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Trivedi A, Hasan A, Ahmad R, Siddiqui S, Srivastava A, Misra A, Mir SS. Flavonoid Myricetin as Potent Anticancer Agent: A Possibility towards Development of Potential Anticancer Nutraceuticals. Chin J Integr Med 2024; 30:75-84. [PMID: 37340205 DOI: 10.1007/s11655-023-3701-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2023] [Indexed: 06/22/2023]
Abstract
Good nutrition plays a crucial role in maintaining a balanced lifestyle. The beneficial effects of nutrition have been found to counteract nutritional disturbances with the expanded use of nutraceuticals to treat and manage cardiovascular diseases, cancer, and other developmental defects over the last decade. Flavonoids are found abundantly in plant-derived foods such as fruits, vegetables, tea, cocoa, and wine. Fruits and vegetables contain phytochemicals like flavonoids, phenolics, alkaloids, saponins, and terpenoids. Flavonoids can act as anti-inflammatory, anti-allergic, anti-microbial (antibacterial, antifungal, and antiviral) antioxidant, anti-cancer, and anti-diarrheal agents. Flavonoids are also reported to upregulate apoptotic activity in several cancers such as hepatic, pancreatic, breast, esophageal, and colon. Myricetin is a flavonol which is naturally present in fruits and vegetables and has shown possible nutraceutical value. Myricetin has been portrayed as a potent nutraceutical that may protect against cancer. The focus of the present review is to present an updated account of studies demonstrating the anticancer potential of myricetin and the molecular mechanisms involved therein. A better understanding of the molecular mechanism(s) underlying its anticancer activity would eventually help in its development as a novel anticancer nutraceutical having minimal side effects.
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Affiliation(s)
- Anchal Trivedi
- Department of Biochemistry, Era's Lucknow Medical College & Hospital, Era University, Lucknow, 226003, India
| | - Adria Hasan
- Molecular Cell Biology Laboratory, Integral Information and Research Centre-4 (IIRC-4), Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, 226026, India
| | - Rumana Ahmad
- Department of Biochemistry, Era's Lucknow Medical College & Hospital, Era University, Lucknow, 226003, India
| | - Sahabjada Siddiqui
- Department of Biotechnology, Era's Lucknow Medical College & Hospital, Era University, Lucknow, 226003, India
| | - Aditi Srivastava
- Department of Biochemistry, Era's Lucknow Medical College & Hospital, Era University, Lucknow, 226003, India
| | - Aparna Misra
- Department of Biochemistry, Era's Lucknow Medical College & Hospital, Era University, Lucknow, 226003, India
| | - Snober S Mir
- Molecular Cell Biology Laboratory, Integral Information and Research Centre-4 (IIRC-4), Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow, 226026, India.
- Department of Biosciences, Faculty of Science, Integral University, Lucknow, 226026, India.
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Bu N, Jamil A, Hussain L, Alshammari A, Albekairi TH, Alharbi M, Jamshed A, Bazmi RR, Younas A. Phytochemical-Based Study of Ethanolic Extract of Saraca asoca in Letrozole-Induced Polycystic Ovarian Syndrome in Female Adult Rats. ACS OMEGA 2023; 8:42586-42597. [PMID: 38024692 PMCID: PMC10652831 DOI: 10.1021/acsomega.3c05274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/29/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023]
Abstract
Polycystic ovarian syndrome (PCOS) is a complex metabolic and endocrine disorder which affects women of reproductive age. It is a condition in which ovaries produce an excessive amount of androgen (the male sex hormone). Saraca asoca (Roxb.) Willd. is a plant of the Fabaceae family. This plant has been traditionally used as a uterine tonic in leucorrhea and dysmenorrhea due to its various pharmacological activities. In this study, the ethanolic extract of S. asoca (EESA) was evaluated for its potential to be used for the management of PCOS. HPLC analysis revealed the presence of various phytoconstituents: kaempferol, rutin, (-)-epicatechin, salicylic acid, and gallic acid. For PCOS induction, 30 adult female rats were randomly divided into two groups: the control group (n = 5) and the PCOS group (n = 25). Letrozole (1 mg/kg/day) was administered per orally (p.o.) for a period of 7 weeks for the induction of disease. Weekly body weight measurements and daily vaginal cytology examinations were performed for disease confirmation. After disease induction, the PCOS group was further divided into five groups (n = 5), that is, disease control, metformin, and EESA (200, 400, and 600 mg/kg) groups, respectively, and given treatment doses for next 5 weeks. After the treatment period, all animals were weighed and euthanized humanly. Blood samples were collected for hormonal assays, lipid profiles, and liver function tests. For histological assessment of ovarian cysts, ovaries were dissected. Livers were preserved to evaluate EESA's antioxidant properties. Histopathology analysis revealed that EESA reduced body weight and the number of cystic follicles. Furthermore, it also lowered the elevated levels of serum testosterone, luteinizing hormone, insulin, and malonaldehyde in PCOS rats while increasing the levels of follicle-stimulating hormone, estradiol, progesterone, prolactin, and other antioxidant enzymes such as superoxide dismutase, glutathione, and catalase. It can be concluded that EESA exhibited beneficial effects in normalizing the perturbed hormonal profile and improved the ovary status by decreasing the cystic follicle and improving the ovulation status in a dose-dependent manner.
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Affiliation(s)
- Na Bu
- Department
of Pharmacy, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou 31006, P. R. China
| | - Alina Jamil
- Department
of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad 38040, Pakistan
| | - Liaqat Hussain
- Department
of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad 38040, Pakistan
| | - Abdulrahman Alshammari
- Department
of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Thamer H. Albekairi
- Department
of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Metab Alharbi
- Department
of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ayesha Jamshed
- Department
of Pharmacology, Faculty of Pharmacy, Islamia
University Bahawalpur, Bahawalpur 63100, Pakistan
| | - Rizwan Rashid Bazmi
- Department
of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad 38040, Pakistan
| | - Anam Younas
- Department
of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad 38040, Pakistan
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Mahmud AR, Ema TI, Siddiquee MFR, Shahriar A, Ahmed H, Mosfeq-Ul-Hasan M, Rahman N, Islam R, Uddin MR, Mizan MFR. Natural flavonols: actions, mechanisms, and potential therapeutic utility for various diseases. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2023; 12:47. [PMID: 37216013 PMCID: PMC10183303 DOI: 10.1186/s43088-023-00387-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/07/2023] [Indexed: 05/24/2023] Open
Abstract
Background Flavonols are phytoconstituents of biological and medicinal importance. In addition to functioning as antioxidants, flavonols may play a role in antagonizing diabetes, cancer, cardiovascular disease, and viral and bacterial diseases. Quercetin, myricetin, kaempferol, and fisetin are the major dietary flavonols. Quercetin is a potent scavenger of free radicals, providing protection from free radical damage and oxidation-associated diseases. Main body of the abstract An extensive literature review of specific databases (e.g., Pubmed, google scholar, science direct) were conducted using the keywords "flavonol," "quercetin," "antidiabetic," "antiviral," "anticancer," and "myricetin." Some studies concluded that quercetin is a promising antioxidant agent while kaempferol could be effective against human gastric cancer. In addition, kaempferol prevents apoptosis of pancreatic beta-cells via boosting the function and survival rate of the beta-cells, leading to increased insulin secretion. Flavonols also show potential as alternatives to conventional antibiotics, restricting viral infection by antagonizing the envelope proteins to block viral entry. Short conclusion There is substantial scientific evidence that high consumption of flavonols is associated with reduced risk of cancer and coronary diseases, free radical damage alleviation, tumor growth prevention, and insulin secretion improvement, among other diverse health benefits. Nevertheless, more studies are required to determine the appropriate dietary concentration, dose, and type of flavonol for a particular condition to prevent any adverse side effects.
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Affiliation(s)
- Aar Rafi Mahmud
- Department of Biochemistry and Molecular Biology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902 Bangladesh
| | - Tanzila Ismail Ema
- Department of Biochemistry and Microbiology, North South University, Dhaka, 1229 Bangladesh
| | | | - Asif Shahriar
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217 Bangladesh
| | - Hossain Ahmed
- Department of Biotechnology and Genetic Engineering, University of Development Alternative (UODA), Dhaka, 1208 Bangladesh
| | - Md. Mosfeq-Ul-Hasan
- Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200 Bangladesh
| | - Nova Rahman
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka, 1342 Bangladesh
| | - Rahatul Islam
- Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
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Tousi MS, Sepehri H, Khoee S, Farimani MM, Delphi L, Mansourizadeh F. Evaluation of apoptotic effects of mPEG-b-PLGA coated iron oxide nanoparticles as a eupatorin carrier on DU-145 and LNCaP human prostate cancer cell lines. J Pharm Anal 2020; 11:108-121. [PMID: 33717617 PMCID: PMC7930876 DOI: 10.1016/j.jpha.2020.04.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 04/02/2020] [Accepted: 04/10/2020] [Indexed: 12/24/2022] Open
Abstract
Many studies have so far confirmed the efficiency of phytochemicals in the treatment of prostate cancer. Eupatorin, a flavonoid with a wide range of phytomedical activities, suppresses proliferation of and induces apoptosis of multiple cancer cell lines. However, low solubility, poor bioavailability, and rapid degradation limit its efficacy. The aim of our study was to evaluate whether the use of mPEG-b-poly (lactic-co-glycolic) acid (PLGA) coated iron oxide nanoparticles as a carrier could enhance the therapeutic efficacy of eupatorin in DU-145 and LNcaP human prostate cancer cell lines. Nanoparticles were prepared by the co-precipitation method and were fully characterized for morphology, surface charge, particle size, drug loading, encapsulation efficiency and in vitro drug-release profile. The inhibitory effect of nanoparticles on cell viability was evaluated by MTT test. Apoptosis was then determined by Hoechest staining, cell cycle analysis, NO production, annexin/propidium iodide (PI) assay, and Western blotting. The results indicated that eupatorin was successfully entrapped in Fe3O4@mPEG-b-PLGA nanoparticles with an efficacy of (90.99 ± 2.1)%. The nanoparticle’s size was around (58.5 ± 4) nm with a negative surface charge [(−34.16 ± 1.3) mV]. In vitro release investigation showed a 30% initial burst release of eupatorin in 24 h, followed by sustained release over 200 h. The MTT assay indicated that eupatorin-loaded Fe3O4@mPEG-b-PLGA nanoparticles exhibited a significant decrease in the growth rate of DU-145 and LNcaP cells and their IC50 concentrations were 100 μM and 75 μM, respectively. Next, apoptosis was confirmed by nuclear condensation, enhancement of cell population in the sub-G1 phase and increased NO level. Annexin/PI analysis demonstrated that eupatorin-loaded Fe3O4@mPEG-b-PLGA nanoparticles could increase apoptosis and decrease necrosis frequency. Finally, Western blotting analysis confirmed these results and showed that Bax/Bcl-2 ratio and the cleaved caspase-3 level were up-regulated by the designing nanoparticles. Encapsulation of eupatorin in Fe3O4@mPEG-b-PLGA nanoparticles increased its anticancer effects in prostate cancer cell lines as compared to free eupatorin. Based on these results, this formulation can provide a sustained eupatorin-delivery system for cancer treatment with the drug remaining active at a significantly lower dose, making it a suitable candidate for pharmacological uses. In the current study, Eupatorin was efficiently encapsulated in mPEG-b-PLGA coated iron oxide nanoparticles. The nanoparticles bypass the limitations and provide a sustained release of Eupatorin into the human prostate cancer cell. The designed nanoparticles can be more effective in inhibiting cancer cell growth as compared to free form.
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Affiliation(s)
- Marziyeh Shalchi Tousi
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Houri Sepehri
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Sepideh Khoee
- Polymer Chemistry Department, School of Science, University of Tehran, Tehran, Iran
| | - Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Ladan Delphi
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Fariba Mansourizadeh
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
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Kang HR, Moon JY, Ediriweera MK, Song YW, Cho M, Kasiviswanathan D, Cho SK. Dietary flavonoid myricetin inhibits invasion and migration of radioresistant lung cancer cells (A549-IR) by suppressing MMP-2 and MMP-9 expressions through inhibition of the FAK-ERK signaling pathway. Food Sci Nutr 2020; 8:2059-2067. [PMID: 32328272 PMCID: PMC7174229 DOI: 10.1002/fsn3.1495] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 01/14/2020] [Accepted: 01/17/2020] [Indexed: 12/19/2022] Open
Abstract
Myricetin is a commonly found dietary flavonoid. In the present study, we investigated the effects of myricetin on migration and invasion of radioresistant lung cancer cells (A549-IR). Transcriptome analysis of A549-IR cells identified several differentially expressed genes (DEGs) in A549-IR cells compared to parental A549 cells. Functional enrichment analysis revealed that most of the DEGs were linked with PI3K-AKT signaling, proteoglycans, focal adhesion, and ECM-receptor interactions. A549-IR cells demonstrated enhanced migratory potential with increased expression of vimentin, snail and slug, and reduced expression of E-cadherin. A549-IR cells exposed to myricetin displayed reduced migration and suppressed MMP-2 and MMP-9 expression. Notably, myricetin inhibited the phosphorylation of focal adhesion kinase (FAK) and altered the F-actin/G-actin ratio in A549-IR cells, without modulation of EMT markers. These findings suggest that myricetin can inhibit migration of A549-IR cells by suppressing MMP-2 and MMP-9 expressions through inhibition of the FAK-ERK signaling pathway.
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Affiliation(s)
- Hye R. Kang
- Interdisciplinary Graduate Program in Advanced Convergence Technology and ScienceJeju National UniversityJejuKorea
| | - Jeong Y. Moon
- Subtropical/Tropical Organism Gene BankJeju National UniversityJejuKorea
| | | | - Yeon W. Song
- Faculty of BiotechnologyCollege of Applied Life SciencesSARIJeju National UniversityJejuKorea
| | - Moonjae Cho
- Interdisciplinary Graduate Program in Advanced Convergence Technology and ScienceJeju National UniversityJejuKorea
- Department of BiochemistrySchool of MedicineJeju National UniversityJejuKorea
| | | | - Somi K. Cho
- Interdisciplinary Graduate Program in Advanced Convergence Technology and ScienceJeju National UniversityJejuKorea
- Subtropical/Tropical Organism Gene BankJeju National UniversityJejuKorea
- Faculty of BiotechnologyCollege of Applied Life SciencesSARIJeju National UniversityJejuKorea
- School of Biomaterial Science and TechnologyCollege of Applied Life SciencesJeju National UniversityJejuKorea
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Campos MS, Silva JPA, Lima DS, Regasini LO, Marques MR, Biancardi MF, Taboga SR, Santos FCA. Short-term exposure to chrysin promotes proliferative responses in the ventral male prostate and female prostate of adult gerbils. Int J Exp Pathol 2019; 100:192-201. [PMID: 31131507 DOI: 10.1111/iep.12317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/28/2019] [Accepted: 04/02/2019] [Indexed: 12/21/2022] Open
Abstract
Chrysin (5,7-dihydroxyflavone) is a bioactive compound found in different fruits, vegetables, honey and propolis. This flavone has been suggested for the treatment of reproductive dysfunction, mainly because of its antioxidant and hormonal properties. However, the effects of this polyphenol on the prostate are still poorly understood. The purpose of this study was to evaluate the effects of short-term chrysin exposure on the ventral male and female prostates of adult gerbils. To evaluate the androgenic potential of chrysin, gerbils were also exposed to testosterone. Male and female gerbils were exposed to chrysin (50 mg/kg/day, orally) or testosterone cypionate (1 mg/kg/week, subcutaneously) for 3, 7 and 21 days. Prostates were dissected for morphological, stereological and immunohistochemical analyses. Serum levels of testosterone and 17β-estradiol were measured by ELISA. Serum testosterone levels were not increased by chrysin supplementation in males or females. However, only females treated with chrysin for 21 days showed an increase in estradiol levels. Increased androgen receptor immunoreactivity, higher proliferation rates and glandular hyperplasia were observed in male and female prostates for all chrysin treatment times. Additionally, increased oestrogen receptor alpha immunoreactivity was observed in all chrysin-treated females. Although chrysin and testosterone promoted similar morphological changes in the gerbil prostate, chrysin supplementation was less deleterious to prostate health, since it resulted in lower incidence of hyperplasia and an absence of neoplastic foci.
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Affiliation(s)
- Mônica S Campos
- Laboratory of Microscopy and Microanalysis, Department of Biology, State University of São Paulo - UNESP, São José do Rio Preto, São Paulo, Brazil
| | - João P A Silva
- Laboratory of Microscopy Applied to Reproduction, Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Danilo S Lima
- Laboratory of Microscopy Applied to Reproduction, Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Luis O Regasini
- Laboratory of Green and Medicinal Chemistry, Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Mara Rúbia Marques
- Laboratory of Microscopy Applied to Reproduction, Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Manoel F Biancardi
- Laboratory of Microscopy Applied to Reproduction, Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Sebastião R Taboga
- Laboratory of Microscopy and Microanalysis, Department of Biology, State University of São Paulo - UNESP, São José do Rio Preto, São Paulo, Brazil
| | - Fernanda C A Santos
- Laboratory of Microscopy Applied to Reproduction, Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
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Molecular Mechanisms and Bioavailability of Polyphenols in Prostate Cancer. Int J Mol Sci 2019; 20:ijms20051062. [PMID: 30823649 PMCID: PMC6429226 DOI: 10.3390/ijms20051062] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 02/20/2019] [Accepted: 02/25/2019] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer is the one of the most frequently diagnosed cancers among men over the age of 50. Several lines of evidence support the observation that polyphenols have preventive and therapeutic effects in prostate cancer. Moreover, prostate cancer is ideal for chemoprevention due to its long latency. We propose here an equilibrated lifestyle with a diet rich in polyphenols as prophylactic attempts to slow down the progression of localized prostate cancer or prevent the occurrence of the disease. In this review, we will first summarize the molecular mechanisms of polyphenols in prostate cancer with a focus on the antioxidant and pro-oxidant effects, androgen receptors (AR), key molecules involved in AR signaling and their transactivation pathways, cell cycle, apoptosis, angiogenesis, metastasis, genetic aspects, and epigenetic mechanisms. The relevance of the molecular mechanisms is discussed in light of current bioavailability data regarding the activity of polyphenols in prostate cancer. We also highlight strategies for improving the bioavailability of polyphenols. We hope that this review will lead to further research regarding the bioavailability and the role of polyphenols in prostate cancer prevention and treatment.
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Sivoňová MK, Kaplán P, Tatarková Z, Lichardusová L, Dušenka R, Jurečeková J. Androgen receptor and soy isoflavones in prostate cancer. Mol Clin Oncol 2018; 10:191-204. [PMID: 30680195 DOI: 10.3892/mco.2018.1792] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 11/16/2018] [Indexed: 12/13/2022] Open
Abstract
Androgens and androgen receptor (AR) play a critical role not only in normal prostate development, but also in prostate cancer. For that reason, androgen deprivation therapy (ADT) is the primary treatment for prostate cancer. However, the majority of patients develop castration-resistant prostate cancer, which eventually leads to mortality. Novel therapeutic approaches, including dietary changes, have been explored. Soy isoflavones have become a focus of interest because of their positive health benefits on numerous diseases, particularly hormone-related cancers, including prostate and breast cancers. An important strategy for the prevention and/or treatment of prostate cancer might thus be the action of soy isoflavones on the AR signaling pathway. The current review article provides a detailed overview of the anticancer potential of soy isoflavones (genistein, daidzein and glycitein), as mediated by their effect on AR.
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Affiliation(s)
- Monika Kmetová Sivoňová
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Peter Kaplán
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.,Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Zuzana Tatarková
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Lucia Lichardusová
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Róbert Dušenka
- Department of Urology, Jessenius Faculty of Medicine and UHM in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Jana Jurečeková
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
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Quercetin inhibits prostate cancer by attenuating cell survival and inhibiting anti-apoptotic pathways. World J Surg Oncol 2018; 16:108. [PMID: 29898731 PMCID: PMC6001031 DOI: 10.1186/s12957-018-1400-z] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/21/2018] [Indexed: 02/07/2023] Open
Abstract
Background Despite recent advances in diagnosis and treatment, prostate cancer (PCa) remains the leading cause of cancer-related deaths in men. Current treatments offered in the clinics are often toxic and have severe side effects. Hence, to treat and manage PCa, new agents with fewer side effects or having potential to reduce side effects of conventional therapy are needed. In this study, we show anti-cancer effects of quercetin, an abundant bioflavonoid commonly used to treat prostatitis, and defined quercetin-induced cellular and molecular changes leading to PCa cell death. Methods Cell viability was assessed using MTT. Cell death mode, mitochondrial outer membrane potential, and oxidative stress levels were determined by flow cytometry using Annexin V-7 AAD dual staining kit, JC-1 dye, and ROS detection kit, respectively. Antibody microarray and western blot were used to delineate the molecular changes induced by quercetin. Results PCa cells treated with various concentrations of quercetin showed time- and dose-dependent decrease in cell viability compared to controls, without affecting normal prostate epithelial cells. Quercetin led to apoptotic and necrotic cell death in PCa cells by affecting the mitochondrial integrity and disturbing the ROS homeostasis depending upon the genetic makeup and oxidative status of the cells. LNCaP and PC-3 cells that have an oxidative cellular environment showed ROS quenching after quercetin treatment while DU-145 showed rise in ROS levels despite having a highly reductive environment. Opposing effects of quercetin were also observed on the pro-survival pathways of PCa cells. PCa cells with mutated p53 (DU-145) and increased ROS showed significant reduction in the activation of pro-survival Akt pathway while Raf/MEK were activated in response to quercetin. PC-3 cells lacking p53 and PTEN with reduced ROS levels showed significant activation of Akt and NF-κB pathway. Although some of these changes are commonly associated with oncogenic response, the cumulative effect of these alterations is PCa cell death. Conclusions Our results demonstrated quercetin exerts its anti-cancer effects by modulating ROS, Akt, and NF-κB pathways. Quercetin could be used as a chemopreventive option as well as in combination with chemotherapeutic drugs to improve clinical outcomes of PCa patients.
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Avtanski D, Poretsky L. Phyto-polyphenols as potential inhibitors of breast cancer metastasis. Mol Med 2018; 24:29. [PMID: 30134816 PMCID: PMC6016885 DOI: 10.1186/s10020-018-0032-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 05/27/2018] [Indexed: 12/31/2022] Open
Abstract
Breast cancer is the most common cancer among women as metastasis is currently the main cause of mortality. Breast cancer cells undergoing metastasis acquire resistance to death signals and increase of cellular motility and invasiveness.Plants are rich in polyphenolic compounds, many of them with known medicinal effects. Various phyto-polyphenols have also been demonstrated to suppress cancer growth. Their mechanism of action is usually pleiotropic as they target multiple signaling pathways regulating key cellular processes such as proliferation, apoptosis and differentiation. Importantly, some phyto- polyphenols show low level of toxicity to untransformed cells, but selective suppressing effects on cancer cells proliferation and differentiation.In this review, we summarize the current information about the mechanism of action of some phyto-polyphenols that have demonstrated anti-carcinogenic activities in vitro and in vivo. Gained knowledge of how these natural polyphenolic compounds work can give us a clue for the development of novel anti-metastatic agents.
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Affiliation(s)
- Dimiter Avtanski
- Gerald J. Friedman Diabetes Institute at Lenox Hill Hospital, Northwell Health, New York, NY, 10022, USA.
- Division of Endocrinology and Metabolism, Department of Medicine, Friedman Diabetes Institute at Lenox Hill Hospital, Northwell Health, 110 E 59th Street, Suite 8B, Room 837, New York, NY, 10022, USA.
| | - Leonid Poretsky
- Gerald J. Friedman Diabetes Institute at Lenox Hill Hospital, Northwell Health, New York, NY, 10022, USA
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Preparation and Antioxidant Activity of Ethyl-Linked Anthocyanin-Flavanol Pigments from Model Wine Solutions. Molecules 2018; 23:molecules23051066. [PMID: 29751487 PMCID: PMC6100035 DOI: 10.3390/molecules23051066] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/18/2018] [Accepted: 04/24/2018] [Indexed: 01/12/2023] Open
Abstract
Anthocyanin-flavanol pigments, formed during red wine fermentation and storage by condensation reactions between anthocyanins and flavanols (monomers, oligomers, and polymers), are one of the major groups of polyphenols in aged red wine. However, knowledge of their biological activities is lacking. This is probably due to the structural diversity and complexity of these molecules, which makes the large-scale separation and isolation of the individual compounds very difficult, thus restricting their further study. In this study, anthocyanins (i.e., malvidin-3-glucoside, cyanidin-3-glucoside, and peonidin-3-glucoside) and (–)-epicatechin were first isolated at a preparative scale by high-speed counter-current chromatography. The condensation reaction between each of the isolated anthocyanins and (–)-epicatechin, mediated by acetaldehyde, was conducted in model wine solutions to obtain ethyl-linked anthocyanin-flavanol pigments. The effects of pH, molar ratio, and temperature on the reaction rate were investigated, and the reaction conditions of pH 1.7, molar ratio 1:6:10 (anthocyanin/(–)-epicatechin/acetaldehyde), and reaction temperature of 35 °C were identified as optimal for conversion of anthocyanins to ethyl-linked anthocyanin-flavanol pigments. Six ethyl-linked anthocyanin-flavanol pigments were isolated in larger quantities and collected under optimal reaction conditions, and their chemical structures were identified by HPLC-QTOF-MS and ECD analyses. Furthermore, DPPH, ABTS, and FRAP assays indicate that ethyl-linked anthocyanin-flavanol pigments show stronger antioxidant activities than their precursor anthocyanins.
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Tummala R, Lou W, Gao AC, Nadiminty N. Quercetin Targets hnRNPA1 to Overcome Enzalutamide Resistance in Prostate Cancer Cells. Mol Cancer Ther 2017; 16:2770-2779. [PMID: 28729398 DOI: 10.1158/1535-7163.mct-17-0030] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 05/01/2017] [Accepted: 07/07/2017] [Indexed: 11/16/2022]
Abstract
Prostate cancer remains dependent on androgen receptor signaling even after castration. Aberrant androgen receptor signaling in castration-resistant prostate cancer is mediated by mechanisms such as alterations in the androgen receptor and activation of interacting signaling pathways. Clinical evidence confirms that resistance to the next-generation antiandrogen, enzalutamide, may be mediated to a large extent by alternative splicing of the androgen receptor to generate constitutively active splice variants such as AR-V7. The splice variants AR-V7 and ARv567es have been implicated in the resistance to not only enzalutamide, but also to abiraterone and other conventional therapeutics such as taxanes. Numerous studies, including ours, suggest that splicing factors such as hnRNPA1 promote the generation of AR-V7, thus contributing to enzalutamide resistance in prostate cancer cells. In the present study, we discovered that quercetin, a naturally occurring polyphenolic compound, reduces the expression of hnRNPA1, and consequently, that of AR-V7. The suppression of AR-V7 by quercetin resensitizes enzalutamide-resistant prostate cancer cells to treatment with enzalutamide. Our results indicate that quercetin downregulates hnRNPA1 expression, downregulates the expression of AR-V7, antagonizes androgen receptor signaling, and resensitizes enzalutamide-resistant prostate cancer cells to enzalutamide treatment in vivo in mouse xenografts. These findings demonstrate that suppressing the alternative splicing of the androgen receptor may have important implications in overcoming the resistance to next-generation antiandrogen therapy. Mol Cancer Ther; 16(12); 2770-9. ©2017 AACR.
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Affiliation(s)
- Ramakumar Tummala
- Department of Urology, Comprehensive Cancer Center, University of California Davis, Sacramento, California
| | - Wei Lou
- Department of Urology, Comprehensive Cancer Center, University of California Davis, Sacramento, California
| | - Allen C Gao
- Department of Urology, Comprehensive Cancer Center, University of California Davis, Sacramento, California
| | - Nagalakshmi Nadiminty
- Department of Urology, Comprehensive Cancer Center, University of California Davis, Sacramento, California.
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Singh AN, Baruah MM, Sharma N. Structure Based docking studies towards exploring potential anti-androgen activity of selected phytochemicals against Prostate Cancer. Sci Rep 2017; 7:1955. [PMID: 28512306 PMCID: PMC5434041 DOI: 10.1038/s41598-017-02023-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/04/2017] [Indexed: 01/07/2023] Open
Abstract
Prostate cancer (PCa) is the second most common malignancy amongst men worldwide. Under PCa maintenance therapy drugs acting as antagonists/partial agonists of hormone receptors against the prostate tissue are used in clinical practices. Prominent drugs being Cyproterone acetate, Flutamide, Bicalutamide, they not only cause acute and long-term toxicity, but also develops drug resistance among patients. Our focus has been on phytochemicals which do not exhibit any cytotoxicity and have significant androgen receptor (AR) inhibition activity. As Protein- Ligand interactions play a key role in structure based drug design, so by using molecular docking, we screened 803 phytochemicals and investigated their binding affinity against AR. The three dimensional (3D) structure of AR was retrieved from Protein Data Bank, and docked with 3D Pubchem structures of 803 phytochemicals using Argus Lab. Molecular docking and drug likeness studies were made using ADMET properties while Lipinski's rule of five was performed for the phytochemicals to evaluate their anti-prostate cancer activity. The results showed that Isobavachin exhibited best binding affinity of -13.73 kcal/mol with AR followed by Glabranin, Anthocyanin and Eriosemation. Our studies therefore reveal that these four phytochemicals could be promising candidates for further evaluation for PCa prevention or management.
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Affiliation(s)
- Anshika N Singh
- Symbiosis School of Biological Sciences, Symbiosis International University, Gram- Lavale; Taluka - Mulshi, Pune, India
| | - Meghna M Baruah
- Symbiosis School of Biological Sciences, Symbiosis International University, Gram- Lavale; Taluka - Mulshi, Pune, India
| | - Neeti Sharma
- Symbiosis School of Biological Sciences, Symbiosis International University, Gram- Lavale; Taluka - Mulshi, Pune, India.
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Zheng AW, Chen YQ, Zhao LQ, Feng JG. Myricetin induces apoptosis and enhances chemosensitivity in ovarian cancer cells. Oncol Lett 2017; 13:4974-4978. [PMID: 28588737 DOI: 10.3892/ol.2017.6031] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 01/19/2017] [Indexed: 12/21/2022] Open
Abstract
Ovarian cancer is the most lethal type of gynecological cancer and is the fifth leading cause of cancer-associated mortality in females globally. The majority of patients with ovarian cancer suffer from recurrent, progressive disease, due to the acquisition of a resistance phenotype towards various conventional chemotherapy drugs. Although paclitaxel has been demonstrated to be effective against ovarian tumors, there have been reports of the development of a resistant phenotype against Taxol® treatment. The multidrug resistance (MDR)-1/P-glycoprotein has previously been demonstrated to be associated with the acquisition of paclitaxel resistance in certain ovarian tumors. Therefore, the screening of novel drug candidates able to target MDR-1 in ovarian cancer cells and increase the sensitivity to Taxol® is required in order to improve the treatment of this disease. In the present study, the underlying mechanisms by which the dietary flavonoid myricetin enhances the cytotoxic potential of paclitaxel in ovarian cancer cells, was investigated. It was observed that myricetin induced significant cytotoxicity in A2780 and OVCAR3 ovarian cancer cells, with the IC50 value obtained at 25 µM. Myricetin treatment also resulted in the induction of apoptosis in the two cell lines, accompanied by the modulation of certain pro- and anti-apoptotic markers. It was also determined that the pre-incubation of ovarian cancer cells with a lower dose of myricetin was able to increase the cytotoxicity of paclitaxel, due to the significant downregulation of MDR-1 in these cells.
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Affiliation(s)
- Ai-Wen Zheng
- Department of Gynecologic Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, P.R. China
| | - Ya-Qing Chen
- Department of Gynecologic Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, P.R. China
| | - Ling-Qin Zhao
- Department of Gynecologic Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, P.R. China
| | - Jian-Guo Feng
- Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, P.R. China
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Navarro-Retamal C, Caballero J. Flavonoids as CDK1 Inhibitors: Insights in Their Binding Orientations and Structure-Activity Relationship. PLoS One 2016; 11:e0161111. [PMID: 27517610 PMCID: PMC4982677 DOI: 10.1371/journal.pone.0161111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 07/29/2016] [Indexed: 01/20/2023] Open
Abstract
In the last years, the interactions of flavonoids with protein kinases (PKs) have been described by using crystallographic experiments. Interestingly, different orientations have been found for one flavonoid inside different PKs and different chemical substitutions lead to different orientations of the flavonoid scaffold inside one PK. Accordingly, orientation predictions of novel analogues could help to the design of flavonoids with high PK inhibitory activities. With this in mind, we studied the binding modes of 37 flavonoids (flavones and chalcones) inside the cyclin-dependent PK CDK1 using docking experiments. We found that the compounds under study adopted two different orientations into the active site of CDK1 (orientations I and II in the manuscript). In addition, quantitative structure-activity relationship (QSAR) models using CoMFA and CoMSIA methodologies were constructed to explain the trend of the CDK1 inhibitory activities for the studied flavonoids. Template-based and docking-based alignments were used. Models developed starting from docking-based alignment were applied for describing the whole dataset and compounds with orientation I. Adequate R2 and Q2 values were obtained by each method; interestingly, only hydrophobic and hydrogen bond donor fields describe the differential potency of the flavonoids as CDK1 inhibitors for both defined alignments and subsets. Our current application of docking and QSAR together reveals important elements to be drawn for the design of novel flavonoids with increased PK inhibitory activities.
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Affiliation(s)
- Carlos Navarro-Retamal
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, 2 Norte 685, Casilla 721, Talca, Chile
| | - Julio Caballero
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, 2 Norte 685, Casilla 721, Talca, Chile
- * E-mail:
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Roles of Dietary Phytoestrogens on the Regulation of Epithelial-Mesenchymal Transition in Diverse Cancer Metastasis. Toxins (Basel) 2016; 8:toxins8060162. [PMID: 27231938 PMCID: PMC4926129 DOI: 10.3390/toxins8060162] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 05/18/2016] [Accepted: 05/19/2016] [Indexed: 12/31/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) plays a key role in tumor progression. The cells undergoing EMT upregulate the expression of cell motility-related proteins and show enhanced migration and invasion. The hallmarks of EMT in cancer cells include changed cell morphology and increased metastatic capabilities in cell migration and invasion. Therefore, prevention of EMT is an important tool for the inhibition of tumor metastasis. A novel preventive therapy is needed, such as treatment of natural dietary substances that are nontoxic to normal human cells, but effective in inhibiting cancer cells. Phytoestrogens, such as genistein, resveratrol, kaempferol and 3,3′-diindolylmethane (DIM), can be raised as possible candidates. They are plant-derived dietary estrogens, which are found in tea, vegetables and fruits, and are known to have various biological efficacies, including chemopreventive activity against cancers. Specifically, these phytoestrogens may induce not only anti-proliferation, apoptosis and cell cycle arrest, but also anti-metastasis by inhibiting the EMT process in various cancer cells. There have been several signaling pathways found to be associated with the induction of the EMT process in cancer cells. Phytoestrogens were demonstrated to have chemopreventive effects on cancer metastasis by inhibiting EMT-associated pathways, such as Notch-1 and TGF-beta signaling. As a result, phytoestrogens can inhibit or reverse the EMT process by upregulating the expression of epithelial phenotypes, including E-cadherin, and downregulating the expression of mesenchymal phenotypes, including N-cadherin, Snail, Slug, and vimentin. In this review, we focused on the important roles of phytoestrogens in inhibiting EMT in many types of cancer and suggested phytoestrogens as prominent alternative compounds to chemotherapy.
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