Journal of Jilin University(Medicine Edition) ›› 2021, Vol. 47 ›› Issue (3): 637-643.doi: 10.13481/j.1671-587X.20210313

• Research in basic medicine • Previous Articles     Next Articles

Effect of metformin on proliferation of lung cancer A549 cells through PI3K/AKT/GSK3β signaling pathway

Chunqing MU1,Lei ZHOU1,Nan ZHAO1,Hong WANG1,Zhi LI2()   

  1. 1.Institute of Translational Medicine,First Affiliated Hospital,Jinzhou Medical University,Jinzhou 121000,China
    2.Institute of Translational Medicine,Jinzhou Medical University,Jinzhou 121000,China
  • Received:2020-08-19 Online:2021-05-28 Published:2021-05-28
  • Contact: Zhi LI E-mail:cljlizhi@163.com

Abstract: Objective

To investigate the effect of metformin on the proliferation of the non-small cell lung cancer A549 cells ,and to clarify its possible mechanism.

Methods

The A549 cells were divided into control group and different concentrations (1, 2, 4, 8, 16 and 32 mmol·L-1) of metformin groups.MTT method was used to detect the proliferation rates of A549 cells in various groups after treated for 24, 48 and 72 h; clone formation experiment was used to detect the clone formation number of A549 cells in various groups; cell scratch test was used to detect the migration rates of A549 cells in various groups; RT-PCR method was used to detect the expression levels of phosphoinositide-3-kinase (PI3K), protein kinase B (AKT), and glycogen-synthase kinase-3β (GSK3β) mRNA in the A549 cells in various groups; Western blotting method was used to detect the expression levels of PI3K, PI3K(p-PI3K), AKT, phosphorylated AKT(p-AKT), GSK3β ,and phosphorylated GSK3β (p-GSK3β) proteins in the A549 cells in various groups.

Results

Compared with control group, the proliferation rates of lung cancer A549 cells in different concentrations of metformin groups after treated for 24, 48 and 72 h were decreased (P<0.05); compared with control group, the number of clone formation in the A549 cells in 2 and 8 mmol·L-1 metformin groups was decreased (P<0.05); compared with control group, the migration rates of the A549 cells in 2 and 8 mmol·L-1 metformin groups were decreased (P<0.05); compared with control group, the expression levels of PI3K, AKT and GSK3β mRNA in the A549 cells in 2 and 8 mmol·L-1 metformin groups were significantly decreased (P<0.05); compared with control group, the expression levels of PI3K, p-PI3K, p-AKT, and p-GSK3β proteins in the A549 cells in 2 and 8 mmol·L-1 metformin groups were significantly decreased (P<0.05).

Conclusion

Metformin can inhibit the proliferation and migration of lung cancer A549 cells, and its mechanism may be related to the inhibition of PI3K/AKT/GSK3β signaling pathway.

Key words: lung cancer, metformin, proliferation, migration, PI3K/AKT/GSK3β signaling pathway

CLC Number: 

  • R734.2