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Molecules 2016, 21(6), 727; doi:10.3390/molecules21060727

Aqueous Extract of Paris polyphylla (AEPP) Inhibits Ovarian Cancer via Suppression of Peroxisome Proliferator-Activated Receptor-Gamma Coactivator (PGC)-1alpha

1
Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11042, Taiwan
2
Department of Obstetrics and Gynecology, Center for Reproductive Medicine and Sciences, Taipei Medical University Hospital, Taipei 11042, Taiwan
3
Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11042, Taiwan
4
Division of Hematology and Oncology, Department of Internal Medicine, Taipei Medicine University Hospital, Taipei 11031, Taiwan
5
Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
6
Taiwan Indigena Botanica Co., Ltd., Taipei 11031, Taiwan
7
Department of Chinese Medicine, Taipei University Hospital, Taipei 11042, Taiwan
8
Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei 11042, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 13 May 2016 / Revised: 27 May 2016 / Accepted: 30 May 2016 / Published: 3 June 2016
(This article belongs to the Section Natural Products)
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Abstract

Chemotherapy, a major approach was used in carcinoma treatment, always involves the development of drug resistance as well as side-effects that affect the quality of patients’ lives. An association between epithelial-mesenchymal transition (EMT) and chemotherapy resistance was established recently. We demonstrate in this paper that the aqueous extract of Paris polyphylla (AEPP)—a traditional Chinese medicine—can be used in various cancer types for suppression of carcinogenesis. We evaluated the suppressions of EMT and mitochondrial activity by AEPP treatment in a high-glucose (HG) induced-human ovarian carcinoma cell line (OVCAR-3 cells). The mitochondrial morphology was investigated using MitoTracker Deep Red FM staining. Our results indicated that AEPP reduced the viability of OVCAR-3 cells considerably through induction of apoptosis. However, this inhibitory potential of AEPP was attenuated by HG induction in OVCAR-3 cells. The levels of estrogen-related receptor (ERR)-alpha activator and peroxisome proliferator-activated receptor-gamma coactivator (PGC)-1alpha were elevated by HG induction, but were suppressed by AEPP treatment. Down-regulations of cell survival and EMT were oberved in OVCAR-3 cells through suppression of PGC-1alpha by AEPP treatment. These results were confirmed through PGC-1alpha knockdown and overexpression in OVCAR-3 cells. Thus, AEPP can be beneficial for treating ovarian cancer and has potential for development of an integrative cancer therapy against ovarian cancer proliferation, metastasis, and migration. View Full-Text
Keywords: Paris polyphylla; ovarian cancer; epithelial-mesenchymal transition (EMT); high glucose induction; peroxisome proliferator-activated receptor-gamma coactivator (PGC)-1alpha Paris polyphylla; ovarian cancer; epithelial-mesenchymal transition (EMT); high glucose induction; peroxisome proliferator-activated receptor-gamma coactivator (PGC)-1alpha
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, C.-W.; Tai, C.-J.; Choong, C.-Y.; Lin, Y.-C.; Lee, B.-H.; Shi, Y.-C.; Tai, C.-J. Aqueous Extract of Paris polyphylla (AEPP) Inhibits Ovarian Cancer via Suppression of Peroxisome Proliferator-Activated Receptor-Gamma Coactivator (PGC)-1alpha. Molecules 2016, 21, 727.

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