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- Title
Antimetastatic Effects of Celastrus orbiculatus on Human Gastric Adenocarcinoma by Inhibiting Epithelial–Mesenchymal Transition and NF-κB/Snail Signaling Pathway.
- Authors
Zhu, Yaodong; Liu, Yanqing; Qian, Yayun; Dai, Xiaojun; Yang, Lin; Chen, Jue; Guo, Shiyu; Hisamitsu, Tadashi
- Abstract
Aim of the Study. Celastrus orbiculatus has been used as a folk medicine in China for the treatment of many diseases. In the laboratory, the ethyl acetate extract of Celastrus orbiculatus (COE) displays a wide range of anticancer functions. However, the inhibition of the metastasis mechanism of COE in gastric cancer cells has not been investigated so far. The present study was undertaken to determine if the antimetastatic effects of COE were involved in inhibition of the epithelial–mesenchymal transition (EMT) of human gastric adenocarcinoma SGC-7901 cells. Methods. The adhesion, invasion, and migration of SGC-7901 cells were determined by COE treatment in vitro, using Matrigel-coated plate, transwell membrane chamber, and wound healing models, respectively. In vivo, the growth-inhibiting and antimetastatic effects of COE on the nude mice model of gastric cancer were tested and the mechanisms were explored. The expression of EMT markers and nuclear factor κB (NF-κB)/Snail signaling pathway were evaluated by using western blotting and immunohistochemistry. Results. Treatment with COE dose-dependently inhibited the proliferation, adhesion, invasion, and migration of SGC-7901 cells in vitro, which was realized by enhancing the expression of E-cadherin and reducing N-cadherin and vimentin expression. Moreover, COE suppressed the activation of NF-κB/Snail signaling pathway induced by tumor necrosis factor-α. In addition, COE effectively suppressed tumor growth and metastasis in the nude mice model due to reduced expression of N-cadherin, vimentin, NF-κB p65, and Snail and increased expression of E-cadherin in the tumor tissues. Conclusion. Our findings provided new evidence that COE is an effective inhibitor of metastatic potential of SGC-7901 cells through suppression of EMT and NF-κB/Snail signal pathway. Based on these findings, COE may be considered a novel anticancer agent for the treatment of metastasis in gastric cancer.
- Subjects
ADENOCARCINOMA; CANCER treatment; PHYTOTHERAPY; TUMOR treatment; METASTASIS; GASTROINTESTINAL tumors treatment; ANALYSIS of variance; ANIMAL experimentation; ANIMALS; BIOLOGICAL assay; CELL culture; CELL physiology; CELLULAR signal transduction; CHI-squared test; EPITHELIAL cells; EPITHELIUM; IMMUNOHISTOCHEMISTRY; PROTEINS; RATS; WOUND healing; XENOGRAFTS; DATA analysis; DATA analysis software; DESCRIPTIVE statistics
- Publication
Integrative Cancer Therapies, 2015, Vol 14, Issue 3, p271
- ISSN
1534-7354
- Publication type
Article
- DOI
10.1177/1534735415572880