Oral Cancer
Expert Opin Ther Targets.2014 Oct;18(10):1109-20.
Pterostilbenesuppresses oral cancer cell invasion by inhibiting MMP-2 expression.
Lin CW1
Abstract
OBJECTIVE: Polyphenol compounds, present in a wide variety of natural plants, exhibit antioxidant and free radical scavenging ability and induce apoptosis in various cancer cells. However, the effect of pterostilbene on oral cancer cell metastasis has not been clarified.
RESEARCH DESIGN AND METHODS: The present study aimed to examine the anti-metastatic properties of pterostilbene in human oral squamous cell carcinoma (SCC)-9 cells.
RESULTS: In this study, pterostilbene treatment significantly inhibited migration/invasion capacities of SCC-9 cells in vitro. The results of zymography and western blotting revealed that the activities and protein levels of the MMP-2 and urokinase-type plasminogen activator (u-PA) was inhibited by pterostilbene. Western blot analysis also showed that pterostilbene inhibits the phosphorylation of Akt, extracellular signal-regulated kinase 1/2 and p38. Determinations of the mRNA levels, real-time polymerase chain reaction and promoter assays were conducted to evaluate the inhibitory effects of pterostilbene on MMP-2 and u-PA expression in SCC-9 cells. Such inhibitory effects were associated with the upregulation of tissue inhibitor of metalloproteinase-2, plasminogen activator inhibitor-1 and the downregulation of the transcription factors of NF-κB, SP-1
CONCLUSIONS: Pterostilbene may have potential use as a chemopreventive agent against oral cancer metastasis.
KEYWORDS: MMP-2; migration; oral cancer; pterostilbene; urokinase-type plasminogen activator
PMID: 25109417
Oral Oncol.2015 Jun;51(6):593-601. doi: 10.1016/j.oraloncology.2015.03.007. Epub 2015 Apr 14.
Pterostilbene
Ko CP1
Abstract
OBJECTIVES: Extensive research supports the administration of herbal medicines or natural foods during cancer therapy. Pterostilbene, a naturally occurring phytoalexin, has various pharmacological activities, including antioxidant activity, cancer prevention activity, and cytotoxicity to many cancers. However, the effect of pterostilbene on the autophagy of tumor cells has not been clarified.
MATERIALS AND METHODS: In this study, the unique effects of pterostilbene on the autophagy of human oral cancer cells were investigated.
RESULTS: The results of this study showed that pterostilbene effectively inhibited the growth of human oral cancer cells by inducing cell cycle arrest and apoptosis. In addition, the formation of acidic vesicular organelles and LC3-II production also demonstrated that pterostilbene induced autophagy. Administering 3-methylamphetamine (3-MA) and bafilomycin A1 (BafA1) exerted differing effects on the pterostilbene-induced death of human oral cancer cells. Pterostilbene-induced autophagy was triggered by activation of JNK1/2 and inhibition of Akt, ERK1/2, and p38.
CONCLUSION: In conclusion, this study demonstrated that pterostilbene caused autophagy and apoptosis in human oral cancer cells, suggesting that pterostilbene could serve as a new and promising agent for treating human oral cancer.
Copyright © 2015 Elsevier Ltd. All rights reserved.
KEYWORDS: Apoptosis; Autophagy; MAPK; Oral cancer; Phytoalexin; Pterostilbene
PMID: 25883032
PLoS One.2015 Nov 4;10(11):e0141719. doi: 10.1371/journal.pone.0141719. eCollection 2015.
Potential Compounds for Oral Cancer Treatment: Resveratrol, Nimbolide, Lovastatin, Bortezomib, Vorinostat, Berberine, Pterostilbene, Deguelin, Andrographolide, and Colchicine.
Bundela S1,2, Sharma A2, Bisen PS1,3.
Abstract
Oral cancer is one of the main causes of cancer-related deaths in South-Asian countries. There are very limited treatment options available for oral cancer. Research endeavors focused on
PMID: 26536350
Cell Physiol Biochem.2016;38(3):1226-44. doi: 10.1159/000443071. Epub 2016 Mar 17.
PterostilbeneInhibits the Growth of Human Esophageal Cancer Cells by Regulating Endoplasmic Reticulum Stress.
Feng Y, Yang Y, Fan C, Di S, Hu W, Jiang S, Li T, Ma Z, Chao D, Feng X, Xin Z, Pang S, Li X, Yan X.
Abstract
BACKGROUND/AIMS: Pterostilbene(PTE), a natural dimethylated resveratrol analog from blueberries, is known to have diverse pharmacological activities, including anticancer properties. In this study, we investigated the anticancer activity of PTE against human esophageal cancer cells both in vitro and in vivo and explored the role of endoplasmic reticulum (ER) stress (ERS) signaling in this process.
METHODS: Cell viability, the apoptotic index, Caspase 3 activity, adhesion, migration, reactive oxygen species (ROS) levels, and glutathione (GSH) levels were detected to explore the effect of PTE on human EC109 esophageal cancer cells. Furthermore, siRNA transfection and a chemical inhibitor were employed to confirm the role of ERS.
RESULTS: PTE treatment dose- and time-dependently decreased the viability of human esophageal cancerEC109 cells. PTE also decreased tumor cell adhesion, migration
CONCLUSIONS: Overall, the results indicate that PTE is a potent anti-cancer pharmaceutical against human esophageal cancer, and the possible mechanism involves the activation of
© 2016 S. Karger AG, Basel.
PMID: 26982591