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Potential Role of Natural Antioxidant Products in Oncological Diseases. Antioxidants (Basel) 2023; 12:antiox12030704. [PMID: 36978952 PMCID: PMC10045077 DOI: 10.3390/antiox12030704] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/14/2023] Open
Abstract
Nutrition has a significant effect and a crucial role in disease prevention. Low consumption of fruit and vegetables and a sedentary lifestyle are closely related with the onset and development of many types of cancer. Recently, nutraceuticals have gained much attention in cancer research due to their pleiotropic effects and relatively non-toxic behavior. In fact, although in the past there have been conflicting results on the role of some antioxidant compounds as allies against cancer, numerous recent clinical studies highlight the efficacy of dietary phytochemicals in the prevention and treatment of cancer. However, further investigation is necessary to gain a deeper understanding of the potential anticancer capacities of dietary phytochemicals as well as the mechanisms of their action. Therefore, this review examined the current literature on the key properties of the bioactive components present in the diet, such as carotenoids, polyphenols, and antioxidant compounds, as well as their use in cancer therapy. The review focused on potential chemopreventive properties, evaluating their synergistic effects with anticancer drugs and, consequently, the side effects associated with current cancer treatments.
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Should We ‘Eat a Rainbow’? An Umbrella Review of the Health Effects of Colorful Bioactive Pigments in Fruits and Vegetables. Molecules 2022; 27:molecules27134061. [PMID: 35807307 PMCID: PMC9268388 DOI: 10.3390/molecules27134061] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 12/30/2022] Open
Abstract
Health promotion campaigns have advocated for individuals to ‘eat a rainbow’ of fruits and vegetables (FV). However, the literature has only focused on individual color pigments or individual health outcomes. This umbrella review synthesized the evidence on the health effects of a variety of color-associated bioactive pigments found in FV (carotenoids, flavonoids, betalains and chlorophylls), compared to placebo or low intakes. A systematic search of PubMed, EMBASE, CINAHL and CENTRAL was conducted on 20 October 2021, without date limits. Meta-analyzed outcomes were evaluated for certainty via the GRADE system. Risk of bias was assessed using the Centre for Evidence-Based Medicine critical appraisal tools. A total of 86 studies were included, 449 meta-analyzed health outcomes, and data from over 37 million participants were identified. A total of 42% of health outcomes were improved by color-associated pigments (91% GRADE rating very low to low). Unique health effects were identified: n = 6 red, n = 10 orange, n = 3 yellow, n = 6 pale yellow, n = 3 white, n = 8 purple/blue and n = 1 green. Health outcomes associated with multiple color pigments were body weight, lipid profile, inflammation, cardiovascular disease, mortality, type 2 diabetes and cancer. Findings show that color-associated FV variety may confer additional benefits to population health beyond total FV intake.
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Liu F, Peng Y, Qiao Y, Huang Y, Song F, Zhang M, Song F. Consumption of flavonoids and risk of hormone-related cancers: a systematic review and meta-analysis of observational studies. Nutr J 2022; 21:27. [PMID: 35545772 PMCID: PMC9092883 DOI: 10.1186/s12937-022-00778-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/29/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Flavonoids seem to have hormone-like and anti-hormone properties so that the consumption of flavonoids may have potential effects on hormone-related cancers (HRCs), but the findings have been inconsistent so far. This meta-analysis was aimed to explore the association between flavonoids intake and HRCs risk among observational studies. METHODS Qualified articles, published on PubMed, EMBASE, and China National Knowledge Infrastructure (CNKI) from January 1999 to March 2022 and focused on relationships between flavonoids (total, subclass of and individual flavonoids) and HRCs (breast, ovarian, endometrial, thyroid, prostate and testicular cancer), were retrieved for pooled analysis. Random effects models were performed to calculate the pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs). Funnel plots and Begg's/Egger's test were used to evaluate the publication bias. Subgroup analyses and sensitivity analyses were conducted to explore the origins of heterogeneity. RESULTS All included studies were rated as medium or high quality. Higher consumption of flavonols (OR = 0.85, 95% CI: 0.76-0.94), flavones (OR = 0.85, 95% CI: 0.77-0.95) and isoflavones (OR = 0.87, 95% CI: 0.82-0.92) was associated with a decreased risk of women-specific cancers (breast, ovarian and endometrial cancer), while the higher intake of total flavonoids was linked to a significantly elevated risk of prostate cancer (OR = 1.11, 95% CI: 1.02-1.21). A little evidence implied that thyroid cancer risk was augmented with the higher intake of flavones (OR = 1.24, 95% CI: 1.03-1.50) and flavanones (OR = 1.31, 95% CI: 1.09-1.57). CONCLUSIONS The present study suggests evidence that intake of total flavonoids, flavonols, flavones, flavanones, flavan-3-ols and isoflavones would be associated with a lower or higher risk of HRCs, which perhaps provides guidance for diet guidelines to a certain extent. TRIAL REGISTRATION This protocol has been registered on PROSPERO with registration number CRD42020200720 .
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Affiliation(s)
- Fubin Liu
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Yu Peng
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Yating Qiao
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Yubei Huang
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Fengju Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Ming Zhang
- Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen, 518020, Guangdong, China.
| | - Fangfang Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China.
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China.
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China.
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Galván-Portillo M, Vázquez-Salas RA, Hernández-Pérez JG, Blanco-Muñoz J, López-Carrillo L, Torres-Sánchez L. Dietary flavonoid patterns and prostate cancer: evidence from a Mexican population-based case-control study. Br J Nutr 2021; 127:1-9. [PMID: 34256878 DOI: 10.1017/s0007114521002646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Flavonoids are a broad group of bioactive compounds with anticarcinogenic effects on the prostate that have been scarcely evaluated in Latin American populations. Our objective was to evaluate the association between dietary patterns of flavonoid intake and prostate cancer (PC) in a population-based case-control study carried out in Mexico City. Based on a semi-quantitative FFQ with a frame reference of 3 years before diagnosis or interview, we used an updated database for estimating the daily intake (mg/d) of flavones, flavonols and flavanols for 395 confirmed incident PC cases and 797 population controls matched by age (± 5 years). Histological PC differentiation was evaluated using the Gleason score at diagnosis. Flavonoid dietary intake patterns (FDIP) were determined through principal component analysis, and their association with PC was estimated using logistic regression models. Three FDIP were identified: gallate pattern (GP) characterised by (-)-epicatechin-3-O-gallate, (-)-epigallocatechin-3-O-gallate and (+)-gallocatechin; luteolin pattern (LP) characterised by luteolin and (-)-epigallocatechin-3-O-gallate; and a mixed pattern (MP) that included (+)-catechin, (-)-epicatechin and quercetin. A higher GP (ORT3 v.T1 = 0·47; 95 % CI 0·33, 0·66) and LP intake (ORT3 v. T1 = 0·39; 95 % CI 0·27, 0·59) were associated with a decreased PC likelihood. In contrast, a higher MP intake (ORT3 v. T1 = 2·32; 95 % CI 1·67, 3·23) increased PC likelihood. The possible differential and synergistic anticarcinogenic role of flavonoid compounds in PC deserves further study.
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Affiliation(s)
- Marcia Galván-Portillo
- Center for Population Health Research, National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera, CP 62100Cuernavaca, Morelos, Mexico
| | - Ruth Argelia Vázquez-Salas
- National Council for Science and Technology (CONACYT), National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera. CP 62100Cuernavaca, Morelos, Mexico
| | - Jesús Gibran Hernández-Pérez
- Center for Population Health Research, National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera, CP 62100Cuernavaca, Morelos, Mexico
| | - Julia Blanco-Muñoz
- Center for Population Health Research, National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera, CP 62100Cuernavaca, Morelos, Mexico
| | - Lizbeth López-Carrillo
- Center for Population Health Research, National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera, CP 62100Cuernavaca, Morelos, Mexico
| | - Luisa Torres-Sánchez
- Center for Population Health Research, National Institute of Public Health of Mexico, Av. Universidad No. 655, Colonia Santa María Ahuacatitlán, Cerrada Los Pinos y Caminera, CP 62100Cuernavaca, Morelos, Mexico
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Ghanavati M, Clark CCT, Bahrami A, Teymoori F, Movahed M, Sohrab G, Hejazi E. Dietary intake of polyphenols and total antioxidant capacity and risk of prostate cancer: A case-control study in Iranian men. Eur J Cancer Care (Engl) 2020; 30:e13364. [PMID: 33174661 DOI: 10.1111/ecc.13364] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 10/01/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Prostate cancer (PCa) is one of the leading causes, globally, of cancer-related mortality. Previous studies have reported an inverse relationship between some food items or dietary patterns and prostate cancer risk. Polyphenols, as antioxidant and anti-inflammatory dietary components, have been associated with a reduced risk of PCa, whilst dietary indices such as total antioxidant capacity are good predictors of PCa risk. OBJECTIVE The purpose of this study was to conduct a case-control study on the association between polyphenol intake and DTAC (dietary total antioxidant capacity) and PCa risk in men. METHOD 205 hospital-based controls and 97 newly diagnosed PCa patients were asked about their dietary intakes using a validated questionnaire. The polyphenol contents (flavonoids, lignans, stilbenes and phenolic acids) of foods and beverages were calculated. TAC was obtained using a comprehensive database consisting of the total antioxidant content of more than 3000 food and beverages. Logistic regression was used to determine the odds ratios (OR), with 95% confidence intervals (CI), of PCa according to categories of polyphenol intake and TAC. RESULTS When comparing the highest and the lowest tertile of total polyphenol (OR: 0.12; 95% CI: 0.03-0.41), lignans (OR: 0.14; 95% CI: 0.04-0.41), phenolic acids (OR: 0.18; 95% CI: 0.05-0.57) and some flavonoid subgroups intake including flavan-3-ols (OR: 0.24; 95% CI: 0.08-0.67), flavanones (OR: 0.10; 95% CI: 0.03-0.31) and flavones (OR: 0.33; 95% CI: 0.12-0.87), we observed a significant decreasing trend in the risk of PCa (p for trend<0.05). CONCLUSION The results suggest that the consumption of some polyphenols can significantly reduce the risk of PCa.
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Affiliation(s)
- Matin Ghanavati
- Student Research Committee, (Department and Faculty of Nutrition Sciences and Food Technology), Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, CV15FB, UK
| | - Alireza Bahrami
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farshad Teymoori
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Movahed
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Golbon Sohrab
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Hejazi
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Ramesh P, Srinivasa Rao V, Hong YA, Reddy PM, Hu A. Molecular Design, Synthesis, and Biological Evaluation of 2-Hydroxy-3-Chrysino Dithiocarbamate Derivatives. Molecules 2019; 24:molecules24173038. [PMID: 31438621 PMCID: PMC6749404 DOI: 10.3390/molecules24173038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 11/16/2022] Open
Abstract
A series of 2-hydroxy-3-chrysino dithiocarbamate derivatives (3a–k) were designed, synthesized, and characterized for their structure determination by 1H NMR, 13C NMR, and HRMS (ESI) spectral data. They were screened for their in vitro biological activities against a panel of selected bacterial and fungal strains. These antimicrobial studies indicate that some of the analogues manifested significant activity compared to standard drugs. Among the synthetic analogues (3a–k), compounds 3d, 3f, and 3j exhibited very good antibacterial activity and compounds 3d, 3f, and 3h showed very good antifungal activity compared to the standard drugs penicillin and itrazole, respectively. The compounds 3e, 3g, and 3h showed moderate antibacterial activity and the compounds 3j and 3k showed moderate antifungal activity. Molecular docking studies were performed and the experimental antimicrobial screening results were also correlated with the binding energy values obtained by molecular docking. The synthesized chrysin analogues (3a–k) have obeyed Lipinski’s “rule of five” and have drug-likeness.
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Affiliation(s)
- Pulabala Ramesh
- Department of Chemistry, SR&BGNR. Government College (A), Khammam 507 002, India
- Department of Chemistry, Osmania University, Hyderabad 500 007, India
| | | | - Yi-An Hong
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu-Chi University, Hualien 97071, Taiwan
| | - P. Muralidhar Reddy
- Department of Chemistry, Osmania University, Hyderabad 500 007, India
- Correspondence: (P.M.R.); (A.H.); Tel.: +91-9848792423 (P.M.R.); +886-3-8565301 (ext. 2334 or 2335) (A.H.); Fax: +886-3-8571917 (A.H.)
| | - Anren Hu
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu-Chi University, Hualien 97071, Taiwan
- Correspondence: (P.M.R.); (A.H.); Tel.: +91-9848792423 (P.M.R.); +886-3-8565301 (ext. 2334 or 2335) (A.H.); Fax: +886-3-8571917 (A.H.)
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Reale G, Russo GI, Di Mauro M, Regis F, Campisi D, Giudice AL, Marranzano M, Ragusa R, Castelli T, Cimino S, Morgia G. Association between dietary flavonoids intake and prostate cancer risk: A case-control study in Sicily. Complement Ther Med 2018; 39:14-18. [DOI: 10.1016/j.ctim.2018.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 10/16/2022] Open
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Mamouni K, Zhang S, Li X, Chen Y, Yang Y, Kim J, Bartlett MG, Coleman IM, Nelson PS, Kucuk O, Wu D. A Novel Flavonoid Composition Targets Androgen Receptor Signaling and Inhibits Prostate Cancer Growth in Preclinical Models. Neoplasia 2018; 20:789-799. [PMID: 29981500 PMCID: PMC6034581 DOI: 10.1016/j.neo.2018.06.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/04/2018] [Accepted: 06/11/2018] [Indexed: 12/25/2022] Open
Abstract
The high prevalence and long latency period of prostate cancer (PCa) provide a unique opportunity to control disease progression with dietary and nutraceutical approaches. We developed ProFine, a standardized composition of luteolin, quercetin, and kaempferol, and investigated its potential as a nutraceutical for PCa in preclinical models. The three ingredients of ProFine demonstrated synergistic in vitro cytotoxicity and effectively induced apoptosis in PCa cells. ProFine markedly affected the transcriptome of PCa cells, suppressed the expression of androgen receptor, and inhibited androgen-regulated genes. Oral administration of ProFine did not exhibit obvious toxicities in mice, and the three ingredients retained their individual pharmacokinetic and bioavailability profiles. Importantly, ProFine significantly retarded the growth of PCa xenografts in athymic nude mice and extended the survival of animals. This study provides preclinical evidence supporting the promise of ProFine as a safe, efficacious, and affordable intervention to control PCa progression and improve clinical outcomes.
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Affiliation(s)
- Kenza Mamouni
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Shumin Zhang
- Department of Urology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Xin Li
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Yanhua Chen
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Yang Yang
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Jaeah Kim
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, USA
| | - Michael G. Bartlett
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, USA
| | - Ilsa M. Coleman
- Division of Human Biology, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Peter S. Nelson
- Division of Human Biology, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Omer Kucuk
- Department of Urology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA,Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Daqing Wu
- Molecular Oncology and Biomarkers Program, Georgia Cancer Center; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, USA,Department of Urology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA,MetCure Therapeutics LLC, Atlanta, GA, USA,Address all correspondence to: Dr. Daqing Wu, Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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Ribeiro NC, Campos MS, Santos MB, Ayusso GM, Vilamaior PS, Regasini LO, Taboga SR, Biancardi MF, Perez AP, Santos FC. Prepubertal chrysin exposure upregulates either AR in male ventral prostate or AR and ERα in Skene's paraurethral gland of pubertal and adult gerbils. Fitoterapia 2018; 124:137-144. [DOI: 10.1016/j.fitote.2017.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/29/2017] [Accepted: 11/01/2017] [Indexed: 01/12/2023]
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Rothwell JA, Knaze V, Zamora-Ros R. Polyphenols: dietary assessment and role in the prevention of cancers. Curr Opin Clin Nutr Metab Care 2017; 20:512-521. [PMID: 28915128 DOI: 10.1097/mco.0000000000000424] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
PURPOSE OF REVIEW Polyphenols are a large and diverse family of phytochemicals widely consumed by humans. Here we summarize the latest epidemiological evidence for associations between cancer risk and polyphenol intake, taking into account difficulties in the accurate estimation of exposure. RECENT FINDINGS Flavonoids are the most studied subgroup of polyphenols with regard to cancer risk. In recent epidemiological studies, total flavonoid intake has rarely been associated with a reduction in cancer risk. However, isoflavones, whose main dietary source is soy foods, plausibly reduce the risk of colorectal, breast, and prostate cancers, especially in Asian countries. Findings depend heavily upon the assessment of polyphenol intake, which is usually measured by food frequency questionnaires coupled to databases of food polyphenol composition. To a lesser extent, nutritional biomarkers have been used whenever estimating associations of polyphenol intake with cancer. SUMMARY Polyphenol intake may mitigate cancer risk but this depends on cancer site, the subgroup of compounds under study, and accurate assessment of dietary exposure. Further work must better characterize the effects of intake of different flavonoid subclasses and begin to investigate the role of phenolic acids and other minor polyphenol classes.
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Affiliation(s)
- Joseph A Rothwell
- aNutrition and Metabolism Section, Biomarkers Group, International Agency for Research on Cancer (IARC), Lyon, France bUnit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
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Sak K. Intake of Individual Flavonoids and Risk of Carcinogenesis: Overview of Epidemiological Evidence. Nutr Cancer 2017; 69:1119-1150. [PMID: 29083244 DOI: 10.1080/01635581.2017.1367934] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several epidemiological findings have demonstrated that specific flavonoids can be responsible for reduction of the risk of certain cancer types. However, these results are still rather limited, inconclusive and controversial. Therefore, in this comprehensive review article the findings reported to date about the associations between dietary intake of individual flavonoid compounds and cancer incidence are compiled and analyzed. Also, the possible reasons for inconsistencies are brought forth and discussed. As diet is a potentially modifiable factor in our behavioral choices, further large-scale prospective studies with longer follow-up times, different populations, various doses and exposure timing as well as diverse well-controlled confounders are highly needed to confirm or disprove the current epidemiological knowledge about the role of flavonoids on cancer risk. Regarding the promising data to date, more research on bioavailability, metabolism and biological action mechanisms of these plant secondary metabolites is also encouraged.
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Affiliation(s)
- Katrin Sak
- a NGO Praeventio , Näituse 22-3, Tartu , Estonia
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Grosso G, Godos J, Lamuela-Raventos R, Ray S, Micek A, Pajak A, Sciacca S, D'Orazio N, Del Rio D, Galvano F. A comprehensive meta-analysis on dietary flavonoid and lignan intake and cancer risk: Level of evidence and limitations. Mol Nutr Food Res 2017; 61. [DOI: 10.1002/mnfr.201600930] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/30/2016] [Accepted: 12/02/2016] [Indexed: 01/21/2023]
Affiliation(s)
- Giuseppe Grosso
- Integrated Cancer Registry of Catania-Messina-Siracusa-Enna; Azienda Ospedaliero-Universitaria Policlinico-Vittorio Emanuele; Catania Italy
- NNEdPro Global Centre for Nutrition and Health; St John's Innovation Centre; Cambridge UK
| | - Justyna Godos
- Integrated Cancer Registry of Catania-Messina-Siracusa-Enna; Azienda Ospedaliero-Universitaria Policlinico-Vittorio Emanuele; Catania Italy
| | - Rosa Lamuela-Raventos
- Biomedical Research Center Network on Obesity and Nutrition (CIBERobn) Physiopathology of Obesity and Nutrition; Institute of Health Carlos III; Madrid Spain
- Nutrition and Food Science Department-XaRTA; INSA; University of Barcelona; Barcelona Spain
| | - Sumantra Ray
- NNEdPro Global Centre for Nutrition and Health; St John's Innovation Centre; Cambridge UK
- Medical Research Council (MRC) Human Nutrition Research Unit; Cambridge UK
| | - Agnieszka Micek
- Department of Epidemiology and Population Studies; Jagiellonian University Medical College; Krakow Poland
| | - Andrzej Pajak
- Department of Epidemiology and Population Studies; Jagiellonian University Medical College; Krakow Poland
| | - Salvatore Sciacca
- Integrated Cancer Registry of Catania-Messina-Siracusa-Enna; Azienda Ospedaliero-Universitaria Policlinico-Vittorio Emanuele; Catania Italy
| | - Nicolantonio D'Orazio
- Department of Medical and Oral Sciences and Biotechnologies; University of Chieti; Chieti Italy
| | - Daniele Del Rio
- NNEdPro Global Centre for Nutrition and Health; St John's Innovation Centre; Cambridge UK
- Department of Food Science; University of Parma; Parma Italy
| | - Fabio Galvano
- Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
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Dietary Flavones as Dual Inhibitors of DNA Methyltransferases and Histone Methyltransferases. PLoS One 2016; 11:e0162956. [PMID: 27658199 PMCID: PMC5033486 DOI: 10.1371/journal.pone.0162956] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/31/2016] [Indexed: 12/14/2022] Open
Abstract
Methylation of DNA and histone proteins are mutually involved in the epigenetic regulation of gene expression mediated by DNA methyltransferases (DNMTs) and histone methyltransferases (HMTs). DNMTs methylate cytosine residues within gene promoters, whereas HMTs catalyze the transfer of methyl groups to lysine and arginine residues of histone proteins, thus causing chromatin condensation and transcriptional repression, which play an important role in the pathogenesis of cancer. The potential reversibility of epigenetic alterations has encouraged the development of dual pharmacologic inhibitors of DNA and histone methylation as anticancer therapeutics. Dietary flavones can affect epigenetic modifications that accumulate over time and have shown anticancer properties, which are undefined. Through DNA binding and in silico protein-ligand docking studies with plant flavones viz. Apigenin, Chrysin and Luteolin, the effect of flavones on DNA and histone methylation was assessed. Spectroscopic analysis of flavones with calf-thymus DNA revealed intercalation as the dominant binding mode, with specific binding to a GC-rich sequence in the DNA duplex. A virtual screening approach using a model of the catalytic site of DNMT and EZH2 demonstrated that plant flavones are tethered at both ends inside the catalytic pocket of DNMT and EZH2 by means of hydrogen bonding. Epigenetic studies performed with flavones exhibited a decrease in DNMT enzyme activity and a reversal of the hypermethylation of cytosine bases in the DNA and prevented cytosine methylation in the GC-rich promoter sequence incubated with the M.SssI enzyme. Furthermore, a marked decrease in HMT activity and a decrease in EZH2 protein expression and trimethylation of H3K27 were noted in histones isolated from cancer cells treated with plant flavones. Our results suggest that dietary flavones can alter DNMT and HMT activities and the methylation of DNA and histone proteins that regulate epigenetic modifications, thus providing a significant anticancer effect by altering epigenetic processes involved in the development of cancer.
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