP)infected human gastric cancer SGC - 7901 cells,as a negative control group(LV - GFP group)and blank control group was cultured conventionally without any treatment. CCK - 8 were used to detect cell proliferation activity,while flow cytometry was used for assessment of cell cycle distribu-tion. Semi - quantitative reserve transcription - polymerase chain reaction(RT - PCR)and Western blot were applied for measurement of mRNA and protein expression of Skp2,Bax,Bcl - 2,CylinD1 and Survivin. Results Compared with LV - GFP group and blank control group,significant lower proliferation activity(P < 0. 05),increased G0 / G1 phase pro-portion(P < 0. 05),down - regulation of mRNA and protein of Skp2,Bcl - 2,CylinD1 and Survivin(P < 0. 05),up -regulation of Bax mRNA and protein(P < 0. 05),were revealed LV - E2F - 1 - GFP group. Furthermore,there was no significant difference between LV - GFP group and blank control group(P > 0. 05). Conclusion Lentivirus - mediated overexpression of E2F - 1 induces growth inhibition of cancer cells,and cell cycle arrest at G0 / G1 phase;probably via up - regulation of Bax and down - regulation of Skp2,Survivin,Bcl - 2 and CylinD1.