莪术醇对肝窦内皮细胞糖酵解和肝窦毛细血管化的作用机制
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国家自然科学基金项目(82204755,81960751);广西自然科学基金项目(2023GXNSFBA026274,2025GXNSFAA069460);广西研究生教育创新计划项目(YCBZ2024150);广西中医药大学赛恩斯新医药学院科研项目(2022CX001,2022MS002,2023MS008,2024ZZA003);广西中医药大学赛恩斯新医药学院国家级大学生创新创业训练项目(202313643012);广西中医药大学国家级大学生创新创业训练项目(202310600020)


Mechanism of Curcumol on Glycolysis of Hepatic Sinusoidal Endothelial Cells and Sinusoidal Capillarization
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    摘要:

    目的:探究莪术醇对肝窦内皮细胞糖酵解和肝窦毛细血管化的药理机制。方法:将肝窦内皮细胞分为空白组、模型组、莪术醇组(12.5,25,50 mg/L),试剂盒观察莪术醇对肝窦内皮细胞增殖和迁移的影响;试剂盒检测莪术醇对肝窦内皮细胞葡萄糖摄取、乳酸和三磷酸腺苷(ATP)产量的影响;酶联免疫吸附测定检测莪术醇对己糖激酶2(HK2)、磷酸果糖激酶1(PFK1)、丙酮酸激酶M2(PKM2)和乳酸脱氢酶A(LDH-A)表达和活性的影响;免疫荧光检测莪术醇对血小板-内皮细胞黏附分子(CD31)、血管性血友病因子(vWF)、胶原蛋白Ⅳ(Collagen Ⅳ)表达的影响;扫描电镜观察莪术醇对肝窦内皮细胞表面窗孔的作用;WB和RT-PCR检测莪术醇对磷脂酰肌醇3-激酶(PI3K)和蛋白激酶B(AKT)分子表达的影响。结果:细胞计数试剂盒-8(CCK8)发现莪术醇抑制肝窦内皮细胞增殖;Transwell发现莪术醇抑制肝窦内皮细胞迁移;试剂盒发现莪术醇可以减少肝窦内皮细胞葡萄糖摄取、乳酸和ATP的产出;ELISA发现莪术醇抑制HK2、PFK1、PKM2和LDH-A表达和活性;免疫荧光发现莪术醇减少CD31、vWF、Collagen Ⅳ的表达;扫描电镜发现莪术醇增加肝窦内皮细胞表面窗孔;分子生物学实验表明莪术醇抑制PI3K、AKT的表达。结论:莪术醇抑制PI3K/AKT通路活性,抑制肝窦内皮细胞糖酵解和肝窦毛细血管化,可能是其抗肝纤维化的机制。

    Abstract:

    To explore the pharmacological mechanism of curcumol on glycolysis of hepatic sinusoidal endothelial cells and sinusoidal capillarization.Methods:Hepatic sinusoidal endothelial cells were divided into a blank group,a model group,and curcumol groups(12.5,25,and 50 mg/L).The kit was used to observe the effect of curcumol on the proliferation and migration of hepatic sinusoidal endothelial cells and to detect the effect of curcumol on the glucose uptake,as well as lactic acid and adenosine triphosphate(ATP) production of hepatic sinusoidal endothelial cells.Enzyme-linked immunosorbent assay(ELISA) was conducted to detect the effect of curcumol on the expression and activity of hexokinase 2(HK2),phosphofructokinase 2(PFK2),phosphofructokinase 1(PFK1),pyruvate kinase M2(PKM2),and lactate dehydrogenase A(LDH-A).An immunofluorescence assay was performed to detect the effect of curcumol on the expression of platelet-endothelial cell adhesion molecule(CD31),vascular haemophilic factor(vWF),and collagen IV.Scanning electron microscopy was applied to observe the effect of curcumol on the fenestration on the surface of hepatic sinusoidal endothelial cells.Western blot(WB) and RT-PCR were employed to observe the effect of curcumol on the expression of phosphatidylinositol 3-kinase(PI3K) and protein kinase B(AKT) molecules.Results:Cell Counting Kit-8(CCK8) assay revealed that curcumol inhibited the proliferation of hepatic sinusoidal endothelial cells.The Transwell assay found that curcumol inhibited the migration of hepatic sinusoidal endothelial cells.Kit assay discovered that curcumol decreased glucose uptake,as well as the production of lactic acid and ATP in hepatic sinusoidal endothelial cells.ELISA demonstrated that curcumol inhibited the expression and activity of HK2,PFK1,PKM2,and LDH-A.Immunofluorescence assay manifested that curcumol reduced the expression of CD31,vWF,and Collagen IV.Scanning electron microscopy unveiled that curcumol increased the fenestration on the surface of hepatic sinusoidal endothelial cells.Molecular biology experiments showed that curcumol inhibited the expression of PI3K and AKT.Conclusion:Curcumol inhibits the activity of the PI3K/AKT pathway,glycolysis of hepatic sinusoidal endothelial cells,and sinusoidal capillarization,which may be its anti-hepatic fibrosis mechanism.

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汪磊,郑洋,王佳慧,黄艳青,刘艳芳,赵铁建,梁天坚,黄娜.莪术醇对肝窦内皮细胞糖酵解和肝窦毛细血管化的作用机制[J].世界中医药,2025,(08).

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  • 收稿日期:2024-01-30
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  • 在线发布日期: 2025-06-17
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