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Dietary Isothiocyanates: Novel Insights into the Potential for Cancer Prevention and Therapy. Int J Mol Sci 2023; 24:ijms24031962. [PMID: 36768284 PMCID: PMC9916827 DOI: 10.3390/ijms24031962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023] Open
Abstract
Diet plays an important role in health. A high intake of plant chemicals such as glucosinolates/isothiocyanates can promote optimal health and decrease the risk of cancer. Recent research has discovered more novel mechanisms of action for the effects of isothiocyanates including the modulation of tumor microenvironment, the inhibition of the self-renewal of stem cells, the rearrangement of multiple pathways of energy metabolism, the modulation of microbiota, and protection against Helicobacter pylori. However, the hormetic/biphasic effects of isothiocyanates may make the recommendations complicated. Isothiocyanates possess potent anti-cancer activities based on up-to-date evidence from in vitro and in vivo studies. The nature of hormesis suggests that the benefits or risks of isothiocyanates largely depend on the dose and endpoint of interest. Isothiocyanates are a promising class of cancer-preventative phytochemicals, but researchers should be aware of the potential adverse (and hormetic) effects. In the authors' opinion, dietary isothiocyanates are better used as adjunctive treatments in combination with known anti-cancer drugs. The application of nano-formulations and the delivery of isothiocyanates are also discussed in this review.
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Terracina S, Petrella C, Francati S, Lucarelli M, Barbato C, Minni A, Ralli M, Greco A, Tarani L, Fiore M, Ferraguti G. Antioxidant Intervention to Improve Cognition in the Aging Brain: The Example of Hydroxytyrosol and Resveratrol. Int J Mol Sci 2022; 23:ijms232415674. [PMID: 36555317 PMCID: PMC9778814 DOI: 10.3390/ijms232415674] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Both physiological and pathological aging processes induce brain alterations especially affecting the speed of processing, working memory, conceptual reasoning and executive functions. Many therapeutic approaches to reduce the impact of brain aging on cognitive functioning have been tested; unfortunately, there are no satisfactory results as a single therapy. As aging is partly contributed by free radical reactions, it has been proposed that exogenous antioxidants could have a positive impact on both aging and its associated manifestations. The aim of this report is to provide a summary and a subsequent review of the literature evidence on the role of antioxidants in preventing and improving cognition in the aging brain. Manipulation of endogenous cellular defense mechanisms through nutritional antioxidants or pharmacological compounds represents an innovative approach to therapeutic intervention in diseases causing brain tissue damage, such as neurodegeneration. Coherently with this notion, antioxidants, especially those derived from the Mediterranean diet such as hydroxytyrosol and resveratrol, seem to be able to delay and modulate the cognitive brain aging processes and decrease the occurrence of its effects on the brain. The potential preventive activity of antioxidants should be evaluated in long-term exposure clinical trials, using preparations with high bioavailability, able to bypass the blood-brain barrier limitation, and that are well standardized.
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Affiliation(s)
- Sergio Terracina
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Carla Petrella
- Institute of Biochemistry and Cell Biology, IBBC—CNR, 00185 Rome, Italy
| | - Silvia Francati
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Marco Lucarelli
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Christian Barbato
- Institute of Biochemistry and Cell Biology, IBBC—CNR, 00185 Rome, Italy
| | - Antonio Minni
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | - Massimo Ralli
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | - Antonio Greco
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | - Luigi Tarani
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Marco Fiore
- Institute of Biochemistry and Cell Biology, IBBC—CNR, 00185 Rome, Italy
- Correspondence: (M.F.); (G.F.)
| | - Giampiero Ferraguti
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
- Correspondence: (M.F.); (G.F.)
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Zhang S, Duan S, Xie Z, Bao W, Xu B, Yang W, Zhou L. Epigenetic Therapeutics Targeting NRF2/KEAP1 Signaling in Cancer Oxidative Stress. Front Pharmacol 2022; 13:924817. [PMID: 35754474 PMCID: PMC9218606 DOI: 10.3389/fphar.2022.924817] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/18/2022] [Indexed: 02/05/2023] Open
Abstract
The transcription factor nuclear factor erythroid 2-related factor 2 (NRF2) and its negative regulator kelch-like ECH-associated protein 1 (KEAP1) regulate various genes involved in redox homeostasis, which protects cells from stress conditions such as reactive oxygen species and therefore exerts beneficial effects on suppression of carcinogenesis. In addition to their pivotal role in cellular physiology, accumulating innovative studies indicated that NRF2/KEAP1-governed pathways may conversely be oncogenic and cause therapy resistance, which was profoundly modulated by epigenetic mechanism. Therefore, targeting epigenetic regulation in NRF2/KEAP1 signaling is a potential strategy for cancer treatment. In this paper, the current knowledge on the role of NRF2/KEAP1 signaling in cancer oxidative stress is presented, with a focus on how epigenetic modifications might influence cancer initiation and progression. Furthermore, the prospect that epigenetic changes may be used as therapeutic targets for tumor treatment is also investigated.
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Affiliation(s)
- Shunhao Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Sining Duan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhuojun Xie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wanlin Bao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Xu
- Department of Stomatology, Panzhihua Central Hospital, Panzhihua, China
| | - Wenbin Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, Department of Medical Affairs, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lingyun Zhou
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu, China
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Allison J, Kaliszewska A, Uceda S, Reiriz M, Arias N. Targeting DNA Methylation in the Adult Brain through Diet. Nutrients 2021; 13:nu13113979. [PMID: 34836233 PMCID: PMC8618930 DOI: 10.3390/nu13113979] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/05/2021] [Accepted: 11/05/2021] [Indexed: 02/07/2023] Open
Abstract
Metabolism and nutrition have a significant role in epigenetic modifications such as DNA methylation, which can influence gene expression. Recently, it has been suggested that bioactive nutrients and gut microbiota can alter DNA methylation in the central nervous system (CNS) through the gut-brain axis, playing a crucial role in modulating CNS functions and, finally, behavior. Here, we will focus on the effect of metabolic signals in shaping brain DNA methylation during adulthood. We will provide an overview of potential interactions among diet, gastrointestinal microbiome and epigenetic alterations on brain methylation and behavior. In addition, the impact of different diet challenges on cytosine methylation dynamics in the adult brain will be discussed. Finally, we will explore new ways to modulate DNA hydroxymethylation, which is particularly abundant in neural tissue, through diet.
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Affiliation(s)
- Joseph Allison
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Aleksandra Kaliszewska
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Sara Uceda
- BRABE Group, Department of Psychology, Faculty of Life and Natural Sciences, University of Nebrija, C/del Hostal, 28248 Madrid, Spain; (S.U.); (M.R.)
| | - Manuel Reiriz
- BRABE Group, Department of Psychology, Faculty of Life and Natural Sciences, University of Nebrija, C/del Hostal, 28248 Madrid, Spain; (S.U.); (M.R.)
| | - Natalia Arias
- BRABE Group, Department of Psychology, Faculty of Life and Natural Sciences, University of Nebrija, C/del Hostal, 28248 Madrid, Spain; (S.U.); (M.R.)
- Institute of Neurosciences of the Principality of Asturias (INEUROPA), 33003 Oviedo, Spain
- Health Research Institute of the Principality of Asturias—ISPA, 33011 Oviedo, Spain
- Correspondence: ; Tel.: +34-91-452-1101
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Liu YR, Wang PY, Xie N, Xie SY. MicroRNAs as Therapeutic Targets for Anticancer Drugs in Lung Cancer Therapy. Anticancer Agents Med Chem 2021; 20:1883-1894. [PMID: 32538735 DOI: 10.2174/1871520620666200615133011] [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] [Received: 12/18/2019] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) are short, non-coding RNA molecules that regulate gene expression by translational repression or deregulation of messenger RNAs. Accumulating evidence suggests that miRNAs play various roles in the development and progression of lung cancers. Although their precise roles in targeted cancer therapy are currently unclear, miRNAs have been shown to affect the sensitivity of tumors to anticancer drugs. A large number of recent studies have demonstrated that some anticancer drugs exerted antitumor activities by affecting the expression of miRNAs and their targeted genes. These studies have elucidated the specific biological mechanism of drugs in tumor suppression, which provides a new idea or basis for their clinical application. In this review, we summarized the therapeutic mechanisms of drugs in lung cancer therapy through their effects on miRNAs and their targeted genes, which highlights the roles of miRNAs as targets in lung cancer therapy.
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Affiliation(s)
- Yuan-Rong Liu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Tumor Molecular Biology in Binzhou Medical University, Binzhou Medical University, YanTai, ShanDong, 264003, China
| | - Ping-Yu Wang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Tumor Molecular Biology in Binzhou Medical University, Binzhou Medical University, YanTai, ShanDong, 264003, China
| | - Ning Xie
- Department of Chest Surgery, YanTaiShan Hospital, YanTai, 264000, ShanDong, China
| | - Shu-Yang Xie
- Department of Biochemistry and Molecular Biology, Key Laboratory of Tumor Molecular Biology in Binzhou Medical University, Binzhou Medical University, YanTai, ShanDong, 264003, China
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Regulation of carcinogenesis and mediation through Wnt/β-catenin signaling by 3,3'-diindolylmethane in an enzalutamide-resistant prostate cancer cell line. Sci Rep 2021; 11:1239. [PMID: 33441906 PMCID: PMC7806813 DOI: 10.1038/s41598-020-80519-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 12/18/2020] [Indexed: 12/09/2022] Open
Abstract
Enzalutamide (ENZ) is an important drug used to treat castration-resistant prostate cancer (CRPC), which inhibits androgen receptor (AR) signaling. Previous study showed that 3,3′-diindolylmethane (DIM) is an AR antagonist that also inhibits Wnt signaling and epithelial-mesenchymal transition (EMT). To investigate whether combined treatment with ENZ and DIM can overcome ENZ resistance by regulating Wnt signaling to inhibit AR signaling and EMT in ENZ-resistant prostate cancer cells, 22Rv1 cells were cultured in normal medium and treated with ENZ, DIM, and DIM with ENZ. Exposure of ENZ-resistant cells to both DIM and ENZ significantly inhibited cell proliferation without cytotoxicity and invasion in comparison with the control. DIM significantly increased the E-cadherin expression and inhibited the expressions of Vimentin and Fibronectin, subsequently inhibiting EMT. Co-treatment with ENZ and DIM significantly increased the expressions of GSK3β and APC and decreased the β-catenin protein expression, causing inhibition of Wnt signaling and AR expression, it also significantly decreased the AR-v7 expression and down-regulated AR signaling. Via suppression of Wnt and AR signaling, co-treatment increased the E-cadherin and decreased the Vimentin and Fibronectin RNA and protein expressions, then inhibited EMT. Co-treatment with DIM and ENZ regulated Wnt signaling to reduce not only the AR expression, but also the AR-v7 expression, indicating suppression of EMT that inhibits cancer cell proliferation, invasion and migration to ameliorate ENZ resistance.
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Kumari A, Bhawal S, Kapila S, Yadav H, Kapila R. Health-promoting role of dietary bioactive compounds through epigenetic modulations: a novel prophylactic and therapeutic approach. Crit Rev Food Sci Nutr 2020; 62:619-639. [PMID: 33081489 DOI: 10.1080/10408398.2020.1825286] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The epigenome is an overall epigenetic state of an organism, which is as important as that of the genome for normal development and functioning of an individual. Epigenetics involves heritable but reversible changes in gene expression through alterations in DNA methylation, histone modifications and regulation of non-coding RNAs in cells, without any change in the DNA sequence. Epigenetic changes are owned by various environmental factors including pollution, microbiota and diet, which have profound effects on epigenetic modifiers. The bioactive compounds present in the diet mainly include curcumin, resveratrol, catechins, quercetin, genistein, sulforaphane, epigallocatechin-3-gallate, alkaloids, vitamins, and peptides. Bioactive compounds released during fermentation by the action of microbes also have a significant effect on the host epigenome. Besides, recent studies have explored the new insights in vitamin's functions through epigenetic regulation. These bioactive compounds exert synergistic, preventive and therapeutic effects when combined as well as when used with chemotherapeutic agents. Therefore, these compounds have potential of therapeutic agents that could be used as "Epidrug" to treat many inflammatory diseases and various cancers where chemotherapy results have many side effects. In this review, the effect of diet derived bioactive compounds through epigenetic modulations on in vitro and in vivo models is discussed.
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Affiliation(s)
- Ankita Kumari
- Animal Biochemistry Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Shalaka Bhawal
- Animal Biochemistry Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Suman Kapila
- Animal Biochemistry Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Hariom Yadav
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Rajeev Kapila
- Animal Biochemistry Division, ICAR-National Dairy Research Institute, Karnal, India
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Epigenetic Regulation of NRF2/KEAP1 by Phytochemicals. Antioxidants (Basel) 2020; 9:antiox9090865. [PMID: 32938017 PMCID: PMC7555619 DOI: 10.3390/antiox9090865] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 12/12/2022] Open
Abstract
Epigenetics has provided a new dimension to our understanding of nuclear factor erythroid 2–related factor 2/Kelch-like ECH-associated protein 1 (human NRF2/KEAP1 and murine Nrf2/Keap1) signaling. Unlike the genetic changes affecting DNA sequence, the reversible nature of epigenetic alterations provides an attractive avenue for cancer interception. Thus, targeting epigenetic mechanisms in the corresponding signaling networks represents an enticing strategy for therapeutic intervention with dietary phytochemicals acting at transcriptional, post-transcriptional, and post-translational levels. This regulation involves the interplay of histone modifications and DNA methylation states in the human NFE2L2/KEAP1 and murine Nfe2l2/Keap1 genes, acetylation of lysine residues in NRF2 and Nrf2, interaction with bromodomain and extraterminal domain (BET) acetyl “reader” proteins, and non-coding RNAs such as microRNA (miRNA) and long non-coding RNA (lncRNA). Phytochemicals documented to modulate NRF2 signaling act by reversing hypermethylated states in the CpG islands of NFE2L2 or Nfe2l2, via the inhibition of DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), through the induction of ten-eleven translocation (TET) enzymes, or by inducing miRNA to target the 3′-UTR of the corresponding mRNA transcripts. To date, fewer than twenty phytochemicals have been reported as NRF2 epigenetic modifiers, including curcumin, sulforaphane, resveratrol, reserpine, and ursolic acid. This opens avenues for exploring additional dietary phytochemicals that regulate the human epigenome, and the potential for novel strategies to target NRF2 signaling with a view to beneficial interception of cancer and other chronic diseases.
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Miękus N, Marszałek K, Podlacha M, Iqbal A, Puchalski C, Świergiel AH. Health Benefits of Plant-Derived Sulfur Compounds, Glucosinolates, and Organosulfur Compounds. Molecules 2020; 25:molecules25173804. [PMID: 32825600 PMCID: PMC7503525 DOI: 10.3390/molecules25173804] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/10/2020] [Accepted: 08/19/2020] [Indexed: 12/26/2022] Open
Abstract
The broad spectrum of the mechanism of action of immune-boosting natural compounds as well as the complex nature of the food matrices make researching the health benefits of various food products a complicated task. Moreover, many routes are involved in the action of most natural compounds that lead to the inhibition of chronic inflammation, which results in a decrease in the ability to remove a pathogen asymptomatically and is connected to various pathological events, such as cancer. A number of cancers have been associated with inflammatory processes. The current review strives to answer the question of whether plant-derived sulfur compounds could be beneficial in cancer prevention and therapy. This review focuses on the two main sources of natural sulfur compounds: alliaceous and cruciferous vegetables. Through the presentation of scientific data which deal with the study of the chosen compounds in cancer (cell lines, animal models, and human studies), the discussion of food processing’s influence on immune-boosting food content is presented. Additionally, it is demonstrated that there is still a need to precisely demonstrate the bioavailability of sulfur-containing compounds from various types of functional food, since the inappropriate preparation of vegetables can significantly reduce the content of beneficial sulfur compounds. Additionally, there is an urgent need to carry out more epidemiological studies to reveal the benefits of several natural compounds in cancer prevention and therapy.
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Affiliation(s)
- Natalia Miękus
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Hallera 107, 80-416 Gdańsk, Poland;
| | - Krystian Marszałek
- Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, 36 Rakowiecka, 02-532 Warsaw, Poland
- Department of Food Technology and Human Nutrition, Institute of Food Technology and Nutrition, College of Natural Science, University of Rzeszow, Zelwerowicza 2D, 35-601 Rzeszow, Poland
- Correspondence: ; Tel.: +48-22606-36-03
| | - Magdalena Podlacha
- Department of Molecular Biology, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland;
| | - Aamir Iqbal
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Czesław Puchalski
- Department of Bioenergetics and Food Analysis, Faculty of Bogy and Agriculture, University of Rzeszow, Ćwiklińskiej 2D, 35-601 Rzeszow, Poland;
| | - Artur H. Świergiel
- Department of Animal and Human Physiology, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland;
- Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, 36 Rakowiecka, 02-532 Warsaw, Poland
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Khalife H, Skafi N, Fayyad-Kazan M, Badran B. MicroRNAs in breast cancer: New maestros defining the melody. Cancer Genet 2020; 246-247:18-40. [PMID: 32805688 DOI: 10.1016/j.cancergen.2020.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/07/2020] [Accepted: 08/03/2020] [Indexed: 02/06/2023]
Abstract
MicroRNAs, short non-coding single-stranded RNAs, are important regulators and gatekeepers of the coding genes in the human genome. MicroRNAs are highly conserved among species and expressed in different tissues and cell types. They are involved in almost all the biological processes as apoptosis, proliferation, cell cycle arrest and differentiation. Playing all these roles, it is not surprising that the deregulation of the microRNA profile causes a number of diseases including cancer. Breast cancer, the most commonly diagnosed malignancy in women, accounts for the highest cancer-related deaths worldwide. Different microRNAs were shown to be up or down regulated in breast cancer. MicroRNAs can function as oncogenes or tumor suppressors according to their targets. In this review, the most common microRNAs implicated in breast cancer are fully illustrated with their targets. Besides, the review highlights the effect of exosomal microRNA on breast cancer and the effect of microRNAs on drug and therapies resistance as well as the miRNA-based therapeutic strategies used until today.
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Affiliation(s)
- Hoda Khalife
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
| | - Najwa Skafi
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
| | - Mohammad Fayyad-Kazan
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon; Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon.
| | - Bassam Badran
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
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Ishiura Y, Ishimaru H, Watanabe T, Fujimuro M. Sulforaphane Exhibits Cytotoxic Effects against Primary Effusion Lymphoma Cells by Suppressing p38MAPK and AKT Phosphorylation. Biol Pharm Bull 2020; 42:2109-2112. [PMID: 31787726 DOI: 10.1248/bpb.b19-00659] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Primary effusion lymphoma (PEL) is a rare subtype of non-Hodgkin's B-cell lymphoma and is caused by Kaposi's sarcoma-associated herpesvirus (KSHV) in immunosuppressed patients. PEL is an aggressive lymphoma and is frequently resistant to conventional chemotherapies. Sulforaphane (SFN), a natural compound found in cruciferous vegetables and broccoli sprouts, modulates signaling pathways and epigenetic gene expression. However, the anti-proliferative effects of SFN on PEL cells and the underlying mechanisms have not been identified. Here, we found that SFN decreased the viability of KSHV-infected PEL cells compared to KSHV-uninfected B-lymphoma cells. The anti-proliferative effects of SFN on PEL cells were mediated by apoptosis with activating caspases. In addition, SFN inhibited the phosphorylation of p38 mitogen-activated protein kinase (p38MAPK) and AKT in PEL cells. We also showed that p38MAPK and AKT inhibitors reduced PEL cell growth. The constitutive and/or transient activation of p38MAPK and AKT signaling are necessary for the survival and proliferation of PEL cells. Our data and previous literature indicate that SFN represses the phosphorylation of p38MAPK and AKT, which results in PEL cell apoptosis. Moreover, we investigated whether MG132 or sangivamycin (Sangi) in combination with SFN potentiated the cytotoxic effects of SFN on PEL cells. Compared to treatment with SFN alone, the addition of MG132 or Sangi enhanced the cytotoxic activity of SFN in a synergistic manner. In conclusion, the anti-proliferative effects of SFN indicate its potential as a new substance for the treatment of PEL.
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Affiliation(s)
- Yuki Ishiura
- Department of Cell Biology, Kyoto Pharmaceutical University
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12
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Traka MH, Melchini A, Coode-Bate J, Al Kadhi O, Saha S, Defernez M, Troncoso-Rey P, Kibblewhite H, O'Neill CM, Bernuzzi F, Mythen L, Hughes J, Needs PW, Dainty JR, Savva GM, Mills RD, Ball RY, Cooper CS, Mithen RF. Transcriptional changes in prostate of men on active surveillance after a 12-mo glucoraphanin-rich broccoli intervention-results from the Effect of Sulforaphane on prostate CAncer PrEvention (ESCAPE) randomized controlled trial. Am J Clin Nutr 2019; 109:1133-1144. [PMID: 30982861 PMCID: PMC6462431 DOI: 10.1093/ajcn/nqz012] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 01/18/2019] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Epidemiological evidence suggests that consumption of cruciferous vegetables is associated with reduced risk of prostate cancer progression, largely attributed to the biological activity of glucosinolate degradation products, such as sulforaphane derived from glucoraphanin. Because there are few therapeutic interventions for men on active surveillance for prostate cancer to reduce the risk of cancer progression, dietary approaches are an appealing option for patients. OBJECTIVE We evaluated whether consumption of a glucoraphanin-rich broccoli soup for 1 y leads to changes in gene expression in prostate tissue of men with localized prostate cancer. METHODS Forty-nine men on active surveillance completed a 3-arm parallel randomized double-blinded intervention study for 12 mo and underwent transperineal template biopsy procedures and dietary assessment at the start and end of the study. Patients received a weekly 300 mL portion of soup made from a standard broccoli (control) or from 1 of 2 experimental broccoli genotypes with enhanced concentrations of glucoraphanin, delivering 3 and 7 times that of the control, respectively. Gene expression in tissues from each patient obtained before and after the dietary intervention was quantified by RNA sequencing followed by gene set enrichment analyses. RESULTS In the control arm, there were several hundred changes in gene expression in nonneoplastic tissue during the 12 mo. These were associated with an increase in expression of potentially oncogenic pathways including inflammation processes and epithelial-mesenchymal transition. Changes in gene expression and associated oncogenic pathways were attenuated in men on the glucoraphanin-rich broccoli soup in a dose-dependent manner. Although the study was not powered to assess clinical progression, an inverse association between consumption of cruciferous vegetables and cancer progression was observed. CONCLUSION Consuming glucoraphanin-rich broccoli soup affected gene expression in the prostate of men on active surveillance, consistent with a reduction in the risk of cancer progression. This trial was registered at clinicaltrials.gov as NCT01950143.
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Affiliation(s)
- Maria H Traka
- Quadram Institute Bioscience, Norwich, United Kingdom
| | | | - Jack Coode-Bate
- Quadram Institute Bioscience, Norwich, United Kingdom,Department of Urology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom
| | - Omar Al Kadhi
- Quadram Institute Bioscience, Norwich, United Kingdom,Department of Urology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom
| | - Shikha Saha
- Quadram Institute Bioscience, Norwich, United Kingdom
| | | | | | | | | | | | - Laura Mythen
- Quadram Institute Bioscience, Norwich, United Kingdom
| | - Jackie Hughes
- Quadram Institute Bioscience, Norwich, United Kingdom
| | - Paul W Needs
- Quadram Institute Bioscience, Norwich, United Kingdom
| | - Jack R Dainty
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | | | - Robert D Mills
- Department of Urology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom
| | - Richard Y Ball
- Norfolk and Waveney Cellular Pathology Service, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom
| | - Colin S Cooper
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Richard F Mithen
- Quadram Institute Bioscience, Norwich, United Kingdom,Liggins Institute, University of Auckland, New Zealand,Address correspondence to RFM (e-mail: )
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Dayalan Naidu S, Suzuki T, Yamamoto M, Fahey JW, Dinkova‐Kostova AT. Phenethyl Isothiocyanate, a Dual Activator of Transcription Factors NRF2 and HSF1. Mol Nutr Food Res 2018; 62:e1700908. [PMID: 29710398 PMCID: PMC6175120 DOI: 10.1002/mnfr.201700908] [Citation(s) in RCA: 30] [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: 10/30/2017] [Revised: 03/30/2018] [Indexed: 12/19/2022]
Abstract
Cruciferous vegetables are rich sources of glucosinolates which are the biogenic precursor molecules of isothiocyanates (ITCs). The relationship between the consumption of cruciferous vegetables and chemoprotection has been widely documented in epidemiological studies. Phenethyl isothiocyanate (PEITC) occurs as its glucosinolate precursor gluconasturtiin in the cruciferous vegetable watercress (Nasturtium officinale). PEITC has multiple biological effects, including activation of cytoprotective pathways, such as those mediated by the transcription factor nuclear factor erythroid 2 p45-related factor 2 (NRF2) and the transcription factor heat shock factor 1 (HSF1), and can cause changes in the epigenome. However, at high concentrations, PEITC leads to accumulation of reactive oxygen species and cytoskeletal changes, resulting in cytotoxicity. Underlying these activities is the sulfhydryl reactivity of PEITC with cysteine residues in its protein targets. This chemical reactivity highlights the critical importance of the dose of PEITC for achieving on-target selectivity, which should be carefully considered in the design of future clinical trials.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Takafumi Suzuki
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Masayuki Yamamoto
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Jed W. Fahey
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of International HealthCenter for Human NutritionJohns Hopkins University Bloomberg School of Public HealthBaltimoreMD21205USA
| | - Albena T. Dinkova‐Kostova
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Jacqui Wood Cancer CentreDivision of Cancer ResearchSchool of MedicineUniversity of DundeeDundeeDD1 9SYScotlandUK
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Nontoxic Glucomoringin-Isothiocyanate (GMG-ITC) Rich Soluble Extract Induces Apoptosis and Inhibits Proliferation of Human Prostate Adenocarcinoma Cells (PC-3). Nutrients 2018; 10:nu10091174. [PMID: 30150582 PMCID: PMC6163982 DOI: 10.3390/nu10091174] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/14/2018] [Accepted: 08/17/2018] [Indexed: 01/08/2023] Open
Abstract
The incidence of prostate cancer malignancy along with other cancer types is increasing worldwide, resulting in high mortality rate due to lack of effective medications. Moringa oleifera has been used for the treatment of communicable and non-communicable ailments across tropical countries, yet, little has been documented regarding its effect on prostate cancer. We evaluated the acute toxicity and apoptosis inducing effect of glucomoringin-isothiocyanate rich soluble extracts (GMG-ITC-RSE) from M. oleifera in vivo and in vitro, respectively. Glucomoringin was isolated, identified, and characterized using fundamental analytical chemistry tools where Sprague-Dawley (SD) rats, murine fibroblast (3T3), and human prostate adenocarcinoma cells (PC-3) were used for acute toxicity and bioassays experiments. GMG-ITC-RSE did not instigate adverse toxic reactions to the animals even at high doses (2000 mg/kg body weight) and affected none of the vital organs in the rats. The extract exhibited high levels of safety in 3T3 cells, where more than 90% of the cells appeared viable when treated with the extract in a time-dependent manner even at high dose (250 µg/mL). GMG-ITC-RSE significantly triggered morphological aberrations distinctive to apoptosis observed under microscope. These findings obviously revealed the putative safety of GMG-ITC-RSE in vivo and in vitro, in addition to its anti-proliferative effect on PC-3 cells.
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Anticancer Activity of Sulforaphane: The Epigenetic Mechanisms and the Nrf2 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:5438179. [PMID: 29977456 PMCID: PMC6011061 DOI: 10.1155/2018/5438179] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/27/2018] [Accepted: 05/08/2018] [Indexed: 12/21/2022]
Abstract
Sulforaphane (SFN), a compound derived from cruciferous vegetables that has been shown to be safe and nontoxic, with minimal/no side effects, has been extensively studied due to its numerous bioactivities, such as anticancer and antioxidant activities. SFN exerts its anticancer effects by modulating key signaling pathways and genes involved in the induction of apoptosis, cell cycle arrest, and inhibition of angiogenesis. SFN also upregulates a series of cytoprotective genes by activating nuclear factor erythroid-2- (NF-E2-) related factor 2 (Nrf2), a critical transcription factor activated in response to oxidative stress; Nrf2 activation is also involved in the cancer-preventive effects of SFN. Accumulating evidence supports that epigenetic modification is an important factor in carcinogenesis and cancer progression, as epigenetic alterations often contribute to the inhibition of tumor-suppressor genes and the activation of oncogenes, which enables cells to acquire cancer-promoting properties. Studies on the mechanisms underlying the anticancer effects of SFN have shown that SFN can reverse such epigenetic alterations in cancers by targeting DNA methyltransferases (DNMTs), histone deacetyltransferases (HDACs), and noncoding RNAs. Therefore, in this review, we will discuss the anticancer activities of SFN and its mechanisms, with a particular emphasis on epigenetic modifications, including epigenetic reactivation of Nrf2.
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16
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Gerhauser C. Impact of dietary gut microbial metabolites on the epigenome. Philos Trans R Soc Lond B Biol Sci 2018; 373:20170359. [PMID: 29685968 PMCID: PMC5915727 DOI: 10.1098/rstb.2017.0359] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2018] [Indexed: 12/18/2022] Open
Abstract
Within the past decade, epigenetic mechanisms and their modulation by natural products have gained increasing interest. Dietary bioactive compounds from various sources, including green tea, soya, fruit and berries, cruciferous vegetables, whole grain foods, fish and others, have been shown to target enzymes involved in epigenetic gene regulation, including DNA methyltransferases, histone acetyltransferases, deacetylases and demethylases in vitro and in cell culture. Also, many dietary agents were shown to alter miRNA expression. In vivo studies in animal models and humans are still limited. Recent research has indicated that the gut microbiota and gut microbial metabolites might be important mediators of diet-epigenome interactions. Inter-individual differences in the gut microbiome might affect release, metabolism and bioavailability of dietary agents and explain variability in response to intervention in human studies. Only a few microbial metabolites, including folate, phenolic acids, S-(-)equol, urolithins, isothiocyanates, and short- and long-chain fatty acids have been tested with respect to their potential to influence epigenetic mechanisms. Considering that a complex mixture of intermediary and microbial metabolites is present in human circulation, a more systematic interdisciplinary investigation of nutri-epigenetic activities and their impact on human health is called for.This article is part of a discussion meeting issue 'Frontiers in epigenetic chemical biology'.
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Affiliation(s)
- Clarissa Gerhauser
- Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), Heidelberg, Germany
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17
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Ruddraraju KV, Zhang ZY. Covalent inhibition of protein tyrosine phosphatases. MOLECULAR BIOSYSTEMS 2018; 13:1257-1279. [PMID: 28534914 DOI: 10.1039/c7mb00151g] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Protein tyrosine phosphatases (PTPs) are a large family of 107 signaling enzymes that catalyze the hydrolytic removal of phosphate groups from tyrosine residues in a target protein. The phosphorylation status of tyrosine residues on proteins serve as a ubiquitous mechanism for cellular signal transduction. Aberrant function of PTPs can lead to many human diseases, such as diabetes, obesity, cancer, and autoimmune diseases. As the number of disease relevant PTPs increases, there is urgency in developing highly potent inhibitors that are selective towards specific PTPs. Most current efforts have been devoted to the development of active site-directed and reversible inhibitors for PTPs. This review summarizes recent progress made in the field of covalent inhibitors to target PTPs. Here, we discuss the in vivo and in vitro inactivation of various PTPs by small molecule-containing electrophiles, such as Michael acceptors, α-halo ketones, epoxides, and isothiocyanates, etc. as well as oxidizing agents. We also suggest potential strategies to transform these electrophiles into isozyme selective covalent PTP inhibitors.
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Affiliation(s)
- Kasi Viswanatharaju Ruddraraju
- Department of Medicinal Chemistry and Molecular Pharmacology, Department of Chemistry, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA.
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18
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Interplay between regulation by methylation and noncoding RNAs in cancers. Eur J Cancer Prev 2018; 27:418-424. [PMID: 29557800 DOI: 10.1097/cej.0000000000000433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Cancer is one of the most important health problems today; therefore, many researchers are focusing on exploring the mechanisms underlying its development and treatment. The field of cancer epigenetics has flourished in recent decades, and studies have shown that different epigenetic events, such as DNA methylation, histone modification, and noncoding RNA regulation, work together to influence cancer development and progression. In this short review, we summarize the interactions between methylation and noncoding RNAs that affect cancer development.
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Sulforaphane inhibits human bladder cancer cell invasion by reversing epithelial-to-mesenchymal transition via directly targeting microRNA-200c/ZEB1 axis. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Martin SL, Kala R, Tollefsbol TO. Mechanisms for the Inhibition of Colon Cancer Cells by Sulforaphane through Epigenetic Modulation of MicroRNA-21 and Human Telomerase Reverse Transcriptase (hTERT) Down-regulation. Curr Cancer Drug Targets 2018; 18:97-106. [PMID: 28176652 PMCID: PMC5577390 DOI: 10.2174/1568009617666170206104032] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 03/15/2016] [Accepted: 09/30/2016] [Indexed: 01/13/2023]
Abstract
BACKGROUND Epigenetic modulations such as histone modifications are becoming increasingly valued for their ability to modify genes without altering the DNA sequence. Many bioactive compounds have been shown to alter genetic and epigenetic profiles in various cancers. Sulforaphane (SFN), an isothiocyanate found in cruciferous vegetables such as kale, cabbage and broccoli sprouts, is one of the most potent histone deacetylase inhibitors (HDACis) to date. Recently, it has been identified that HDACis may play a vital role in regulating microRNAs (miRs) and human telomerase reverse transcriptase (hTERT). OBJECTIVE The aim of our study was to identify if aberrant HDAC, hTERT and miR levels could be regulated through novel dietary-based approaches in colorectal cancer (CRC) cells. METHODS We evaluated the in vitro epigenetic effects of SFN on CRC cells by MTT assay, cellular density assay, real-time reverse transcriptase-polymerase chain reaction (RT-PCR), cell cycle analysis, western-blot assay, HDAC activity assay and teloTAGGG telomerase PCR Elisa assay. RESULTS We demonstrated the inhibitory effects of physiologically relevant concentrations of SFN in both HCT116 and RKO CRC cells, and showed for the first time that SFN treatment decreased cell density, significantly inhibited cell viability and induced apoptosis in CRC cells. We also found that practical doses of SFN significantly down-regulated oncogenic miR-21, HDAC and hTERT mRNA, protein and enzymatic levels in CRC cells. CONCLUSION Our studies suggest that the regulation of HDAC, hTERT and miR-21 is a promising approach for delaying and/or preventing CRC and may be accomplished via the consumption of SFN in cruciferous vegetables.
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Affiliation(s)
- Samantha L Martin
- Department of Biology, University of Alabama at Birmingham, 1300 University Boulevard, Birmingham, AL 35294, United States
| | - Rishabh Kala
- Department of Biology, University of Alabama at Birmingham, 1300 University Boulevard, Birmingham, AL 35294, United States
| | - Trygve O Tollefsbol
- Department of Biology, University of Alabama at Birmingham, 1300 University Boulevard, Birmingham, AL 35294, United States
- Comprehensive Center for Healthy Aging, University of Alabama Birmingham, 1530 3rd Avenue South, Birmingham, AL 35294, United States
- Comprehensive Cancer Center, University of Alabama Birmingham, 1802 6th Avenue South, Birmingham, AL 35294, United States
- Nutrition Obesity Research Center, University of Alabama Birmingham, 1675 University Boulevard, Birmingham, AL 35294, United States
- Comprehensive Diabetes Center, University of Alabama Birmingham, 1825 University Boulevard, Birmingham, AL 35294, United States
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21
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Gründemann C, Huber R. Chemoprevention with isothiocyanates - From bench to bedside. Cancer Lett 2017; 414:26-33. [PMID: 29111351 DOI: 10.1016/j.canlet.2017.10.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/10/2017] [Accepted: 10/20/2017] [Indexed: 12/15/2022]
Abstract
Isothiocyanates (ITCs) are naturally occurring hydrolization products from glucosinolates (GLSs) in brassicaceae and in epidemiological studies their intake has been weakly to moderately inversely correlated with the risk of colorectal cancer, prostate cancer and lung cancer. Numerous preclinical studies demonstrate chemopreventive mode of actions of ITCs, mainly related to a.) detoxification (induction of phase II enzymes), b.) anti-inflammatory properties by down-regulation of NFkappaB activity, c.) cyclin-mediated cell cycle arrest and d.) epigenetic modulation by inhibition of histone deacetylase activity. First prospective clinical trials were promising in patients with risk of prostate cancer recurrence. The glutathione-S-transferase gene expression seems to play a major role in the individual susceptibility towards ITCs. Safety issues are widely unclear and should be more addressed in future studies because ITCs can, in low concentrations, compromise the function of human immune cells and might impair genome stability.
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Affiliation(s)
- Carsten Gründemann
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Roman Huber
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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22
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Lin JF, Tsai TF, Yang SC, Lin YC, Chen HE, Chou KY, Hwang TIS. Benzyl isothiocyanate induces reactive oxygen species-initiated autophagy and apoptosis in human prostate cancer cells. Oncotarget 2017; 8:20220-20234. [PMID: 28423628 PMCID: PMC5386757 DOI: 10.18632/oncotarget.15643] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 12/03/2016] [Indexed: 11/25/2022] Open
Abstract
Benzyl isothiocyanate (BITC) in cruciferous plants, which are part of the human diet, has been shown to induce apoptosis in various types of cancer. In this study, we show that BITC effectively suppresses the growth of cultured human prostate cancer cells (CRW-22Rv1 and PC3) by causing mitochondrial membrane potential loss, caspase 3/7 activation and DNA fragmentation. Furthermore, BITC induces ROS generation in these cells. The induction of apoptosis by BITC was significantly attenuated in the presence of N-acetylcysteine (NAC) and catalase (CAT), well-studied ROS scavengers. The induction of autophagy in BITC-treated cells were also diminished by the application of NAC or CAT. In addition, BITC-induced apoptosis and autophagy were both enhanced by the pretreatment of catalase inhibitor, 3-Amino-1,2,4-triazole (3-AT). Pretreatment with specific inhibitors of autophagy (3-methyladenine or bafilomycin A1) or apoptosis (Z-VAD-FMK) reduced BITC-induced autophagy and apoptosis, respectively, but did not abolish BITC-induced ROS generation. In conclusion, the present study provides evidences that BITC caused prostate cancer cell death was dependent on the ROS status, and clarified the mechanism underlying BITC-induced cell death, which involves the induction of ROS production, autophagy and apoptosis, and the relationship between these three important processes.
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Affiliation(s)
- Ji-Fan Lin
- Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan
| | - Te-Fu Tsai
- Division of Urology, Department of Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan.,Division of Urology, School of Medicine, Fu-Jen Catholic University, New Taipei, 242, Taiwan
| | - Shan-Che Yang
- Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan
| | - Yi-Chia Lin
- Division of Urology, Department of Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan
| | - Hung-En Chen
- Division of Urology, Department of Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan
| | - Kuang-Yu Chou
- Division of Urology, Department of Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan.,Division of Urology, School of Medicine, Fu-Jen Catholic University, New Taipei, 242, Taiwan
| | - Thomas I-Sheng Hwang
- Division of Urology, Department of Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, 111, Taiwan.,Division of Urology, School of Medicine, Fu-Jen Catholic University, New Taipei, 242, Taiwan.,Department of Urology, Taipei Medical University, Taipei, 111, Taiwan
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23
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Palomera-Sanchez Z, Watson GW, Wong CP, Beaver LM, Williams DE, Dashwood RH, Ho E. The phytochemical 3,3'-diindolylmethane decreases expression of AR-controlled DNA damage repair genes through repressive chromatin modifications and is associated with DNA damage in prostate cancer cells. J Nutr Biochem 2017; 47:113-119. [PMID: 28582660 DOI: 10.1016/j.jnutbio.2017.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 04/21/2017] [Accepted: 05/16/2017] [Indexed: 11/28/2022]
Abstract
Androgen receptor (AR) is a transcription factor involved in normal prostate physiology and prostate cancer (PCa) development. 3,3'-Diindolylmethane (DIM) is a promising phytochemical agent against PCa that affects AR activity and epigenetic regulators in PCa cells. However, whether DIM suppresses PCa via epigenetic regulation of AR target genes is unknown. We assessed epigenetic regulation of AR target genes in LNCaP PCa cells and showed that DIM treatment led to epigenetic suppression of AR target genes involved in DNA repair (PARP1, MRE11, DNA-PK). Decreased expression of these genes was accompanied by an increase in repressive chromatin marks, loss of AR occupancy and EZH2 recruitment to their regulatory regions. Decreased DNA repair gene expression was associated with an increase in DNA damage (γH2Ax) and up-regulation of genomic repeat elements LINE1 and α-satellite. Our results suggest that DIM suppresses AR-dependent gene transcription through epigenetic modulation, leading to DNA damage and genome instability in PCa cells.
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Affiliation(s)
| | - Gregory W Watson
- Biological and Population Health Sciences, Oregon State University, Corvallis, OR
| | - Carmen P Wong
- Biological and Population Health Sciences, Oregon State University, Corvallis, OR; Moore Family Center, Oregon State University, Corvallis, OR
| | - Laura M Beaver
- Biological and Population Health Sciences, Oregon State University, Corvallis, OR; Moore Family Center, Oregon State University, Corvallis, OR; Linus Pauling Institute, Oregon State University, Corvallis, OR
| | - David E Williams
- Linus Pauling Institute, Oregon State University, Corvallis, OR; Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR
| | - Roderick H Dashwood
- Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M Science Center, Houston, TX; Department of Nutrition & Food Science, Texas A&M University, College Station, TX; Department of Clinical Cancer Prevention, MD Anderson Cancer Center, Houston, TX; Department of Molecular & Cellular Medicine, Texas A&M University College of Medicine, College Station, TX
| | - Emily Ho
- Biological and Population Health Sciences, Oregon State University, Corvallis, OR; Moore Family Center, Oregon State University, Corvallis, OR; Linus Pauling Institute, Oregon State University, Corvallis, OR.
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Russo GL, Vastolo V, Ciccarelli M, Albano L, Macchia PE, Ungaro P. Dietary polyphenols and chromatin remodeling. Crit Rev Food Sci Nutr 2017; 57:2589-2599. [DOI: 10.1080/10408398.2015.1062353] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gian Luigi Russo
- Istituto di Scienze dell'Alimentazione, Consiglio Nazionale delle Ricerche, Avellino, Italy
| | - Viviana Vastolo
- Dipartimento di Scienze Mediche Traslazionali, UniversitàdegliStudi di Napoli ‘Federico II’, Napoli, Italy
| | - Marco Ciccarelli
- Dipartimento di Scienze Mediche Traslazionali, UniversitàdegliStudi di Napoli ‘Federico II’, Napoli, Italy
| | - Luigi Albano
- Dipartimento di Scienze Mediche Traslazionali, UniversitàdegliStudi di Napoli ‘Federico II’, Napoli, Italy
| | - Paolo Emidio Macchia
- Dipartimento di Medicina Clinica e Chirurgia, Università degli Studi di Napoli ‘Federico II’, Napoli, Italy
| | - Paola Ungaro
- Istituto di Endocrinologia ed Oncologia Sperimentale ‘G. Salvatore’, Consiglio Nazionaledelle Ricerche, Napoli, Italy
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Nachat A, Turoff-Ortmeyer S, Liu C, Mcculloch M. PEITC in End-Stage B-Cell Prolymphocytic Leukemia: Case Report of Possible Sensitization to Salvage R-CHOP. Perm J 2017; 20:74-80. [PMID: 27168399 DOI: 10.7812/tpp/15-153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION B-cell prolymphocytic leukemia (B-PLL) is a rare, aggressive leukemia distinct from chronic lymphocytic leukemia, with median survival of only 3 years. B-PLL is resistant to most chemotherapy and newer targeted therapies such as alemtuzumab and thalidomide. Phenylethyl isothiocyanate (PEITC) is a natural compound from horseradish with evidence for therapeutic potential in multiple leukemia types. CASE PRESENTATION Here we present a case report of a 53-year-old man whose chronic lymphocytic leukemia transformed to end-stage B-PLL, disqualifying him for allogenic stem cell transplantation. He was treated with PEITC followed by salvage R-CHOP (Rituximab, Cyclophosphamide, Hydroxydaunorubicin [doxorubicin hydrochloride], Oncovin [vincristine sulfate], Prednisone or Prednisolone) chemotherapy, which led to normalized white blood cell count and disease stabilization that requalified him for allogenic peripheral stem-cell transplant therapy. We conducted a systematic review to analyze and interpret the potential contribution of PEITC to his unexpectedly favorable R-CHOP response. Following sequential 8 weeks of PEITC/pentostatin and 6 cycles of R-CHOP, the patient received allogenic peripheral blood stem cell transplant on an outpatient basis and remains well at the time of this publication, with no evidence of CD20+ small B-cells. DISCUSSION Given the limited data for R-CHOP in B-PLL, this patient's recovery suggests presensitization of B-PLL cells toward R-CHOP, potentially justifying further investigation.
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Affiliation(s)
- Arian Nachat
- Physician Lead for Integrative Medicine at Walnut Creek Hospital in CA.
| | | | - Chunnan Liu
- Medical Oncologist at Walnut Creek Hospital in CA.
| | - Michael Mcculloch
- Chief of Research for Integrative Medicine at the Pine Street Foundation in San Anselmo and at Walnut Creek Hospital in CA.
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Wang DX, Zou YJ, Zhuang XB, Chen SX, Lin Y, Li WL, Lin JJ, Lin ZQ. Sulforaphane suppresses EMT and metastasis in human lung cancer through miR-616-5p-mediated GSK3β/β-catenin signaling pathways. Acta Pharmacol Sin 2017; 38:241-251. [PMID: 27890917 DOI: 10.1038/aps.2016.122] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/20/2016] [Indexed: 12/13/2022] Open
Abstract
Sulforaphane is a common antioxidant selectively abundant in cruciferous plants, which exhibits effective anti-cancer actions in control of tumorigenesis or progression of various cancers. A recent study has shown that sulforaphane attenuates the EGFR signaling pathway in non-small cell lung cancer (NSCLC), suggesting its potential anti-metastatic effects. In this study we assessed the involvement of sulforaphane and miR-616-5p in epithelial-mesenchymal transition (EMT) and NSCLC metastasis. Sulforaphane suppressed the cell proliferation in human NSCLC cell lines H1299, 95C and 95D with IC50 values of 9.52±1.23, 9.04±1.90 and 17.35±2.03 μmol/L, respectively. At low concentrations (1-5 μmol/L), sulforaphane dose-dependently inhibited the migration and invasion of 95D and H1299 cells with relatively high metastatic potential. The anti-metastatic action of sulforaphane was confirmed in 95D and H1299 cell xenografts in vivo. In fresh NSCLC tissue samples from 179 patients, miR-616-5p levels were upregulated in late-stage NSCLCs, and strongly correlated with risk of NSCLC recurrence and metastasis. Consistent with the clinic observation, miR-616-5p levels in the 3 NSCLC cell lines were correlated with their metastatic ability, and were decreased by sulforaphane treatment. Silencing miR-616-5p markedly suppressed the migration and invasion of 95D cells in vitro and NSCLC metastasis in vivo. Further studies revealed that miR-616-5p directly targeted GSK3β and decreased its expression, whereas sulforaphane decreased miR-616-5p levels by histone modification, and followed by inactivation of the GSK3β/β-catenin signaling pathway and inhibition of EMT, which was characterized by loss of epithelial markers and acquisition of a mesenchymal phenotype in NSCLC cells. Our findings suggest that sulforaphane is a potential adjuvant chemotherapeutic agent for the prevention of NSCLC recurrence and metastasis, and miR-616-5p can be clinically utilized as a biomarker or therapeutic target to inhibit metastasis.
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Abbaoui B, Telu KH, Lucas CR, Thomas-Ahner JM, Schwartz SJ, Clinton SK, Freitas MA, Mortazavi A. The impact of cruciferous vegetable isothiocyanates on histone acetylation and histone phosphorylation in bladder cancer. J Proteomics 2017; 156:94-103. [PMID: 28132875 DOI: 10.1016/j.jprot.2017.01.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 12/07/2016] [Accepted: 01/25/2017] [Indexed: 12/17/2022]
Abstract
Cruciferous vegetable intake is associated with reduced risk of bladder cancer, yet mechanisms remain unclear. Cruciferous vegetable isothiocyanates (ITCs), namely sulforaphane (SFN) and erucin (ECN), significantly inhibit histone deacetylase (HDAC) activity in human bladder cancer cells representing superficial to invasive biology (59-83% inhibition with 20μM, 48h treatment), and in bladder cancer xenografts (59±3% ECN inhibition). Individual HDACs inhibited by SFN and ECN include HDACs 1, 2, 4 and 6. Interestingly, global acetylation status of histones H3 or H4 remain unaltered. The interplay between HDAC inhibition and modest modulation of AcH3 and AcH4 status is partially explained by decreased histone acetyl transferase activity (48.8±5.3%). In contrast, a significant decrease in phosphorylation status of all isoforms of histone H1 was observed, concomitant with increased phosphatase PP1β and PP2A activity. Together, these findings suggest that ITCs modulate histone status via HDAC inhibition and phosphatase enhancement. This allows for reduced levels of histone H1 phosphorylation, a marker correlated with human bladder cancer progression. Therefore, ITC-mediated inhibition of histone H1 phosphorylation presents a novel direction of research in elucidating epidemiological relationships and supports future food-based prevention strategies. SIGNIFICANCE Collectively, our findings suggest that the cruciferous vegetable isothiocyanates: sulforaphane (SFN) and erucin (ECN), impact histones status in bladder cancer cells by modulating specific HDACs and HATs, and enhancing phosphatase activity, resulting in reduction of histone H1 phosphorylation. These findings are significant due to the fact that our previous work positively correlated histone H1 phosphorylation with bladder cancer carcinogenesis and progression. Therefore, we propose that SFN and ECN may inhibit bladder carcinogenesis via epigenetic modulation of gene expression associated with histone H1 phosphorylation. These efforts may elucidate biomarkers useful in epidemiologic studies related to cruciferous vegetable intake and cancer risk or provide intermediate biomarkers for food-based clinical intervention studies in high-risk cohorts.
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Affiliation(s)
- Besma Abbaoui
- The Integrated Biomedical Science Graduate Program, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Kelly H Telu
- Department of Chemistry, College of Arts and Sciences, The Ohio State University, Columbus, OH 43210, USA; Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Christopher R Lucas
- The Integrated Biomedical Science Graduate Program, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | | | - Steven J Schwartz
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA; Department of Food Science and Technology, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Steven K Clinton
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA; Division of Medical Oncology, Department of Internal Medicine, College of Medicine; The Ohio State University, Columbus, OH 43210, USA
| | - Michael A Freitas
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA; Department of Molecular Virology, Immunology and Medical Genetics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Amir Mortazavi
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA; Division of Medical Oncology, Department of Internal Medicine, College of Medicine; The Ohio State University, Columbus, OH 43210, USA.
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Biersack B. Non-coding RNA/microRNA-modulatory dietary factors and natural products for improved cancer therapy and prevention: Alkaloids, organosulfur compounds, aliphatic carboxylic acids and water-soluble vitamins. Noncoding RNA Res 2016; 1:51-63. [PMID: 30159411 PMCID: PMC6096427 DOI: 10.1016/j.ncrna.2016.09.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/01/2016] [Accepted: 09/01/2016] [Indexed: 02/06/2023] Open
Abstract
Non-coding small RNA molecules, the microRNAs (miRNAs), contribute decisively to the epigenetic regulation processes in cancer cells. Problematic pathogenic properties of cancer cells and the response of cancers towards anticancer drugs are highly influenced by miRNAs. Both increased drug activity and formation of tumor resistance are regulated by miRNAs. Further to this, the survival and proliferation of cancer cells and the formation of metastases is based on the modulated expression of certain miRNAs. In particular, drug-resistant cancer stem-like cells (CSCs) depend on the presence and absence of specific miRNAs. Fortunately, several small molecule natural compounds were discovered that target miRNAs involved in the modulation of tumor aggressiveness and drug resistance. This review gives an overview of the effects of a selection of naturally occurring small molecules (alkaloids, organosulfur compounds, aliphatic carboxylic acids and water-soluble vitamins) on miRNAs that are closely tangled with cancer diseases.
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Key Words
- AM, allyl mercaptan
- AOM, azoxymethane
- Aliphatic carboxylic acids
- Alkaloids
- Anticancer drugs
- CPT, camptothecin
- DADS, diallyl disulfide
- DHA, docosahexaenoic acid
- DIM, 3,3′-diindolylmethane
- EPA, eicosapentaenoic acid
- FA, folic acid
- GTC, green tea catechins
- I3C, indole-3-carbinol
- MiRNA
- NaB, sodium butyrate
- Organosulfur compounds
- PEITC, phenethylisothiocyanate
- PUFA, polyunsaturated fatty acid
- SAMC, S-allylmercaptocysteine
- SFN, sulforaphane
- TSA, trichostatin A
- Water-soluble vitamins
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A female adnexal tumor of probable Wolffian origin showing positive O-6-methylguanine-DNA methyltransferase methylation. Obstet Gynecol Sci 2016; 59:328-32. [PMID: 27462603 PMCID: PMC4958682 DOI: 10.5468/ogs.2016.59.4.328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 01/07/2016] [Accepted: 02/08/2016] [Indexed: 11/08/2022] Open
Abstract
Female adnexal tumor of probable Wolffian origin (FATWO) is a rare disease entity that arises from the mesonephric duct system. FATWO is different than other gynecological cancers in terms of embryology. Here, we describe the case of a 52-year-old woman with malignant FATWO. The patient underwent explorative laparotomy and surgical staging after a frozen section revealed malignancy. Detailed examination of the pathologic findings were consistent with FATWO. Counseling and further testing were provided to the patient to assess the risk of germline mutation and epigenetic change. An O-6-methylguanine-DNA methyltransferase gene methylation test was positive, and all other tests were normal. This is the first study to report a case of O-6-methylguanine-DNA methyltransferase methylation with FATWO in Korea.
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Becker TM, Juvik JA. The Role of Glucosinolate Hydrolysis Products from Brassica Vegetable Consumption in Inducing Antioxidant Activity and Reducing Cancer Incidence. Diseases 2016; 4:E22. [PMID: 28933402 PMCID: PMC5456278 DOI: 10.3390/diseases4020022] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/31/2016] [Accepted: 06/03/2016] [Indexed: 12/14/2022] Open
Abstract
The bioactivity of glucosinolates (GSs), and more specifically their hydrolysis products (GSHPs), has been well documented. These secondary metabolites evolved in the order Brassicales as plant defense compounds with proven ability to deter or impede the growth of several biotic challenges including insect infestation, fungal and bacterial infection, and competition from other plants. However, the bioactivity of GSHPs is not limited to activity that inhibits these kingdoms of life. Many of these compounds have been shown to have bioactivity in mammalian systems as well, with epidemiological links to cancer chemoprevention in humans supported by in vitro, in vivo, and small clinical studies. Although other chemopreventive mechanisms have been identified, the primary mechanism believed to be responsible for the observed chemoprevention from GSHPs is the induction of antioxidant enzymes, such as NAD(P)H quinone reductase (NQO1), heme oxygenase 1 (HO-1), glutamate-cysteine ligase catalytic subunit (GCLC), and glutathione S transferases (GSTs), through the Keap1-Nrf2-ARE signaling pathway. Induction of this pathway is generally associated with aliphatic isothiocyanate GSHPs, although some indole-derived GSHPs have also been associated with induction of one or more of these enzymes.
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Affiliation(s)
- Talon M Becker
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801-3838, USA.
| | - John A Juvik
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801-3838, USA.
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Lubecka-Pietruszewska K, Kaufman-Szymczyk A, Stefanska B, Cebula-Obrzut B, Smolewski P, Fabianowska-Majewska K. Sulforaphane Alone and in Combination with Clofarabine Epigenetically Regulates the Expression of DNA Methylation-Silenced Tumour Suppressor Genes in Human Breast Cancer Cells. JOURNAL OF NUTRIGENETICS AND NUTRIGENOMICS 2016; 8:91-101. [PMID: 26372775 DOI: 10.1159/000439111] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 07/29/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIM Sporadic breast cancer is frequently associated with aberrant DNA methylation patterns that are reversible and responsive to environmental factors, including diet. In the present study, we investigated the effects of sulforaphane (SFN), a phytochemical from cruciferous vegetables, on the methylation and expression of PTEN and RARbeta2 tumour suppressor genes as well as on the expression of regulators of DNA methylation reaction, DNMT1 , p53 , and p21 , in MCF-7 and MDA-MB-231 human breast cancer cells with different invasive potential. We also evaluate the role of SFN epigenetic effects in support of therapy with clofarabine (ClF) that was recently shown to modulate the epigenome as well. METHODS Promoter methylation and gene expression were estimated using methylation-sensitive restriction analysis and real-time PCR, respectively. RESULTS In both MCF-7 and MDA-MB-231 cells, SFN at IC 50 (22 and 46 μ M , respectively) and a physiologically relevant 10 μ M concentration lead to hypomethylation of PTEN and RARbeta2 promoters with concomitant gene upregulation. The combination of SFN and ClF enhances these effects, resulting in an increase in cell growth arrest and apoptosis at a non-invasive breast cancer stage. CONCLUSIONS Our findings provide evidence that SFN activates DNA methylation-silenced tumour suppressor genes in breast cancer cells and may contribute to SFN-mediated support of therapy with an anti-cancer drug, ClF, increasing its applications in solid tumours.
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Novío S, Cartea ME, Soengas P, Freire-Garabal M, Núñez-Iglesias MJ. Effects of Brassicaceae Isothiocyanates on Prostate Cancer. Molecules 2016; 21:E626. [PMID: 27187332 PMCID: PMC6272898 DOI: 10.3390/molecules21050626] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/13/2016] [Accepted: 05/03/2016] [Indexed: 12/21/2022] Open
Abstract
Despite the major progress made in the field of cancer biology, cancer is still one of the leading causes of mortality, and prostate cancer (PCa) is one of the most encountered malignancies among men. The effective management of this disease requires developing better anticancer agents with greater efficacy and fewer side effects. Nature is a large source for the development of chemotherapeutic agents, with more than 50% of current anticancer drugs being of natural origin. Isothiocyanates (ITCs) are degradation products from glucosinolates that are present in members of the family Brassicaceae. Although they are known for a variety of therapeutic effects, including antioxidant, immunostimulatory, anti-inflammatory, antiviral and antibacterial properties, nowadays, cell line and animal studies have additionally indicated the chemopreventive action without causing toxic side effects of ITCs. In this way, they can induce cell cycle arrest, activate apoptosis pathways, increase the sensitivity of resistant PCa to available chemodrugs, modulate epigenetic changes and downregulate activated signaling pathways, resulting in the inhibition of cell proliferation, progression and invasion-metastasis. The present review summarizes the chemopreventive role of ITCs with a particular emphasis on specific molecular targets and epigenetic alterations in in vitro and in vivo cancer animal models.
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Affiliation(s)
- Silvia Novío
- Lennart Levi Stress and Neuroimmunology Laboratory, School of Medicine and Dentistry, University of Santiago de Compostela, c/San Francisco, s/n, 15782 Santiago de Compostela, A Coruña, Spain.
| | - María Elena Cartea
- Group of Genetics, Breeding and Biochemistry of Brassicas, Misión Biológica de Galicia (CSIC) Aptdo. 28, 36080 Pontevedra, Spain.
| | - Pilar Soengas
- Group of Genetics, Breeding and Biochemistry of Brassicas, Misión Biológica de Galicia (CSIC) Aptdo. 28, 36080 Pontevedra, Spain.
| | - Manuel Freire-Garabal
- Lennart Levi Stress and Neuroimmunology Laboratory, School of Medicine and Dentistry, University of Santiago de Compostela, c/San Francisco, s/n, 15782 Santiago de Compostela, A Coruña, Spain.
| | - María Jesús Núñez-Iglesias
- Lennart Levi Stress and Neuroimmunology Laboratory, School of Medicine and Dentistry, University of Santiago de Compostela, c/San Francisco, s/n, 15782 Santiago de Compostela, A Coruña, Spain.
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Benzyl isothiocyanate but not benzyl nitrile from Brassicales plants dually blocks the COX and LOX pathway in primary human immune cells. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.02.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Yang AY, Kim H, Li W, Kong ANT. Natural compound-derived epigenetic regulators targeting epigenetic readers, writers and erasers. Curr Top Med Chem 2016; 16:697-713. [PMID: 26306989 PMCID: PMC4955582 DOI: 10.2174/1568026615666150826114359] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 08/10/2015] [Indexed: 12/21/2022]
Abstract
Post-translational modifications can affect gene expression in a long-term manner without changes in the primary nucleotide sequence of the DNA. These epigenetic alterations involve dynamic processes that occur in histones, chromatin-associated proteins and DNA. In response to environmental stimuli, abnormal epigenetic alterations cause disorders in the cell cycle, apoptosis and other cellular processes and thus contribute to the incidence of diverse diseases, including cancers. In this review, we will summarize recent studies focusing on certain epigenetic readers, writers, and erasers associated with cancer development and how newly discovered natural compounds and their derivatives could interact with these targets. These advances provide insights into epigenetic alterations in cancers and the potential utility of these alterations as therapeutic targets for the future development of chemopreventive and chemotherapeutic drugs.
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Affiliation(s)
| | | | | | - Ah-Ng Tony Kong
- Rutgers, The State University of New Jersey, Ernest Mario School of Pharmacy, Room 228, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA.
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Guo Y, Yu S, Zhang C, Kong ANT. Epigenetic regulation of Keap1-Nrf2 signaling. Free Radic Biol Med 2015; 88:337-349. [PMID: 26117320 PMCID: PMC4955581 DOI: 10.1016/j.freeradbiomed.2015.06.013] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/01/2015] [Accepted: 06/02/2015] [Indexed: 12/19/2022]
Abstract
The kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2) signaling axis serves as a "master regulator" in response to oxidative/electrophilic stresses and chemical insults through the coordinated induction of a wide array of cytoprotective genes. Therefore, activation of Nrf2 is considered to be an important approach for preventing chronic diseases triggered by stresses and toxins, including cancer. Despite extensive studies suggested that the Keap1-Nrf2 signaling pathway is subject to multiple layers of regulation at the transcriptional, translational, and post-translational levels, the potential epigenetic regulation of Nrf2 and Keap1 has begun to be recognized only in recent years. Epigenetic modifications, heritable alterations in gene expression that occur without changes in the primary DNA sequence, have been reported to be profoundly involved in oxidative stress responses. In this review, we discuss the latest findings regarding the epigenetic regulation of Keap1-Nrf2 signaling by DNA methylation, histone modification, and microRNAs. The crosstalk among these epigenetic modifications in the regulation of Keap1-Nrf2 signaling pathways is also discussed. Studies of the epigenetic modification of Nrf2 and Keap1 have not only enhanced our understanding of this complex cellular defense system but have also provided potential new therapeutic targets for the prevention of certain diseases.
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Affiliation(s)
- Yue Guo
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Siwang Yu
- State Key Laboratory of Natural and Biomimetic Drugs, and Peking University School of Pharmaceutical Sciences, Beijing 100191, PR China.
| | - Chengyue Zhang
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ah-Ng Tony Kong
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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36
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Quercetin reduced inflammation and increased antioxidant defense in rat adjuvant arthritis. Arch Biochem Biophys 2015; 583:150-7. [DOI: 10.1016/j.abb.2015.08.008] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 08/14/2015] [Accepted: 08/17/2015] [Indexed: 01/21/2023]
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37
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Hanschen FS, Herz C, Schlotz N, Kupke F, Bartolomé Rodríguez MM, Schreiner M, Rohn S, Lamy E. The Brassica epithionitrile 1-cyano-2,3-epithiopropane triggers cell death in human liver cancer cells in vitro. Mol Nutr Food Res 2015; 59:2178-89. [PMID: 26251050 DOI: 10.1002/mnfr.201500296] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 07/24/2015] [Accepted: 07/25/2015] [Indexed: 02/04/2023]
Abstract
SCOPE Glucosinolates are secondary metabolites present in Brassica vegetables. Alkenyl glucosinolates are enzymatically degraded forming nitriles or isothiocyanates, but in the presence of epithiospecifier protein, epithionitriles are released. However, studies on the occurrence of epithionitriles in Brassica food and knowledge about their biological effects are scarce. METHODS AND RESULTS Epithionitrile formation from glucosinolates of seven Brassica vegetables was analyzed using GC-MS and HPLC-DAD. Bioactivity of synthetic and plant-derived 1-cyano-2,3-epithiopropane (CETP) - the predominant epithionitrile in Brassica vegetables - in three human hepatocellular carcinoma (HCC) cell lines and primary murine hepatocytes was also evaluated. The majority of the Brassica vegetables were producers of nitriles or epithionitriles as hydrolysis products and not of isothiocyanates. For example, Brussels sprouts and savoy cabbage contained up to 0.8 μmol CETP/g vegetable. Using formazan dye assays, concentrations of 380-1500 nM CETP were observed to inhibit the mitochondrial dehydrogenase activity of human HCC cells without impairment of cell growth. At 100-fold higher CETP concentrations, cell death was observed. Presence of plant matrix increased CETP-based toxicity. CONCLUSION These in vitro data provide no indication that epithionitriles will severely affect human health by Brassica consumption. In contrast to isothiocyanates, no evidence of selective toxicity against HCC cells was found.
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Affiliation(s)
- Franziska S Hanschen
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V, Großbeeren, Germany
| | - Corinna Herz
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Nina Schlotz
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Franziska Kupke
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany.,Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Hamburg, Germany
| | - María M Bartolomé Rodríguez
- Clinic for Internal Medicine II, Molecular Biology, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Monika Schreiner
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V, Großbeeren, Germany
| | - Sascha Rohn
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Hamburg, Germany
| | - Evelyn Lamy
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
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Abstract
Cancer results from aberrant signaling pathways that result in uncontrolled cellular proliferation. The epidemiological studies have shown a strong inverse correlation between dietary consumption of cruciferous vegetables and incidences of cancer. Isothiocyanates (ITCs) are present in cruciferous vegetables like broccoli, cabbage, watercress, etc. and are identified as the major active constituents. Several mechanistic studies have demonstrated chemopreventive and chemotherapeutic activity of ITCs against various tumor types. ITCs exert anticancer activity by suppressing various critical hallmarks of cancer like cellular proliferation, angiogenesis, apoptosis, metastasis, etc., in vitro as well as in preclinical animal model. ITCs also generate reactive oxygen species to induce apoptosis in cancer cells. Due to promising preclinical results, few ITCs have also advanced to clinical trials. This chapter provides a candid review on the chemopreventive and chemotherapeutic activity of various major ITCs.
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Abstract
Obesity and being overweight are linked with a cluster of metabolic and vascular disorders that have been termed the metabolic syndrome. This syndrome promotes the incidence of cardiovascular diseases that are an important public health problem because they represent a major cause of death worldwide. Whereas there is not a universally-accepted set of diagnostic criteria, most expert groups agree that this syndrome is defined by an endothelial dysfunction, an impaired insulin sensitivity and hyperglycemia, dyslipidemia, abdominal obesity and hypertension. Epidemiological studies suggest that the beneficial cardiovascular health effects of diets rich in green tea are, in part, mediated by their flavonoid content, with particular benefits provided by members of this family such as epigallocatechin gallate (EGCG). Although their bioavailability is discussed, various studies suggest that EGCG modulates cellular and molecular mechanisms of various symptoms leading to metabolic syndrome. Therefore, according to in vitro and in vivo model data, this review attempts to increase our understanding about the beneficial properties of EGCG to prevent metabolic syndrome.
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Forster T, Rausch V, Zhang Y, Isayev O, Heilmann K, Schoensiegel F, Liu L, Nessling M, Richter K, Labsch S, Nwaeburu CC, Mattern J, Gladkich J, Giese N, Werner J, Schemmer P, Gross W, Gebhard MM, Gerhauser C, Schaefer M, Herr I. Sulforaphane counteracts aggressiveness of pancreatic cancer driven by dysregulated Cx43-mediated gap junctional intercellular communication. Oncotarget 2015; 5:1621-34. [PMID: 24742583 PMCID: PMC4039235 DOI: 10.18632/oncotarget.1764] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The extreme aggressiveness of pancreatic ductal adenocarcinoma (PDA) has been
associated with blocked gap junctional intercellular communication (GJIC) and the
presence of cancer stem cells (CSCs). We examined whether disturbed GJIC is
responsible for a CSC phenotype in established and primary cancer cells and patient
tissue of PDA using interdisciplinary methods based in physiology, cell and molecular
biology, histology and epigenetics. Flux of fluorescent dyes and gemcitabine through
gap junctions (GJs) was intact in less aggressive cells but not in highly malignant
cells with morphological dysfunctional GJs. Among several connexins, only Cx43 was
expressed on the cell surface of less aggressive and GJIC-competent cells, whereas
Cx43 surface expression was absent in highly malignant, E-cadherin-negative and
GJIC-incompetent cells. The levels of total Cx43 protein and Cx43 phosphorylated at
Ser368 and Ser279/282 were high in normal tissue but low to absent in malignant
tissue. si-RNA-mediated inhibition of Cx43 expression in GJIC-competent cells
prevented GJIC and induced colony formation and the expression of stem cell-related
factors. The bioactive substance sulforaphane enhanced Cx43 and E-cadherin levels,
inhibited the CSC markers c-Met and CD133, improved the functional morphology of GJs
and enhanced GJIC. Sulforaphane altered the phosphorylation of several kinases and
their substrates and inhibition of GSK3, JNK and PKC prevented sulforaphane-induced
CX43 expression. The sulforaphane-mediated expression of Cx43 was not correlated with
enhanced Cx43 RNA expression, acetylated histone binding and Cx43 promoter
de-methylation, suggesting that posttranslational phosphorylation is the dominant
regulatory mechanism. Together, the absence of Cx43 prevents GJIC and enhances
aggressiveness, whereas sulforaphane counteracts this process, and our findings
highlight dietary co-treatment as a viable treatment option for PDA.
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Affiliation(s)
- Tobias Forster
- General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
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Basse C, Arock M. The increasing roles of epigenetics in breast cancer: Implications for pathogenicity, biomarkers, prevention and treatment. Int J Cancer 2014; 137:2785-94. [PMID: 25410431 DOI: 10.1002/ijc.29347] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 11/14/2014] [Indexed: 12/14/2022]
Abstract
Nowadays, the mechanisms governing the occurrence of cancer are thought to be the consequence not only of genetic defects but also of epigenetic modifications. Therefore, epigenetic has become a very attractive and increasingly investigated field of research in order to find new ways of prevention and treatment of neoplasia, and this is particularly the case for breast cancer (BC). Thus, this review will first develop the main known epigenetic modifications that can occur in cancer and then expose the future role that control of epigenetic modifications might play in prevention, prognostication, follow-up and treatment of BC. Indeed, epigenetic biomarkers found in peripheral blood might become new tools to detect BC, to define its prognostic and to predict its outcome, whereas epi-drugs might have an increasing potential of development in the next future. However, if DNA methyltransferase inhibitors and histone desacetylase inhibitors have shown encouraging results in BC, their action remains nonspecific. Thus, additional clinical studies are needed to evaluate more precisely the effects of these molecules, even if they have provided encouraging results in cotreatment and combined therapies. This review will also deal with the potential of RNA interference (RNAi) as epi-drugs. Finally, we will focus on the potential prevention of BC through epigenetic based on diet and we will particularly develop the possible place of isothiocyanates from cruciferous vegetables or of Genistein from soybean in a dietary program that might potentially reduce the risk of BC in large populations.
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Affiliation(s)
- Clémence Basse
- Medical Oncology Unit, Anticancer Center Henri Becquerel, Rouen, France
| | - Michel Arock
- Molecular Oncology and Pharmacology, LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France
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Hanschen FS, Lamy E, Schreiner M, Rohn S. Reactivity and stability of glucosinolates and their breakdown products in foods. Angew Chem Int Ed Engl 2014; 53:11430-50. [PMID: 25163974 DOI: 10.1002/anie.201402639] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Indexed: 12/25/2022]
Abstract
The chemistry of glucosinolates and their behavior during food processing is very complex. Their instability leads to the formation of a bunch of breakdown and reaction products that are very often reactive themselves. Although excessive consumption of cabbage varieties has been thought for long time to have adverse, especially goitrogenic effects, nowadays, epidemiologic studies provide data that there might be beneficial health effects as well. Especially Brassica vegetables, such as broccoli, radish, or cabbage, are rich in these interesting plant metabolites. However, information on the bioactivity of glucosinolates is only valuable when one knows which compounds are formed during processing and subsequent consumption. This review provides a comprehensive, in-depth overview on the chemical reactivity of different glucosinolates and breakdown products thereof during food preparation.
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Affiliation(s)
- Franziska S Hanschen
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V. Theodor-Echtermeyer-Weg 1, 14979 Großbeeren (Germany) http://www.igzev.de.
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Hanschen FS, Lamy E, Schreiner M, Rohn S. Reaktivität und Stabilität von Glucosinolaten und ihren Abbauprodukten in Lebensmitteln. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402639] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gupta P, Wright SE, Kim SH, Srivastava SK. Phenethyl isothiocyanate: a comprehensive review of anti-cancer mechanisms. Biochim Biophys Acta Rev Cancer 2014; 1846:405-24. [PMID: 25152445 DOI: 10.1016/j.bbcan.2014.08.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/11/2014] [Accepted: 08/13/2014] [Indexed: 01/22/2023]
Abstract
The epidemiological evidence suggests a strong inverse relationship between dietary intake of cruciferous vegetables and the incidence of cancer. Among other constituents of cruciferous vegetables, isothiocyanates (ITC) are the main bioactive chemicals present. Phenethyl isothiocyanate (PEITC) is present as gluconasturtiin in many cruciferous vegetables with remarkable anti-cancer effects. PEITC is known to not only prevent the initiation phase of carcinogenesis process but also to inhibit the progression of tumorigenesis. PEITC targets multiple proteins to suppress various cancer-promoting mechanisms such as cell proliferation, progression and metastasis. Pre-clinical evidence suggests that combination of PEITC with conventional anti-cancer agents is also highly effective in improving overall efficacy. Based on accumulating evidence, PEITC appears to be a promising agent for cancer therapy and is already under clinical trials for leukemia and lung cancer. This is the first review which provides a comprehensive analysis of known targets and mechanisms along with a critical evaluation of PEITC as a future anti-cancer agent.
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Affiliation(s)
- Parul Gupta
- Department of Biomedical Sciences and Cancer Biology Center, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Stephen E Wright
- Department of Biomedical Sciences and Cancer Biology Center, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; Department of Internal Medicine, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Sung-Hoon Kim
- Cancer Preventive Material Development Research Center, College of Korean Medicine, Department of Pathology, Kyunghee University, 1 Hoegi-dong, Dongdaemun-ku, Seoul 131-701, South Korea.
| | - Sanjay K Srivastava
- Department of Biomedical Sciences and Cancer Biology Center, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; Cancer Preventive Material Development Research Center, College of Korean Medicine, Department of Pathology, Kyunghee University, 1 Hoegi-dong, Dongdaemun-ku, Seoul 131-701, South Korea.
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Traka MH, Melchini A, Mithen RF. Sulforaphane and prostate cancer interception. Drug Discov Today 2014; 19:1488-92. [PMID: 25051139 DOI: 10.1016/j.drudis.2014.07.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 07/14/2014] [Indexed: 12/20/2022]
Abstract
Whereas much attention is focused on distinguishing newly diagnosed prostate cancers that will progress to become aggressive forms of the disease from those that will remain indolent, it is also appropriate to explore therapeutic and lifestyle interventions to reduce the risk of progression. Diets rich in broccoli have been associated with a reduction in risk of progression, which has been attributed to the compound sulforaphane. Although the mode of action of sulforaphane has been extensively studied in cell and animal models and a multiple of mechanisms that could underpin its protective effects have been proposed, recent evidence from human intervention studies suggests that sulforaphane is involved in a complex interplay between redox status and metabolism to result in a tissue environment that does not favour prostate cancer progression.
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Affiliation(s)
- Maria H Traka
- Food and Health Programme, Institute of Food Research, Norwich Research Park, Norwich, NR4 7UA, UK
| | - Antonietta Melchini
- Food and Health Programme, Institute of Food Research, Norwich Research Park, Norwich, NR4 7UA, UK
| | - Richard F Mithen
- Food and Health Programme, Institute of Food Research, Norwich Research Park, Norwich, NR4 7UA, UK.
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Appari M, Babu KR, Kaczorowski A, Gross W, Herr I. Sulforaphane, quercetin and catechins complement each other in elimination of advanced pancreatic cancer by miR-let-7 induction and K-ras inhibition. Int J Oncol 2014; 45:1391-400. [PMID: 25017900 PMCID: PMC4151818 DOI: 10.3892/ijo.2014.2539] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 06/19/2014] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDA) has the worst prognosis of all malignancies, and current therapeutic options do not target cancer stem cells (CSCs), which may be the reason for the extreme aggressiveness. The dietary agents sulforaphane and quercetin enriched e.g., in broccoli, and the main and best studied green tea catechin EGCG hold promise as anti-CSC agents in PDA. We examined the efficacy of additional catechins and the combination of these bioactive agents to stem cell features and miRNA signaling. Two established and one primary PDA cell line and non-malignant pancreatic ductal cells were used. Whereas each agent strongly inhibited colony formation, the catechins ECG and CG were more effective than EGCG. A mixture of green tea catechins (GTCs) significantly inhibited viability, migration, expression of MMP-2 and -9, ALDH1 activity, colony and spheroid formation and induced apoptosis, but the combination of GTCs with sulforaphane or quercetin was superior. Following treatment with bioactive agents, the expression of miR-let7-a was specifically induced in cancer cells but not in normal cells and it was associated with K-ras inhibition. These data demonstrate that sulforaphane, quercetin and GTC complement each other in inhibition of PDA progression by induction of miR-let7-a and inhibition of K-ras.
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Affiliation(s)
- Mahesh Appari
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kamesh R Babu
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, University of Heidelberg, Heidelberg, Germany
| | - Adam Kaczorowski
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Wolfgang Gross
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ingrid Herr
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
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Noah TL, Zhang H, Zhou H, Glista-Baker E, Müller L, Bauer RN, Meyer M, Murphy PC, Jones S, Letang B, Robinette C, Jaspers I. Effect of broccoli sprouts on nasal response to live attenuated influenza virus in smokers: a randomized, double-blind study. PLoS One 2014; 9:e98671. [PMID: 24910991 PMCID: PMC4049587 DOI: 10.1371/journal.pone.0098671] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 04/30/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Smokers have increased susceptibility and altered innate host defense responses to influenza virus infection. Broccoli sprouts are a source of the Nrf2 activating agentsulforaphane, and short term ingestion of broccoli sprout homogenates (BSH) has been shown to reduce nasal inflammatory responses to oxidant pollutants. OBJECTIVES Assess the effects of BSH on nasal cytokines, virus replication, and Nrf2-dependent enzyme expression in smokers and nonsmokers. METHODS We conducted a randomized, double-blind, placebo-controlled trial comparing the effects of BSH on serially sampled nasal lavage fluid (NLF) cytokines, viral sequence quantity, and Nrf2-dependent enzyme expression in NLF cells and biopsied epithelium. Healthy young adult smokers and nonsmokers ingested BSH or placebo (alfalfa sprout homogenate) for 4 days, designated Days -1, 0, 1, 2. On Day 0 they received standard vaccine dose of live attenuated influenza virus (LAIV) intranasally. Nasal lavage fluids and nasal biopsies were collected serially to assess response to LAIV. RESULTS In area under curve analyses, post-LAIV IL-6 responses (P = 0.03) and influenza sequences (P = 0.01) were significantly reduced in NLF from BSH-treated smokers, while NAD(P)H quinoneoxidoreductasein NLF cells was significantly increased. In nonsmokers, a similar trend for reduction in virus quantity with BSH did not reach statistical significance. CONCLUSIONS In smokers, short term ingestion of broccoli sprout homogenates appears to significantly reduce some virus-induced markers of inflammation, as well as reducing virus quantity. Nutritional antioxidant interventions have promise as a safe, low-cost strategy for reducing influenza risk among smokers and other at risk populations. TRIAL REGISTRATION ClinicalTrials.gov NCT01269723.
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Affiliation(s)
- Terry L. Noah
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- * E-mail:
| | - Hongtao Zhang
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Haibo Zhou
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ellen Glista-Baker
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Loretta Müller
- University Children's Hospital Basel, Basel, Switzerland
| | - Rebecca N. Bauer
- Curriculum in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Megan Meyer
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Paula C. Murphy
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Shannon Jones
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Blanche Letang
- Biological and Biomedical Sciences Program, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Carole Robinette
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ilona Jaspers
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
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Abstract
Rheumatic disease is a large spectrum of heterogeneous conditions affecting the loco-motor system including joints, muscles, connective tissues, and soft tissues around the joints and bones. Many rheumatic diseases have an element of autoimmunity including systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Aberrant epigenetic regulation of gene expression is emerging as a major factor within rheumatic disease, and indicates potential new therapeutic avenues of approach to these debilitating conditions. Understanding the precise role of epigenetics in the development and treatment of rheumatic diseases particularly those which have an associated autoimmune element may be important for the long-term management of such conditions.
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Elbarbry F, Vermehren-Schmaedick A, Balkowiec A. Modulation of arachidonic Acid metabolism in the rat kidney by sulforaphane: implications for regulation of blood pressure. ISRN PHARMACOLOGY 2014; 2014:683508. [PMID: 24734194 PMCID: PMC3964756 DOI: 10.1155/2014/683508] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 02/09/2014] [Indexed: 06/03/2023]
Abstract
Background. We investigated the effects of sulforaphane (SF), the main active isothiocyanate in cruciferous vegetables, on arachidonic acid (AA) metabolism in the kidney and its effect on arterial blood pressure, using spontaneously hypertensive rats (SHR) as models. Methods. Rats were treated for 8 weeks with either drinking water alone (control) or SF (20 or 40 mg/kg) added to drinking water. Mean arterial pressure (MAP) was measured at 7-day intervals throughout the study. At the end of treatment rats were euthanized, and kidneys were harvested to prepare microsomes and measure enzymes involved in regulation of vasoactive metabolites: CYP4A, the key enzyme in the formation of 20-hydroxyeicosatetraenoic acid, and the soluble epoxide hydrolase, which is responsible for the degradation of the vasodilator metabolites such as epoxyeicosatetraenoic acids. Effect of SF on kidney expression of CYP4A was investigated by immunoblotting. Results. We found that treatment with SF leads to significant reductions in both, the expression and activity of renal CYP4A isozymes, as well as the activity of soluble epoxide hydrolase (sEH). Consistent with these data, we have found that treatment with SF resisted the progressive rise in MAP in the developing SHR in a dose-dependent manner. Conclusion. This is the first demonstration that SF modulates the metabolism of AA by both P450 enzymes and sEH in SHR rats. This may represent a novel mechanism by which SF protects SHR rats against the progressive rise in blood pressure.
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Affiliation(s)
- Fawzy Elbarbry
- School of Pharmacy, Pacific University Oregon, 222 SE 8th Avenue, Hillsboro, OR 97123, USA
| | - Anke Vermehren-Schmaedick
- Department of Integrative Biosciences, Oregon Health & Science University, Portland, OR 97239, USA
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR 97239, USA
| | - Agnieszka Balkowiec
- Department of Integrative Biosciences, Oregon Health & Science University, Portland, OR 97239, USA
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Gupta P, Kim B, Kim SH, Srivastava SK. Molecular targets of isothiocyanates in cancer: recent advances. Mol Nutr Food Res 2014; 58:1685-707. [PMID: 24510468 DOI: 10.1002/mnfr.201300684] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/16/2013] [Accepted: 12/17/2013] [Indexed: 12/14/2022]
Abstract
Cancer is a multistep process resulting in uncontrolled cell division. It results from aberrant signaling pathways that lead to uninhibited cell division and growth. Various recent epidemiological studies have indicated that consumption of cruciferous vegetables, such as garden cress, broccoli, etc., reduces the risk of cancer. Isothiocyanates (ITCs) have been identified as major active constituents of cruciferous vegetables. ITCs occur in plants as glucosinolate and can readily be derived by hydrolysis. Numerous mechanistic studies have demonstrated the anticancer effects of ITCs in various cancer types. ITCs suppress tumor growth by generating reactive oxygen species or by inducing cycle arrest leading to apoptosis. Based on the exciting outcomes of preclinical studies, few ITCs have advanced to the clinical phase. Available data from preclinical as well as available clinical studies suggest ITCs to be one of the promising anticancer agents available from natural sources. This is an up-to-date exhaustive review on the preventive and therapeutic effects of ITCs in cancer.
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Affiliation(s)
- Parul Gupta
- Department of Biomedical Sciences and Cancer Biology Center, Texas Tech University Health Sciences Center, Amarillo, TX, USA
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