Current Biotechnology ›› 2023, Vol. 13 ›› Issue (2): 311-317.DOI: 10.19586/j.2095-2341.2022.0099

• Articles • Previous Articles    

Effects of Melatonin Combined with Cisplatin on Proliferation, Apoptosis and Invasion of Cervical Cancer HeLa Cells

Yunyan SHEN(), Qi QIU()   

  1. Out-patient Office,the Second Affiliated Hospital of Soochow University,Jiangsu Suzhou 215004,China
  • Received:2022-06-10 Accepted:2022-10-09 Online:2023-03-25 Published:2023-04-07
  • Contact: Qi QIU

Abstract:

The aim of this study is to explore the effects of melatonin (MLT) combined with cisplatin (DDP) on the proliferation, apoptosis and invasion of cervical cancer HeLa cells. The cervical cancer HeLa cells were cultured in vitro. The effects of MLT, DDP and their combination on the proliferation of HeLa cells were detected by methyl thiazolyl tetrazolium (MTT) method. HeLa cells were divided into control group, melatonin group, cisplatin group and combination group. The melatonin group was treated with 2.5 mmol·L-1 melatonin, cisplatin group was treated with 5 μg·mL-1 cisplatin, and combination group was treated with 2.5 mmol·L-1 melatonin and 5 μg·mL-1 cisplatin. The proliferation, apoptosis and invasion of HeLa cells were detected by clone formation assay, flow cytometry, scratch assay and Transwell chamber assay, respectively. The expressions of Ki-67, PCNA, Bcl-2, Bax, N-cadherin, E-cadherin and Vimentin were detected by Western blot. MTT results showed that both MLT and DDP could significantly inhibit the proliferation of HeLa cells (P<0.05), and the inhibition rate was significantly increased with the increase of their concentration (P<0.05). Compared with MLT and DDP alone, their combination could significantly increased inhibition rate of HeLa cells proliferation. Compared with control group, clone formation rate, number of invaded cells per unit area, scratch healing rate, and related expression levels of Ki67, PCNA, Bcl-2 and E-cadherin proteins were decreased (P<0.05), while apoptosis rate and relative expression levels of Bax, N-cadherin and Vimentin proteins were increased in melatonin group and cisplatin group (P<0.05). Compared with melatonin group and cisplatin group, clone formation rate, number of invaded cells per unit area, scratch healing rate, and relative expression levels of Ki67, PCNA, Bcl-2 and E-cadherin proteins were decreased (P<0.05), while apoptosis rate and relative expression levels of Bax, N-cadherin and Vimentin proteins were increased in combination group (P<0.05). Results showed that, both MLT and DDP could inhibit the proliferation and invasion of HeLa cells, and promoted their apoptosis, the effects of their combination were more significant.

Key words: cervical cancer, melatonin, cisplatin, HeLa cell, cell proliferation, apoptosis

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