NSC746364, a G-quadruplex-stabilizing agent, suppresses cell growth of A549 human lung cancer cells through activation of the ATR/Chk1-dependent pathway

Yun Lung Chung, Chun Hsu Pan, Wei Hung Liou, Ming Jyh Sheu, Wen Hsin Lin, Tsung Chih Chen, Hsu Shan Huang, Chieh Hsi Wu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The telomere is considered to be a potential target for cancer therapy. NSC746364, a novel G-quadruplex-stabilizing agent, has been found to have cytotoxic effects on various cancer cells. To date, its pharmacological mechanisms are still unknown. The goal of this study was to investigate the molecular mechanisms of NSC746364 on the A549 human lung adenocarcinoma cell line. For this, we used a wide variety of in vitro assays. The intracellular signaling pathways including DNA damage sensing and response proteins, cell cycle regulatory proteins, and some key executors involved in apoptosis were evaluated in this study. Our study suggested that NSC746364 induced cell cycle arrest at the G2/M phase and triggers programing cell death on A549 human lung cancer cells, whose effects are modulated through the activation of the ATR/Chk1 pathway, the downregulation of cyclin B1 expression, and the activation of caspase-3. Consequently, our results indicated that NSC746364 may have therapeutic potential as a chemotherapy for non-small-cell lung cancers.

Original languageEnglish
Pages (from-to)7-17
Number of pages11
JournalJournal of Pharmacological Sciences
Volume124
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

G-Quadruplexes
Excipients
Lung Neoplasms
Growth
Cyclin B1
Cell Cycle Proteins
G2 Phase
Telomere
Cell Cycle Checkpoints
Non-Small Cell Lung Carcinoma
Caspase 3
Cell Division
DNA Damage
Neoplasms
Cell Death
Down-Regulation
Pharmacology
Apoptosis
Drug Therapy
Cell Line

Keywords

  • G-quadruplex-stabilizing agent
  • Non-small-cell lung cancer
  • NSC746364

ASJC Scopus subject areas

  • Pharmacology
  • Molecular Medicine

Cite this

NSC746364, a G-quadruplex-stabilizing agent, suppresses cell growth of A549 human lung cancer cells through activation of the ATR/Chk1-dependent pathway. / Chung, Yun Lung; Pan, Chun Hsu; Liou, Wei Hung; Sheu, Ming Jyh; Lin, Wen Hsin; Chen, Tsung Chih; Huang, Hsu Shan; Wu, Chieh Hsi.

In: Journal of Pharmacological Sciences, Vol. 124, No. 1, 2014, p. 7-17.

Research output: Contribution to journalArticle

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