1
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Miranda RADR, Oliveira MMDP, Sampaio MIG, Gomes JVD, Silveira D, Guerra ENS, Lofrano‐Porto A, Meireles CG, Simeoni LA. Effects of medicinal plants and natural compounds in models of prostate cancer related to sex steroids: A systematic review. Phytother Res 2022; 36:3032-3079. [DOI: 10.1002/ptr.7498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 03/09/2022] [Accepted: 05/08/2022] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | - João Victor Dutra Gomes
- Laboratory of Natural Products, Faculty of Health Sciences University of Brasília Brasília Brazil
| | - Damaris Silveira
- Laboratory of Natural Products, Faculty of Health Sciences University of Brasília Brasília Brazil
| | - Eliete Neves Silva Guerra
- Laboratory of Oral Histopathology, Faculty of Health Sciences University of Brasília Brasília Brazil
| | - Adriana Lofrano‐Porto
- Molecular Pharmacology Laboratory, Faculty of Health Sciences University of Brasília Brasília Brazil
- Gonadal and Adrenal Diseases Clinics University Hospital of Brasília, University of Brasília Brasília Brazil
| | - Cinthia Gabriel Meireles
- Molecular Pharmacology Laboratory, Faculty of Health Sciences University of Brasília Brasília Brazil
| | - Luiz Alberto Simeoni
- Molecular Pharmacology Laboratory, Faculty of Health Sciences University of Brasília Brasília Brazil
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Miyasaka K, Takeda S, Nakamura S, Matsuda H, Shimoda H. Estrogenic and antiandrogenic activities of methoxyflavans isolated from the fruit of Mauritia Flexuosa (Moriche Palm). J Food Biochem 2020; 45:e13583. [PMID: 33340139 DOI: 10.1111/jfbc.13583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/17/2020] [Accepted: 11/25/2020] [Indexed: 12/01/2022]
Abstract
Moriche palm is consumed as both a fresh fruit and processed food in Peru and Brazil. Although its fruit contains phytoestrogens, the active compounds have not yet been identified. Therefore, we purified moriche palm extract (MPE) and identified compounds exhibiting estrogenic and antiandrogenic activities. Estrogenic activity was assessed by the estrogen-dependent growth of MCF-7 cells and increases in uterine weights in mice. Antiandrogenic activity was evaluated by 5α-reductase inhibitory activity and prostate-specific antigen (PSA) expression in LNCaP cells. In vivo antiestrogenic activity was also assessed based on testosterone-induced prostate growth in castrated mice. Four methoxyflavans were isolated from MPE and all, except for 7,4'-dihydroxy-5-methoxyflavan, promoted MCF-7 cell growth, indicating estrogenic activity. Uterine and ovary weights increased in mice orally administered MPE (400 mg/kg) for 2 weeks. Regarding antiandrogenic activity, among the four methoxyflavans isolated, 6,7,4'-trihydroxy-5-methoxyflavan (1 µg/ml) suppressed the mRNA and protein expression of PSA in LNCaP cells. Furthermore, prostate growth was suppressed in mice orally administered MPE (200 mg/kg) for 2 weeks. All methoxyflavans inhibited 5α-reductase activity with IC50 less than 10 µg/ml. Collectively, the present results demonstrated that orally administered MPE exhibited estrogenic and antiandrogenic activities. Methoxyflavans, particularly 6,7,4'-trihydroxy-5-methoxyflavan, appear to be the active compounds for these activities. PRACTICAL APPLICATIONS: The fruit of Mauritia flexuosa (moriche palm) has been used for beverages and processed foods. Although it is said to contain phytoestrogens, the active compounds have not yet been identified. In this study, we isolated and identified methoxyflavans exhibiting estrogenic and antiandrogenic activities. Among them, 6,7,4'-trihydroxy-5-methoxyflavan appeared to be the most effective compounds for these activities.
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Affiliation(s)
| | - Shogo Takeda
- Oryza Oil & Fat Chemical Co., Ltd, Ichinomiya, Japan
| | - Seikou Nakamura
- Pharmacognosy, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Hisashi Matsuda
- Pharmacognosy, Kyoto Pharmaceutical University, Kyoto, Japan
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3
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Guo F, Wang X, Liu X. Protective effects of irigenin against 1-methyl-4-phenylpyridinium-induced neurotoxicity through regulating the Keap1/Nrf2 pathway. Phytother Res 2020; 35:1585-1596. [PMID: 33118665 DOI: 10.1002/ptr.6926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 09/25/2020] [Accepted: 10/09/2020] [Indexed: 12/23/2022]
Abstract
The rhizome of Belamcanda chinensis possesses antiinflammatory and antioxidant activities. However, the effect of irigenin, isolated from the rhizome of B. chinensis, on 1-methyl-4-phenylpyridinium (MPP+ )-induced neurotoxicity is unknown. MTT assay showed that MPP+ exposure dose dependently inhibited the viability of mouse microglia BV-2 cells, whereas irigenin suppressed MPP+ -induced viability reduction. The production of nitric oxide, prostaglandin E2, tumor necrosis factor-α and interleukin-6 were increased by MPP+ treatment, which were abolished by irigenin treatment. Irigenin-attenuated MPP+ -induced increase of malondialdehyde content and activities of superoxide dismutase, catalase and glutathione peroxidase in BV-2 cells. Irigenin treatment also repressed apoptosis, caspase-3/7 activity and Cytochrome C expression in MPP+ -challenged BV-2 cells. Interestingly, irigenin activated the Keap1/Nrf2 pathway in MPP+ -induced BV-2 cells. Nrf2 knockdown attenuated the effects of irigenin on MPP+ -induced viability reduction, inflammation, oxidative stress and apoptosis in BV-2 cells. In conclusion, irigenin alleviated MPP+ -induced neurotoxicity in BV-2 cells through regulating the Keap1/Nrf2 pathway.
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Affiliation(s)
- Fen Guo
- Department of Geriatrics, The First Affiliated Hospital of Henan University, Kaifeng, China
| | - Xiaoxue Wang
- Department of Geriatrics, The First Affiliated Hospital of Henan University, Kaifeng, China
| | - Xinxin Liu
- Department of Geriatrics, The First Affiliated Hospital of Henan University, Kaifeng, China
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4
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Ha DT, Binh BT, Thu NT, Bich Thu NT, Thanh Tung PH, Oh WK. Four New Compounds Isolated from the Aerial Part of Belamcanda chinensis (L.) and Their Effect on Vascular Smooth Muscle Cell (VSMC) Proliferation. Chem Pharm Bull (Tokyo) 2019; 67:41-46. [PMID: 30606949 DOI: 10.1248/cpb.c18-00645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bio-guided fractionation of the 70% ethanol extract of Belamcanda chinensis (L.) DC. revealed four new compounds, including 6″-O-acetylembinin (5), 3″-O-acetylembinin (6), irigenin 3'-O-β-glucopyranoside (8), and 2'-acetyl-1,3-O-diferuloylsucrose (9), along with five known compounds (1-4, 7). Their chemical structures were determined using extensive NMR data, mass spectroscopy, and comparison with published literature. Among the isolates, compounds 1 and 4-7 achieved good regulation of the growth and proliferation of vascular smooth muscle cells.
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Affiliation(s)
- Do Thi Ha
- Department of Phytochemistry, National Institute of Medical Materials
| | - Bui Thi Binh
- Department of Phytochemistry, National Institute of Medical Materials.,Thai Binh University of Medicine and Pharmacy
| | - Nguyen Thi Thu
- Department of Phytochemistry, National Institute of Medical Materials
| | | | - Pham Ha Thanh Tung
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University
| | - Won Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University
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5
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Nelson AW, Groen AJ, Miller JL, Warren AY, Holmes KA, Tarulli GA, Tilley WD, Katzenellenbogen BS, Hawse JR, Gnanapragasam VJ, Carroll JS. Comprehensive assessment of estrogen receptor beta antibodies in cancer cell line models and tissue reveals critical limitations in reagent specificity. Mol Cell Endocrinol 2017; 440:138-150. [PMID: 27889472 PMCID: PMC5228587 DOI: 10.1016/j.mce.2016.11.016] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/01/2016] [Accepted: 11/20/2016] [Indexed: 11/20/2022]
Abstract
Estrogen Receptor-β (ERβ) has been implicated in many cancers. In prostate and breast cancer its function is controversial, but genetic studies implicate a role in cancer progression. Much of the confusion around ERβ stems from antibodies that are inadequately validated, yet have become standard tools for deciphering its role. Using an ERβ-inducible cell system we assessed commonly utilized ERβ antibodies and show that one of the most commonly used antibodies, NCL-ER-BETA, is non-specific for ERβ. Other antibodies have limited ERβ specificity or are only specific in one experimental modality. ERβ is commonly studied in MCF-7 (breast) and LNCaP (prostate) cancer cell lines, but we found no ERβ expression in either, using validated antibodies and independent mass spectrometry-based approaches. Our findings question conclusions made about ERβ using the NCL-ER-BETA antibody, or LNCaP and MCF-7 cell lines. We describe robust reagents, which detect ERβ across multiple experimental approaches and in clinical samples.
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Affiliation(s)
- Adam W Nelson
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK; Academic Urology Group, Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK; Department of Urology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - Arnoud J Groen
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - Jodi L Miller
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - Anne Y Warren
- Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - Kelly A Holmes
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK
| | - Gerard A Tarulli
- Dame Roma Mitchell Cancer Research Laboratories, Hanson Institute Building, School of Medicine, Faculty of Health Sciences, The University of Adelaide, SA 5005, Australia
| | - Wayne D Tilley
- Dame Roma Mitchell Cancer Research Laboratories, Hanson Institute Building, School of Medicine, Faculty of Health Sciences, The University of Adelaide, SA 5005, Australia
| | - Benita S Katzenellenbogen
- Departments of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - John R Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905 USA
| | - Vincent J Gnanapragasam
- Academic Urology Group, Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK; Department of Urology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, UK
| | - Jason S Carroll
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 ORE, UK.
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6
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Belamcandae chinensis rhizoma – a review of phytochemistry and bioactivity. Fitoterapia 2015; 107:1-14. [DOI: 10.1016/j.fitote.2015.08.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/28/2015] [Accepted: 08/30/2015] [Indexed: 01/12/2023]
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Abstract
Prostate cancer is the commonest, non-cutaneous cancer in men. At present, there is no cure for the advanced, castration-resistant form of the disease. Estrogen has been shown to be important in prostate carcinogenesis, with evidence resulting from epidemiological, cancer cell line, human tissue and animal studies. The prostate expresses both estrogen receptor alpha (ERA) and estrogen receptor beta (ERB). Most evidence suggests that ERA mediates the harmful effects of estrogen in the prostate, whereas ERB is tumour suppressive, but trials of ERB-selective agents have not translated into improved clinical outcomes. The role of ERB in the prostate remains unclear and there is increasing evidence that isoforms of ERB may be oncogenic. Detailed study of ERB and ERB isoforms in the prostate is required to establish their cell-specific roles, in order to determine if therapies can be directed towards ERB-dependent pathways. In this review, we summarise evidence on the role of ERB in prostate cancer and highlight areas for future research.
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Affiliation(s)
- Adam W Nelson
- Cancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UKCancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UK
| | - Wayne D Tilley
- Cancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UKCancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UK
| | - David E Neal
- Cancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UKCancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UKCancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UK
| | - Jason S Carroll
- Cancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UKCancer Research UKCambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UKDepartment of UrologyAddenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UKDame Roma Mitchell Cancer Research LaboratoriesFaculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, AustraliaDepartment of OncologyUniversity of Cambridge, Cambridge CB2 2QQ, UK
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8
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Thelen P, Wuttke W, Seidlová-Wuttke D. Phytoestrogens selective for the estrogen receptor beta exert anti-androgenic effects in castration resistant prostate cancer. J Steroid Biochem Mol Biol 2014; 139:290-3. [PMID: 23872207 DOI: 10.1016/j.jsbmb.2013.06.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 06/27/2013] [Accepted: 06/30/2013] [Indexed: 01/04/2023]
Abstract
Prostate cancer is the leading cause of cancer death in men of the Western world. A castration-resistant prostate cancer (CRPC) eventually will arise when a local restricted prostate carcinoma was not cured duly by radical prostatectomy or radiation therapy. Although androgen ablation therapies are considered the gold standard for treatments of advanced prostate cancer there is no curative therapy available at present. In previous pre-clinical and clinical trials several phytoestrogens were investigated for their anticancer potential in various models for prostate cancer. Phytoestrogens feature tumour preventive characteristics and most probably are involved in the low incidence rate of hormone related cancers in Asian countries. Phytoestrogens such as isoflavones can have a marked impact on the most essential therapy target of CRPC i.e. the androgen receptor. Furthermore, functional analyses solidified the notion of such drugs as androgen antagonistic. Phytoestrogens commonly feature low toxicity combined with a potential of targeted therapy. Thus, these drugs qualify for conceivable implementation in prostate cancer patients under active surveillance. In addition, relapse prevention with these drugs after radical prostatectomy or radiation therapy might be considered. This article is part of a Special Issue entitled 'Phytoestrogens'.
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Affiliation(s)
- Paul Thelen
- University Medical Center Göttingen, Georg-August-University, Department of Urology, 37099 Göttingen, Germany.
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9
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Hasibeder A, Venkataramani V, Thelen P, Radzun HJ, Schweyer S. Phytoestrogens regulate the proliferation and expression of stem cell factors in cell lines of malignant testicular germ cell tumors. Int J Oncol 2013; 43:1385-94. [PMID: 23969837 PMCID: PMC3823397 DOI: 10.3892/ijo.2013.2060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/01/2013] [Indexed: 01/14/2023] Open
Abstract
Phytoestrogens have been shown to exert anti-proliferative effects on different cancer cells. In addition it could be demonstrated that inhibition of proliferation is associated with downregulation of the known stem cell factors NANOG, POU5F1 and SOX2 in tumor cells. We demonstrate the potential of Belamcanda chinensis extract (BCE) and tectorigenin as anticancer drugs in cell lines of malignant testicular germ cell tumor cells (TGCT) by inhibition of proliferation and regulating the expression of stem cell factors. The TGCT cell lines TCam-2 and NTera-2 were treated with BCE or tectorigenin and MTT assay was used to measure the proliferation of tumor cells. In addition, the expression of stem cell factors was analyzed by quantitative PCR and western blot analysis. Furthermore, global expression analysis was performed by microarray technique. BCE and tectorigenin inhibited proliferation and downregulated the stem cell factors NANOG and POU5F1 in TGCT cells. In addition, gene expression profiling revealed induction of genes important for the differentiation and inhibition of oncogenes. Utilizing connectivity map in an attempt to elucidate mechanism underlying BCE treatments we found highly positive association to histone deacetylase inhibitors (HDACi) amongst others. Causing no histone deacetylase inhibition, the effects of BCE on proliferation and stem cell factors may be based on histone-independent mechanisms such as direct hyperacetylation of transcription factors. Based on these findings, phytoestrogens may be useful as new agents in the treatment of TGCT.
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Affiliation(s)
- Astrid Hasibeder
- Department of Pathology, Georg August University, D-37075 Göttingen, Germany
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10
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Kapoor S. Tectorigenin and its inhibitory effects on tumor growth in systemic malignancies. Immunopharmacol Immunotoxicol 2013; 35:533. [DOI: 10.3109/08923973.2013.799685] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Yang YI, Lee KT, Park HJ, Kim TJ, Choi YS, Shih IM, Choi JH. Tectorigenin sensitizes paclitaxel-resistant human ovarian cancer cells through downregulation of the Akt and NFκB pathway. Carcinogenesis 2012; 33:2488-98. [PMID: 23027625 DOI: 10.1093/carcin/bgs302] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Paclitaxel (Taxol) is currently used as the front-line chemotherapeutic agent for several cancers including ovarian carcinoma; however, the drug frequently induces drug resistance through multiple mechanisms. The new strategy of using natural compounds in combination therapies is highly attractive because those compounds may enhance the efficacy of chemotherapy. In this study, we found that tectorigenin, an isoflavonoid isolated from flower of Pueraria thunbergiana, enhanced the growth-inhibitory effect of paclitaxel in paclitaxel-resistant ovarian cancer cells (MPSC1(TR), A2780(TR) and SKOV3(TR)) as well as their naive counterparts. The combination of tectorigenin with paclitaxel resulted in a synergistic apoptosis compared with either agent alone through activation of caspases-3, -8 and -9. Treatment with tectorigenin inhibited the nuclear translocation of NFκB and the expression of NFκB-dependent genes such as FLIP, XIAP, Bcl-2, Bcl-xL and COX-2, which are known to be associated with chemoresistance. In addition, the tectorigenin-paclitaxel combination inhibited the phosphorylation of IκB and IKK and the activation of Akt in paclitaxel-resistant cancer cells. Moreover, tectorigenin-paclitaxel-induced cell growth inhibition was enhanced by pretreatment with the Akt inhibitor LY294002 or overexpression of the dominant negative Akt (Akt-DN), but reduced by overexpression of constitutively activated Akt (Akt-Myr). Furthermore, we found that Akt-Myr, at least in part, reversed tectorigenin-paclitaxel-induced nuclear translocation of NFκB and the phosphorylation of IκB and IKK. These data suggest that tectorigenin could sensitize paclitaxel-resistant human ovarian cancer cells through inactivation of the Akt/IKK/IκB/NFκB signaling pathway, and promise a new intervention to chemosensitize paclitaxel-induced cytotoxicity in ovarian cancer.
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Affiliation(s)
- Yeong-In Yang
- Department of Life and Nanopharmaceutical Science, Kyung Hee University, Seoul 130-701, Republic of Korea
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Tsui KH, Chung LC, Feng TH, Chang PL, Juang HH. Upregulation of prostate-derived Ets factor by luteolin causes inhibition of cell proliferation and cell invasion in prostate carcinoma cells. Int J Cancer 2011; 130:2812-23. [DOI: 10.1002/ijc.26284] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 06/21/2011] [Indexed: 12/24/2022]
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13
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Wu C, Li Y, Chen Y, Lao X, Sheng L, Dai R, Meng W, Deng Y. Hypoglycemic effect of Belamcanda chinensis leaf extract in normal and STZ-induced diabetic rats and its potential active faction. PHYTOMEDICINE 2011; 18:292-297. [PMID: 20739161 DOI: 10.1016/j.phymed.2010.07.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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14
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Juang HH, Lin YF, Chang PL, Tsui KH. Cardiac Glycosides Decrease Prostate Specific Antigen Expression by Down-Regulation of Prostate Derived Ets Factor. J Urol 2010; 184:2158-64. [PMID: 20850842 DOI: 10.1016/j.juro.2010.06.093] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Indexed: 01/22/2023]
Affiliation(s)
- Horng-Heng Juang
- Department of Anatomy, Chang Gung University, Kwei-Shan, Taiwan, Republic of China
- Bioinformation Center, Chang Gung Memorial Hospital, Kwei-Shan, Taiwan, Republic of China
| | - Yu-Fen Lin
- Department of Anatomy, Chang Gung University, Kwei-Shan, Taiwan, Republic of China
| | - Phei-Lang Chang
- Department of Urology, Chang Gung Memorial Hospital, Kwei-Shan, Taiwan, Republic of China
- Bioinformation Center, Chang Gung Memorial Hospital, Kwei-Shan, Taiwan, Republic of China
| | - Ke-Hung Tsui
- Department of Urology, Chang Gung Memorial Hospital, Kwei-Shan, Taiwan, Republic of China
- Bioinformation Center, Chang Gung Memorial Hospital, Kwei-Shan, Taiwan, Republic of China
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15
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Wuttke W, Jarry H, Seidlova-Wuttke D. Plant-derived alternative treatments for the aging male: facts and myths. Aging Male 2010; 13:75-81. [PMID: 19951012 DOI: 10.3109/13685530903440416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Soy- or red clover- derived products containing isoflavones have been amply studied in climacteric and postmenopausal women, and confusing contradicting results have been published. The beneficial effects on climacteric complaints, cholesterol and the development of osteoporosis are marginally at best and there are no uterine and mammary safety studies. In males, however, isoflavones may protect the prostate to make them less prone to develop cancer. Cell biological and animal experimental data support this notion. Clinical data about possible beneficial effects on cholesterol or in the bone are largely missing. Hence, soy or red clover products containing the mild estrogenic isoflavones with a slightly higher affinity to the estrogen receptor of the beta in comparison to the alpha subtype may prove to have some beneficial effects in males.
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Jiang Y, Zhao W, Feng C, Zhou T, Fan G, Wu Y. Isolation and purification of isoflavonoids from Rhizoma Belamcandae by two-dimensional preparative high-performance liquid chromatography with column switch technology. Biomed Chromatogr 2009; 23:1064-72. [DOI: 10.1002/bmc.1224] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Kang K, Lee SB, Jung SH, Cha KH, Park WD, Sohn YC, Nho CW. Tectoridin, a poor ligand of estrogen receptor alpha, exerts its estrogenic effects via an ERK-dependent pathway. Mol Cells 2009; 27:351-7. [PMID: 19326083 DOI: 10.1007/s10059-009-0045-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 12/22/2008] [Accepted: 12/24/2008] [Indexed: 11/26/2022] Open
Abstract
Phytoestrogens are the natural compounds isolated from plants, which are structurally similar to animal estrogen, 17beta-estradiol. Tectoridin, a major isoflavone isolated from the rhizome of Belamcanda chinensis. Tectoridin is known as a phytoestrogen, however, the molecular mechanisms underlying its estrogenic effect are remained unclear. In this study we investigated the estrogenic signaling triggered by tectoridin as compared to a famous phytoestrogen, genistein in MCF-7 human breast cancer cells. Tectoridin scarcely binds to ER alpha as compared to 17beta-estradiol and genistein. Despite poor binding to ER alpha, tectoridin induced potent estrogenic effects, namely recovery of the population of cells in the S-phase after serum starvation, transactivation of the estrogen response element, and induction of MCF-7 cell proliferation. The tectoridin-induced estrogenic effect was severely abrogated by treatment with U0126, a specific MEK1/2 inhibitor. Tectoridin promoted phosphorylation of ERK1/2, but did not affect phosphorylation of ER alpha at Ser(118). It also increased cellular accumulation of cAMP, a hallmark of GPR30-mediated estrogen signaling. These data imply that tectoridin exerts its estrogenic effect mainly via the GPR30 and ERK-mediated rapid nongenomic estrogen signaling pathway. This property of tectoridin sets it aside from genistein where it exerts the estrogenic effects via both an ER-dependent genomic pathway and a GPR30-dependent nongenomic pathway.
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Affiliation(s)
- Kyungsu Kang
- Natural Products Research Center, Korea Institute of Science and Technology Gangneung Institute, Gangneung 210-340, Korea
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