Kosin Med J.  2016 Jun;31(1):30-40. 10.7180/kmj.2016.31.1.30.

Quercetin induces cell death by caspase-dependent and p38 MAPK pathway in EGFR mutant lung cancer cells

• Lim EJ
• Heo J
• Kim YH

• KMID: 2328716
• DOI: http://doi.org/10.7180/kmj.2016.31.1.30

Abstract

OBJECTIVES
The aim of this study was whether quercetin induces cell death by caspase and MAPK signaling pathway in EGFR mutant lung cancer cells.
METHODS
PC-9 cells, EGFR mutant lung cancer cells, were treated various times and concentrations of quercetin and harvested and measured using MTT assay, DNA fragmentation, Western blotting, and FACS analysis.
RESULTS
Treatment with quercetin in PC-9 cells resulted in inhibition of cell growth through apoptosis. Quercetin-induced apoptosis was associated with caspase-dependent manner. Quercetin also significantly increased levels of phosphor-p38 and decreased levels of phosphor-ERK, indicating that quercetin induces p38 MAPK signaling pathway in PC-9 cells. Quecetin treatment also generated the release of cytochrome c in PC-9 cells; however, pretreatment with rotenone or z-LEHD-fmk, significantly attenuated quercetin-induced apoptosis.
CONCLUSIONS
Our data indicate that quercetin exhibits EGFR mutant lung cancer effects through apoptosis by caspase dependent and mitochondrial pathway.

Keyword

EGFR mutant; Lung cancer; MAPK; Mitochondria; Quercetin

MeSH Terms

Apoptosis
Blotting, Western
Cell Death*
Cytochromes c
DNA Fragmentation
Lung Neoplasms*
Lung*
Mitochondria
p38 Mitogen-Activated Protein Kinases*
Quercetin*
Rotenone
Cytochromes c
Quercetin
Rotenone
p38 Mitogen-Activated Protein Kinases