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2-Pyrazine-PPD, a novel dammarane derivative, showed anticancer activity by reactive oxygen species-mediate apoptosis and endoplasmic reticulum stress in gastric cancer cells.
Abstract 20 (R)-Dammarane-3β, 12β, 20, 25-tetrol (25-OH-PPD), a ginsenoside, was derived from Panax ginseng (C. A. Meyer) and inhibited growth of several cancer cell lines. To improve the anti-cancer activity, we introduced the pyrazine ring to 25-OH-PPD and obtained the compound 20(R)-[2,3-β]-Pyrazine-dammarane-12β,20,25-triol (2-Pyrazine-PPD). we evaluated the anti-cancer activity of 2-Pyrazine-PPD and investigated the main anti-cancer mechanisms of 2-Pyrazine-PPD in gastric cancer cells. We found that 2-Pyrazine-PPD remarkably suppressed the proliferation of gastric cancer cells in a concentration-dependent...
Source: European Journal of Pharmacology - May 24, 2020 Category: Drugs & Pharmacology Authors: De Wang X, Li T, Li Y, Yuan WH, Zhao YQ Tags: Eur J Pharmacol Source Type: research

Auranofin, an Anti-rheumatic Gold Drug, Aggravates the Radiation-Induced Acute Intestinal Injury in Mice
Conclusion In this study, we found that a non-toxic dose of auranofin significantly aggravated the severity of the radiation-induced intestinal injury. This suggests that auranofin treatment can be an independent factor that influences the risk of intestinal complications after pelvic or abdominal radiotherapy. Ethics Statement All the protocols used in this study were approved by the Institutional Animal Care and Use Committee of the Korean Institute of Radiological and Medical Sciences (IACUC permit number: KIRAMS217-0007). Author Contributions H-JL, JS, and Y-BL designed the experiments. EL and JK conducted the exp...
Source: Frontiers in Pharmacology - April 23, 2019 Category: Drugs & Pharmacology Source Type: research

Helicobacter pylori induces Snail expression through ROS‐mediated activation of Erk and inactivation of GSK‐3β in human gastric cancer cells
Helicobacter pylori (H. pylori) infection has been known to be implicated in human gastric carcinogenesis. Snail, the zinc‐finger transcription factor known as a key inducer of changes in the cell shape and morphogenetic movement, is aberrantly overexpressed and correlates with lymph node metastasis in gastric cancer. In the present study, we investigated whether H. pylori could induce Snail activation to provoke these changes. Using a cell scatter assay, we noticed that human gastric cancer AGS cells infected with H. pylori underwent morphological changes as well as disruption of cell–cell interaction, which was then ...
Source: Molecular Carcinogenesis - January 26, 2016 Category: Molecular Biology Authors: Hoang‐Kieu‐Chi Ngo, Hee Geum Lee, Juan‐Yu Piao, Xiancai Zhong, Ha‐Na Lee, Hyeong‐Jun Han, Wonki Kim, Do‐Hee Kim, Young‐Nam Cha, Hye‐Kyung Na, Young‐Joon Surh Tags: Research Article Source Type: research

Helicobacter pylori induces Snail expression through ROS ‐mediated activation of Erk and inactivation of GSK‐3β in human gastric cancer cells
Helicobacter pylori (H. pylori) infection has been known to be implicated in human gastric carcinogenesis. Snail, the zinc‐finger transcription factor known as a key inducer of changes in the cell shape and morphogenetic movement, is aberrantly overexpressed and correlates with lymph node metastasis in gastric cancer. In the present study, we investigated whether H. pylori could induce Snail activation to provoke these changes. Using a cell scatter assay, we noticed that human gastric cancer AGS cells infected with H. pylori underwent morphological changes as well as disruption of cell–cell interaction, which was then ...
Source: Molecular Carcinogenesis - January 24, 2016 Category: Molecular Biology Authors: Hoang ‐Kieu‐Chi Ngo, Hee Geum Lee, Juan‐Yu Piao, Xiancai Zhong, Ha‐Na Lee, Hyeong‐Jun Han, Wonki Kim, Do‐Hee Kim, Young‐Nam Cha, Hye‐Kyung Na, Young‐Joon Surh Tags: Research Article Source Type: research