PUBLICATION

The Phenoxyphenol Compound 4-HPPP Selectively Induces Antiproliferation Effects and Apoptosis in Human Lung Cancer Cells through Aneupolyploidization and ATR DNA Repair Signaling

Authors
Liu, W., Wu, C.Y., Lu, M.J., Chuang, Y.J., Tsai, E.M., Leu, S., Lin, I.L., Ko, C.J., Chiu, C.C., Chang, W.T.
ID
ZDB-PUB-200225-34
Date
2020
Source
Oxidative medicine and cellular longevity   2020: 5167292 (Journal)
Registered Authors
Chuang, Yung-Jen
Keywords
none
MeSH Terms
  • Animals
  • Antineoplastic Agents/pharmacology
  • Antineoplastic Agents/therapeutic use*
  • Apoptosis/drug effects*
  • Ataxia Telangiectasia Mutated Proteins/genetics*
  • Cell Line, Tumor
  • Cell Proliferation/drug effects*
  • DNA Repair/drug effects*
  • Humans
  • Lung Neoplasms/drug therapy*
  • Lung Neoplasms/pathology
  • Phenols/pharmacology*
  • Zebrafish
PubMed
32089770 Full text @ Oxid Med Cell Longev
Abstract
Lung cancer is a leading cause of cancer death worldwide, and non-small-cell lung cancer (NSCLC) accounts for 85% of lung cancer, which is highly metastatic, leading to the poor survival rate of patients. We recently reported that 4-[4-(4-hydroxyphenoxy)phenoxy]phenol (4-HPPP), a phenoxyphenol, exerts antihepatoma effects by inducing apoptosis and autophagy. In this study, we further examined the effect of 4-HPPP and its analogs on NSCLC cells. Colony formation assays showed that 4-HPPP exerts selective cytotoxicity against NSCLC H1299 cells; furthermore, the inhibitory effect of 4-HPPP on the proliferation and migration of NSCLC cells was validated using an in vivo zebrafish-based tumor xenograft assay. The flow cytometry-based dichlorofluorescein diacetate (DCF-DA) assays indicated that 4-HPPP caused an increase in reactive oxygen species (ROS) in NSCLC cells, and Western blot assays showed that the major ROS scavenging enzymes superoxide dismutases- (SODs-) 1/2 were upregulated, whereas peroxidase (PRX) was downregulated. Furthermore, 4-HPPP caused both aneuploidization and the accumulation of γH2AX, a sensor of DNA damage, as well as the activation of double-strand break (DSB) markers, especially Ataxia-telangiectasia-mutated and Rad3-related (ATR) in NSCLC cells. Our present work suggests that the antiproliferative effects of 4-HPPP on lung cancer cells could be due to its phenoxyphenol structure, and 4-HPPP could be a candidate molecule for treating NSCLC by modulating ROS levels and lowering the threshold of polyploidy-specific cell death in the future.
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