基础研究

氯普噻吨调节Akt/mTOR通路对人急性髓系白血病细胞自噬和凋亡的影响

  • 王瑞娟 ,
  • 李超 ,
  • 段丽娟 ,
  • 尚淼 ,
  • 杨如玉
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  • 南阳市中心医院血液内科 (河南 南阳 473000 )

收稿日期: 2023-02-15

  网络出版日期: 2023-11-15

基金资助

河南省医学科技攻关项目(2022030024087)

Impacts of chlorprothixene on autophagy and apoptosis in human acute myeloid leukemia cells by regulating Akt/mTOR pathway

  • Ruijuan WANG ,
  • Chao LI ,
  • Lijuan DUAN ,
  • Miao SHANG ,
  • Ruyu. YANG
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  • Department of Hematology,Nanyang Central Hospital,Nanyang 473000,China

Received date: 2023-02-15

  Online published: 2023-11-15

摘要

目的 探讨氯普噻吨通过调节蛋白激酶B(Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)通路对人急性髓系白血病(AML)细胞自噬和凋亡的影响。 方法 以SKNO-1、MOLM-13两个细胞系为研究对象,0、20、40、60 μmol/L氯普噻吨分别处理SKNO-1、MOLM-13细胞6、12、24 h,CCK-8检测细胞增殖情况。实验分为4组,对照组正常培养、SC79组用5 mg/L SC79处理细胞2 h,氯普噻吨组用40 μmol/L氯普噻吨处理细胞12 h,氯普噻吨+SC79组在SC79组基础上添加40 μmol/L氯普噻吨处理细胞12 h。单丹磺酰尸胺(MDC)染色检测自噬的发生情况;流式细胞术检测细胞凋亡率;蛋白质免疫印迹检测自噬相关蛋白SQSTM1/p62、微管相关蛋白1轻链3B(LC3B),凋亡相关蛋白聚腺苷酸二磷酸核糖转移酶(PARP)、天冬氨酸特异性半胱氨酸蛋白酶3(caspase3)、激活型caspase3(cleaved caspase3)以及Akt/mTOR信号通路相关蛋白Akt、磷酸化(p)-Akt、mTOR、p-mTOR表达情况。 结果 在SKNO-1、MOLM-13细胞中,6、12、24 h时,与0 μmol/L氯普噻吨相比,20、40、60 μmol/L氯普噻吨处理后细胞增殖抑制率升高(P < 0.05);在同一时间点,随着氯普噻吨浓度的升高,细胞增殖抑制率升高,40 μmol/L氯普噻吨处理细胞12 h进行接下来研究。在SKNO-1、MOLM-13细胞中,与对照组相比,SC79组细胞凋亡率、自噬小体阳性率,LC3B、PARP、cleaved caspase3/caspase3蛋白表达水平降低(P < 0.05),SQSTM1/p62、p-Akt/Akt、p-mTOR/mTOR蛋白表达水平升高(P < 0.05);而氯普噻吨组表现出相反趋势(P < 0.05);在SC79组基础上添加氯普噻吨,与氯普噻吨组相比,细胞凋亡率、自噬小体阳性率,LC3B、PARP、cleaved caspase3/caspase3蛋白表达水平降低(P < 0.05),SQSTM1/p62、p-Akt/Akt、p-mTOR/mTOR蛋白表达水平升高(P < 0.05)。 结论 氯普噻吨能够抑制Akt/mTOR通路促进人AML细胞自噬和凋亡。

本文引用格式

王瑞娟 , 李超 , 段丽娟 , 尚淼 , 杨如玉 . 氯普噻吨调节Akt/mTOR通路对人急性髓系白血病细胞自噬和凋亡的影响[J]. 实用医学杂志, 2023 , 39(20) : 2584 -2590 . DOI: 10.3969/j.issn.1006-5725.2023.20.005

Abstract

Objective To investigate the impacts of chlorprothixene on autophagy and apoptosis in human acute myeloid leukemia (AML) cells by regulating the protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway. Methods Two cell lines, SKNO-1 and MOLM-13, were used as the research objects, and they were treated with (0, 20, 40, 60) μmol/L chlorprothixene for (6, 12, 24) h, respectively, CCK-8 was performed to detect cell proliferation.Experiments were divided into control group (normal culture), SC79 group (5 mg/L SC79 treated cells for 2 h),chlorprothixene group (40 μmol/L chloroprotixol treated cells for 12 h), chlorprothixene + SC79 group (40 μmol/L chlorprothixene was added to the cells for 12 h on the basis of the group),monodansylcadaverine (MDC) staining was performed to measure the occurrence of autophagy;flow cytometry was performed to measure cell apoptosis rate;Western blot was performed to measure autophagy-related protein SQSTM1/p62, microtubule-related protein 1 light chain 3B (LC3B), apoptosis-related protein poly (ADP-ribosyltransferase) (PARP), aspartate-specific cysteine protease 3 (caspase3), activated caspase3 (cleaved caspase3) and Akt/mTOR signaling pathway related proteins Akt, phosphorylated (p)-Akt, mTOR and p-mTOR. Results In SKNO-1 and MOLM-13 cells, at (6, 12, 24) h, compared with 0 μmol/L chlorprothixene, (20, 40, 60) μmol/L chlorprothixene treatment increased the inhibition rate of cell proliferation (P < 0.05);at the same time point, as the concentration of chlorprothixene increased, the inhibition rate of cell proliferation increased, and 40 μmol/L chlorprothixene treatment for 12 h was used for the next study.In SKNO-1 and MOLM-13 cells, compared with the control group, the apoptosis rate, autophagosome positive rate, LC3B, PARP, cleaved caspase3/caspase3 protein expression levels in SC79 group decreased (P < 0.05), the SQSTM1/p62, p-Akt/Akt and p-mTOR/mTOR protein expression levels increased (P < 0.05);the chlorprothixene group showed the opposite trends (P < 0.05);after adding chlorprothixene on the basis of SC79 group, the apoptosis rate, autophagosome positive rate, LC3B, PARP, cleaved caspase3/caspase3 protein expression levels decreased than chlorprothixene group (P < 0.05), the protein expression levels of SQSTM1/p62, p-Akt/Akt and p-mTOR/mTOR increased (P < 0.05). Conclusion Chlorprothixene can inhibit the Akt/mTOR pathway and promote autophagy and apoptosis in human AML cells.

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