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Bigelsen S. Evidence-based complementary treatment of pancreatic cancer: a review of adjunct therapies including paricalcitol, hydroxychloroquine, intravenous vitamin C, statins, metformin, curcumin, and aspirin. Cancer Manag Res 2018; 10:2003-2018. [PMID: 30034255 PMCID: PMC6049054 DOI: 10.2147/cmar.s161824] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Despite new and exciting research and renewed optimism about future therapy, current statistics of survival from pancreatic cancer remains dismal. Patients seeking alternative or complementary treatments should be warned to avoid the hype and instead look to real science. A variety of relatively safe and inexpensive treatment options that have shown success in preclinical models and/or retrospective studies are currently available. Patients require their physicians to provide therapeutic guidance and assistance in obtaining and administrating these various therapies. Paricalcitol, an analog of vitamin D, has been shown by researchers at the Salk Institute for Biological Studies to break though the protective stroma surrounding tumor cells. Hydroxychloroquine has been shown to inhibit autophagy, a process by which dying cells recycle injured organelles and internal toxins to generate needed energy for survival and reproduction. Intravenous vitamin C creates a toxic accumulation of hydrogen peroxide within cancer cells, hastening their death. Metformin inhibits mitochondrial oxidative metabolism utilized by cancer stem cells. Statins inhibit not only cholesterol but also other factors in the same pathway that affect cancer cell growth, protein synthesis, and cell cycle progression. A novel formulation of curcumin may prevent resistance to chemotherapy and inhibit pancreatic cancer cell proliferation. Aspirin therapy has been shown to prevent pancreatic cancer and may be useful to prevent recurrence. These therapies are all currently available and are reviewed in this paper with emphasis on the most recent laboratory research and clinical studies.
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Affiliation(s)
- Stephen Bigelsen
- Department of Allergy, Asthma and Immunology, Rutgers New Jersey Medical School, Newark, NJ, USA,
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52
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Vissers MCM, Das AB. Potential Mechanisms of Action for Vitamin C in Cancer: Reviewing the Evidence. Front Physiol 2018; 9:809. [PMID: 30018566 PMCID: PMC6037948 DOI: 10.3389/fphys.2018.00809] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/08/2018] [Indexed: 12/12/2022] Open
Abstract
Whether vitamin C (ascorbate) has a role to play as an anti-cancer agent has been debated for decades. Ascorbate has been used by cancer patients in an unregulated environment, either as a dietary supplement or in pharmacological doses administered by infusion, with numerous reports of clinical benefit, but in the absence of rigorous clinical trial data. The design of appropriate clinical trials has been hindered by a lack of understanding of the mechanism(s) of action that would inform the choice of effective dose, timing of administration and likely responsive cancer models. More recently, expanded understanding of the biological activities of ascorbate has led to a number of plausible hypotheses for mechanisms of anti-cancer activity. Prominent among these are the generation of significant quantities of hydrogen peroxide by the autoxidation of supra-physiological concentrations of ascorbate and stimulation of the 2-oxoglutarate-dependent dioxygenase family of enzymes (2-OGDDs) that have a cofactor requirement for ascorbate. Hydrogen peroxide generation is postulated to generate oxidative stress that preferentially targets cancer cells. The 2-OGDDs include the hydroxylases that regulate the hypoxic response, a major driver of tumor survival, angiogenesis, stem cell phenotype and metastasis, and the epigenetic histone and DNA demethylases. The latter are of particular interest, with recent studies suggesting a promising role for ascorbate in the regulation of the ten-eleven translocase (TET) DNA demethylases in hematological cancers. Support for these proposed mechanisms has come from many in vitro studies, and xenograft animal models have consistently shown an anti-cancer effect of ascorbate administration. However, decisive evidence for any particular mechanism(s) of action is not yet available from an in vivo setting. With a number of early phase clinical trials currently underway, evidence for potential mechanism(s) of action is required to inform the most appropriate study design and choice of cancer model. Hopefully such information will result in sound clinical data that will avert adding any further controversy to this already contentious debate.
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Affiliation(s)
- Margreet C M Vissers
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, Christchurch, New Zealand
| | - Andrew B Das
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, Christchurch, New Zealand
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Hansra DM, McIntyre K, Ramdial J, Sacks S, Patrick CS, Cutler J, McIntyre B, Feister K, Miller M, Taylor AK, Farooq F, de Mayolo JA, Ahn E. Evaluation of How Integrative Oncology Services Are Valued between Hematology/Oncology Patients and Hematologists/Oncologists at a Tertiary Care Center. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:8081018. [PMID: 29849727 PMCID: PMC5925032 DOI: 10.1155/2018/8081018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/28/2017] [Accepted: 01/04/2018] [Indexed: 11/20/2022]
Abstract
Evidence regarding opinions on integrative modalities by patients and physicians is lacking. Methods. A survey study was conducted assessing how integrative modalities were valued among hematology/oncology patients and hematologists and oncologists at a major tertiary medical center. Results. 1008 patients and 55 physicians were surveyed. With the exception of support groups, patients valued nutrition services, exercise therapy, spiritual/religious counseling, supplement/herbal advice, support groups, music therapy, and other complimentary medicine services significantly more than physicians (P ≤ 0.05). Conclusion. With the exception of support groups, patients value integrative modalities more than physicians. Perhaps with increasing education, awareness, and acceptance by providers and traditional institutions, integrative modalities could be equally valued between patients and providers. It is possible that increased availability and utilization of integrative oncology modalities at tertiary hospital sites could improve patient satisfaction, quality of life, and other clinical endpoints.
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Affiliation(s)
- D. M. Hansra
- Cancer Treatment Centers of America, Atlanta, GA, USA
- Jackson Memorial Hospital, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | - K. McIntyre
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - J. Ramdial
- Jackson Memorial Hospital, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | - S. Sacks
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - C. S. Patrick
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - J. Cutler
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - B. McIntyre
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - K. Feister
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - M. Miller
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - A. K. Taylor
- Miller School of Medicine, University of Miami, Miami, FL, USA
| | - F. Farooq
- Jackson Memorial Hospital, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | | | - E. Ahn
- Cancer Treatment Centers of America, Atlanta, GA, USA
- Sylvester Comprehensive Cancer Center, Miami, FL, USA
- Miller School of Medicine, University of Miami, Miami, FL, USA
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55
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Vitamin C promotes apoptosis in breast cancer cells by increasing TRAIL expression. Sci Rep 2018; 8:5306. [PMID: 29593282 PMCID: PMC5871772 DOI: 10.1038/s41598-018-23714-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/19/2018] [Indexed: 12/20/2022] Open
Abstract
Genomic loss of 5-hydroxymethylcytosine (5hmC) accompanies malignant cellular transformation in breast cancer. Vitamin C serves as a cofactor for TET methylcytosine dioxygenases to increase 5hmC generation. Here we show that the transcription of SVCT2, a major vitamin C transporter, was decreased in human breast cancers (113 cases) compared to normal breast tissues from the same patients. A decreased SVCT2 expression was also observed in breast cancer cell lines. Treatment with vitamin C (100 μM) increased the 5hmC content in MDA-MB-231 breast cancer cells and markedly altered the transcriptome. The vitamin C treatment induced apoptosis in MDA-MB-231 cells, which was verified in two additional breast cancer cell lines. This pro-apoptotic effect of vitamin C appeared to be mediated by TRAIL, a known apoptosis inducer. Vitamin C upregulated TRAIL transcripts (2.3-fold increase) and increased TRAIL protein levels. The upregulation of TRAIL by vitamin C was largely abolished by siRNAs targeting TETs and anti-TRAIL antibody abrogated the induction of apoptosis. Furthermore, the apoptosis promoted by vitamin C was associated with Bax and caspases activation, Bcl-xL sequestration, and cytochrome c release. Taken together, these results suggest a potential role of physiological doses of vitamin C in breast cancer prevention and treatment.
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56
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Lai CW, Chen HL, Tu MY, Lin WY, Röhrig T, Yang SH, Lan YW, Chong KY, Chen CM. A novel osteoporosis model with ascorbic acid deficiency in Akr1A1 gene knockout mice. Oncotarget 2018; 8:7357-7369. [PMID: 28060768 PMCID: PMC5352327 DOI: 10.18632/oncotarget.14458] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 12/07/2016] [Indexed: 12/26/2022] Open
Abstract
The AKR1A1 protein is a member of the aldo-keto reductase superfamily that is responsible for the conversion of D-glucuronate to L-gulonate in the ascorbic acid (vitamin C) synthesis pathway. In a pCAG-eGFP transgenic mouse line that was produced by pronuclear microinjection, the integration of the transgene resulted in a 30-kb genomic DNA deletion, including the Akr1A1 gene, and thus caused the knockout (KO) of the Akr1A1 gene and targeting of the eGFP gene. The Akr1A1 KO mice (Akr1A1eGFP/eGFP) exhibited insufficient serum ascorbic acid levels, abnormal bone development and osteoporosis. Using micro-CT analysis, the results showed that the microarchitecture of the 12-week-old Akr1A1eGFP/eGFP mouse femur was shorter in length and exhibited less cortical bone thickness, enlargement of the bone marrow cavity and a complete loss of the trabecular bone in the distal femur. The femoral head and neck of the proximal femur also showed a severe loss of bone mass. Based on the decreased levels of serum osteocalcin and osteoblast activity in the Akr1A1eGFP/eGFP mice, the osteoporosis might be caused by impaired bone formation. In addition, administration of ascorbic acid to the Akr1A1eGFP/eGFP mice significantly prevented the condition of osteoporotic femurs and increased bone formation. Therefore, through ascorbic acid administration, the Akr1A1 KO mice exhibited controllable osteoporosis and may serve as a novel model for osteoporotic research.
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Affiliation(s)
- Cheng-Wei Lai
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Hsiao-Ling Chen
- Department of Bioresources, Da-Yeh University, Changhua, Taiwan
| | - Min-Yu Tu
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Orthopaedic Surgery, Taichung Armed Forces General Hospital, Taichung, Taiwan and National Defense Medical Center, Taipei, Taiwan.,Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan
| | - Wei-Yu Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Theresa Röhrig
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Shang-Hsun Yang
- Department of Physiology and Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Ying-Wei Lan
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Kowit-Yu Chong
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Tao-Yuan, Taiwan
| | - Chuan-Mu Chen
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Rong-Hsing Translational Medicine Center, and iEGG Center, National Chung Hsing University, Taichung, Taiwan
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57
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Ferreira IB, Marinho EDC, Custódio IDD, Gontijo CA, Paiva CE, Crispim CA, Maia YCDP. Food intake and the nutritional status of women undergoing chemotherapy. CIENCIA & SAUDE COLETIVA 2018; 21:2209-18. [PMID: 27383354 DOI: 10.1590/1413-81232015217.05412015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/24/2015] [Indexed: 11/22/2022] Open
Abstract
The objective behind this study was the analysis of food intake and the nutritional status of women with breast cancer (BC) undergoing chemotherapy (CT). The quantitative dietary evaluation was performed in accordance with Dietary Reference Intakes (DRI), whereas the qualitative evaluation was performed through the Brazilian Healthy Eating Index - Revised (BHEI-R).From among the total number of patients (n = 20), 60% (n = 12) presented waist circumference, equal to or higher than 88cm. It was noted that 75% (n = 15) individuals were overweight. The average intake for calcium, copper, iron, dietary fiber, magnesium, potassium, vitamin A, niacin, vitamin B6 and zinc, were found to be below adequate intake levels, while the intake of vitamin C, phosphorus, manganese, sodium and thiamine were all found to be above DRIs recommendations. As for the analysis of the BHEI-R, 80% (n = 16) of the patients presented a "diet that needs modifications", while 20% (n = 4) presented a "healthy diet". Noted from these observations was the presence of a high overweight rate, a discrepancy in the intake of micronutrients and a diet that needed improvements. In this manner, the establishment and use of a nutritional intervention protocol are very important when it comes to the improvement of the diet in patients with BC and who are undergoing CT.
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Affiliation(s)
- Isabela Borges Ferreira
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
| | - Eduarda da Costa Marinho
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
| | - Isis Danyelle Dias Custódio
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
| | - Cristiana Araújo Gontijo
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
| | - Carlos Eduardo Paiva
- Departamento de Oncologia Clínica, Hospital de Câncer de Barretos. Barretos SP Brasil
| | - Cibele Aparecida Crispim
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
| | - Yara Cristina de Paiva Maia
- Curso de Nutrição, Universidade Federal de Uberlândia. Av. Pará 1720, Campus Umuarama. 38405-320 Uberlândia MG Brasil.
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58
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Sunil Kumar BV, Singh S, Verma R. Anticancer potential of dietary vitamin D and ascorbic acid: A review. Crit Rev Food Sci Nutr 2018; 57:2623-2635. [PMID: 26479551 DOI: 10.1080/10408398.2015.1064086] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cancers have been the leading cause of death worldwide and poor diet and physical inactivity are major risk factors in cancer-related deaths. Micronutrients such as vitamins and minerals appear to have preventive properties against cancer. One important mechanism by which dietary changes can exert preventive effects on cancer is via the modulation of micronutrient concentrations in target tissues. Many of these micronutrients are available in the form of dietary supplements, and the intake of these supplements is prevalent in various parts of the world. However, in most cases, it is not known which micronutrient (or combination of micronutrients) is best when it comes to lowering the risk of cancer. The present review illustrates the effect of vitamin D and ascorbic acid intake on preventing cancer.
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Affiliation(s)
- B V Sunil Kumar
- a School of Animal Biotechnology , Guru Angad Dev Veterinary and Animal Sciences University , Ludhiana , India
| | - Satparkash Singh
- a School of Animal Biotechnology , Guru Angad Dev Veterinary and Animal Sciences University , Ludhiana , India
| | - Ramneek Verma
- a School of Animal Biotechnology , Guru Angad Dev Veterinary and Animal Sciences University , Ludhiana , India
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59
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Idelchik MDPS, Begley U, Begley TJ, Melendez JA. Mitochondrial ROS control of cancer. Semin Cancer Biol 2017; 47:57-66. [PMID: 28445781 PMCID: PMC5653465 DOI: 10.1016/j.semcancer.2017.04.005] [Citation(s) in RCA: 198] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 04/07/2017] [Accepted: 04/14/2017] [Indexed: 02/06/2023]
Abstract
Mitochondria serves a primary role in energy maintenance but also function to govern levels of mitochondria-derived reactive oxygen species (mROS). ROS have long been established to play a critical role in tumorigenesis and are now considered to be integral to the regulation of diverse signaling networks that drive proliferation, tumor cell survival and malignant progression. mROS can damage DNA, activate oncogenes, block the function of tumor suppressors and drive migratory signaling. The mitochondrion's oxidant scavenging systems including SOD2, Grx2, GPrx, Trx and TrxR are key of the cellular redox tone. These mitochondrial antioxidant systems serve to tightly control the levels of the primary ROS signaling species, H2O2. The coordinated control of mROS levels is also coupled to the activity of the primary H2O2 consuming enzymes of the mitochondria which are reliant on the epitranscriptomic control of selenocysteine incorporation. This review highlights the interplay between these many oncogenic signaling networks, mROS and the H2O2 emitting and consuming capacity of the mitochondria.
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Affiliation(s)
- María Del Pilar Sosa Idelchik
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Road, NFE-4313, Albany, NY 12203, United States
| | - Ulrike Begley
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Road, NFE-4313, Albany, NY 12203, United States
| | - Thomas J Begley
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Road, NFE-4313, Albany, NY 12203, United States
| | - J Andrés Melendez
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, 257 Fuller Road, NFE-4313, Albany, NY 12203, United States.
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60
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Hamer J, Warner E. Lifestyle modifications for patients with breast cancer to improve prognosis and optimize overall health. CMAJ 2017; 189:E268-E274. [PMID: 28246240 DOI: 10.1503/cmaj.160464] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Julia Hamer
- Division of Medical Oncology and Hematology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Ellen Warner
- Division of Medical Oncology and Hematology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ont.
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61
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Bonuccelli G, De Francesco EM, de Boer R, Tanowitz HB, Lisanti MP. NADH autofluorescence, a new metabolic biomarker for cancer stem cells: Identification of Vitamin C and CAPE as natural products targeting "stemness". Oncotarget 2017; 8:20667-20678. [PMID: 28223550 PMCID: PMC5400535 DOI: 10.18632/oncotarget.15400] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 01/25/2017] [Indexed: 02/06/2023] Open
Abstract
Here, we assembled a broad molecular “tool-kit” to interrogate the role of metabolic heterogeneity in the propagation of cancer stem-like cells (CSCs). First, we subjected MCF7 cells to “metabolic fractionation” by flow cytometry, using fluorescent mitochondrial probes to detect PCG1α activity, as well ROS and hydrogen-peroxide (H2O2) production; NADH levels were also monitored by auto-fluorescence. Then, the various cell populations were functionally assessed for “stem cell activity”, using the mammosphere assay (3D-spheroids). Our results indicate that a sub-population of MCF7 cells, with increased PGC1α activity, high mitochondrial ROS/H2O2 production and high NADH levels, all form mammospheres with a higher efficiency. Thus, it appears that mitochondrial oxidative stress and the anti-oxidant response both contribute to the promotion of mitochondrial biogenesis and oxidative metabolism in CSCs. Further validation was provided by using specific inhibitors to target metabolic processes (the NAD+ salvage pathway, glycolysis, mitochondrial protein synthesis and OXPHOS), significantly reducing CSC propagation. As a consequence, we have now identified a variety of clinically-approved drugs (stiripentol), natural products (caffeic acid phenyl ester (CAPE), ascorbic acid, silibinin) and experimental pharmaceuticals (actinonin, FK866, 2-DG), that can be used to effectively inhibit CSC activity. We discuss the use of CAPE (derived from honey-bee propolis) and Vitamin C, as potential natural therapeutic modalities. In this context, Vitamin C was ∼10 times more potent than 2-DG for the targeting of CSCs. Similarly, stiripentol was between 50 to 100 times more potent than 2-DG.
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Affiliation(s)
- Gloria Bonuccelli
- The Paterson Building, University of Manchester, Withington, M20 4BX, United Kingdom
| | - Ernestina Marianna De Francesco
- The Paterson Building, University of Manchester, Withington, M20 4BX, United Kingdom.,Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, 87036, Italy
| | - Rianne de Boer
- The Paterson Building, University of Manchester, Withington, M20 4BX, United Kingdom
| | - Herbert B Tanowitz
- Departments of Pathology and Medicine, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Michael P Lisanti
- Translational Medicine, School of Environment and Life Sciences, Biomedical Research Centre, University of Salford, Greater Manchester, M5 4WT, United Kingdom
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Phytotherapy and Nutritional Supplements on Breast Cancer. BIOMED RESEARCH INTERNATIONAL 2017; 2017:7207983. [PMID: 28845434 PMCID: PMC5563402 DOI: 10.1155/2017/7207983] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/14/2017] [Accepted: 06/18/2017] [Indexed: 02/07/2023]
Abstract
Breast cancer is the most frequent type of nonskin malignancy among women worldwide. In general, conventional cancer treatment options (i.e., surgery, radiotherapy, chemotherapy, biological therapy, and hormone therapy) are not completely effective. Recurrence and other pathologic situations are still an issue in breast cancer patients due to side effects, toxicity of drugs in normal cells, and aggressive behaviour of the tumours. From this point of view, breast cancer therapy and adjuvant methods represent a promising and challenging field for researchers. In the last few years, the use of some types of complementary medicines by women with a history of breast cancer has significantly increased such as phytotherapeutic products and nutritional supplements. Despite this, the use of such approaches in oncologic processes may be problematic and patient's health risks can arise such as interference with the efficacy of standard cancer treatment. The present review gives an overview of the most usual phytotherapeutic products and nutritional supplements with application in breast cancer patients as adjuvant approach. Regardless of the contradictory results of scientific evidence, we demonstrated the need to perform additional investigation, mainly well-designed clinical trials in order to establish correlations and allow for further validated outcomes concerning the efficacy, safety, and clinical evidence-based recommendation of these products.
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63
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Limon-Miro AT, Lopez-Teros V, Astiazaran-Garcia H. Dietary Guidelines for Breast Cancer Patients: A Critical Review. Adv Nutr 2017; 8:613-623. [PMID: 28710147 PMCID: PMC5502868 DOI: 10.3945/an.116.014423] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Current dietary guidelines for breast cancer patients (BCPs) fail to address adequate dietary intakes of macro- and micronutrients that may improve patients' nutritional status. This review includes information from the PubMed and Biomed Central databases over the last 15 y concerning dietary guidelines for BCPs and the potential impact of a personalized, nutrient-specific diet on patients' nutritional status during and after antineoplastic treatment. Results indicated that BCPs should receive a nutritional assessment immediately after diagnosis. In addition, they should be encouraged to pursue and maintain a healthy body weight [body mass index (BMI; in kg/m2) 20-24.9], preserving their lean mass and avoiding an increase in fat mass. Therefore, after nutritional status diagnosis, a conservative energy restriction of 500-1000 kcal/d could be considered in the dietary intervention when appropriate. Based on the reviewed information, we propose a personalized nutrition intervention for BCPs during and after antineoplastic treatment. Specifications in the nutritional therapy should be based on the patients' nutritional status, dietary habits, schedule, activities, and cultural preferences. BCPs' daily energy intake should be distributed as follows: <30% fat/d (mainly monounsaturated and polyunsaturated fatty acids), ∼55% carbohydrates (primarily whole foods such as oats, brown rice, and fruits), and 1.2-1.5 g protein ⋅ kg-1 ⋅ d-1 to avoid sarcopenic obesity. Findings suggest that 5-9 servings/d of fruits (∼150 g/serving) and vegetables (∼75 g/serving) should be encouraged. Garlic and cruciferous vegetables must also be part of the nutrition therapy. Adequate dietary intakes of food-based macro- and micronutrients rich in β-carotene and vitamins A, E, and C can both prevent deterioration in BCPs' nutritional status and improve their overall health and prognosis.
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Affiliation(s)
- Ana Teresa Limon-Miro
- Department of Nutrition, Research Center for Food and Development, Hermosillo, Sonora, Mexico; and
| | - Veronica Lopez-Teros
- Department of Chemical and Biological Sciences, University of Sonora, Hermosillo, Sonora, Mexico
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The association between the Index of Nutritional Quality (INQ) and breast cancer and the evaluation of nutrient intake of breast cancer patients: A case-control study. Nutrition 2017; 45:11-16. [PMID: 29129231 DOI: 10.1016/j.nut.2017.06.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 06/17/2017] [Accepted: 06/29/2017] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Breast cancer (BrCa) is the most frequently diagnosed cancer among females and second cancer after lung cancer in many societies. In Iran, the risk for BrCa is 1 in 35 and each year, 8000 new patients have been diagnosed with BrCa. Studies have shown that dietary components are implicated in the etiology of BrCa. The Index of Nutritional Quality (INQ) is a method of quantitative and qualitative analysis of single foods, meals, and diets. The aim of this study was to determine the usefulness of INQs in predicting BrCa risk. METHODS Our case-control study was conducted from March 2015 to February 2016. The study included 145 cases and 148 controls who attended the Shahid Beheshti University of Medical Sciences Cancer Research Center. INQ scores were computed based on dietary intake using a validated 168-item food frequency questionnaire. Logistic regression models were used to estimate multivariable odds ratios adjusted body mass index, education, employment, marital status, menarche age, childbirth number, smoking, menopause status, and physical activity. RESULTS Vitamins A, C, B1, B2, and B12 and selenium INQs as a continuous variable in relation to risk for BrCa showed a significant association after multivariate adjustment (odds ratio [OR]vitA, 0.41 [0.27-0.64]; ORvitC, 0.30 [0.20-0.47]; ORvitB1, 0.08 [0.04-0.17]; ORvitB2, 0.19 [0.11-0.34]; ORvitB12, 0.44 [0.31-0.61]; and ORselenium, 0.42 [0.26-0.67]). CONCLUSION Women who consumed a healthier diet including vitamin A, β-carotene, vitamin C, and folate and low-fat milk were at decreased risk for developing BrCa compared with those whose diet included more high fat and lamb meat.
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Skouroliakou M, Grosomanidis D, Massara P, Kostara C, Papandreou P, Ntountaniotis D, Xepapadakis G. Serum antioxidant capacity, biochemical profile and body composition of breast cancer survivors in a randomized Mediterranean dietary intervention study. Eur J Nutr 2017. [PMID: 28634625 DOI: 10.1007/s00394-017-1489-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE Increasing evidence suggests that Mediterranean Diet (MD) is correlated with reduced risk of breast cancer (BC) and cancer mortality, since it modifies patients' serum antioxidant capacity, body composition and biochemical parameters. The aim of the study was to investigate whether a dietary intervention based on MD has a beneficial effect on these factors. METHODS In this intervention study, seventy female BC survivors were randomly assigned to (1) the intervention group (personalized dietary intervention based on MD) and (2) the control group (received the updated American Cancer Society Guidelines on Nutrition and Physical Activity for Cancer Prevention and ad libitum diet). Both groups were assessed twice [beginning, end of study (after 6 months)] regarding their anthropometric and biochemical parameters, serum vitamin C, vitamin A, a-tocopherol and CoQ10 levels, dietary intake and adherence to MD. An additional intermediate analysis was conducted on participants' body composition and biochemical profile. RESULTS Concerning the intervention group, body weight, body fat mass, waist circumference, body mass index as well as HDL-cholesterol were significantly decreased (P < 0.2%). An increase was observed in the vitamin C levels in blood (P < 0.2%). In the control group, body weight, body fat mass and serum total cholesterol rose (P < 0.2%). At the end of the study the two groups were significantly different considering blood glucose, vitamin C, polyunsaturated fatty acids, vitamin A and a-tocopherol levels. CONCLUSIONS This randomized dietary intervention based on MD managed to ameliorate serum antioxidant capacity, body composition, adherence to MD and glycemic profile of postmenopausal BC survivors.
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Affiliation(s)
- Maria Skouroliakou
- Department of Nutrition and Dietetics, Harokopio University of Athens, Kallithea, 17671, Athens, Greece.
| | | | - P Massara
- Department of Nutrition and Dietetics, Harokopio University of Athens, Kallithea, 17671, Athens, Greece
| | - C Kostara
- "IASO" Maternity Hospital, Marousi, 15123, Athens, Greece
| | - P Papandreou
- "IASO" Maternity Hospital, Marousi, 15123, Athens, Greece
| | - D Ntountaniotis
- Department of Chemistry, National and Kapodistrian University of Athens, Zografou, 15771, Athens, Greece
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66
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Wohlrab C, Phillips E, Dachs GU. Vitamin C Transporters in Cancer: Current Understanding and Gaps in Knowledge. Front Oncol 2017; 7:74. [PMID: 28484682 PMCID: PMC5402541 DOI: 10.3389/fonc.2017.00074] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/06/2017] [Indexed: 11/14/2022] Open
Abstract
Sufficient uptake and whole body distribution of vitamin C (ascorbate) is essential for many biochemical processes, including some that are vital for tumor growth and spread. Uptake of ascorbate into cancer cells is modulated by availability, tumor blood flow, tissue diffusion parameters, and ascorbate transport proteins. Uptake into cells is mediated by two families of transport proteins, namely, the solute carrier gene family 23, consisting of sodium-dependent vitamin C transporters (SVCTs) 1 and 2, and the SLC2 family of glucose transporters (GLUTs). GLUTs transport the oxidized form of the vitamin, dehydroascorbate (DHA), which is present at negligible to low physiological levels. SVCT1 and 2 are capable of accumulating ascorbate against a concentration gradient from micromolar concentrations outside to millimolar levels inside of cells. Investigating the expression and regulation of SVCTs in cancer has only recently started to be included in studies focused on the role of ascorbate in tumor formation, progression, and response to therapy. This review gives an overview of the current, limited knowledge of ascorbate transport across membranes, as well as tissue distribution, gene expression, and the relevance of SVCTs in cancer. As tumor ascorbate accumulation may play a role in the anticancer activity of high dose ascorbate treatment, further research into ascorbate transport in cancer tissue is vital.
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Affiliation(s)
- Christina Wohlrab
- Mackenzie Cancer Research Group, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Elisabeth Phillips
- Mackenzie Cancer Research Group, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Gabi U Dachs
- Mackenzie Cancer Research Group, Department of Pathology, University of Otago, Christchurch, New Zealand
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67
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He J, Gu Y, Zhang S. Consumption of vegetables and fruits and breast cancer survival: a systematic review and meta-analysis. Sci Rep 2017; 7:599. [PMID: 28377568 PMCID: PMC5428797 DOI: 10.1038/s41598-017-00635-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 03/08/2017] [Indexed: 01/10/2023] Open
Abstract
We aimed to conduct a meta-analysis investigating the association between consumption of vegetables and fruits and breast cancer survival. A comprehensive search of the PubMed and EMBASE was performed from the inception to September 30, 2016. The summary hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using a random effects model. Ten studies, with a total of 31,210 breast cancer cases, were included in the meta-analysis. The summary HRs (95% CIs) of overall survival (highest vs. lowest) were 1.08 (0.88–1.33; I2 = 41.1%) for pre-diagnostic intake of vegetables and fruits combined, 0.96 (0.71–1.30; I2 = 48.4%) for vegetables alone, and 0.83 (0.67–1.02; I2 = 0) for fruit alone. No significant risk associations of overall survival were found for post-diagnostic intake of vegetables and fruits. Line dose-response analyses indicated the likely results for both pre- and post- diagnostic dietary intake. No significant association was found between intake of vegetables and fruits and breast cancer-specific mortality. In addition, intake of cruciferous vegetables was not associated with death from breast cancer. Our findings indicated a borderline inverse association between pre-diagnostic intake of fruit and overall survival of breast cancer, whereas intake of vegetables was not associated with survival.
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Affiliation(s)
- Juanjuan He
- Department of Breast Surgery, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yuanting Gu
- Department of Breast Surgery, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Shaojin Zhang
- Department of Urology Surgery, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan Province, China.
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68
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Fruit and vegetable intake and breast cancer prognosis: a meta-analysis of prospective cohort studies. Br J Nutr 2017; 117:737-749. [DOI: 10.1017/s0007114517000423] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AbstractThe effect of fruit and vegetable intake on breast cancer prognosis is controversial. Thus, a meta-analysis was carried out to explore their associations. A comprehensive search was conducted in PubMed, Web of Science, OVID, ProQuest and Chinese databases from inception to April 2016. The summary hazard ratios (HR) and 95 % CI were estimated using a random effects model if substantial heterogeneity existed and using a fixed effects model if not. Subgroup analyses and sensitivity analyses were also performed. In total, twelve studies comprising 41 185 participants were included in the meta-analysis. Comparing the highest with the lowest, the summary HR for all-cause mortality were 1·01 (95 % CI 0·72, 1·42) for fruits and vegetables combined, 0·96 (95 % CI 0·83, 1·12) for total vegetable intake, 0·99 (95 % CI 0·89, 1·11) for cruciferous vegetable intake and 0·88 (95 % CI 0·74, 1·05) for fruit intake; those for breast cancer-specific mortality were 1·05 (95 % CI 0·77, 1·43) for total vegetable intake and 0·94 (95 % CI 0·69, 1·26) for fruit intake; and those for breast cancer recurrence were 0·89 (95 % CI 0·53, 1·50) for total vegetable intake and 0·98 (95 % CI 0·76, 1·26) for cruciferous vegetable intake. This meta-analysis found no significant associations between fruit and vegetable intake and breast cancer prognosis.
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69
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Forcados GE, James DB, Sallau AB, Muhammad A, Mabeta P. Oxidative Stress and Carcinogenesis: Potential of Phytochemicals in Breast Cancer Therapy. Nutr Cancer 2017; 69:365-374. [PMID: 28103111 DOI: 10.1080/01635581.2017.1267777] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Breast cancer remains a burden in both developed and developing countries, with higher mortality in developing countries. Attempts to eradicate cancer have not been successful despite the progress made in the development of more novel chemotherapeutic drugs. Reactive-oxygen-species-mediated oxidative stress is known to play a role in breast cancer pathogenesis via genetic and epigenetic modifications, resulting in uncontrolled cell proliferation. Phytochemicals could provide leads for the development of alternative therapeutic agents due to their antioxidant activity, as well as their ability to induce apoptosis in cancer cells. However, most of the studies carried out using in vitro models do not continue with further studies in estrogen-receptor-positive in vivo breast cancer models, or fail to examine the possible biochemical mechanisms of phytochemical-based amelioration. This review examines oxidative-stress-mediated carcinogenesis and the potential of phytochemicals as anticancer agents.
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Affiliation(s)
- Gilead Ebiegberi Forcados
- a Division of Biochemistry , National Veterinary Research Institute , Vom , Nigeria.,b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria.,c Department of Anatomy and Physiology , Faculty of Veterinary Sciences, University of Pretoria , Pretoria , South Africa
| | - Dorcas Bolanle James
- b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria
| | | | - Aliyu Muhammad
- b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria
| | - Peace Mabeta
- c Department of Anatomy and Physiology , Faculty of Veterinary Sciences, University of Pretoria , Pretoria , South Africa
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Tsujikawa T, Asahi S, Oh M, Sato Y, Narita N, Makino A, Mori T, Kiyono Y, Tsuchida T, Kimura H, Fujieda S, Okazawa H. Assessment of the Tumor Redox Status in Head and Neck Cancer by 62Cu-ATSM PET. PLoS One 2016; 11:e0155635. [PMID: 27187778 PMCID: PMC4871355 DOI: 10.1371/journal.pone.0155635] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 05/02/2016] [Indexed: 12/23/2022] Open
Abstract
Purpose Tumor redox is an important factor for cancer progression, resistance to treatments, and a poor prognosis. The aim of the present study was to define tumor redox (over-reduction) using 62Cu-diacetyl-bis(N4-methylthiosemicarbazone) (62Cu-ATSM) PET and compare its prognostic potential in head and neck cancer (HNC) with that of 2-deoxy-2-[18F]fluoro-D-glucose (18F-FDG). Methods Thirty HNC patients (stage II–IV) underwent pretreatment 62Cu-ATSM and 18F-FDG PET scans. Maximum standardized uptake values (SUVATSM and SUVFDG) and tumor-to-muscle activity concentration ratios (TMRATSM and TMRFDG) were measured. Reductive-tumor-volume (RTV) was then determined at four thresholds (40%, 50%, 60%, and 70% SUVATSM), and total-lesion-reduction (TLR) was calculated as the product of the mean SUV and RTV for 62Cu-ATSM. In 18F-FDG, metabolic-tumor-volume (MTV) and total-lesion-glycolysis (TLG) were obtained at a threshold of 40%. A ROC analysis was performed to determine % thresholds for RTV and TLR showing the best predictive performance, and these were then used to determine the optimal cut-off values to stratify patients for each parameter. Progression-free-survival (PFS) and cause-specific-survival (CSS) were evaluated by the Kaplan-Meier method. Results The means ± standard deviations of PFS and CSS periods were 16.4±13.4 and 19.2±12.4 months, respectively. A ROC analysis determined that the 70% SUVATSM threshold for RTV and TLR was the best for predicting disease progression and cancer death. Optimal cut-offs for each index were SUVATSM = 3.6, SUVFDG = 7.9, TMRATSM = 3.2, TMRFDG = 5.6, RTV = 2.9, MTV = 8.1, TLR = 14.0, and TLG = 36.5. When the cut-offs for TMRATSM and TLR were set as described above in 62Cu-ATSM PET, patients with higher TMRATSM (p = 0.03) and greater TLR (p = 0.02) showed significantly worse PFS, while patients with greater TLR had significantly worse CSS (p = 0.02). Only MTV in 18F-FDG PET predicted differences in PSF and CSS (p = 0.03 and p = 0.03, respectively). Conclusion Tumor redox parameters measured by 62Cu-ATSM PET may be determinants of HNC patient outcomes and help define optimal patient-specific treatments.
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Affiliation(s)
- Tetsuya Tsujikawa
- Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
- * E-mail:
| | - Satoko Asahi
- Department of Radiology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Myungmi Oh
- Department of Otolaryngology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yoshitaka Sato
- Department of Radiology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Norihiko Narita
- Department of Otolaryngology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Akira Makino
- Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
| | - Tetsuya Mori
- Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
| | - Yasushi Kiyono
- Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
| | - Tatsuro Tsuchida
- Department of Radiology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Hirohiko Kimura
- Department of Radiology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Shigeharu Fujieda
- Department of Otolaryngology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Hidehiko Okazawa
- Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
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71
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Camarena V, Wang G. The epigenetic role of vitamin C in health and disease. Cell Mol Life Sci 2016; 73:1645-58. [PMID: 26846695 PMCID: PMC4805483 DOI: 10.1007/s00018-016-2145-x] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/28/2015] [Accepted: 01/21/2016] [Indexed: 12/20/2022]
Abstract
Recent advances have uncovered a previously unknown function of vitamin C in epigenetic regulation. Vitamin C exists predominantly as an ascorbate anion under physiological pH conditions. Ascorbate was discovered as a cofactor for methylcytosine dioxygenases that are responsible for DNA demethylation, and also as a likely cofactor for some JmjC domain-containing histone demethylases that catalyze histone demethylation. Variation in ascorbate bioavailability thus can influence the demethylation of both DNA and histone, further leading to different phenotypic presentations. Ascorbate deficiency can be presented systematically, spatially and temporally in different tissues at the different stages of development and aging. Here, we review how ascorbate deficiency could potentially be involved in embryonic and postnatal development, and plays a role in various diseases such as neurodegeneration and cancer through epigenetic dysregulation.
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Affiliation(s)
- Vladimir Camarena
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Biomedical Research Building, Rm. 608, 1501 NW 10th Ave, Miami, FL, 33136, USA
| | - Gaofeng Wang
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Biomedical Research Building, Rm. 608, 1501 NW 10th Ave, Miami, FL, 33136, USA.
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, 33136, USA.
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, 33136, USA.
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Abstract
Among cancers in American women, breast cancer (BC) has the second highest incidence and mortality. The association of BC with diet has been inconsistent. Studies that evaluate associations with dietary patterns are less common and reflect an individual's whole diet. We associated dietary patterns with the risk of BC in American women of the Adventist Health Study-2 (AHS-2), a prospective cohort of 96 001 subjects recruited between 2002 and 2007. Answers to a previously validated FFQ were used to classify subjects to vegan, lacto-ovo-vegetarian, pesco-vegetarian, semi-vegetarian and non-vegetarian dietary patterns. Incident BC were identified by matching AHS-2 subjects to data from forty-eight state cancer registries. Statistical analyses used proportional hazard regression analyses with covariates that were chosen a priori. From 50 404 female participants (26 193 vegetarians), we identified 892 incident BC cases, with 478 cases among vegetarians. As compared with non-vegetarians, all vegetarians combined did not have a significantly lower risk (hazard ratio (HR) 0·97; CI 0·84, 1·11; P=0·64). However, vegans showed consistently lower (but non-significant) point estimates when compared with non-vegetarians (all cases: HR 0·78; CI 0·58, 1·05; P=0·09). In summary, participants in this cohort who follow a vegetarian dietary pattern did not experience a lower risk of BC as compared with non-vegetarians, although lower risk in vegans is possible. These findings add to the very limited literature associating vegetarian diets with BC risk and can assist nutritionists when evaluating the impact of these diets. The findings will also motivate further evaluation of vegan diets and their special characteristics.
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73
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Chen AY, Lü JM, Yao Q, Chen C. Entacapone is an Antioxidant More Potent than Vitamin C and Vitamin E for Scavenging of Hypochlorous Acid and Peroxynitrite, and the Inhibition of Oxidative Stress-Induced Cell Death. Med Sci Monit 2016; 22:687-96. [PMID: 26927838 PMCID: PMC4777242 DOI: 10.12659/msm.896462] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Entacapone (ENT), a clinical drug for the treatment of Parkinson’s disease, has been shown to have antioxidant effects, but little is known about its antioxidant mechanisms. The objective of the current study was to determine the antioxidant activity of ENT against different species of oxidants and compared it with that of vitamin C and vitamin E. We also determined the effect of ENT on oxidative stress-induced cell death in human umbilical vein endothelial cells (HUVECs). Material/Methods The total antioxidant activities of ENT, vitamin C and vitamin E were determined with a standard DPPH-scavenging assay. Specific assays to determine ENT’s scavenging activity on hypochlorous acid (HOCl), peroxynitrite (ONOO−), and hydrogen peroxide (H2O2), and the chelating effect on Fe(II) were used. H2O2-induced cell death in HUVECs was determined with the MTT assay. Results ENT (10 and 20 μM) scavenged 60% and 83% of DPPH activity, respectively. These percentages were greater than those resulting from using the same concentrations of vitamin C and vitamin E. ENT’s HOCl-scavenging activity was concentration-dependent and 8 to 20 times stronger than those of vitamin C and vitamin E. ENT’s ONOO−-scavenging activity was 8% to 30% stronger than that of vitamin C. However, ENT, vitamin C, and vitamin E were not able to directly scavenge H2O2, and did not show any chelating effect on Fe(II). Importantly ENT, but not vitamin C or vitamin E, inhibited H2O2-induced cell death in HUVECs. Conclusions ENT is an antioxidant that can scavenge toxic HOCl and ONOO− species and inhibit oxidative stress-induced cell death more effectively than vitamin C and vitamin E. ENT may have new clinical applications as an antioxidant in the treatment of ROS-induced diseases including cardiovascular disease, cancer, and neurodegenerative diseases.
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Affiliation(s)
- Aaron Y Chen
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Jian-Ming Lü
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Qizhi Yao
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Changyi Chen
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
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Schmidt HHHW, Stocker R, Vollbracht C, Paulsen G, Riley D, Daiber A, Cuadrado A. Antioxidants in Translational Medicine. Antioxid Redox Signal 2015; 23:1130-43. [PMID: 26154592 PMCID: PMC4657516 DOI: 10.1089/ars.2015.6393] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SIGNIFICANCE It is generally accepted that reactive oxygen species (ROS) scavenging molecules or antioxidants exert health-promoting effects and thus their consumption as food additives and nutraceuticals has been greatly encouraged. Antioxidants may be beneficial in situations of subclinical deficiency and increased demand or acutely upon high-dose infusion. However, to date, there is little clinical evidence for the long-term benefit of most antioxidants. Alarmingly, recent evidence points even to health risks, in particular for supplements of lipophilic antioxidants. RECENT ADVANCES The biological impact of ROS depends not only on their quantities but also on their chemical nature, (sub)cellular and tissue location, and the rates of their formation and degradation. Moreover, ROS serve important physiological functions; thus, inappropriate removal of ROS may cause paradoxical reductive stress and thereby induce or promote disease. CRITICAL ISSUES Any recommendation on antioxidants must be based on solid clinical evidence and patient-relevant outcomes rather than surrogate parameters. FUTURE DIRECTIONS Such evidence-based use may include site-directed application, time-limited high dosing, (functional) pharmacological repair of oxidized biomolecules, and triggers of endogenous antioxidant response systems. Ideally, these approaches need guidance by patient stratification through predictive biomarkers and possibly imaging modalities.
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Affiliation(s)
- Harald H H W Schmidt
- 1 Department of Pharmacology, CARIM, FHML, MIAS, Maastricht University , Maastricht, The Netherlands
| | - Roland Stocker
- 2 Victor Chang Cardiac Research Institute , Sydney, Australia .,3 University of New South Wales , Sydney, Australia
| | - Claudia Vollbracht
- 4 Hochschule Fresenius, University of Applied Sciences , Idstein, Germany
| | | | - Dennis Riley
- 6 Galera Therapeutics Inc., Malvern, Pennsylvania
| | - Andreas Daiber
- 7 Labor für Molekulare Kardiologie, II. Medizinische Klinik und Poliklinik, Universitätsmedizin der Johannes Gutenberg-Universität , Mainz, Germany
| | - Antonio Cuadrado
- 8 Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED) , ISCIII, Madrid, Spain .,9 Instituto de Investigaciones Biomédicas "Alberto Sols" UAM-CSIC , Madrid, Spain .,10 Instituto de Investigación Sanitaria La Paz (IdiPaz) , Madrid, Spain .,11 Department of Biochemistry, Faculty of Medicine, Autonomous University of Madrid , Madrid, Spain
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Denlinger CS, Ligibel JA, Are M, Baker KS, Demark-Wahnefried W, Dizon D, Friedman DL, Goldman M, Jones L, King A, Ku GH, Kvale E, Langbaum TS, Leonardi-Warren K, McCabe MS, Melisko M, Montoya JG, Mooney K, Morgan MA, Moslehi JJ, O'Connor T, Overholser L, Paskett ED, Peppercorn J, Raza M, Rodriguez MA, Syrjala KL, Urba SG, Wakabayashi MT, Zee P, McMillian NR, Freedman-Cass DA. Survivorship: nutrition and weight management, Version 2.2014. Clinical practice guidelines in oncology. J Natl Compr Canc Netw 2015; 12:1396-406. [PMID: 25313179 DOI: 10.6004/jnccn.2014.0137] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Healthy lifestyle habits have been associated with improved health outcomes and quality of life and, for some cancers, a reduced risk of recurrence and death. The NCCN Guidelines for Survivorship therefore recommend that cancer survivors be encouraged to achieve and maintain a healthy lifestyle, including attention to weight management, physical activity, and dietary habits. This section of the NCCN Guidelines focuses on recommendations regarding nutrition, weight management, and supplement use in survivors. Weight management recommendations are based on the survivor's body mass index and include discussions of nutritional, weight management, and physical activity principles, with referral to community resources, dietitians, and/or weight management programs as needed.
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Steven S, Münzel T, Daiber A. Exploiting the Pleiotropic Antioxidant Effects of Established Drugs in Cardiovascular Disease. Int J Mol Sci 2015; 16:18185-223. [PMID: 26251902 PMCID: PMC4581241 DOI: 10.3390/ijms160818185] [Citation(s) in RCA: 54] [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: 06/26/2015] [Revised: 07/20/2015] [Accepted: 07/27/2015] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular disease is a leading cause of death and reduced quality of life worldwide. Arterial vessels are a primary target for endothelial dysfunction and atherosclerosis, which is accompanied or even driven by increased oxidative stress. Recent research in this field identified different sources of reactive oxygen and nitrogen species contributing to the pathogenesis of endothelial dysfunction. According to lessons from the past, improvement of endothelial function and prevention of cardiovascular disease by systemic, unspecific, oral antioxidant therapy are obviously too simplistic an approach. Source- and cell organelle-specific antioxidants as well as activators of intrinsic antioxidant defense systems might be more promising. Since basic research demonstrated the contribution of different inflammatory cells to vascular oxidative stress and clinical trials identified chronic inflammatory disorders as risk factors for cardiovascular events, atherosclerosis and cardiovascular disease are closely associated with inflammation. Therefore, modulation of the inflammatory response is a new and promising approach in the therapy of cardiovascular disease. Classical anti-inflammatory therapeutic compounds, but also established drugs with pleiotropic immunomodulatory abilities, demonstrated protective effects in various models of cardiovascular disease. However, results from ongoing clinical trials are needed to further evaluate the value of immunomodulation for the treatment of cardiovascular disease.
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Affiliation(s)
- Sebastian Steven
- Medical Clinic, University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany.
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany.
| | - Thomas Münzel
- Medical Clinic, University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany.
| | - Andreas Daiber
- Medical Clinic, University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany.
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Lopes da Silva R. Methemoglobinemia secondary to rasburicase in cancer: Non drug-related oxidative stress. J Oncol Pharm Pract 2015. [PMID: 26223797 DOI: 10.1177/1078155215597559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bai XY, Qu X, Jiang X, Xu Z, Yang Y, Su Q, Wang M, Wu H. Association between Dietary Vitamin C Intake and Risk of Prostate Cancer: A Meta-analysis Involving 103,658 Subjects. J Cancer 2015; 6:913-21. [PMID: 26284143 PMCID: PMC4532989 DOI: 10.7150/jca.12162] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/11/2015] [Indexed: 12/14/2022] Open
Abstract
We attempted to systematically determine the association between dietary intake of vitamin C and risk of prostate cancer. PubMed and Embase were searched to obtain eligible studies published before February 2015. Cohort or case-control studies that reported the relative risk (RR)/odds ratio (OR) estimates with 95% confidence intervals (CIs) for the association between vitamin C intake and prostate cancer risk were included. Eighteen studies regarding dietary vitamin C intake were finally obtained, with a total of 103,658 subjects. The pooled RR of prostate cancer for the highest versus the lowest categories of dietary vitamin C intake was 0.89 (95%CI: 0.83-0.94; p = 0.000) with evidence of a moderate heterogeneity (I(2) = 39.4%, p = 0.045). Meta-regression analysis suggested that study design accounted for a major proportion of the heterogeneity. Stratifying the overall study according to study design yielded pooled RRs of 0.92 (95%CI: 0.86-0.99, p = 0.027) among cohort studies and 0.80 (95%CI: 0.71-0.89, p = 0.000) among case-control studies, with no heterogeneity in either subgroup. In the dose-response analysis, an inverse linear relationship between dietary vitamin C intake and prostate cancer risk was established, with a 150 mg/day dietary vitamin C intake conferred RRs of 0.91 (95%CI: 0.84-0.98, p = 0.018) in the overall studies, 0.95 (95%CI: 0.90-0.99, p = 0.039) in cohort studies, and 0.79 (95%CI: 0.69-0.91, p = 0.001) in case-control studies. In conclusion, intake of vitamin C from food was inversely associated with prostate cancer risk in this meta-analysis.
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Affiliation(s)
- Xiao-Yan Bai
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Xinjian Qu
- 2. School of Life Science and Medicine, Dalian University of Technology, Panjin, China
| | - Xiao Jiang
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Zhaowei Xu
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yangyang Yang
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Qiming Su
- 2. School of Life Science and Medicine, Dalian University of Technology, Panjin, China
| | - Miao Wang
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Huijian Wu
- 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China ; 2. School of Life Science and Medicine, Dalian University of Technology, Panjin, China
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79
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CALAF GLORIAM, ZEPEDA ANDREAB, CASTILLO RODRIGOL, FIGUEROA CAROLINAA, ARIAS CONSUELO, FIGUEROA ELÍAS, FARÍAS JORGEG. Molecular aspects of breast cancer resistance to drugs (Review). Int J Oncol 2015; 47:437-45. [DOI: 10.3892/ijo.2015.3055] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 06/02/2015] [Indexed: 11/05/2022] Open
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80
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Abstract
Emerging evidence suggests that ascorbate, the dominant form of vitamin C under physiological pH conditions, influences activity of the genome via regulating epigenomic processes. Ascorbate serves as a cofactor for Ten-eleven translocation (TET) dioxygenases that catalyze the oxidation of 5-methylcytosine (5mC) into 5-hydroxymethylcytosine (5hmC), and further to 5-formylcytosine (5fC) and to 5-carboxylcytosine (5caC), which are ultimately replaced by unmodified cytosine. The Jumonji C (JmjC)-domain-containing histone demethylases also require ascorbate as a cofactor for histone demethylation. Thus, by primarily participating in the demethylation of both DNA and histones, ascorbate appears to be a mediator of the interface between the genome and environment. Furthermore, redox status has a profound impact on the bioavailability of ascorbate in the nucleus. In order to bridge the gap between redox biology and genomics, we suggest an interdisciplinary research field that can be termed redox genomics to study dynamic redox processes in health and diseases. This review examines the evidence and potential molecular mechanism of ascorbate in the demethylation of the genome, and it highlights potential epigenetic roles of ascorbate in various diseases.
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81
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Devassy JG, Nwachukwu ID, Jones PJH. Curcumin and cancer: barriers to obtaining a health claim. Nutr Rev 2015; 73:155-65. [DOI: 10.1093/nutrit/nuu064] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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82
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Ibrahim AS, Sobh MAM, Eid HM, Salem A, Elbelasi HH, El-Naggar MH, AbdelBar FM, Sheashaa H, Sobh MA, Badria FA. Gingerol-derivatives: emerging new therapy against human drug-resistant MCF-7. Tumour Biol 2014; 35:9941-8. [PMID: 25004806 DOI: 10.1007/s13277-014-2248-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 06/18/2014] [Indexed: 12/22/2022] Open
Abstract
Cancer chemotherapies have been improved dramatically over the last two decades. In the case of human breast cancer, the combination chemotherapeutic protocol, cyclophosphamide (CPA), doxorubicin (DOX), and 5-fluorouracil (5-FU) (CDF), is often used. Nevertheless, the clinical usefulness of CDF is limited by its remarkably low therapeutic window and frequent eruption of resistance. These limitations prompted our search for a more effective and safe drug candidate that may raise the therapeutic benefits for breast cancer patients. Gingerols' wide therapeutic indices as well as their high efficacy in the suppression of carcinogenesis are well established. However, no thorough study to date has profiled their antibreast cancer activities in depth. Therefore, the aims of the present study are to evaluate the antibreast cancer activities of gingerols in comparison to CDF and to gain insight into the structure activity relationships (SARs) responsible for the observed effect using a breast cancer cell model, MCF-7. Our data revealed that 6-gingerol showed the highest anticancer potency that is superior to that of CDF with IC50 = 30.4 μM. Guided by these results, semisynthetic modifications of 6-gingerol have been carried out to characterize 6-gingerol's SARs. The obtained results showed that the acquisition of free hydroxyl group in the aliphatic side chain of 6-gingerol is essential for the antibreast cancer activity. Likewise, the length of aliphatic side chain in 6-gingerol is optimum for its anticancer activity because any decrease in the side chain length resulted in a dramatic loss of anticancer activity. Additionally, allylation of phenolic group has shown antibreast cancer activity superior to that of 6-gingerol per se. Conversely, methylation or isoprenylation of phenolic group has led to a potential decrease in the anticancer activity, whereas loss of aromaticity resulted in a complete loss of 6-gingerol's cytotoxic activity. Collectively, the present results would simplify drug design to allow safer and more effective antibreast cancer pharmaceuticals to be designed.
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Affiliation(s)
- Ahmed S Ibrahim
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt,
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83
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Seoung J, Park YH, Rhim C, Kim S. Current Possible Drug Therapies for Ovarian Cancer. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/jct.2014.513122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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84
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De Francesco EM, Ózsvári B, Sotgia F, Lisanti MP. [Pollution of the environment with lead]. Front Oncol 1984; 9:615. [PMID: 31440463 PMCID: PMC6692486 DOI: 10.3389/fonc.2019.00615] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 06/21/2019] [Indexed: 12/26/2022] Open
Abstract
Elevated mitochondrial biogenesis and/or metabolism are distinguishing features of cancer cells, as well as Cancer Stem Cells (CSCs), which are involved in tumor initiation, metastatic dissemination, and therapy resistance. In fact, mitochondria-impairing agents can be used to hamper CSCs maintenance and propagation, toward better control of neoplastic disease. Tri-Phenyl-Phosphonium (TPP)-based mitochondrially-targeted compounds are small non-toxic and biologically active molecules that are delivered to and accumulated within the mitochondria of living cells. Therefore, TPP-derivatives may represent potentially “powerful” candidates to block CSCs. Here, we evaluate the metabolic and biological effects induced by the TPP-derivative, termed Dodecyl-TPP (d-TPP) on breast cancer cells. By employing the 3D mammosphere assay in MCF-7 cells, we demonstrate that treatment with d-TPP dose-dependently inhibits the propagation of breast CSCs in suspension. Also, d-TPP targets adherent “bulk” cancer cells, by decreasing MCF-7 cell viability. The analysis of metabolic flux using Seahorse Xfe96 revealed that d-TPP potently inhibits the mitochondrial oxygen consumption rate (OCR), while simultaneously shifting cell metabolism toward glycolysis. Thereafter, we exploited this ATP depletion phenotype and strict metabolic dependency on glycolysis to eradicate the residual glycolytic CSC population, by using additional metabolic stressors. More specifically, we applied a combination strategy based on treatment with d-TPP, in the presence of a selected panel of natural and synthetic compounds, some of which are FDA-approved, that are known to behave as glycolysis (Vitamin C, 2-Deoxy-Glucose) and OXPHOS (Doxycyline, Niclosamide, Berberine) inhibitors. This two-hit scheme effectively decreased CSC propagation, at concentrations of d-TPP toxic only for cancer cells, but not for normal cells, as evidenced using normal human fibroblasts (hTERT-BJ1) as a reference point. Taken together, d-TPP halts CSCs propagation and targets “bulk” cancer cells, without eliciting the relevant undesirable off-target effects in normal cells. These observations pave the way for further exploring the potential of TPP-based derivatives in cancer therapy. Moreover, TPP-based compounds should be investigated for their potential to discriminate between “normal” and “malignant” mitochondria, suggesting that distinct biochemical, and metabolic changes in these organelles could precede specific normal or pathological phenotypes. Lastly, our data validate the manipulation of the energetic machinery as useful tool to eradicate CSCs.
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85
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Romanelli R. [Congenital abnormalities of the atrioventricular ostia and the annexed valves: report of a case of an extra hole in the posterolateral cuspis of the mitral valve]. Pathologica 1969; 8:67269-67286. [PMID: 28978032 PMCID: PMC5620172 DOI: 10.18632/oncotarget.18428] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 05/17/2017] [Indexed: 01/16/2023] Open
Abstract
Here, we developed a new synthetic lethal strategy for further optimizing the eradication of cancer stem cells (CSCs). Briefly, we show that chronic treatment with the FDA-approved antibiotic Doxycycline effectively reduces cellular respiration, by targeting mitochondrial protein translation. The expression of four mitochondrial DNA encoded proteins (MT-ND3, MT-CO2, MT-ATP6 and MT-ATP8) is suppressed, by up to 35-fold. This high selection pressure metabolically synchronizes the surviving cancer cell sub-population towards a predominantly glycolytic phenotype, resulting in metabolic inflexibility. We directly validated this Doxycycline-induced glycolytic phenotype, by using metabolic flux analysis and label-free unbiased proteomics. Next, we identified two natural products (Vitamin C and Berberine) and six clinically-approved drugs, for metabolically targeting the Doxycycline-resistant CSC population (Atovaquone, Irinotecan, Sorafenib, Niclosamide, Chloroquine, and Stiripentol). This new combination strategy allows for the more efficacious eradication of CSCs with Doxycycline, and provides a simple pragmatic solution to the possible development of Doxycycline-resistance in cancer cells. In summary, we propose the combined use of i) Doxycycline (Hit-1: targeting mitochondria) and ii) Vitamin C (Hit-2: targeting glycolysis), which represents a new synthetic-lethal metabolic strategy for eradicating CSCs. This type of metabolic Achilles’ heel will allow us and others to more effectively “starve” the CSC population.
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