山东医药
山東醫藥
산동의약
SHANDONG MEDICAL JOURNAL
2015年
2期
1-4
,共4页
邵晓冬%张永国%陈江%王金玲%郭晓钟%任丽楠
邵曉鼕%張永國%陳江%王金玲%郭曉鐘%任麗楠
소효동%장영국%진강%왕금령%곽효종%임려남
胃肿瘤,胃癌%herg基因%HERG蛋白%HERG电流%延迟整流钾通道%肿瘤形成过程
胃腫瘤,胃癌%herg基因%HERG蛋白%HERG電流%延遲整流鉀通道%腫瘤形成過程
위종류,위암%herg기인%HERG단백%HERG전류%연지정류갑통도%종류형성과정
stomach neoplasms%human ether-a-go-go-related gene%HERG protein%HERG current%delayed rectifier potassium channel%neoplastic processes
目的:探讨胃癌细胞herg mRNA、HERG蛋白表达及HERG电流强度的变化的临床意义。方法培养胃癌细胞(胃癌细胞系SGC7901、MGC803、AGS、MKN45)及永生化胃上皮细胞( GES ),取对数生长期细胞用于实验。采用RT-PCR法检测herg mRNA表达,Western blot法检测HERG蛋白表达,采用全细胞膜片钳技术测定SGC7901及GES的HERG电流强度。结果 herg mRNA及其蛋白在4种胃癌细胞系中均有表达,AGS中HERG蛋白表达量低于其他三种细胞系( P均<0.05);GES中无herg mRNA及其蛋白表达。在SGC7901中检测到HERG电流, GES中未记录到HERG电流。结论 herg mRNA及其蛋白在胃癌细胞系SGC7901、MGC803、AGS、MKN45表达增高, SGC7901中存在HERG电流。 HERG蛋白可能参与了胃癌的发生,并与胃癌恶性程度有关。
目的:探討胃癌細胞herg mRNA、HERG蛋白錶達及HERG電流彊度的變化的臨床意義。方法培養胃癌細胞(胃癌細胞繫SGC7901、MGC803、AGS、MKN45)及永生化胃上皮細胞( GES ),取對數生長期細胞用于實驗。採用RT-PCR法檢測herg mRNA錶達,Western blot法檢測HERG蛋白錶達,採用全細胞膜片鉗技術測定SGC7901及GES的HERG電流彊度。結果 herg mRNA及其蛋白在4種胃癌細胞繫中均有錶達,AGS中HERG蛋白錶達量低于其他三種細胞繫( P均<0.05);GES中無herg mRNA及其蛋白錶達。在SGC7901中檢測到HERG電流, GES中未記錄到HERG電流。結論 herg mRNA及其蛋白在胃癌細胞繫SGC7901、MGC803、AGS、MKN45錶達增高, SGC7901中存在HERG電流。 HERG蛋白可能參與瞭胃癌的髮生,併與胃癌噁性程度有關。
목적:탐토위암세포herg mRNA、HERG단백표체급HERG전류강도적변화적림상의의。방법배양위암세포(위암세포계SGC7901、MGC803、AGS、MKN45)급영생화위상피세포( GES ),취대수생장기세포용우실험。채용RT-PCR법검측herg mRNA표체,Western blot법검측HERG단백표체,채용전세포막편겸기술측정SGC7901급GES적HERG전류강도。결과 herg mRNA급기단백재4충위암세포계중균유표체,AGS중HERG단백표체량저우기타삼충세포계( P균<0.05);GES중무herg mRNA급기단백표체。재SGC7901중검측도HERG전류, GES중미기록도HERG전류。결론 herg mRNA급기단백재위암세포계SGC7901、MGC803、AGS、MKN45표체증고, SGC7901중존재HERG전류。 HERG단백가능삼여료위암적발생,병여위암악성정도유관。
Objective To investigate the expression of herg gene , HERG protein and HERG current in gastric cancer cells.Methods Gastric cancer cells and gastric epithelial ( GES) cells were cultured to logarithmic phase .The expres-sions of herg mRNA and HERG protein in gastric cancer cells and GES cells were measured by using RT -PCR and Western blot, respectively.The whole cell configuration of the patch-clamp technique was employed to record HERG currents in va-rious cells .Results HERG mRNA and protein were positively expressed in four gastric cancer cell lines .Expression level of HERG protein in AGS cells was lower compared with the other three gastric cancer cell lines (P<0.05).There was negative expression of herg mRNA and HERG protein in GES cell line .HERG current was detected in gastric cancer cell , whereas there was no HERG current in GES cell .Conclusion Herg gene and HERG protein were highly expressed in gas-tric cancer cells and HERG current was exclusively detected in gastric cancer cells .HERG protein was associated with car-cinogenesis of gastric cancer and may serve as a diagnostic marker for gastric cancer .