吉林大学学报(医学版) ›› 2024, Vol. 50 ›› Issue (1): 88-96.doi: 10.13481/j.1671-587X.20240111

• 基础研究 • 上一篇    下一篇

可溶性CD40配体通过长链非编码RNA linc00239对THP-1细胞生物学行为的影响

封忠昕(),李梅   

  1. 贵州医科大学附属医院血液科,贵州 贵阳 550004
  • 收稿日期:2023-04-11 出版日期:2024-01-28 发布日期:2024-01-31
  • 通讯作者: 封忠昕 E-mail:fengsuyan2006@126.com
  • 作者简介:封忠昕(1978-),男,江西省抚州市人,主任医师,医学博士,主要从事血液系统肿瘤诊治方面的研究。
  • 基金资助:
    贵州省卫健委科学技术基金项目(gzwjkj2020-1-082)

Effect of soluble CD40 ligand on biological behavior of THP-1 cells through long non-coding RNA linc00239

Zhongxin FENG(),Mei LI   

  1. Department of Hematology,Affiliated Hospital,Guizhou Medical University,Guiyang 550004,China
  • Received:2023-04-11 Online:2024-01-28 Published:2024-01-31
  • Contact: Zhongxin FENG E-mail:fengsuyan2006@126.com

摘要:

目的 探讨CD40配体(CD40L)通过长链非编码RNA(lncRNA) linc00239对人单核细胞白血病THP-1细胞生物学行为的影响,阐明其可能的作用机制。 方法 构建linc00239过表达载体(pcDNA-linc00239)和干扰载体(sh-linc00239),转染至THP-1细胞,采用实时荧光定量PCR(RT-qPCR)法检测转染效率。THP-1细胞分为对照组、空载体(vector)组、pcDNA-linc00239组、sh-linc00239组、vector+CD40L组、pcDNA-linc00239+CD40L组和sh-linc00239+CD40L组。RT-qPCR法检测各组细胞中linc00239表达水平,CCK-8法检测各组细胞增殖活性,流式细胞术检测各组不同细胞周期细胞百分率和细胞凋亡率,RT-qPCR法和Western blotting法检测各组细胞中B细胞淋巴瘤2(Bcl-2)和Bcl-2关联X蛋白(Bax)mRNA和蛋白表达水平,Western blotting法检测各组细胞中蛋白激酶B(AKT)和磷酸化AKT(p-AKT)蛋白表达水平并计算p-AKT/AKT比值。 结果 与vector组比较,pcDNA-linc00239组细胞增殖活性和G2期细胞百分率明显升高(P<0.05或P<0.01),细胞中linc00239、Bcl-2 mRNA及蛋白表达水平和p-AKT/AKT比值明显升高(P<0.05或P<0.01),G1期细胞百分率、细胞凋亡率和细胞中Bax mRNA及蛋白表达水平明显降低(P<0.05);与vector组比较,sh-linc00239组和vector+CD40L组细胞增殖活性和G2期细胞百分率明显降低(P<0.05或P<0.01),细胞中linc00239、Bcl-2 mRNA和蛋白表达水平及p-AKT/AKT比值明显降低(P<0.05或P<0.01),G1期细胞百分率、细胞凋亡率和细胞中Bax mRNA及蛋白表达水平明显升高(P<0.05或P<0.01)。与pcDNA-linc00239组比较,pcDNA-linc00239+CD40L组细胞增殖活性和G2期细胞百分率明显降低(P<0.05或P<0.01),细胞中linc00239、Bcl-2 mRNA和蛋白表达水平及p-AKT/AKT比值明显降低(P<0.05或P<0.01),G1期细胞百分率、细胞凋亡率和细胞中Bax mRNA及蛋白表达水平明显升高(P<0.05或P<0.01);与sh-linc00239组比较,sh-linc00239+CD40L组细胞增殖活性和G2期细胞百分率明显降低(P<0.05或P<0.01),细胞中linc00239、Bcl-2 mRNA和蛋白表达水平及p-AKT/AKT比值明显降低(P<0.05或P<0.01),G1期细胞百分率、细胞凋亡率和细胞中Bax mRNA及蛋白表达水平明显升高(P<0.05或P<0.01)。 结论 CD40L可通过linc00239抑制THP-1细胞增殖和细胞周期进展,并诱导细胞凋亡。

关键词: CD40配体, 长链非编码RNA, linc00239, 急性髓系白血病, 细胞周期, 细胞凋亡

Abstract:

Objective To discuss the effect of CD40 ligand (CD40L) on the biological behavior of the human monocytic leukemia THP-1 cells through long non-coding RNA(lncRNA) linc00239,and to clarify its potential mechanism. Methods The linc00239 over-expression vector (pcDNA-linc00239) and interference vector (sh-linc00239) were constructed and transfected into the THP-1 cells.Real-time fluorescence quantitative PCR (RT-qPCR) method was used to detect the transfection efficiency. The THP-1 cells were divided into control group, vector group, pcDNA-linc00239 group, sh-linc00239 group, vector+CD40L group, pcDNA-linc00239+CD40L group, and sh-linc00239+CD40L group. RT-qPCR method was used to detect the expression levels of linc00239 in the cells in various groups; CCK-8 assay was used to detect the proliferation activities of the cells in various groups;flow cytometry was used to detect the percentages of the cells at different cell cycles and the apoptotic rates of the cells in various groups;RT-qPCR and Western blotting methods were used to to detect the expression levels of B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein (Bax) mRNA and proteins in the cells in various groups; Western blotting method was used to detect the expression levels of protein kinase B (AKT) and phosphorylated AKT (p-AKT) proteins in the cells in various groups,and the ratio of p-AKT/AKT was calculated. Results Compared with vector group, the proliferation activity of the cells and the percentage of the cells at G2 phase in pcDNA-linc00239 group were significantly increased (P<0.05 or P<0.01), the expression levels of linc00239, Bcl-2 mRNA and protein, and the ratio of p-AKT/AKT were significantly increased (P<0.05 or P<0.01),the percentage of the cells at G1 phase, apoptotic rate, and expression levels of Bax mRNA and protein in the cells were significantly decreased (P<0.05); compared with vector group, the proliferation activity of the cells and percentage of the cells at G2 phase, expression levels of linc00239, Bcl-2 mRNA and protein, and ratio of p-AKT/AKT in the cells in sh-linc00239 group and vector+CD40L group were significantly decreased (P<0.05 or P<0.01), while the percentage of the cells at G1 phase, apoptotic rate, and the expression levels of Bax mRNA and protein in the cells were significantly increased (P<0.05 or P<0.01);compared with pcDNA-linc00239 group, the proliferation activity of the cells and percentage of cells at G2 phase in pcDNA-linc00239+CD40L group were significantly decreased (P<0.05 or P<0.01), the expression levels of linc00239, Bcl-2 mRNA and protein,and ratio of p-AKT/AKT were significantly decreased (P<0.05 or P<0.01),while the percentage of cells at G1 phase, apoptotic rate, and the expression levels of Bax mRNA and protein were significantly increased (P<0.05 or P<0.01);compared with sh-linc00239 group, the proliferation activity of the cells and percentage of cells at G2 phase in sh-linc00239+CD40L group were significantly decreased (P<0.05 or P<0.01), the expression levels of linc00239, Bcl-2 mRNA and protein, and ratio of p-AKT/AKT were significantly decreased (P<0.05 or P<0.01),and the percentage of the cells at G1 phase, apoptotic rate, and expression levels of Bax mRNA and protein were significantly increased (P<0.05 or P<0.01). Conclusion CD40L can inhibit the proliferation and cell cycle progression of the THP-1 cells through linc00239 and induce the apoptosis.

Key words: CD40 ligand, Long non-coding RNA, linc00239, Acute myeloid leukemia, Cell cycle, Apoptosis

中图分类号: 

  • R733.71