Hinokitiol inhibits migration of A549 lung cancer cells via suppression of MMPs and induction of antioxidant enzymes and apoptosis

Thanasekaran Jayakumar, Chao Hong Liu, Guan Yi Wu, Tzu Yin Lee, Manjunath Manubolu, Cheng Ying Hsieh, Chih Hao Yang, Joen Rong Sheu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Hinokitiol, a natural monoterpenoid from the heartwood of Calocedrus formosana, has been reported to have anticancer effects against various cancer cell lines. However, the detailed molecular mechanisms and the inhibiting roles of hinokitiol on adenocarcinoma A549 cells remain to be fully elucidated. Thus, the current study was designed to evaluate the effect of hinokitiol on the migration of human lung adenocarcinoma A549 cells in vitro. The data demonstrates that hinokitiol does not effectively inhibit the viability of A549 cells at up to a 10 µM concentration. When treated with non-toxic doses (1–5 µM) of hinokitiol, the cell migration is markedly suppressed at 5 µM. Hinokitiol significantly reduced p53 expression, followed by attenuation of Bax in A549 cells. A dose-dependent inhibition of activated caspase-9 and -3 was observed in the presence of hinokitiol. An observed increase in protein expression of matrix metalloproteinases (MMPs) -2/-9 in A549 cells was significantly inhibited by hinokitiol. Remarkably, when A549 cells were subjected to hinokitiol (1–5 µM), there was an increase in the activities of antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) from the reduction in cells. In addition, the incubation of A549 cells with hinokitiol significantly activated the cytochrome c expression, which may be triggered by activation of caspase-9 followed by caspase-3. These observations indicate that hinokitiol inhibited the migration of lung cancer A549 cells through several mechanisms, including the activation of caspases-9 and -3, induction of p53/Bax and antioxidant CAT and SOD, and reduction of MMP-2 and -9 activities. It also induces cytochrome c expression. These findings demonstrate a new therapeutic potential for hinokitiol in lung cancer chemoprevention.

Original languageEnglish
Article number939
JournalInternational Journal of Molecular Sciences
Volume19
Issue number4
DOIs
Publication statusPublished - Mar 22 2018

    Fingerprint

Keywords

  • A549 cells
  • Antioxidant enzymes
  • Caspases
  • Hinokitiol
  • Migration
  • MMPs
  • P53/Bax
  • Matrix Metalloproteinase 2/metabolism
  • A549 Cells
  • Caspase 3/metabolism
  • Cell Movement/drug effects
  • Humans
  • Apoptosis/drug effects
  • Cytochromes c/metabolism
  • Matrix Metalloproteinases/metabolism
  • Monoterpenes/pharmacology
  • Superoxide Dismutase/metabolism
  • Cell Proliferation/drug effects
  • Caspase 9/metabolism
  • Catalase/metabolism
  • Tropolone/analogs & derivatives

ASJC Scopus subject areas

  • Molecular Biology
  • Spectroscopy
  • Catalysis
  • Inorganic Chemistry
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry

Cite this