中国临床药理学杂志
中國臨床藥理學雜誌
중국림상약이학잡지
THE CHINESE JOURNAL OF CLINICAL PHARMACOLOGY
2015年
7期
508-510
,共3页
吉西他滨%胰腺癌%凋亡%增殖
吉西他濱%胰腺癌%凋亡%增殖
길서타빈%이선암%조망%증식
gemcitabine%pancreatic cancer%apoptosis%proliferation
目的:探讨吉西他滨对人胰腺癌细胞株( PANC-1)增殖抑制和诱导凋亡的作用机制。方法不同浓度的吉西他滨(0,5,25 mg· L-1)处理PANC-1细胞48 h后,用MTT法检测不同浓度吉西他滨对PANC-1细胞增殖能力的影响,透射电子显微镜观察PANC-1细胞凋亡形态,免疫印迹法检测不同浓度吉西他滨作用后 C -IAP2、Bcl -2蛋白的表达变化,分光光度法检测 Caspase -3、Caspase-9活性。结果吉西他滨对PANC-1细胞生长有明显抑制作用,并可诱导人胰腺癌PANC-1细胞株凋亡,且呈剂量依赖性;吉西他滨可显著下调胰腺癌细胞PANC-1的C-IAP2、Bcl-2蛋白表达水平( P<0.05);吉西他滨作用后胰腺癌PANC -1细胞 Caspase -3、Caspase -9活性显著升高( P <0.05)。结论吉西他滨可诱导人胰腺癌细胞PANC-1凋亡,其作用机制可能与其下调凋亡抑制因子C-IAP2、Bcl-2表达并活化Caspase-3、Caspase-9有关。
目的:探討吉西他濱對人胰腺癌細胞株( PANC-1)增殖抑製和誘導凋亡的作用機製。方法不同濃度的吉西他濱(0,5,25 mg· L-1)處理PANC-1細胞48 h後,用MTT法檢測不同濃度吉西他濱對PANC-1細胞增殖能力的影響,透射電子顯微鏡觀察PANC-1細胞凋亡形態,免疫印跡法檢測不同濃度吉西他濱作用後 C -IAP2、Bcl -2蛋白的錶達變化,分光光度法檢測 Caspase -3、Caspase-9活性。結果吉西他濱對PANC-1細胞生長有明顯抑製作用,併可誘導人胰腺癌PANC-1細胞株凋亡,且呈劑量依賴性;吉西他濱可顯著下調胰腺癌細胞PANC-1的C-IAP2、Bcl-2蛋白錶達水平( P<0.05);吉西他濱作用後胰腺癌PANC -1細胞 Caspase -3、Caspase -9活性顯著升高( P <0.05)。結論吉西他濱可誘導人胰腺癌細胞PANC-1凋亡,其作用機製可能與其下調凋亡抑製因子C-IAP2、Bcl-2錶達併活化Caspase-3、Caspase-9有關。
목적:탐토길서타빈대인이선암세포주( PANC-1)증식억제화유도조망적작용궤제。방법불동농도적길서타빈(0,5,25 mg· L-1)처리PANC-1세포48 h후,용MTT법검측불동농도길서타빈대PANC-1세포증식능력적영향,투사전자현미경관찰PANC-1세포조망형태,면역인적법검측불동농도길서타빈작용후 C -IAP2、Bcl -2단백적표체변화,분광광도법검측 Caspase -3、Caspase-9활성。결과길서타빈대PANC-1세포생장유명현억제작용,병가유도인이선암PANC-1세포주조망,차정제량의뢰성;길서타빈가현저하조이선암세포PANC-1적C-IAP2、Bcl-2단백표체수평( P<0.05);길서타빈작용후이선암PANC -1세포 Caspase -3、Caspase -9활성현저승고( P <0.05)。결론길서타빈가유도인이선암세포PANC-1조망,기작용궤제가능여기하조조망억제인자C-IAP2、Bcl-2표체병활화Caspase-3、Caspase-9유관。
Objective To evaluate gemcitabine in vitro inducing human pancreatic cancer cell Pancreatic cancer cell -1 ( PANC-1 ) apoptosis and its molecular mechanism.Methods Cell proliferation activity was analyzed by MTT colorimetric assay.Cell morphology was observed by transmission electron microscopy.C-IAP2, Bcl-2 protein expression were analyzed by Western blot.Caspase -3, Caspase -9 activity were detected by spectrophotometry.Results The positive rate and expre-ssion level of C-IAP2 were higher in pancreatic carcinoma than normal pancreatic tissues.Gemcitabine inhibited pancreatic cancer cell line PANC-1 proliferation with a dose -dependent manner with its value of IC50 5.79 μg · mL-1 by MTT assay.Western blot analysis showed that gemcitabine significantly reduced C -IAP2, Bcl -2 protein expression level.Spectrophotometric analysis showed that gemcitabin esignificantly increased Caspase -3, Caspase -9 activity in pancreatic cancer cells PANC -1.Conclusion The apoptosis of human pancreatic cancer PANC-1 cell could be induced by gemcitabine.Gemcitabine pro -apoptotic role may be due to decrease of C -IAP2 and Bcl-2 expression levels, and activation of Caspase -3, Caspase-9.