NDLI: ROS-mediated activation of JNK/p38 contributes partially to the pro-apoptotic effect of ajoene on cells of lung adenocarcinoma

Content Provider	Springer Nature Link
Author	Wang, Yingyi Sun, Zhao Chen, Shuchang Jiao, Yuchen Bai, Chunmei
Copyright Year	2015
Abstract	Ajoene, a garlic-derived organosulfur compound, exerts anti-tumorigenic effect against various cancers. However, little is known about the biological effect of ajoene on lung adenocarcinoma, an aggressive malignancy with dismal prognosis. We investigated the biological effect of ajoene on lung adenocarcinoma and the underlying pathway. Lung adenocarcinoma cells A549, NCI-H1373, and NCI-H1395, along with the noncancerous lung bronchus cells BEAS-2B, were used. MTT test showed that ajoene (25 μM) reduces viability of lung adenocarcinoma cells but not the noncancerous BEAS-2B cells. Bromodeoxyuridine incorporation assay revealed that ajoene inhibits proliferation of lung adenocarcinoma cells. Treatment of lung adenocarcinoma cells with ajoene enhances apoptosis and ROS generation in a time- and dose-dependent fashion. Abrogation of caspase activation by zVAD-fmk completely prevents the ajoene-induced apoptosis; whereas block of ROS generation by N-acetylcysteine partly abolishes the ajoene-induced apoptosis. ROS-mediated induction of apoptosis contributes partially to the anti-tumorigenic property of ajoene observed, a phenomenon also confirmed by xenograft tumor study. Mitogen activated protein kinases (MAPKs), pivots of ROS-mediated signaling pathway, are activated upon ajoene treatment; Jun-N-terminal kinase (JNK)/p38 activations are required for signaling pathway underlying the ajoene-induced apoptosis. Our results suggest that ROS-mediated activation of JNK/p38 contributes partially to the pro-apoptotic action of ajoene on cells of lung adenocarcinoma. Ajoene may be a promising chemotherapeutic agent for lung adenocarcinoma.
Starting Page	3727
Ending Page	3738
Page Count	12
File Format	PDF
ISSN	10104283
Journal	Tumor Biology
Volume Number	37
Issue Number	3
e-ISSN	14230380
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-10-14
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Ajoene Lung Adenocarcinoma Apoptosis ROS MAPKs Cancer Research
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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