Tianjin Medical Journal ›› 2023, Vol. 51 ›› Issue (9): 922-927.doi: 10.11958/20221825

• Cell and Molecular Biology • Previous Articles     Next Articles

Effects of aconitine regulating miR-181d-5p/DDX3 axis on proliferation and apoptosis of HeLa cells of cervical cancer

ZHAO Dandan1(), ZHANG Sue1, MIAO Liye1, WANG Yan2   

  1. 1. Department of Obstetrics, the Fourth Hospital of Shijiazhuang, Shijiazhuang 050032, China
    2. Department of Gynecology, the Fourth Hospital of Shijiazhuang, Shijiazhuang 050032, China
  • Received:2022-11-14 Revised:2023-03-14 Published:2023-09-15 Online:2023-09-13

Abstract:

Objective To investigate effects of aconitine on proliferation and apoptosis of cervical cancer HeLa cells by regulating the microRNA-181d-5p (miR-181d-5p)/DEAD-box RNA helicase 3 (DDX3) axis. Methods Cervical cancer HeLa cells were treated with different doses of aconitine, and cell proliferation was detected by tetramethylazolium salt method to determine the dose. HeLa cells were divided into the control group (normal culture, no treatment), the aconitine low dose group (4 mg/L), the aconitine medium dose group (8 mg/L), the aconitine high dose group (16 mg/L), the cisplatin group (5 mg/L), the aconitine high dose + miR-NC group [16 mg/L aconitine + transfected with miR-181d-5p siRNA negative control (miR-NC) plasmid] and the aconitine high dose + miR-181d-5p low expression group [16 mg/L aconitine + transfected miR-181d-5p small interfering RNA (siRNA) plasmid]. Plate clone formation experiment and flow cytometry were used to detect the clonal formation number and apoptosis of HeLa cells in each group. Expression levels of miR-181d-5p and DDX3 messenger RNA (mRNA) in HeLa cells were detected by real-time fluorescent quantitative PCR. Western blot assay was used to detect expression levels of DDX3, Cyclin D1, proliferating cell nuclear antigen (PCNA), B cell lymphocytoma-2 (Bcl-2), Bcl-2 related X protein (Bax) and Caspase-3 protein in HeLa cells. Dual luciferase reporter gene experiment was used to verify the targeting relationship between miR-181d-5p and DDX3. Results HeLa cells were treated with 0.5-64 mg/L aconitine for 24 h, 48 h and 72 h, respectively, and HeLa cells were inhibited to varying degrees. Aconitine doses of 4 mg/L, 8 mg/L and 16 mg/L were selected for follow-up experiments. Compared with the control group, HeLa cell clonal formation number, DDX3 mRNA and protein, Cyclin D1, PCNA and Bcl-2 protein expression levels were decreased successively in the aconitine low, medium and high dose groups and the cisplatin groups (P<0.05), and the apoptosis rate, expression levels of miR-181d-5p, Bax and Caspase-3 protein were increased successively (P<0.05). Compared with the aconitine high dose group and the aconitine high dose + miR-NC group, HeLa cell clonal formation number, DDX3 mRNA and protein, Cyclin D1, PCNA and Bcl-2 protein expression levels were increased in the aconitine high dose + miR-181d-5p low expression group (P<0.05), and the apoptosis rate, expression levels of miR-181d-5p, Bax and Caspase-3 protein were decreased (P<0.05). Dual luciferase reporter gene detection confirmed the targeting relationship between miR-181d-5p and DDX3. Conclusion Aconitine can regulate the miR-181d-5p/DDX3 axis, promote the expression of miR-181d-5p, inhibit the expression of DDX3, and then inhibit the proliferation of cervical cancer HeLa cells and promote cell apoptosis.

Key words: aconitine, microRNA-181d-5p, DEAD-box RNA helicase 3, cervical cancer HeLa cells

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