Journal of Practical Oncology ›› 2020, Vol. 34 ›› Issue (1): 37-42.doi: 10.11904/j.issn.1002-3070.2020.01.007

• Basic Research • Previous Articles     Next Articles

Effects of PFKFB4 on invasion and migration of gastric cancer cells and its mechanism

WANG Ming, SUN Tiye   

  1. Department of Oncology,Yanda Hospital,Sanhe 065201,China
  • Received:2019-06-20 Revised:2019-09-30 Published:2020-02-20

Abstract: Objective The Objective of this study was to investigate whether kinase PFKFB4 was involved in the regulating invasion and migration of gastric cancer cells and its mechanism of action.Methods The SRC family proteins interacting with PFKFB4 were detected by immunoprecipitation.The downstream regulatory genes were identified by transcriptome sequencing.The relationship between downstream genes and phosphorylated SRC proteins was verified by Western blot and qRT-PCR.The effect of PFKFB4 related to pathway on abilities of migration and invasion was detected in gastric cancer cells by Transwell assay.Results PFKFB4 could interact with SRC-2.The expression of SRC-2 was not affected by PFKFB4.But PFKFB4 could phosphorylate serine at site 698 of SRC-2.After phosphorylation of SRC-2 Ser698,downstream regulatory gene-LKB1 at levels of mRNA and protein was down-regulated.As a result,the migration and invasion ability of gastric cancer cells was enhanced.Conclusion PFKFB4 negatively regulates the expression of tumor suppressor gene-LKB1 by phosphorylation of SRC-2,and enhances the migration and invasion of gastric cancer cells.

Key words: PFKFB4, Phosphorylation, SRC-2, Gastric cancer cells, Invasion, Migration

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