秦皮乙素调控AKT/SKP2/MTH1通路诱导急性髓系白血病HL-60细胞凋亡的作用研究
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| 篇名: | 秦皮乙素调控AKT/SKP2/MTH1通路诱导急性髓系白血病HL-60细胞凋亡的作用研究 |
| TITLE: | Study on the apoptosis-inducing effect of esculetin on acute myeloid leukemia HL-60 cells via regulating the AKT/SKP2/MTH1 pathway |
| 摘要: | 目的 探讨秦皮乙素(Esc)通过调控蛋白激酶B(AKT)/S期激酶相关蛋白2(SKP2)/MutT同源酶1(MTH1)通路诱导急性髓系白血病(AML)HL-60细胞凋亡的作用。方法将HL-60细胞分为Control组(常规培养)、Esc低浓度组(L-Esc组,25μmol/LEsc)、Esc中浓度组(M-Esc组,50μmol/LEsc)、Esc高浓度组(H-Esc组,100μmol/LEsc)、Esc高浓度+SC79(AKT激动剂)组(100μmol/LEsc+5μmol/LSC79)。采用MTT法和克隆形成实验检测细胞增殖能力;采用CM-H2DCFDA荧光探针法检测细胞中活性氧(ROS)水平;采用流式细胞术检测细胞凋亡情况;采用Westernblot法检测细胞中凋亡相关蛋白[B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)、裂解的胱天蛋白酶3(cleavedcaspase-3)]和AKT/SKP2/MTH1通路相关蛋白[磷酸化AKT(p-AKT)、AKT、SKP2、MTH1]及AKT上下游效应蛋白磷脂酰肌醇3激酶(PI3K)和周期蛋白依赖性激酶抑制剂1(P21)、周期蛋白依赖性激酶抑制剂1B(P27)的表达。结果与Control组相比,L-Esc组、M-Esc组、H-Esc组细胞的存活率、集落数以及AKT、PI3K蛋白的磷酸化水平和SKP2、MTH1、Bcl-2蛋白表达水平均显著降低(P<0.05),而ROS水平、细胞凋亡率和Bax、cleavedcaspase-3、P21、P27蛋白表达水平均显著升高(P<0.05),且Esc的作用具有浓度依赖性(P<0.05);与H-Esc组相比,Esc高浓度+SC79组细胞上述指标均被显著逆转(P<0.05)。结论Esc可能通过抑制AKT/SKP2/MTH1通路,促进HL-60细胞中ROS的大量产生及细胞凋亡程序的启动,最终有效抑制HL-60细胞增殖。 |
| ABSTRACT: | OBJECTIVE To investigate the apoptosis-inducing effect of esculetin (Esc) on acute myeloid leukemia (AML) HL-60 cells by regulating the protein kinase B (AKT)/S-phase kinase-associated protein 2 (SKP2)/MutT homolog 1 (MTH1) pathway. METHODS AML HL-60 cells were randomly divided into control group (routine culture), Esc low-concentration group (L-Esc group, 25 μmol/L Esc), Esc medium-concentration group (M-Esc group, 50 μmol/L Esc), Esc high-concentration group (H-Esc group, 100 μmol/L Esc), and high-concentration of Esc+ SC79 (AKT agonist) group (100 μmol/L Esc+5 μmol/L SC79). Cell proliferation in each group was detected by MTT assay and colony formation assay. The level of reactive oxygen species (ROS) in cells was measured by using the CM-H2DCFDA fluorescent probe. Cell apoptosis was analyzed by flow cytometry. Western blot assay was performed to detect the expression levels of apoptosis-related proteins [B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), cleaved caspase-3], AKT/SKP2/MTH1 pathway-related proteins (p-AKT, AKT, SKP2, MTH1), along with the upstream and downstream proteins of AKT phosphatidylinositol 3-kinase (PI3K), cyclin-dependent kinase inhibitor 1 (P21) and cyclin-dependent kinase inhibitor 1B (P27). RESULTS Compared with control group, the cell viability, colony number, and the phosphorylation levels of AKT and PI3K proteins as well as protein expressions of SKP2, MTH1 and Bcl-2 were significantly decreased (P<0.05), while ROS level, apoptosis rate, and the expression levels of Bax, cleaved caspase-3, P21 and P27 proteins were significantly increased (P<0.05). Moreover, the effects of Esc exhibited concentration-dependence (P<0.05). Compared with H-Esc group, above indexes of high-concentration of Esc+ SC79 group were reversed significantly (P<0.05). CONCLUSIONS Esc may promote massive ROS production and induce activation of apoptosis in HL-60 cells by inhibiting the AKT/SKP2/MTH1 pathway, thus inhibiting the proliferation of HL-60 cells. |
| 期刊: | 2026年第37卷第01期 |
| 作者: | 宋卫华;褚福营;谢玮;陈金亮;赵枰;仇宏;陶健;陈相 |
| AUTHORS: | SONG Weihua,CHU Fuying,XIE Wei,CHEN Jinliang,ZHAO Ping,QIU Hong,TAO Jian,CHEN Xiang |
| 关键字: | 秦皮乙素;急性髓系白血病;HL-60细胞;蛋白激酶B;细胞凋亡;AKT/SKP2/MTH1通路 |
| KEYWORDS: | esculetin; acute myeloid leukemia; HL-60 cells; protein kinase B; cell apoptosis; AKT/SKP2/MTH1 pathway |
| 阅读数: | 68 次 |
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