4.6 Article

A Low Dose Combination of Withaferin A and Caffeic Acid Phenethyl Ester Possesses Anti-Metastatic Potential In Vitro: Molecular Targets and Mechanisms

期刊

CANCERS
卷 14, 期 3, 页码 -

出版社

MDPI
DOI: 10.3390/cancers14030787

关键词

ashwagandha; withaferin A (Wi-A); propolis; caffeic acid phenethyl ester (CAPE); combination Wi-ACAPE; inhibition; metastasis; angiogenesis; cancer therapy

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资金

  1. AIST (Japan)
  2. DBT (Government of India) [BT/BI/14/042/2017]
  3. Japan Science and Technology Agency (JST)-SPRING Fellowship [JPMJSP2124]

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A combination of low doses of Wi-A and CAPE, two natural compounds found in Ashwagandha leaves and propolis, respectively, exhibits potent anti-migratory and anti-angiogenic activities. This combination acts on cell adhesion/tight junction proteins and inhibits Wnt/β-catenin signaling pathways, leading to the downregulation of EMT-signaling proteins. These findings suggest that this combination may be a potential therapeutic option for metastatic and aggressive cancers.
Simple Summary Cancer therapy suffers from its high cost and high rate of adverse effects and relapse of the disease. Hence, the new (preferably natural), economic and safer therapeutic as well preventive measures have been on demand and have been subject of priority research. We have, earlier, demonstrated anticancer activity in the extracts of Ashwagandha leaves and propolis. A combination of Wi-A (an active anticancer ingredient in Ashwagandha extract) and CAPE (an active anticancer ingredient in propolis) was earlier shown to offer higher and cancer cell-selective cytotoxicity. In the present study, we report an anti-metastasis activity in the low dose combination of Wi-A and CAPE along with its mechanism of action and propose its use in cancer metastasis treatment. Withaferin A (Wi-A) and Caffeic Acid Phenethyl Ester (CAPE) are the bioactive ingredients of Ashwagandha (Withania somnifera) and propolis, respectively. Both of these natural compounds have been shown to possess anticancer activity. In the present study, we recruited a low dose of each of these compounds and developed a combination that exhibited remarkably potent anti-migratory and anti-angiogenic activities. Extensive molecular analyses including a cDNA array and expression analyses of the specific gene targets demonstrated that such activities are mediated through their effect on cell adhesion/tight junction proteins (Claudins, E-cadherin), inhibition of canonical Wnt/beta-catenin signaling pathways and the consequent downregulation of EMT-signaling proteins (Vimentin, MMPs, VEGF and VEGFR) that play a critical role in cancer metastasis. The data supported that this novel combination of Wi-A and CAPE (Wi-ACAPE, containing 0.5 mu M of Wi-A and 10 mu M of CAPE) may be recruited for the treatment of metastatic and aggressive cancers and, hence, warrant further evaluation by recruiting a variety of experimental and clinical metastatic models.

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