Knockdown of Pyruvate Kinase M Inhibits Cell Growth and Migration by Reducing NF-kB Activity in Triple-Negative Breast Cancer Cells

Chaobing Ma, Xueyin Zu, Kangdong Liu, Ann M. Bode, Zigang Dong, Zhenzhen Liu, Dong Joon Kim

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Altered genetic features in cancer cells lead to a high rate of aerobic glycolysis and metabolic reprogramming that is essential for increased cancer cell viability and rapid proliferation. Pyruvate kinase muscle (PKM) is a rate-limiting enzyme in the final step of glycolysis. Herein, we report that PKM is a potential therapeutic target in triple-negative breast cancer (TNBC) cells. We found that PKM1 or PKM2 is highly expressed in TNBC tissues or cells. Knockdown of PKM significantly suppressed cell proliferation and migration, and strongly reduced S phase and induced G2 phase cell cycle arrest by reducing phosphorylation of the CDC2 protein in TNBC cells. Additionally, knockdown of PKM significantly suppressed NF-kB (nuclear factor kappa-light-chain-enhancer of activated B cells) activity by reducing the phosphorylation of p65 at serine 536, and also decreased the expression of NF-kB target genes. Taken together, PKM is a potential target that may have therapeutic implications for TNBC cells.

Original languageEnglish (US)
Pages (from-to)628-636
Number of pages9
JournalMolecules and cells
Volume42
Issue number9
DOIs
StatePublished - Sep 30 2019

Keywords

  • NF-kB
  • PKM1
  • PKM2
  • cell cycle
  • triple-negative breast cancer cells

PubMed: MeSH publication types

  • Journal Article

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