1.广州医科大学第二临床学院,广东 广州510260
2.广州医科大学附属第二医院神经科学研究所,广东 广州510260
3.广州医科大学附属第二医院番禺院区神经外科,广东 广州511400
潘甚豪,第一作者,E-mail: psh@stu.gzhmu.edu.cn
纸质出版日期:2024-07-20,
收稿日期:2024-05-20,
录用日期:2024-06-23
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潘甚豪,曹东芳,赵凡一等.疏血通抑制Bim依赖的小脑颗粒神经元凋亡[J].中山大学学报(医学科学版),2024,45(04):549-556.
PAN Shenhao,CAO Dongfang,ZHAO Fanyi,et al.Shuxuetong Inhibits Bim-dependent Apoptosis of Cerebellar Granule Neurons[J].Journal of Sun Yat-sen University(Medical Sciences),2024,45(04):549-556.
潘甚豪,曹东芳,赵凡一等.疏血通抑制Bim依赖的小脑颗粒神经元凋亡[J].中山大学学报(医学科学版),2024,45(04):549-556. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).20240711.003.
PAN Shenhao,CAO Dongfang,ZHAO Fanyi,et al.Shuxuetong Inhibits Bim-dependent Apoptosis of Cerebellar Granule Neurons[J].Journal of Sun Yat-sen University(Medical Sciences),2024,45(04):549-556. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).20240711.003.
目的
2
探究疏血通及其主要成分水蛭素对Sprague-Dawley(SD)大鼠小脑颗粒神经元(CGNs)凋亡的影响及机制。
方法
2
体外成熟7 d的CGNs分为存活对照组(用含K
+
浓度为25 mmol/L的培养基,即25 K组)、凋亡组(用含K
+
浓度为5 mmol/L的培养基,即5 K组)、以1/50、1/40、1/30、1/20、1/10浓度(稀释50、40、30、20、10倍)疏血通注射液处理组(25 K以及5 K合并疏血通处理组)以及对应不同浓度(2 U/mL、2.5 U/mL、3.34 U/mL、5 U/mL、10 U/mL)水蛭素处理组(25 K以及5 K合并水蛭素处理组),用Hoechst染色法观察并统计凋亡率。在蛋白印迹实验中,在25 K和5 K条件下用1/50、1/10浓度疏血通注射液以及对应2 U/mL、10 U/mL浓度水蛭素处理细胞,用Western blot法检测Cleaved Caspase-3、Bim、VEGF的表达水平。
结果
2
核染色结果显示,与25 K存活对照组比较,5 K凋亡组凋亡率增加;与25 K存活对照组比较,不同浓度疏血通注射液与水蛭素处理细胞后凋亡率无明显变化;与5 K凋亡组比较,不同浓度疏血通注射液与水蛭素处理细胞后凋亡率下降,且随着浓度的升高,凋亡率下降越明显。Western blot结果显示,与5 K凋亡组比较,不同浓度疏血通与水蛭素处理细胞后Cleaved Caspase-3、Bim蛋白表达水平均下降,VEGF蛋白表达水平升高。
结论
2
疏血通及其主要成分水蛭素通过抑制Bim表达,进而抑制线粒体依赖的小脑颗粒神经元凋亡。
Objective
2
To investigate the effect and mechanism of Shuxuetong and its main component hirudin on the apoptosis of cerebellar granule neurons (CGNs) in Sprague-Dawley(SD) rats.
Methods
2
CGNs incubated in vitro for 7 days were divided into survival control group or 25 K group (cultured in medium containing 25 mmol/L KCL) and apoptosis group or 5 K group (cultured in medium containing 5 mmol/L KCL). CGNs were separately treated with proportionally diluted and different concentrations of Shuxuetong (1/50, 1/40, 1/30, 1/20 and 1/10) and the corresponding different concentrations of hirudin (2, 2.5, 3.34, 5 and 10 U / mL). Hoechst staining was performed to analyze the apoptosis. Western blot was used to detect the expression levels of Cleaved Caspase-3, Bim and VEGF.
Results
2
Hoechst staining showed that 5 K group had a higher apoptosis rate than 25 K group. In 25 K group, there was no significant change in the apoptosis rate between neurons treated with different concentrations of Shuxuetong and hirudin, but significant changes was found in 5 K group and the higher the concentration, the lower the apoptosis rate. Western blot results revealed that, compared with control neurons in 5 K group, Shuxuetong injection and hirudin treatments resulted in a decrease of Cleaved Caspase-3 and Bim expression, but an increase of VEGF protein.
Conclusions
2
Shuxuetong and its main component hirudin inhibits the apoptosis of CGNs through suppressing proapoptotic BH3-only protein Bim.
小脑颗粒神经元凋亡疏血通水蛭素Bim血管内皮生长因子
cerebellar granule neuronsapoptosisshuxuetonghirudinBimVEGF
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