抑制去整合素金属蛋白酶10对阿尔茨海默病APPswe695细胞凋亡的影响及其作用机制
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国家重点研发计划 (2022YFC2403500)


Effect of inhibiting disintegrin metalloproteinase 10 on apoptosis of Alzheimer disease APPswe695 cells and its mechanism
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    摘要:

    目的 探讨抑制去整合素金属蛋白酶 10(ADAM10)对阿尔茨海默病 APPswe695 细胞 凋亡的影响及其作用机制。方法 使用 1、5、10、20 μmol/L 浓度的 ADAM10 抑制剂 GI254023X 处理 APPswe695细胞,并设置PBS空白对照组及二甲基亚砜(DMSO)阴性对照组。采用Cell Counting Kit(CCK-8) 法检测细胞活性,蛋白免疫印迹检测丝氨酸 / 苏氨酸蛋白激酶(Akt)/ 叉头框蛋白 O3a(FOXO3a)信号通路 和凋亡相关蛋白水平。结果 GI254023X 组的 Akt 和 FOXO3a 的总蛋白表达量分别为(0.973 0±0.157 7) 及(1.149 8±0.196 7),与 PBS 组、DMSO 组相比,差异均无统计学意义(均P> 0.05)。p-FOXO3a(S253)/ FOXO3a 经 10μmol/L GI254023X 作用 24 h 后的比值为(0.866 7±0.075 8),PBS 组与 DMSO 组的比值分别 为(1.000 0±0.000 0)及(1.016 2±0.050 6),高于 GI254023X 组(P< 0.05);p-Akt(S473)/Akt 经 10 μmol/L GI254023X 作用 24 h 后的比值为(1.180 6±0.150 2),PBS 组与 DMSO 组的比值分别为(1.000 0±0.000 0) 及(0.893 2±0.041 3),低于 GI254023X 组(均P< 0.05)。GI254023X 能够使抗凋亡蛋白 B 细胞淋巴瘤因 子 -2(Bcl-2)表达显著降低(P< 0.05),促凋亡蛋白半胱氨酸天冬氨酸蛋白酶 3、半胱氨酸天冬氨酸蛋白 酶 9、促凋亡蛋白 Bcl-2 相关蛋白 X 表达均显著升高(P< 0.05)。 结论 使用 10 μmol/L 的 ADAM10 抑制 剂 GI254023X 处理 APPswe695 细胞能抑制其细胞活性,并通过 Akt/FOXO3a 信号通路诱导 APPswe695 细 胞凋亡。

    Abstract:

    Objective To investigate the effect of inhibiting A Disintegrin and Metalloproteinase 10 (ADAM10) on apoptosis of Alzheimer's disease APPswe695 cells, a model of Alzheimer's disease, and to explore its underlying mechanism. Methods APPswe695 cells were treated with the ADAM10 inhibitor GI254023X at concentrations of 1, 5, 10, and 20 μmol/L, with PBS and Dimethyl sulfoxide (DMSO) serving as blank and negative controls, respectively. Cell viability was assessed using the Cell Counting Kit-8 (CCK-8) assay, and protein expression levels of the serine/threonine kinase (Akt)/forkhead box protein O3a (FOXO3a) signaling pathway and apoptosis-related proteins were measured by Western blot. Results The total protein expression levels of serine/ threonine protein kinase (Akt) and Forkhead Box O3a (FOXO3a) in the GI254023X group were (0.973 0±0.157 7) and (1.149 8±0.196 7), respectively, showing no significant differences compared to the PBS and DMSO groups (P>0.05). However, the ratio of p-FOXO3a (S253)/FOXO3a after 24 h of treatment with 10 μmol/L GI254023X was (0.866 7±0.075 8), significantly lower than those of the PBS (1.000 0±0.000 0) and DMSO (1.016 2±0.050 6) groups (P< 0.05). Conversely, the ratio of p-Akt (S473)/Akt after 24 h of treatment with 10 μmol/L GI254023X was (1.180 6±0.150 2), significantly higher than those of the PBS (1.000 0± 0.000 0) and DMSO (0.893 2±0.041 3) groups (P< 0.05). Additionally, GI254023X significantly reduced the expression of the anti-apoptotic protein B-cell lymphoma-2 (Bcl-2) (P < 0.05) and significantly increased the expression of the pro-apoptotic proteins caspase-3, caspase-9, and Bcl-2-associated X protein (Bax) (P< 0.05)Conclusions Treatment of APPswe695 cells with 10 μmol / L ADAM10 inhibitor GI254023X significantly inhibited cell viability and induced apoptosis of APPswe695 cells through the Akt / FOXO3a signaling pathway.

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王雨欣,何静,张伟,张旭,王蓉.抑制去整合素金属蛋白酶10对阿尔茨海默病APPswe695细胞凋亡的影响及其作用机制[J].神经疾病与精神卫生,2025,25(3):202-207
DOI :10.3969/j. issn.1009-6574.2025.03.008.

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  • 在线发布日期: 2025-03-28