地骨皮醇提液对胰岛β细胞增殖和凋亡的影响

摘要

[目的]以大鼠INS-1胰岛素瘤细胞株作为研究对象，用中药地骨皮（Cortex Lycii）醇提液干预INS-1细胞株，观察不同浓度地骨皮醇提液对胰岛β细胞增殖、凋亡变化的影响，为中药保护胰岛β细胞提供实验室依据。[方法]将INS-1细胞株分为正常糖对照组（control）、高糖组（high glucose，HG）、HG+Cortex Lycii（1g·L-1）组、HG+Cortex Lycii（2g·L-1）组以及HG+Cortex Lycii（4g·L-1）组，分别于药物干预24h、48h、72h后通过CCK-8法检测各组INS-1细胞的增殖率、采用流式细胞术检测细胞的凋亡率，并行相应统计学分析。[结果]48h、72h时与HG组相比，HG+Cortex Lycii各浓度组INS-1细胞的增殖率均有提高（P<0.01）；与另外两个药物浓度组相比，72h时HG+Cortex Lycii（2g·L-1）组细胞增殖率最高，差异有统计学意义（P<0.05）。与HG组相比，HG+Cortex Lycii（1g·L-1）组、HG+Cortex Lycii（2g·L-1）组和HG+Cortex Lycii（4g·L-1）组INS-1细胞凋亡率显著下降，差异有统计学意义（P<0.01）；HG+Cortex Lycii（2g·L-1）组凋亡率低于HG+Cortex Lycii（1g·L-1）组，差异有统计学意义（P<0.05）。[结论]地骨皮醇提液可促进高糖环境下INS-1细胞的增殖，抑制高糖环境下INS-1细胞的凋亡，其最佳的药物浓度为2g·L-1。%Objective] Observing Cortex Lycii Radicis' effect(Cortex Lycii) on rat insulinoma cells(INS-1) proliferation and apoptosis. To explore the mechanism of Cortex Lycii on Pancreatic Beta Cell Proliferation and apoptosis.[ Methods] After primary culture, cells were randomly divided into blank control group:control,11.1mmol·L-1 glucose,HG,30mmol·L-1 glucose, HG+Cortex Lycii(1g·L-1), HG+Cortex Lycii(2g·L-1), HG+Cortex Lycii(4g·L-1), the survival rate of cells was observed by cell counting kit-8(CCK-8);the apoptosis rate was observed by Annexin V stammg. [Results] ①Compared with HG the better effect of cell proliferation groups of Cortex Lycii(P<0.01), the best is group of Cortex Lycii(2g·L-1)(P<0.05) ②Compared with HG group the higher survival rate is group of Cortex Lycii(P<0.01), the lower apoptosis rate of Cortex Lycii(2g·L-1) compared with Cortex Lycii(1g·L-1). [Conclusion] Cortex Lycii can promote the proliferation of pancreatic beta cell, inhibit the apoptosis to protect the pancreatic beta cell. The optimal concentration is 2g·L-1.