摘要目的 探讨腺病毒介导的葡萄糖转运体3(Ad-GLUT3)对缺氧再灌注损伤的PC12细胞的影响.方法 在构建大鼠PC12细胞缺氧再灌注损伤模型的基础上,使用Ad-GLUT3转染PC12细胞,并以Ad-GFP转染和空白质粒转染为对照.流式细胞仪和TUNEL法进行细胞凋亡检测,同位素放射法分析葡萄糖代谢率情况,Western blotting分析细胞凋亡相关蛋白核因子-KB(NF-KB)的表达.结果 流式细胞仪结果显示,Ad-GLUT3组凋亡率(4.7％±1.75％)较Ad-GFP组(14.25％±3.46％)和空白对照组(13.1％±2.98％)明显下降,差异有统计学意义(P＜0.05)；同时TUNEL 法结果显示,Ad-GLUT3组凋亡率(7.7％±3.31％)较Ad-GFP组(17.1％±3.10％)和空白对照组(15.2％±2.70％)明显下降,差异有统计学意义(P＜0.05).Ad-GLUT3组葡萄糖摄取率(603％±13.1％)较Ad-GFP 组(300％±8.77％)和空白对照组(319％±11.2％)明显提高,差异有统计学意义(P＜0.05).Ad-GLUT3组NF-kB被激活的程度(0.92±0.17)较Ad-GFP组(1.02±0.24)和空白对照组(1.06±0.21)明显下降,差异有统计学意义(P＜0.05).结论 Ad-GLUT3转染缺氧再灌注损伤的PC12细胞可以有效提高细胞的能量代谢,抑制细胞凋亡.

abstracts[Objective]To investigate the effect of adenovirus-mediated glucose transporter 3 (Ad-GLUT3) infection on PC 12 cells of rats after hypoxia-reperfusion injury.[Methods]PC 12 cells treated with hypoxia and re--oxygenation were prepared;after PC12 cells being infected by Ad-GLUT3 (experimental group),adenovirus encoding green fluorescent protein (Ad-GFP group) and blank plasmid (control group),respectively,flow cytometry (FC) and TUNEL assay were used to analyze the apoptosis of PC12 cells;the glucose uptake rate was detected by isotopic-scintiscan,and the expression of nuclear factor (NF-kB) was detected by Western blotting.[Results] FC indicated that the apoptotic rate in the experimental group (4.7％±1.75％) was significantly lower as compared with that in the Ad-GFP group (14.25％±3.46％) and control group (13.1％±2.98％,P＜0.05);TUNEL assay showed that the apoptotic rate in the experimental group (7.7％±3.31％) was significantly lower as compared with that in the Ad-GFP group (17.1％±3.10％) and control group (15.2％±2.70％,P＜0.05).And the glucose uptake rate in the experimental group (603％±13.1％) was obviously higher as compared with that in the Ad-GFP group (300％±8.77％) and control group (319％±11.2％,P＜0.05);and the NF-k＜B level in the experimental group (0.92±0.17) was significantly lower as compared with that in the Ad-GFP group (1.02±0.24) and control group (1.06±0.21,P＜0.05).[Conclusion] After being infected by Ad-GLUT3,the PC12 cells treated with hypoxia and re-oxygenation enjoy elevated glucose uptake rate and inhibited apoptotic rate.