AIM:To investigate the expression and effect of histone deacetylase 7(HDAC7)in human retinal microvascular endothelial cells(HRMECs)under high glucose condition and related mechanism,and the expression of HDAC7 in the...AIM:To investigate the expression and effect of histone deacetylase 7(HDAC7)in human retinal microvascular endothelial cells(HRMECs)under high glucose condition and related mechanism,and the expression of HDAC7 in the retinal tissue in diabetic rats.METHODS:The expression of HDAC7 in HRMECs under high glucose and the retinal tissue from normal or diabetic rats were detected with immunohistochemistry and Western blot.LV-shHDAC7 HRMECs were used to study the effect of HDAC7 on cell activities.Cell count kit-8(CCK-8),5-ethynyl2’-deoxyuridine(EdU),flow cytometry,scratch test,Transwell test and tube formation assay were used to examine the ability of cell proliferation,migration,and angiogenesis.Finally,a preliminary exploration of its mechanism was performed by Western blot.RESULTS:The expression of HDAC7 was both upregulated in retinal tissues of diabetic rats and high glucosetreated HRMECs.Down-regulation of HDAC7 expression significantly reduced the ability of proliferation,migration,and tube formation,and reversed the high glucose-induced high expression of CDK1/Cyclin B1 and vascular endothelial growth factor in high glucose-treated HRMECs.CONCLUSION:High glucose can up-regulate the expression of HDAC7 in HRMECs.Down-regulation of HDAC7 can inhibit HRMECs activities.HDAC7 is proposed to be involved in pathogenesis of diabetic retinopathy and a therapeutic target.展开更多
目的:观察血管生成素-1/重组质粒(pEGFP/Ang-1)转染的大鼠骨髓间充质干细胞(BMSCs)对高浓度葡萄糖损伤猴脉络膜-视网膜内皮细胞(RF/6A)的保护作用。方法:以pEGFP/Ang-1转染BMSCs,倒置荧光显微镜下观察增强型绿色荧光蛋白的表达,再利用Tr...目的:观察血管生成素-1/重组质粒(pEGFP/Ang-1)转染的大鼠骨髓间充质干细胞(BMSCs)对高浓度葡萄糖损伤猴脉络膜-视网膜内皮细胞(RF/6A)的保护作用。方法:以pEGFP/Ang-1转染BMSCs,倒置荧光显微镜下观察增强型绿色荧光蛋白的表达,再利用Transwell模型,将转染的BMSCs与RF/6A共培养于高浓度葡萄糖培养基中。3d后MTT法检测RF/6A活力,Western blot检测磷酸化蛋白激酶B(phosphorylated protein kinase B,P-PKB)的表达,从而探讨转染pEGFP/Ang-1的BMSCs对高浓度葡萄糖培养中的RF/6A的保护作用。结果:成功转染pEGFP/Ang-1的BMSCs可见增强型绿色荧光蛋白表达,与转染pEGFP/Ang-1的BMSCs共培养的RF/6A细胞活力及P-PKB的表达均高于未转染组(均P<0.01),与对照组无明显差别(均P>0.05)。结论:质粒pEGFP/Ang-1转染的BMSCs对高糖环境中的RF/6A具有保护作用,其机制可能与P-PKB表达上调有关。展开更多
基金Supported by the Shaanxi Province Traditional Chinese Medicine Project(No.SZY-KJCYC-2023-028)。
文摘AIM:To investigate the expression and effect of histone deacetylase 7(HDAC7)in human retinal microvascular endothelial cells(HRMECs)under high glucose condition and related mechanism,and the expression of HDAC7 in the retinal tissue in diabetic rats.METHODS:The expression of HDAC7 in HRMECs under high glucose and the retinal tissue from normal or diabetic rats were detected with immunohistochemistry and Western blot.LV-shHDAC7 HRMECs were used to study the effect of HDAC7 on cell activities.Cell count kit-8(CCK-8),5-ethynyl2’-deoxyuridine(EdU),flow cytometry,scratch test,Transwell test and tube formation assay were used to examine the ability of cell proliferation,migration,and angiogenesis.Finally,a preliminary exploration of its mechanism was performed by Western blot.RESULTS:The expression of HDAC7 was both upregulated in retinal tissues of diabetic rats and high glucosetreated HRMECs.Down-regulation of HDAC7 expression significantly reduced the ability of proliferation,migration,and tube formation,and reversed the high glucose-induced high expression of CDK1/Cyclin B1 and vascular endothelial growth factor in high glucose-treated HRMECs.CONCLUSION:High glucose can up-regulate the expression of HDAC7 in HRMECs.Down-regulation of HDAC7 can inhibit HRMECs activities.HDAC7 is proposed to be involved in pathogenesis of diabetic retinopathy and a therapeutic target.
文摘目的:观察血管生成素-1/重组质粒(pEGFP/Ang-1)转染的大鼠骨髓间充质干细胞(BMSCs)对高浓度葡萄糖损伤猴脉络膜-视网膜内皮细胞(RF/6A)的保护作用。方法:以pEGFP/Ang-1转染BMSCs,倒置荧光显微镜下观察增强型绿色荧光蛋白的表达,再利用Transwell模型,将转染的BMSCs与RF/6A共培养于高浓度葡萄糖培养基中。3d后MTT法检测RF/6A活力,Western blot检测磷酸化蛋白激酶B(phosphorylated protein kinase B,P-PKB)的表达,从而探讨转染pEGFP/Ang-1的BMSCs对高浓度葡萄糖培养中的RF/6A的保护作用。结果:成功转染pEGFP/Ang-1的BMSCs可见增强型绿色荧光蛋白表达,与转染pEGFP/Ang-1的BMSCs共培养的RF/6A细胞活力及P-PKB的表达均高于未转染组(均P<0.01),与对照组无明显差别(均P>0.05)。结论:质粒pEGFP/Ang-1转染的BMSCs对高糖环境中的RF/6A具有保护作用,其机制可能与P-PKB表达上调有关。
