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Tsai MF, Nargotra P, Liao KT, Wang HMD, Tsai YH, Liu YC, Kuo CH. High oxidative stability of a complex fish liver oil nano-capsules in response to long-term storage, and to hyperthermal and sunlight exposure. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:3594-3605. [PMID: 38149759 DOI: 10.1002/jsfa.13243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/12/2023] [Accepted: 12/27/2023] [Indexed: 12/28/2023]
Abstract
BACKGROUND In this study, a biocompatible nano-carrying platform using chitosan (ChI) and chondroitin sulfate (ChS) was developed for the encapsulation of cobia liver oil (CBLO) to prevent its oxidation and improve its absorption. An ionic gelation method was applied to encapsulate CBLO with different weight ratios (from 1.0 to 1.5) to obtain ChS-ChI nano-capsules (ChS-ChI@CBLO NCs). RESULTS Morphological observations of the nano-capsules revealed a spherical shape and diameter around 267-381 nm. The maximum loading capacity (LC) and encapsulation efficiency (EE) for ChS-ChI@CBLO NCs estimated by thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) analysis were 25.7% and 56.2%, respectively. The structural stability of ChS-ChI@CBLO NCs was confirmed through differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analysis; moreover DSC also further confirmed the oxidative stability of ChS-ChI@CBLO NCs. Fourier-transform infrared (FTIR) spectra confirmed the excellent stability of ChS-ChI@CBLO NCs against high temperature and sunlight exposure. Biocompatibility analysis also verified the non-toxicity of ChS-ChI@CBLO NCs, further indicating safety and potential application in complex-nutritional supplements. CONCLUSION Nano-degree of ChS-ChI@CBLO NCs has a loading capacity and encapsulation efficiency of around 16.5 ~ 25.7% and 33.4 ~ 56.2%, respectively, for encapsulation of CBLO. Characterization results also indicate that ChS-ChI@CBLO NCs display high oxidative stability against long-term, hyperthermal, and sunlight exposure. Bioassay results confirm that the ChS-ChI@CBLO NCs are safe and non-toxic. This study demonstrates that nano-capsules are also beneficial in preventing sensitive compounds from metamorphosis, and are non-toxic. These materials are suitable for use in the food and pharmaceutical industries. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Ming-Fong Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Parushi Nargotra
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Kuan-Ting Liao
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Hui-Min David Wang
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Yung-Hsiang Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Yung-Chuan Liu
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Chia-Hung Kuo
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
- Center for Aquatic Products Inspection Service, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
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Zhang Y, Sun Y, Song S, Khankari NK, Brenna JT, Shen Y, Ye K. Associations of plasma omega-6 and omega-3 fatty acids with overall and 19 site-specific cancers: a population-based cohort study in UK Biobank. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.21.24301568. [PMID: 38343844 PMCID: PMC10854355 DOI: 10.1101/2024.01.21.24301568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Background Previous epidemiological studies of the associations between polyunsaturated fatty acids (PUFAs) and cancer incidence have been inconsistent. We investigated the associations of plasma omega-3 and omega-6 PUFAs with the incidence of overall and 19 site-specific cancers in a large prospective cohort. Methods 253,138 eligible UK Biobank participants were included in our study. With a mean follow-up of 12.9 years, 29,838 participants were diagnosed with cancer. The plasma levels of omega-3 and omega-6 PUFAs were expressed as percentages of total fatty acids (omega-3% and omega-6%). Results In our main models, both omega-6% and omega-3% were inversely associated with overall cancer incidence (HR per SD = 0.98, 95% CI = 0.96-0.99; HR per SD = 0.99, 95% CI = 0.97-1.00; respectively). Of the 19 site-specific cancers available, 14 were associated with omega-6% and five with omega-3%, all indicating inverse associations, with the exception that prostate cancer was positively associated with omega-3% (HR per SD = 1.03, 95% CI = 1.01 - 1.05). Conclusions Our population-based cohort study in UK Biobank indicates small inverse associations of plasma omega-6 and omega-3 PUFAs with the incidence of overall and most site-specific cancers, although there are notable exceptions, such as prostate cancer.
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Affiliation(s)
- Yuchen Zhang
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, Georgia, US
| | - Yitang Sun
- Department of Genetics, University of Georgia, Athens, Georgia, US
| | - Suhang Song
- Department of Health Policy and Management, College of Public Health, University of Georgia, Athens, Georgia, US
| | - Nikhil K. Khankari
- Division of Genetic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, US
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, Tennessee, US
| | - J. Thomas Brenna
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, US
- Dell Pediatric Research Institute and the Depts of Pediatrics, of Nutrition, and of Chemistry, University of Texas at Austin, Austin, TX, US
| | - Ye Shen
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, Georgia, US
| | - Kaixiong Ye
- Department of Genetics, University of Georgia, Athens, Georgia, US
- Institute of Bioinformatics, University of Georgia, Athens, Georgia, US
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Assessing the Highest Level of Evidence from Randomized Controlled Trials in Omega-3 Research. Nutrients 2023; 15:nu15041001. [PMID: 36839358 PMCID: PMC9959429 DOI: 10.3390/nu15041001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Over the years, there has been heightened interest in the health benefits of n-3 polyunsaturated fatty acids (PUFA) in reducing chronic diseases such as, cardiovascular disease (CVD), cancer, type 2 diabetes, and acute macular degeneration (AMD). Due to inconsistent findings in the evidence, a review to critically examine the plethora of evidence from randomized controlled trials (RCTs) in n-3 PUFA research was undertaken. The aim of this review is to study the highest level of evidence and to identify gaps in n-3 PUFA research. RCTs were originally designed for pharmaceutical research and later adopted for nutrition and food-related research. RCTs with active diseases assume that n-3 PUFA will have "drug" like effects, and this high expectation may have led to the inconsistent evidence in the literature. The inconsistency in the literature may be related to varying doses of n-3 PUFA, sources of n-3 PUFA (food vs. supplement; plant vs. marine), type of n-3 PUFA (mixture vs. purified), trial duration, population characteristics, sample size, and genetic variation. For future research, there is a need to distinguish between primary and secondary prevention, and to focus RCTs on primary prevention of chronic diseases by n-3 PUFA which is lacking in the literature.
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Contribution of n-3 Long-Chain Polyunsaturated Fatty Acids to the Prevention of Breast Cancer Risk Factors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19137936. [PMID: 35805595 PMCID: PMC9265492 DOI: 10.3390/ijerph19137936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 02/01/2023]
Abstract
Nowadays, diet and breast cancer are studied at different levels, particularly in tumor prevention and progression. Thus, the molecular mechanisms leading to better knowledge are deciphered with a higher precision. Among the molecules implicated in a preventive and anti-progressive way, n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFAs) are good candidates. These molecules, like docosahexaenoic (DHA) and eicosapentaenoic (EPA) acids, are generally found in marine material, such as fat fishes or microalgae. EPA and DHA act as anti-proliferative, anti-invasive, and anti-angiogenic molecules in breast cancer cell lines, as well as in in vivo studies. A better characterization of the cellular and molecular pathways involving the action of these fatty acids is essential to have a realistic image of the therapeutic avenues envisaged behind their use. This need is reinforced by the increase in the number of clinical trials involving more and more n-3 LC-PUFAs, and this, in various pathologies ranging from obesity to a multitude of cancers. The objective of this review is, therefore, to highlight the new elements showing the preventive and beneficial effects of n-3 LC-PUFAs against the development and progression of breast cancer.
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Katsouri IP, Vandervelpen EVG, Gattor AO, Engelbeen S, El Sayed A, Seitaj K, Becerra EDM, Vanderheyden PML. Complex FFA1 receptor (in)dependent modulation of calcium signaling by free fatty acids. Biochem Pharmacol 2022; 202:115150. [PMID: 35724691 DOI: 10.1016/j.bcp.2022.115150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/26/2022]
Abstract
The expression of free fatty acid 1 receptors (FFA1R), activated by long chain fatty acids in human pancreatic β-cells and enhancing glucose-stimulated insulin secretion are an attractive target to treat type 2 diabetes. Yet several clinical studies with synthetic FFA1R agonists had to be discontinued due to cytotoxicity and/or so-called "liver concerns". It is not clear whether these obstructions are FFA1R dependent. In this context we used CHO-AEQ cells expressing the bioluminescent calcium-sensitive protein aequorin to investigate calcium signaling elicited by FFA1 receptor ligands α-linolenic acid (ALA), oleic acid (OLA) and myristic acid (MYA). This study revealed complex modulation of intracellular calcium signaling by these fatty acids. First these compounds elicited a typical transient increase of intracellular calcium via binding to FFA1 receptors. Secondly slightly higher concentrations of ALA substantially reduced ATP mediated calcium responses in CHO-AEQ cells and Angiotensin II responses in CHO-AEQ cells expressing human AT1 receptors. This effect was less pronounced with MYA and OLA and was not linked to FFA1 receptor activation nor to acute cytotoxicity as a result of plasma membrane perturbation. Yet it can be hypothesized that, in line with previous studies, unsaturated long chain fatty acids such as ALA and OLA are capable of inactivating the G-proteins involved in purinergic and Angiotensin AT1 receptor calcium signaling. Alternatively the ability of fatty acids to deplete intracellular calcium stores might underly the observed cross-inhibition of these receptor responses in the same cells.
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Affiliation(s)
- Ilektra Petrina Katsouri
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Ebert Vinciane G Vandervelpen
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Albert Owusu Gattor
- Lehrstuhl für Pharmazeutische und Medizinische Chemie II, Universität Regensburg, Regensburg, Germany
| | - Sarah Engelbeen
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Abdulrahman El Sayed
- The International Institute of Molecular Mechanisms and Machines, Polish Academy of Sciences, Warsaw, Poland
| | - Klejdia Seitaj
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Eduardo Daniel Morales Becerra
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Patrick M L Vanderheyden
- Research Group of Molecular and Biochemical Pharmacology, Department of Biotechnology and Bioengineering, Vrije Universiteit Brussel, Brussels, Belgium.
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Davis H, Magistrali A, Butler G, Stergiadis S. Nutritional Benefits from Fatty Acids in Organic and Grass-Fed Beef. Foods 2022; 11:foods11050646. [PMID: 35267281 PMCID: PMC8909876 DOI: 10.3390/foods11050646] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/12/2022] Open
Abstract
Livestock production is under increasing scrutiny as a component of the food supply chain with a large impact on greenhouse gas emissions. Amidst growing calls to reduce industrial ruminant production, there is room to consider differences in meat quality and nutritional benefits of organic and/or pasture-based management systems. Access to forage, whether fresh or conserved, is a key influencing factor for meat fatty acid profile, and there is increasing evidence that pasture access is particularly beneficial for meat’s nutritional quality. These composition differences ultimately impact nutrient supply to consumers of conventional, organic and grass-fed meat. For this review, predicted fatty acid supply from three consumption scenarios were modelled: i. average UK population National Diet and Nutrition Survey (NDNS) (<128 g/week) red meat consumption, ii. red meat consumption suggested by the UK National Health Service (NHS) (<490 g/week) and iii. red meat consumption suggested by the Eat Lancet Report (<98 g/week). The results indicate average consumers would receive more of the beneficial fatty acids for human health (especially the essential omega-3, alpha-linolenic acid) from pasture-fed beef, produced either organically or conventionally.
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Affiliation(s)
- Hannah Davis
- School of Natural and Environmental Science, Newcastle University, Newcastle-upon-Tyne NE1 7RU, UK; (A.M.); (G.B.)
- Correspondence: (H.D.); (S.S.)
| | - Amelia Magistrali
- School of Natural and Environmental Science, Newcastle University, Newcastle-upon-Tyne NE1 7RU, UK; (A.M.); (G.B.)
| | - Gillian Butler
- School of Natural and Environmental Science, Newcastle University, Newcastle-upon-Tyne NE1 7RU, UK; (A.M.); (G.B.)
| | - Sokratis Stergiadis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6EU, UK
- Correspondence: (H.D.); (S.S.)
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Robinson GF, Sooda KKY, Phillips RM, Allison SJ, Javid FA. Investigation of the cytotoxicity induced by didocosahexaenoin, an omega 3 derivative, in human prostate carcinoma cell lines. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2022; 3:100085. [PMID: 35112078 PMCID: PMC8790608 DOI: 10.1016/j.crphar.2022.100085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 10/29/2022] Open
Abstract
The aim of the present study was to investigate the cytotoxicity induced by an omega-3 derivative, didocosahexaenoin (Dido) on human prostate carcinoma cells and to compare the cytotoxicity to that of docosahexaenoic acid (DHA). Different carcinoma- and non-carcinoma cells were exposed to various concentrations of omega-3 compounds at varying exposure times and the cytotoxicity was measured by MTT assay. The mechanism of Dido-induced apoptosis was investigated in prostate carcinoma cells. Dido induced stronger cytotoxicity than DHA in human prostate carcinoma cells in a dose- and time-dependent manner. Dido was also more selective and potent in inducing cytotoxicity in prostate carcinoma cells than other carcinoma cell lines tested. Pre-treatment with Dido increased the level of reactive oxygen species (ROS) in prostate carcinoma cells. Pre-treatment with various antioxidants reduced the cytotoxicity induced by Dido. Pre-treatment with Dido ≥30 μM also induced apoptosis which was suggested to involve an externalisation of phosphatidyl serine, a significant increase in the mitochondrial membrane potential (p < 0.01) and the level of activated caspase 3/7 (p < 0.05) in prostate carcinoma cells. This study is the first to show that Dido induced cytotoxicity with high selectivity and higher potency than DHA in human prostate carcinoma cells. The mechanism of action is likely to involve an increase in the level of ROS, loss in the mitochondrial membrane potential as well as externalisation of phosphatidyl serine and increase in the caspase 3/7 activity. Dido may have potential to be used for the adjuvant therapy or combination therapy with conventional chemotherapeutic drugs.
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Affiliation(s)
- Glenn F. Robinson
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Kartheek KY. Sooda
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Roger M. Phillips
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Simon J. Allison
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Farideh A. Javid
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
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Sahin D. Effect of Oil Extract from Microalgae (Schizochytrium sp.) on the Viability and Apoptosis of Human Osteosarcoma Cells. Curr Pharm Biotechnol 2021; 22:1099-1105. [PMID: 32988350 DOI: 10.2174/1389201021666200928101029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/30/2020] [Accepted: 09/01/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Osteosarcoma is a malignant tumor type that starts in bone and occurs most frequently in adolescents. Traditional techniques are insufficient, especially for metastatic ones. As alternative treatment techniques, natural products are worthy of examining due to being safe and innovative. Essential polyunsaturated fatty acids, mainly omega-3 and omega-6 fatty acids, have various positive effects on human health and growth. In addition, some PUFAs show anti-cancer activity by inducing apoptosis, specifically in cancer cells. OBJECTIVE Here, the study aims to investigate the time and dose-dependent effects of oil extract from Schizochytrium sp. against the osteosarcoma cell line. MATERIALS AND METHODS Human Fetal Osteoblast Cells (hFOB) and osteosarcoma cells (SAOS-2) were treated with different concentrations of fatty acid samples. GC-FID was performed for fatty acid composition analysis of Schizochytrium sp. MTT-cell viability and Annexin V-apoptosis assays were performed to investigate the time and dose-dependent effects of the samples on cell lines. RESULTS The oil extract sample has a specific activity against the SAOS-2 cancer line and decreases cell proliferation, especially at high dose treatments. Apoptosis assay results indicate that the oil extract sample causes a significant increase in the number of apoptotic cells in the SAOS-2 cell line (71.7% of SAOS-2 cells), which shows its selective activity against bone cancer cell line as a natural anti-cancer molecule. CONCLUSION It was observed that Schizochytrium sp. extract has a time and dose-dependent ability to induce apoptosis, specifically in SAOS-2 cells.
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Affiliation(s)
- Deniz Sahin
- Department of Molecular Biology and Genetics, Istanbul Technical University, Istanbul, Turkey
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9
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Tsai CH, Lii CK, Wang TS, Liu KL, Chen HW, Huang CS, Li CC. Docosahexaenoic acid promotes the formation of autophagosomes in MCF-7 breast cancer cells through oxidative stress-induced growth inhibitor 1 mediated activation of AMPK/mTOR pathway. Food Chem Toxicol 2021; 154:112318. [PMID: 34116103 DOI: 10.1016/j.fct.2021.112318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/13/2021] [Accepted: 05/29/2021] [Indexed: 11/18/2022]
Abstract
Docosahexaenoic acid (DHA) is known to regulate autophagy in cancer cells. We explored whether oxidative stress-induced growth inhibitor 1 (OSGIN1) is involved in the regulation of autophagy by DHA in breast cancer cells and the possible mechanisms involved. DHA upregulated the levels of OSGIN1, LC3-II and SQSTM1/p62. By contrast, DHA dose-dependently decreased the levels of mTOR and p-mTORS2448 expression. Using GFP/RFP-LC3 fluorescence staining, we showed that cells treated with DHA showed a dose-dependent response in autophagic signals. OSGIN1 Overexpression mimicked DHA treatment in that LC3-II and GFP/RFP-LC3 signals as well as the expression of p-AMPKαT172 and p-RaptorS792 were significantly increased, whereas mTOR, p-mTORS2448, and p-ULK1S757 expression were decreased. With knockdown of OSGIN1 expression, these outcomes were reversed. Moreover, OSGIN1 overexpression transiently elevated the accumulation of OSGIN1 and reactive oxygen species (ROS) in the mitochondrial fraction and subsequently increased p-AMPKαT172 and p-RaptorS792 expression. Upon pretreatment with Mito-TEMPO, a scavenger of mitochondrial ROS, these outcomes were reversed. Taken together, these results suggest that DHA can transiently elevate the generation of ROS in mitochondria and promote autophagosome formation through activation of the p-AMPKαT172/p-Raptor S792 and inactivation of the p-mTORS2448/p-ULK1Ser757 signaling pathways, and these effects depend on OSGIN1 protein in MCF-7 cells.
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Affiliation(s)
- Chia-Han Tsai
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan
| | - Chong-Kuei Lii
- Department of Nutrition, China Medical University, Taichung, Taiwan; Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Tsu-Shing Wang
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
| | - Kai-Li Liu
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan; Department of Nutrition, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Haw-Wen Chen
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Chin-Shiu Huang
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Chien-Chun Li
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan; Department of Nutrition, Chung Shan Medical University Hospital, Taichung, Taiwan.
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Story MJ. Zinc, ω-3 polyunsaturated fatty acids and vitamin D: An essential combination for prevention and treatment of cancers. Biochimie 2020; 181:100-122. [PMID: 33307154 DOI: 10.1016/j.biochi.2020.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 11/14/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023]
Abstract
Zinc, ω-3 polyunsaturated fatty acids (PUFAs) and vitamin D are essential nutrients for health, maturation and general wellbeing. Extensive literature searches have revealed the widespread similarity in molecular biological properties of zinc, ω-3 PUFAs and vitamin D, and their similar anti-cancer properties, even though they have different modes of action. These three nutrients are separately essential for good health, especially in the aged. Zinc, ω-3 PUFAs and vitamin D are inexpensive and safe as they are fundamentally natural and have the properties of correcting and inhibiting undesirable actions without disturbing the normal functions of cells or their extracellular environment. This review of the anticancer properties of zinc, ω-3 PUFAs and vitamin D is made in the context of the hallmarks of cancer. The anticancer properties of zinc, ω-3 PUFAs and vitamin D can therefore be used beneficially through combined treatment or supplementation. It is proposed that sufficiency of zinc, ω-3 PUFAs and vitamin D is a necessary requirement during chemotherapy treatment and that clinical trials can have questionable integrity if this sufficiency is not checked and maintained during efficacy trials.
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Affiliation(s)
- Michael J Story
- Story Pharmaceutics Pty Ltd, PO Box 6086, Linden Park, South Australia, 5065, Australia.
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Low Serum Eicosapentaenoic Acid Levels in Cryptogenic Stroke with Active Cancer. J Stroke Cerebrovasc Dis 2020; 29:104892. [DOI: 10.1016/j.jstrokecerebrovasdis.2020.104892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 04/13/2020] [Indexed: 12/21/2022] Open
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Fattahi N, Shahbazi MA, Maleki A, Hamidi M, Ramazani A, Santos HA. Emerging insights on drug delivery by fatty acid mediated synthesis of lipophilic prodrugs as novel nanomedicines. J Control Release 2020; 326:556-598. [PMID: 32726650 DOI: 10.1016/j.jconrel.2020.07.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/25/2022]
Abstract
Many drug molecules that are currently in the market suffer from short half-life, poor absorption, low specificity, rapid degradation, and resistance development. The design and development of lipophilic prodrugs can provide numerous benefits to overcome these challenges. Fatty acids (FAs), which are lipophilic biomolecules constituted of essential components of the living cells, carry out many necessary functions required for the development of efficient prodrugs. Chemical conjugation of FAs to drug molecules may change their pharmacodynamics/pharmacokinetics in vivo and even their toxicity profile. Well-designed FA-based prodrugs can also present other benefits, such as improved oral bioavailability, promoted tumor targeting efficiency, controlled drug release, and enhanced cellular penetration, leading to improved therapeutic efficacy. In this review, we discuss diverse drug molecules conjugated to various unsaturated FAs. Furthermore, various drug-FA conjugates loaded into various nanostructure delivery systems, including liposomes, solid lipid nanoparticles, emulsions, nano-assemblies, micelles, and polymeric nanoparticles, are reviewed. The present review aims to inspire readers to explore new avenues in prodrug design based on the various FAs with or without nanostructured delivery systems.
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Affiliation(s)
- Nadia Fattahi
- Department of Chemistry, Faculty of Science, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran; Trita Nanomedicine Research Center (TNRC), Trita Third Millennium Pharmaceuticals, 45331-55681 Zanjan, Iran
| | - Mohammad-Ali Shahbazi
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland; Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran; Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran.
| | - Aziz Maleki
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran; Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mehrdad Hamidi
- Trita Nanomedicine Research Center (TNRC), Trita Third Millennium Pharmaceuticals, 45331-55681 Zanjan, Iran; Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran; Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran.
| | - Ali Ramazani
- Department of Chemistry, Faculty of Science, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran; Research Institute of Modern Biological Techniques (RIMBT), University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland; Helsinki Institute of Life Science (HiLIFE), Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland.
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Hanson S, Thorpe G, Winstanley L, Abdelhamid AS, Hooper L. Omega-3, omega-6 and total dietary polyunsaturated fat on cancer incidence: systematic review and meta-analysis of randomised trials. Br J Cancer 2020; 122:1260-1270. [PMID: 32114592 PMCID: PMC7156752 DOI: 10.1038/s41416-020-0761-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/27/2020] [Accepted: 02/05/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The relationship between long-chain omega-3 (LCn3), alpha-linolenic acid (ALA), omega-6 and total polyunsaturated fatty acid (PUFA) intakes and cancer risk is unclear. METHODS We searched Medline, Embase, CENTRAL and trials registries for RCTs comparing higher with lower LCn3, ALA, omega-6 and/or total PUFA, that assessed cancers over ≥12 months. Random-effects meta-analyses, sensitivity analyses, subgrouping, risk of bias and GRADE were used. RESULTS We included 47 RCTs (108,194 participants). Increasing LCn3 has little or no effect on cancer diagnosis (RR1.02, 95% CI 0.98-1.07), cancer death (RR0.97, 95% CI 0.90-1.06) or breast cancer diagnosis (RR1.03, 95% CI 0.89-1.20); increasing ALA has little or no effect on cancer death (all high/moderate-quality evidence). Increasing LCn3 (NNTH 334, RR1.10, 95% CI 0.97-1.24) and ALA (NNTH 334, RR1.30, 95% CI 0.72-2.32) may slightly increase prostate cancer risk; increasing total PUFA may slightly increase risk of cancer diagnosis (NNTH 125, RR1.19, 95% CI 0.99-1.42) and cancer death (NNTH 500, RR1.10, 95% CI 0.48-2.49) but total PUFA doses were very high in some trials. CONCLUSIONS The most extensive systematic review to assess the effects of increasing PUFAs on cancer risk found increasing total PUFA may very slightly increase cancer risk, offset by small protective effects on cardiovascular diseases.
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Affiliation(s)
- Sarah Hanson
- School of Health Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Gabrielle Thorpe
- School of Health Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Lauren Winstanley
- Norwich Medical School, University of East Anglia, Norwich, NR4 7TJ, UK
| | | | - Lee Hooper
- Norwich Medical School, University of East Anglia, Norwich, NR4 7TJ, UK.
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Ding X, Ge L, Yan A, Ding Y, Tao J, Liu Q, Qiao C. Docosahexaenoic Acid Serving As Sensitizing Agents And Gefitinib Resistance Revertants In EGFR Targeting Treatment. Onco Targets Ther 2019; 12:10547-10558. [PMID: 31819534 PMCID: PMC6897069 DOI: 10.2147/ott.s225918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 10/31/2019] [Indexed: 12/17/2022] Open
Abstract
Objective Due to the resistance of cancer cells, chemotherapy has been severely restricted. Docosahexaenoic acid (DHA) has been broadly identified as the chemo-sensitizing agent and revertant of multidrug resistance owing to its pleiotropic characteristics; however, it has not been well interpreted. The purpose of this research was to identify the anticancer role of DHA and its combination with the chemotherapeutic agent Gefitinib in non-small cell lung cancer (NSCLC). Methods Human chemo-sensitive NSCLC PC-9 cells and the Gefitinib-resistant counterpart PC-9/GR cells were adopted to assess the effects of the integrated DHA and Gefitinib treatments in vitro and vivo, for which the combination index (CI), apoptosis rate and the epithelial growth factor receptor (EGFR) pathway were analyzed. Results Comparing with the control cells, the DHA-treated PC-9/GR cells triggered the increase of drug absorption and sensitivity, suggesting that the sensitivity of chemotherapeutic drug could be induced by DHA. Moreover, the elevation of phosphorylation levels of EGFR and the downstream extracellular signal-regulated kinase (ERK) in the cellular lysates were induced by the DHA+Gefitinib treatment. Additionally, the long-term Gefitinib stimulated PC-9 model revealed that DHA could revert the Gefitinib resistance. Conclusion This is the first research that indicated the novel biochemical effect of DHA, which can help in overcoming the resistance of EGFR-TKI in NSCLC cells and broaden the horizon of the DHA supplementation during the NSCLC therapy.
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Affiliation(s)
- Xuansheng Ding
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Lei Ge
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Aiwen Yan
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Yuyin Ding
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Junye Tao
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Qianqian Liu
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Chen Qiao
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
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15
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Ashfaq W, Rehman K, Siddique MI, Khan QAA. Eicosapentaenoic Acid and Docosahexaenoic Acid from Fish Oil and Their Role in Cancer Research. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1686761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wardah Ashfaq
- Department of Medicine, Ameer ud Din Medical College, Lahore, Pakistan
| | - Khurram Rehman
- Department of Pharmacy, Forman Christan College (A Chartered University), Lahore, Pakistan
| | - Muhammad Irfan Siddique
- Institute of Pharmaceutical Sciences, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - Qurrat-Al-Ain Khan
- Institute of Pharmaceutical Sciences, University of Veterinary & Animal Sciences, Lahore, Pakistan
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16
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Amaral-Machado L, Oliveira WN, Alencar ÉN, Cruz AKM, Rocha HAO, Ebeid K, Salem AK, Egito EST. Bullfrog oil (Rana catesbeiana Shaw) induces apoptosis, in A2058 human melanoma cells by mitochondrial dysfunction triggered by oxidative stress. Biomed Pharmacother 2019; 117:109103. [PMID: 31203130 DOI: 10.1016/j.biopha.2019.109103] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 06/03/2019] [Accepted: 06/06/2019] [Indexed: 12/18/2022] Open
Abstract
Bullfrog oil, an animal oil extracted from the adipose tissue of Rana catesbeiana Shaw, showed promising cytotoxic activity against melanoma cells and, therefore, has the potential to become a pharmaceutical active compound. However, there is a lack of information regarding the pathways involved in its pharmacological activity. Thus, the aim of this study was to investigate and elucidate the cytotoxic effect of this oil against A2058 human melanoma cells. The cytotoxic potential was evaluated by the MTT assay, the cell cycle analysis and the cell death assay. In addition, the apoptotic potential was investigated by (i) the DNA fragmentation using propidium iodide staining analysis, (ii) the evaluation of mitochondrial membrane potential and (iii) the determination of intracellular Reactive Oxygen Species (ROS) level. The results showed that the bullfrog oil was able to promote a time-dependent cytotoxic effect, decreasing cell viability to 38% after 72 h of treatment without affecting the cell cycle. Additionally, the bullfrog oil induced the apoptosis in A2058 cells, increasing up to 50 ± 13% of the intracellular ROS level, maintaining the DNA integrity and promoting an approximate decrease of 35 ± 5% in the mitochondrial membrane potential. It can be concluded that the in vitro cytotoxic effect of the bullfrog oil in A2058 human melanoma cells is mediated by oxidative stress that induces mitochondrial dysfunction, triggering the apoptosis. These unprecedented results highlight the pharmacological potential of bullfrog oil and provide important information to support studies on the development of new pharmaceutical products for complementary and alternative treatments for melanoma.
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Affiliation(s)
- Lucas Amaral-Machado
- Graduation Program in Health Sciences, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | | | - Éverton N Alencar
- Graduation Program in Health Sciences, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | | | | | - Kareem Ebeid
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA; Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Aliasger K Salem
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA
| | - Eryvaldo Sócrates T Egito
- Graduation Program in Health Sciences, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil; Graduation Program in Pharmaceutical Sciences, UFRN, Natal, Brazil.
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17
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Zhang Y, Zhang B, Dong L, Chang P. Potential of Omega-3 Polyunsaturated Fatty Acids in Managing Chemotherapy- or Radiotherapy-Related Intestinal Microbial Dysbiosis. Adv Nutr 2019; 10:133-147. [PMID: 30566596 PMCID: PMC6370266 DOI: 10.1093/advances/nmy076] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 09/10/2018] [Indexed: 02/06/2023] Open
Abstract
Chemotherapy- or radiotherapy-related intestinal microbial dysbiosis is one of the main causes of intestinal mucositis. Cases of bacterial translocation into peripheral blood and subsequent sepsis occur as a result of dysfunction in the intestinal barrier. Evidence from recent studies depicts the characteristics of chemotherapy- or radiotherapy-related intestinal microbial dysbiosis, which creates an imbalance between beneficial and harmful bacteria in the gut. Decreases in beneficial bacteria can lead to a weakening of the resistance of the gut to harmful bacteria, resulting in robust activation of proinflammatory signaling pathways. For example, lipopolysaccharide (LPS)-producing bacteria activate the nuclear transcription factor-κB signaling pathway through binding with Toll-like receptor 4 on stressed epithelial cells, subsequently leading to secretion of proinflammatory cytokines. Nevertheless, various studies have found that the omega-3 (n-3) polyunsaturated fatty acids (PUFAs) such as docosahexaenoic acid and eicosapentaenoic acid can reverse intestinal microbial dysbiosis by increasing beneficial bacteria species, including Lactobacillus, Bifidobacterium, and butyrate-producing bacteria, such as Roseburia and Coprococcus. In addition, the n-3 PUFAs decrease the proportions of LPS-producing and mucolytic bacteria in the gut, and they can reduce inflammation as well as oxidative stress. Importantly, the n-3 PUFAs also exert anticancer effects in colorectal cancers. In this review, we summarize the characteristics of chemotherapy- or radiotherapy-related intestinal microbial dysbiosis and introduce the contributions of dysbiosis to the pathogenesis of intestinal mucositis. Next, we discuss how n-3 PUFAs could alleviate chemotherapy- or radiotherapy-related intestinal microbial dysbiosis. This review provides new insights into the clinical administration of n-3 PUFAs for the management of chemotherapy- or radiotherapy-related intestinal microbial dysbiosis.
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Affiliation(s)
- Yue Zhang
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, ChangChun, China
| | - Boyan Zhang
- Orthopedic Medical Center, The Second Hospital of Jilin University, ChangChun, China
| | - Lihua Dong
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, ChangChun, China,Address correspondence to LD (e-mail: )
| | - Pengyu Chang
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, ChangChun, China,Address correspondence to PC (e-mail: )
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Profiling of Heterobranchia Sea Slugs from Portuguese Coastal Waters as Producers of Anti-Cancer and Anti-Inflammatory Agents. Molecules 2018; 23:molecules23051027. [PMID: 29702573 PMCID: PMC6100031 DOI: 10.3390/molecules23051027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 02/02/2023] Open
Abstract
Bioprospection of marine invertebrates has been predominantly biased by the biological richness of tropical regions, thus neglecting macro-organisms from temperate ecosystems. Species that were not the object of studies on their biochemical composition include the Heterobranchia gastropods Armina maculata, Armina tigrina and Aglaja tricolorata, inhabitants of the Portuguese Atlantic coastal waters. Here, we present for the first time the fatty acid profile of neutral lipids and homarine content of these three species. Qualitative and quantitative differences in the fatty acid content among species points to the existence of a fatty acid profile of neutral lipids, particularly of each genus. The results from cytotoxicity assays, using the acetonic extracts of the gastropods on human gastric adenocarcinoma (AGS) and human lung adenocarcinoma (A549) cell lines, revealed a pronounced cytotoxic effect of the A. tigrina extract on both cell lines (IC50 values of 68.75 and 69.77 μg mL−1 for AGS and A549, respectively). It is worth noting the significant reduction of NO levels in LPS-challenged RAW 264.7 macrophages exposed to A. tricolorata extract, at concentrations as low as 125 μg mL−1.
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Lavriv DS, Neves PM, Ravasco P. Should omega-3 fatty acids be used for adjuvant treatment of cancer cachexia? Clin Nutr ESPEN 2018; 25:18-25. [PMID: 29779814 DOI: 10.1016/j.clnesp.2018.02.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/30/2017] [Accepted: 02/26/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Cancer cachexia is characterised by a progressive loss of muscle, resulting in functional impairment and shorter survival. Therefore, omega-3 has been studied for its role as an anti-cachectic therapy. This systematic review identified studies published on use of omega-3 in cancer cachexia in order to examine the potential benefit. METHODS A systematic review of the literature using PubMed and B-on databases was conducted to identify clinical trials published between 2000 and 2015, to evaluate the effect of n-3 PUFAs on nutritional features and Quality of Life in cancer cachexia. Of 140 publications, 7 were selected on the basis of their methodological quality, according to the Delphi List. The collected data was summarized and written in text format and in tables. RESULTS Only one study, made in pre-cachectic population, show statistically and clinically positive intervention. No benefits were observed with the 4 g EPA/day, but a potentially clinically relevant treatment effect with 2 g EPA/day. Lung tumours showed the highest CRP levels and while the weight of patients with gastrointestinal cancer increased significantly, patients with lung cancer showed no significant response. CONCLUSIONS Future cachexia trials would likely benefit from studying a single tumour type with earlier stage disease, with probably different dosage depending on the cancer type and its inflammatory profile.
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Affiliation(s)
| | - Pedro Miguel Neves
- Centro Interdisciplinar de Investigação em Saúde da Universidade Católica Portuguesa e Universidade de Lisboa, Portugal.
| | - Paula Ravasco
- Centro Interdisciplinar de Investigação em Saúde da Universidade Católica Portuguesa e Universidade de Lisboa, Hospital Universitário de Santa Maria, Portugal
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20
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New perspectives in cancer: Modulation of lipid metabolism and inflammation resolution. Pharmacol Res 2018; 128:80-87. [DOI: 10.1016/j.phrs.2017.09.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 09/29/2017] [Accepted: 09/30/2017] [Indexed: 12/15/2022]
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21
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Zárate R, el Jaber-Vazdekis N, Tejera N, Pérez JA, Rodríguez C. Significance of long chain polyunsaturated fatty acids in human health. Clin Transl Med 2017; 6:25. [PMID: 28752333 PMCID: PMC5532176 DOI: 10.1186/s40169-017-0153-6] [Citation(s) in RCA: 275] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022] Open
Abstract
In the last decades, the development of new technologies applied to lipidomics has revitalized the analysis of lipid profile alterations and the understanding of the underlying molecular mechanisms of lipid metabolism, together with their involvement in the occurrence of human disease. Of particular interest is the study of omega-3 and omega-6 long chain polyunsaturated fatty acids (LC-PUFAs), notably EPA (eicosapentaenoic acid, 20:5n-3), DHA (docosahexaenoic acid, 22:6n-3), and ARA (arachidonic acid, 20:4n-6), and their transformation into bioactive lipid mediators. In this sense, new families of PUFA-derived lipid mediators, including resolvins derived from EPA and DHA, and protectins and maresins derived from DHA, are being increasingly investigated because of their active role in the "return to homeostasis" process and resolution of inflammation. Recent findings reviewed in the present study highlight that the omega-6 fatty acid ARA appears increased, and omega-3 EPA and DHA decreased in most cancer tissues compared to normal ones, and that increments in omega-3 LC-PUFAs consumption and an omega-6/omega-3 ratio of 2-4:1, are associated with a reduced risk of breast, prostate, colon and renal cancers. Along with their lipid-lowering properties, omega-3 LC-PUFAs also exert cardioprotective functions, such as reducing platelet aggregation and inflammation, and controlling the presence of DHA in our body, especially in our liver and brain, which is crucial for optimal brain functionality. Considering that DHA is the principal omega-3 FA in cortical gray matter, the importance of DHA intake and its derived lipid mediators have been recently reported in patients with major depressive and bipolar disorders, Alzheimer disease, Parkinson's disease, and amyotrophic lateral sclerosis. The present study reviews the relationships between major diseases occurring today in the Western world and LC-PUFAs. More specifically this review focuses on the dietary omega-3 LC-PUFAs and the omega-6/omega-3 balance, in a wide range of inflammation disorders, including autoimmune diseases. This review suggests that the current recommendations of consumption and/or supplementation of omega-3 FAs are specific to particular groups of age and physiological status, and still need more fine tuning for overall human health and well being.
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Affiliation(s)
- Rafael Zárate
- Canary Islands Cancer Research Institute (ICIC), Ave. La Trinidad 61, Torre A. Arévalo, 7th floor, 38204 La Laguna, Tenerife Spain
| | - Nabil el Jaber-Vazdekis
- Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic
| | - Noemi Tejera
- Department of Nutrition and Preventive Medicine, Norwich Medical School, University of East Anglia, Norwich, NR4 7UQ UK
| | - José A. Pérez
- Department of Animal Biology, Soil Science and Geology (Animal Physiology Unit), Faculty of Sciences, Universidad de La Laguna, Ave. Astrofísico Francisco Sánchez s/n, 38206 La Laguna, Tenerife Spain
| | - Covadonga Rodríguez
- Department of Animal Biology, Soil Science and Geology (Animal Physiology Unit), Faculty of Sciences, Universidad de La Laguna, Ave. Astrofísico Francisco Sánchez s/n, 38206 La Laguna, Tenerife Spain
- Institute of Biomedical Technologies (ITB), Universidad de La Laguna, Campus de Ofra, 38071 La Laguna, Tenerife Spain
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22
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Abstract
EPA and DHA appear to be the most important n-3 fatty acids, but roles for n-3 docosapentaenoic acid are now also emerging. Intakes of EPA and DHA are usually low, typically below those recommended. Increased intakes result in higher concentrations of EPA and DHA in blood lipids, cells and tissues. Increased content of EPA and DHA modifies the structure of cell membranes and the function of membrane proteins. EPA and DHA modulate the production of lipid mediators and through effects on cell signalling can alter the patterns of gene expression. Through these mechanisms, EPA and DHA alter cell and tissue responsiveness in a way that often results in more optimal conditions for growth, development and maintenance of health. DHA has vital roles in brain and eye development and function. EPA and DHA have a wide range of physiological roles, which are linked to certain health or clinical benefits, particularly related to CVD, cancer, inflammation and neurocognitive function. The benefits of EPA and DHA are evident throughout the life course. Future research will include better identification of the determinants of variation of responses to increased intake of EPA and DHA; more in-depth dose-response studies of the effects of EPA and DHA; clearer identification of the specific roles of EPA, docosapentaenoic acid and DHA; testing strategies to enhance delivery of n-3 fatty acids to the bloodstream; and exploration of sustainable alternatives to fish-derived very long-chain n-3 fatty acids.
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23
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Lee JY, Sim TB, Lee JE, Na HK. Chemopreventive and Chemotherapeutic Effects of Fish Oil derived Omega-3 Polyunsaturated Fatty Acids on Colon Carcinogenesis. Clin Nutr Res 2017; 6:147-160. [PMID: 28770178 PMCID: PMC5539209 DOI: 10.7762/cnr.2017.6.3.147] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer is the third most common cause of cancer related death in the world. Multiple lines of evidence suggest that there is an association between consumption of dietary fat and colon cancer risk. Not only the amount but also the type and the ratio of fatty acids comprising dietary fats consumed have been implicated in the etiology and pathogenesis of colon cancer. Omega-3 (n-3) polyunsaturated fatty acids (PUFAs), such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), have been known to inhibit development of colon cancer by downregulating the expression of genes involved in colon carcinogenesis and also by altering the membrane lipid composition. Data from laboratory, epidemiological, and clinical studies substantiate the beneficial role of n-3 PUFAs in preventing colitis and subsequent development of colon cancer. In addition, recent studies suggest that some n-3 PUFAs can be effective as an adjuvant with chemotherapeutic agents and other natural anticancer compounds in the management of colon cancer. In this review, we discuss chemopreventive and therapeutic effects of fish oil derived long chain n-3 PUFAs, particularly EPA and DHA, with focus on synergetic effects of which they exert when combined with chemotherapeutic agents and other natural compounds.
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Affiliation(s)
- Ja Young Lee
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Tae-Bu Sim
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Jeong-Eun Lee
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Hye-Kyung Na
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea.,Department of Food Science and Biotechnology, College of Knowledge-Based Services Engineering, Sungshin Women's University, Seoul 01133, Korea
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Yin Y, Sun G, Li E, Kiselyov K, Sun D. ER stress and impaired autophagy flux in neuronal degeneration and brain injury. Ageing Res Rev 2017; 34:3-14. [PMID: 27594375 DOI: 10.1016/j.arr.2016.08.008] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 08/31/2016] [Indexed: 12/12/2022]
Abstract
Autophagy is a highly controlled lysosome-mediated function in eukaryotic cells to eliminate damaged or aged long-lived proteins and organelles. It is required for restoring cellular homeostasis in cell survival under multiple stresses. Autophagy is known to be a double-edged sword because too much activation or inhibition of autophagy can disrupt homeostatic degradation of protein and organelles within the brain and play a role in neuronal cell death. Many factors affect autophagy flux function in the brain, including endoplasmic reticulum (ER) stress, oxidative stress, and aging. Newly emerged research indicates that altered autophagy flux functionality is involved in neurodegeneration of the aged brain, chronic neurological diseases, and after traumatic and ischemic brain injuries. In search to identify neuroprotective agents that may reduce oxidative stress and stimulate autophagy, one particular neuroprotective agent docosahexaenoic acid (DHA) presents unique functions in reducing ER and oxidative stress and modulating autophagy. This review will summarize the recent findings on changes of autophagy in aging, neurodegenerative diseases, and brain injury after trauma or ischemic strokes. Discussion of DHA functions is focused on modulating ER stress and autophagy in regard to its neuroprotection and anti-tumor functions.
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Affiliation(s)
- Yan Yin
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian 116023, PR China; Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, United States.
| | - George Sun
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - Eric Li
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - Kirill Kiselyov
- Department of Biological Science, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - Dandan Sun
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, United States; Veterans Affairs Pittsburgh Health Care System, Geriatric Research, Education and Clinical Center, Pittsburgh, PA 15213, United States.
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Ivanova D, Zhelev Z, Aoki I, Bakalova R, Higashi T. Overproduction of reactive oxygen species - obligatory or not for induction of apoptosis by anticancer drugs. Chin J Cancer Res 2016; 28:383-96. [PMID: 27647966 PMCID: PMC5018533 DOI: 10.21147/j.issn.1000-9604.2016.04.01] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Many studies demonstrate that conventional anticancer drugs elevate intracellular level of reactive oxygen species (ROS) and alter redox-homeostasis of cancer cells. It is widely accepted that anticancer effect of these chemotherapeutics is due to induction of oxidative stress and ROS-mediated apoptosis in cancer. On the other hand, the harmful side effects of conventional anticancer chemotherapy are also due to increased production of ROS and disruption of redox-homeostasis of normal cells and tissues. This article describes the mechanisms for triggering and modulation of apoptosis through ROS-dependent and ROS-independent pathways. We try to answer the question: "Is it possible to induce highly specific apoptosis only in cancer cells, without overproduction of ROS, as well as without harmful effects on normal cells and tissues?" The review also suggests a new therapeutic strategy for selective killing of cancer cells, without significant impact on viability of normal cells and tissues, by combining anticancer drugs with redox-modulators, affecting specific signaling pathways and avoiding oxidative stress.
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Affiliation(s)
- Donika Ivanova
- Medical Faculty, Trakia University, Stara Zagora 6000, Bulgaria
| | - Zhivko Zhelev
- Medical Faculty, Trakia University, Stara Zagora 6000, Bulgaria; Institute of Biophysics & Biomedical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Ichio Aoki
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Rumiana Bakalova
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan; Medical Faculty, Sofia University, Sofia 1407, Bulgaria
| | - Tatsuya Higashi
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
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26
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Finco AMDO, Mamani LDG, Carvalho JCD, de Melo Pereira GV, Thomaz-Soccol V, Soccol CR. Technological trends and market perspectives for production of microbial oils rich in omega-3. Crit Rev Biotechnol 2016; 37:656-671. [PMID: 27653190 DOI: 10.1080/07388551.2016.1213221] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In recent years, foods that contain omega-3 lipids have emerged as important promoters of human health. These lipids are essential for the functional development of the brain and retina, and reduction of the risk of cardiovascular and Alzheimer's diseases. The global market for omega-3 production, particularly docosahexaenoic acid (DHA), saw a large expansion in the last decade due to the increasing use of this lipid as an important component of infant food formulae and supplements. The production of omega-3 lipids from fish and vegetable oil sources has some drawbacks, such as complex purification procedures, unwanted contamination by marine pollutants, reduction or even extinction of several species of fish, and aspects related to sustainability. A promising alternative system for the production of omega-3 lipids is from microbial metabolism of yeast, fungi, or microalgae. The aim of this review is to discuss the various omega-3 sources in the context of the global demand and market potential for these bioactive compounds. To summarize, it is clear that fish and vegetable oil sources will not be sufficient to meet the future needs of the world population. The biotechnological production of single-cell oil comes as a sustainable alternative capable of supplementing the global demand for omega-3, causing less environmental impact.
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Affiliation(s)
- Ana Maria de Oliveira Finco
- a Department of Bioprocess Engineering and Biotechnology , Federal University of Paraná (UFPR) , Curitiba , PR , Brazil
| | - Luis Daniel Goyzueta Mamani
- a Department of Bioprocess Engineering and Biotechnology , Federal University of Paraná (UFPR) , Curitiba , PR , Brazil
| | - Júlio Cesar de Carvalho
- a Department of Bioprocess Engineering and Biotechnology , Federal University of Paraná (UFPR) , Curitiba , PR , Brazil
| | | | - Vanete Thomaz-Soccol
- a Department of Bioprocess Engineering and Biotechnology , Federal University of Paraná (UFPR) , Curitiba , PR , Brazil
| | - Carlos Ricardo Soccol
- a Department of Bioprocess Engineering and Biotechnology , Federal University of Paraná (UFPR) , Curitiba , PR , Brazil
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Docosahexaenoic Acid Induces Oxidative DNA Damage and Apoptosis, and Enhances the Chemosensitivity of Cancer Cells. Int J Mol Sci 2016; 17:ijms17081257. [PMID: 27527148 PMCID: PMC5000655 DOI: 10.3390/ijms17081257] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/16/2016] [Accepted: 07/27/2016] [Indexed: 12/11/2022] Open
Abstract
The human diet contains low amounts of ω-3 polyunsaturated fatty acids (PUFAs) and high amounts of ω-6 PUFAs, which has been reported to contribute to the incidence of cancer. Epidemiological studies have shown that a high consumption of fish oil or ω-3 PUFAs reduced the risk of colon, pancreatic, and endometrial cancers. The ω-3 PUFA, docosahexaenoic acid (DHA), shows anticancer activity by inducing apoptosis of some human cancer cells without toxicity against normal cells. DHA induces oxidative stress and oxidative DNA adduct formation by depleting intracellular glutathione (GSH) and decreasing the mitochondrial function of cancer cells. Oxidative DNA damage and DNA strand breaks activate DNA damage responses to repair the damaged DNA. However, excessive DNA damage beyond the capacity of the DNA repair processes may initiate apoptotic signaling pathways and cell cycle arrest in cancer cells. DHA shows a variable inhibitory effect on cancer cell growth depending on the cells’ molecular properties and degree of malignancy. It has been shown to affect DNA repair processes including DNA-dependent protein kinases and mismatch repair in cancer cells. Moreover, DHA enhanced the efficacy of anticancer drugs by increasing drug uptake and suppressing survival pathways in cancer cells. In this review, DHA-induced oxidative DNA damage, apoptotic signaling, and enhancement of chemosensitivity in cancer cells will be discussed based on recent studies.
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Lei Q, Ba S, Zhang H, Wei Y, Lee JY, Li T. Enrichment of omega-3 fatty acids in cod liver oil via alternate solvent winterization and enzymatic interesterification. Food Chem 2016; 199:364-71. [DOI: 10.1016/j.foodchem.2015.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 11/21/2015] [Accepted: 12/01/2015] [Indexed: 10/22/2022]
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Shahidi F, Ambigaipalan P. Beverages Fortified with Omega-3 Fatty Acids, Dietary Fiber, Minerals, and Vitamins. HANDBOOK OF FUNCTIONAL BEVERAGES AND HUMAN HEALTH 2016. [DOI: 10.1201/b19490-69] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Omega-3 Fatty Acids and Cancer Cell Cytotoxicity: Implications for Multi-Targeted Cancer Therapy. J Clin Med 2016; 5:jcm5020015. [PMID: 26821053 PMCID: PMC4773771 DOI: 10.3390/jcm5020015] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/15/2016] [Accepted: 01/19/2016] [Indexed: 12/24/2022] Open
Abstract
Cancer is a major disease worldwide. Despite progress in cancer therapy, conventional cytotoxic therapies lead to unsatisfactory long-term survival, mainly related to development of drug resistance by tumor cells and toxicity towards normal cells. n-3 polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), can exert anti-neoplastic activity by inducing apoptotic cell death in human cancer cells either alone or in combination with conventional therapies. Indeed, n-3 PUFAs potentially increase the sensitivity of tumor cells to conventional therapies, possibly improving their efficacy especially against cancers resistant to treatment. Moreover, in contrast to traditional therapies, n-3 PUFAs appear to cause selective cytotoxicity towards cancer cells with little or no toxicity on normal cells. This review focuses on studies investigating the cytotoxic activity of n-3 PUFAs against cancer cells via apoptosis, analyzing the molecular mechanisms underlying this effective and selective activity. Here, we highlight the multiple molecules potentially targeted by n-3 PUFAs to trigger cancer cell apoptosis. This analysis can allow a better comprehension of the potential cytotoxic therapeutic role of n-3 PUFAs against cancer, providing specific information and support to design future pre-clinical and clinical studies for a better use of n-3 PUFAs in cancer therapy, mainly combinational therapy.
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Comba A, Almada LL, Tolosa EJ, Iguchi E, Marks DL, Vara Messler M, Silva R, Fernandez-Barrena MG, Enriquez-Hesles E, Vrabel AL, Botta B, Di Marcotulio L, Ellenrieder V, Eynard AR, Pasqualini ME, Fernandez-Zapico ME. Nuclear Factor of Activated T Cells-dependent Down-regulation of the Transcription Factor Glioma-associated Protein 1 (GLI1) Underlies the Growth Inhibitory Properties of Arachidonic Acid. J Biol Chem 2015; 291:1933-1947. [PMID: 26601952 DOI: 10.1074/jbc.m115.691972] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 12/11/2022] Open
Abstract
Numerous reports have demonstrated a tumor inhibitory effect of polyunsaturated fatty acids (PUFAs). However, the molecular mechanisms modulating this phenomenon are in part poorly understood. Here, we provide evidence of a novel antitumoral mechanism of the PUFA arachidonic acid (AA). In vivo and in vitro experiments showed that AA treatment decreased tumor growth and metastasis and increased apoptosis. Molecular analysis of this effect showed significantly reduced expression of a subset of antiapoptotic proteins, including BCL2, BFL1/A1, and 4-1BB, in AA-treated cells. We demonstrated that down-regulation of the transcription factor glioma-associated protein 1 (GLI1) in AA-treated cells is the underlying mechanism controlling BCL2, BFL1/A1, and 4-1BB expression. Using luciferase reporters, chromatin immunoprecipitation, and expression studies, we found that GLI1 binds to the promoter of these antiapoptotic molecules and regulates their expression and promoter activity. We provide evidence that AA-induced apoptosis and down-regulation of antiapoptotic genes can be inhibited by overexpressing GLI1 in AA-sensitive cells. Conversely, inhibition of GLI1 mimics AA treatments, leading to decreased tumor growth, cell viability, and expression of antiapoptotic molecules. Further characterization showed that AA represses GLI1 expression by stimulating nuclear translocation of NFATc1, which then binds the GLI1 promoter and represses its transcription. AA was shown to increase reactive oxygen species. Treatment with antioxidants impaired the AA-induced apoptosis and down-regulation of GLI1 and NFATc1 activation, indicating that NFATc1 activation and GLI1 repression require the generation of reactive oxygen species. Collectively, these results define a novel mechanism underlying AA antitumoral functions that may serve as a foundation for future PUFA-based therapeutic approaches.
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Affiliation(s)
- Andrea Comba
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905,; Instituto de Investigaciones en Ciencias de la Salud, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Médicas-Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Luciana L Almada
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - Ezequiel J Tolosa
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - Eriko Iguchi
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - David L Marks
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - Marianela Vara Messler
- Instituto de Investigaciones en Ciencias de la Salud, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Médicas-Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Renata Silva
- Instituto de Investigaciones en Ciencias de la Salud, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Médicas-Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Maite G Fernandez-Barrena
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905,.
| | - Elisa Enriquez-Hesles
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - Anne L Vrabel
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
| | - Bruno Botta
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza University, Center for Life Nano Science at Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy
| | - Lucia Di Marcotulio
- Department of Molecular Medicine, Sapienza University, Pasteur Institute/Cenci-Bolognetti Foundation, 00161 Rome, Italy, and
| | - Volker Ellenrieder
- Gastroenterology and Gastrointestinal Oncology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Aldo R Eynard
- Instituto de Investigaciones en Ciencias de la Salud, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Médicas-Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Maria E Pasqualini
- Instituto de Investigaciones en Ciencias de la Salud, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Médicas-Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Martin E Fernandez-Zapico
- From the Schulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, Minnesota 55905
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Increased dietary levels of α-linoleic acid inhibit mammary tumor growth and metastasis. Eur J Nutr 2015; 56:509-519. [DOI: 10.1007/s00394-015-1096-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 11/02/2015] [Indexed: 12/31/2022]
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Tamma SM, Shorter B, Toh KL, Moldwin R, Gordon B. Influence of polyunsaturated fatty acids on urologic inflammation. Int Urol Nephrol 2015; 47:1753-61. [DOI: 10.1007/s11255-015-1108-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/03/2015] [Indexed: 01/03/2023]
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Schönenberger MJ, Kovacs WJ. Hypoxia signaling pathways: modulators of oxygen-related organelles. Front Cell Dev Biol 2015; 3:42. [PMID: 26258123 PMCID: PMC4508581 DOI: 10.3389/fcell.2015.00042] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 06/15/2015] [Indexed: 01/09/2023] Open
Abstract
Oxygen (O2) is an essential substrate in cellular metabolism, bioenergetics, and signaling and as such linked to the survival and normal function of all metazoans. Low O2 tension (hypoxia) is a fundamental feature of physiological processes as well as pathophysiological conditions such as cancer and ischemic diseases. Central to the molecular mechanisms underlying O2 homeostasis are the hypoxia-inducible factors-1 and -2 alpha (HIF-1α and EPAS1/HIF-2α) that function as master regulators of the adaptive response to hypoxia. HIF-induced genes promote characteristic tumor behaviors, including angiogenesis and metabolic reprogramming. The aim of this review is to critically explore current knowledge of how HIF-α signaling regulates the abundance and function of major O2-consuming organelles. Abundant evidence suggests key roles for HIF-1α in the regulation of mitochondrial homeostasis. An essential adaptation to sustained hypoxia is repression of mitochondrial respiration and induction of glycolysis. HIF-1α activates several genes that trigger mitophagy and represses regulators of mitochondrial biogenesis. Several lines of evidence point to a strong relationship between hypoxia, the accumulation of misfolded proteins in the endoplasmic reticulum, and activation of the unfolded protein response. Surprisingly, although peroxisomes depend highly on molecular O2 for their function, there has been no evidence linking HIF signaling to peroxisomes. We discuss our recent findings that establish HIF-2α as a negative regulator of peroxisome abundance and suggest a mechanism by which cells attune peroxisomal function with O2 availability. HIF-2α activation augments peroxisome turnover by pexophagy and thereby changes lipid composition reminiscent of peroxisomal disorders. We discuss potential mechanisms by which HIF-2α might trigger pexophagy and place special emphasis on the potential pathological implications of HIF-2α-mediated pexophagy for human health.
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Affiliation(s)
- Miriam J Schönenberger
- Department of Biology, Institute of Molecular Health Sciences ETH Zurich, Zurich, Switzerland
| | - Werner J Kovacs
- Department of Biology, Institute of Molecular Health Sciences ETH Zurich, Zurich, Switzerland
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Calder PC. Functional Roles of Fatty Acids and Their Effects on Human Health. JPEN J Parenter Enteral Nutr 2015; 39:18S-32S. [PMID: 26177664 DOI: 10.1177/0148607115595980] [Citation(s) in RCA: 532] [Impact Index Per Article: 59.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 06/03/2015] [Indexed: 12/18/2022]
Abstract
A variety of fatty acids exists in the diet of humans, in the bloodstream of humans, and in cells and tissues of humans. Fatty acids are energy sources and membrane constituents. They have biological activities that act to influence cell and tissue metabolism, function, and responsiveness to hormonal and other signals. The biological activities may be grouped as regulation of membrane structure and function; regulation of intracellular signaling pathways, transcription factor activity, and gene expression; and regulation of the production of bioactive lipid mediators. Through these effects, fatty acids influence health, well-being, and disease risk. The effects of saturated, cis monounsaturated, ω-6 and ω-3 polyunsaturated, and trans fatty acids are discussed. Although traditionally most interest in the health impact of fatty acids related to cardiovascular disease, it is now clear that fatty acids influence a range of other diseases, including metabolic diseases such as type 2 diabetes, inflammatory diseases, and cancer. Scientists, regulators, and communicators have described the biological effects and the health impacts of fatty acids according to fatty acid class. However, it is now obvious that within any fatty acid class, different members have different actions and effects. Thus, it would seem more appropriate to describe biological effects and health impacts of individual named fatty acids, although it is recognized that this would be a challenge when communicating outside of an academic environment (eg, to consumers).
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Affiliation(s)
- Philip C Calder
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom National Institute of Health Research Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton General Hospital, Southampton, United Kingdom Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Gu Z, Shan K, Chen H, Chen YQ. n-3 Polyunsaturated Fatty Acids and their Role in Cancer Chemoprevention. ACTA ACUST UNITED AC 2015; 1:283-294. [PMID: 26457243 DOI: 10.1007/s40495-015-0043-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polyunsaturated fatty acids (PUFAs), including omega-3 (n-3) and omega-6 (n-6) PUFAs, are essential for human health. Recent research shows n-3 PUFAs and their mediators can inhibit inflammation, angiogenesis and cancer via multiple mechanisms, including reduced release of n-6 fatty acid arachidonic acid from cell membranes, inhibition of enzymatic activities, and direct competition with arachidonic acid for enzymatic conversions. In this review, we discuss inflammation-related cancer, anti-inflammatory effects of n-3 PUFA lipid mediators, antineoplastic activities of n-3 PUFA in vitro and in vivo, and present an update on recent human trials.
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Affiliation(s)
- Zhennan Gu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, P.R. China ; The Synergistic Innovation Center for Food Safety and Nutrition, Wuxi 214122, P.R. China ; Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
| | - Kai Shan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, P.R. China ; The Synergistic Innovation Center for Food Safety and Nutrition, Wuxi 214122, P.R. China
| | - Haiqin Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, P.R. China ; The Synergistic Innovation Center for Food Safety and Nutrition, Wuxi 214122, P.R. China
| | - Yong Q Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, P.R. China ; The Synergistic Innovation Center for Food Safety and Nutrition, Wuxi 214122, P.R. China ; Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
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Affiliation(s)
- Philip C. Calder
- Human Development and Health Academic Unit, Faculty of Medicine; University of Southampton; Southampton United Kingdom
- NIHR Southampton Biomedical Research Centre; University Hospital Southampton NHS Foundation Trust and University of Southampton; Southampton United Kingdom
- Department of Biological Sciences; Faculty of Science, King Abdulaziz University; Jeddah Saudi Arabia
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38
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Zheng H, Tang H, Liu M, He M, Lai P, Dong H, Lin J, Jia C, Zhong M, Dai Y, Bai X, Wang L. Inhibition of Endometrial Cancer by n-3 Polyunsaturated Fatty Acids in Preclinical Models. Cancer Prev Res (Phila) 2014; 7:824-34. [DOI: 10.1158/1940-6207.capr-13-0378-t] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Model CS, Gomes LM, Scaini G, Ferreira GK, Gonçalves CL, Rezin GT, Steckert AV, Valvassori SS, Varela RB, Quevedo J, Streck EL. Omega-3 fatty acids alter behavioral and oxidative stress parameters in animals subjected to fenproporex administration. Metab Brain Dis 2014; 29:185-92. [PMID: 24385143 DOI: 10.1007/s11011-013-9473-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 12/13/2013] [Indexed: 12/30/2022]
Abstract
Studies have consistently reported the participation of oxidative stress in bipolar disorder (BD). Evidences indicate that omega-3 (ω3) fatty acids play several important roles in brain development and functioning. Moreover, preclinical and clinical evidence suggests roles for ω3 fatty acids in BD. Considering these evidences, the present study aimed to investigate the effects of ω3 fatty acids on locomotor behavior and oxidative stress parameters (TBARS and protein carbonyl content) in brain of rats subjected to an animal model of mania induced by fenproporex. The fenproporex treatment increased locomotor behavior in saline-treated rats under reversion and prevention model, and ω3 fatty acids prevented fenproporex-related hyperactivity. Moreover, fenproporex increased protein carbonyls in the prefrontal cortex and cerebral cortex, and the administration of ω3 fatty acids reversed this effect. Lipid peroxidation products also are increased in prefrontal cortex, striatum, hippocampus and cerebral after fenproporex administration, but ω3 fatty acids reversed this damage only in the hippocampus. On the other hand, in the prevention model, fenproporex increased carbonyl content only in the cerebral cortex, and administration of ω3 fatty acids prevented this damage. Additionally, the administration of fenproporex resulted in a marked increased of TBARS in the prefrontal cortex, hippocampus, striatum and cerebral cortex, and prevent this damage in the prefrontal cortex, hippocampus and striatum. In conclusion, we are able to demonstrate that fenproporex-induced hyperlocomotion and damage through oxidative stress were prevented by ω3 fatty acids. Thus, the ω3 fatty acids may be important adjuvant therapy of bipolar disorder.
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Affiliation(s)
- Camila S Model
- Laboratório de Bioenergética, Programa de Pós-graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
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Wang S, Hannafon BN, Wolf RF, Zhou J, Avery JE, Wu J, Lind SE, Ding WQ. Characterization of docosahexaenoic acid (DHA)-induced heme oxygenase-1 (HO-1) expression in human cancer cells: the importance of enhanced BTB and CNC homology 1 (Bach1) degradation. J Nutr Biochem 2014; 25:515-25. [PMID: 24613086 DOI: 10.1016/j.jnutbio.2013.12.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 12/18/2013] [Accepted: 12/31/2013] [Indexed: 10/25/2022]
Abstract
The effect of docosahexaenoic acid (DHA) on heme oxygenase-1 (HO-1) expression in cancer cells has never been characterized. This study examines DHA-induced HO-1 expression in human cancer cell model systems. DHA enhanced HO-1 gene expression in a time- and concentration-dependent manner, with maximal induction at 21 h of treatment. This induction of HO-1 expression was confirmed in vivo using a xenograft nude mouse model fed a fish-oil-enriched diet. The increase in HO-1 gene transcription induced by DHA was significantly attenuated by the antioxidant N-acetyl cysteine, suggesting the involvement of oxidative stress. This was supported by direct measurement of lipid peroxide levels after DHA treatment. Using a human HO-1 gene promoter reporter construct, we identified two antioxidant response elements (AREs) that mediate the DHA-induced increase in HO-1 gene transcription. Knockdown of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) expression compromised the DHA-induced increase in HO-1 gene transcription, indicating the importance of the Nrf2 pathway in this event. However, the nuclear protein levels of Nrf2 remained unchanged upon DHA treatment. Further studies demonstrated that DHA reduces nuclear Bach1 protein expression by promoting its degradation and attenuates Bach1 binding to the AREs in the HO-1 gene promoter. In contrast, DHA enhanced Nrf2 binding to the AREs without affecting nuclear Nrf2 expression levels, indicating a new cellular mechanism that mediates DHA's induction of HO-1 gene transcription. To our knowledge, this is the first characterization of DHA-induced HO-1 expression in human malignant cells.
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Affiliation(s)
- Shuai Wang
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 411A, Oklahoma City, OK 73104, USA
| | - Bethany N Hannafon
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 411A, Oklahoma City, OK 73104, USA
| | - Roman F Wolf
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 411A, Oklahoma City, OK 73104, USA
| | - Jundong Zhou
- Department of Radio-Oncology, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, P. R. China
| | - Jori E Avery
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 411A, Oklahoma City, OK 73104, USA
| | - Jinchang Wu
- Department of Radio-Oncology, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, P. R. China
| | - Stuart E Lind
- Departments of Pathology and Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - Wei-Qun Ding
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 411A, Oklahoma City, OK 73104, USA.
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Lee EJ, Yun UJ, Koo KH, Sung JY, Shim J, Ye SK, Hong KM, Kim YN. Down-regulation of lipid raft-associated onco-proteins via cholesterol-dependent lipid raft internalization in docosahexaenoic acid-induced apoptosis. BIOCHIMICA ET BIOPHYSICA ACTA 2014; 1841:190-203. [PMID: 24120917 DOI: 10.1016/j.bbalip.2013.10.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 10/26/2022]
Abstract
Lipid rafts, plasma membrane microdomains, are important for cell survival signaling and cholesterol is a critical lipid component for lipid raft integrity and function. DHA is known to have poor affinity for cholesterol and it influences lipid rafts. Here, we investigated a mechanism underlying the anti-cancer effects of DHA using a human breast cancer cell line, MDA-MB-231. We found that DHA decreased cell surface levels of lipid rafts via their internalization, which was partially reversed by cholesterol addition. With DHA treatment, caveolin-1, a marker for rafts, and EGFR were colocalized with LAMP-1, a lysosomal marker, in a cholesterol-dependent manner, indicating that DHA induces raft fusion with lysosomes. DHA not only displaced several raft-associated onco-proteins, including EGFR, Hsp90, Akt, and Src, from the rafts but also decreased total levels of those proteins via multiple pathways, including the proteasomal and lysosomal pathways, thereby decreasing their activities. Hsp90 overexpression maintained its client proteins, EGFR and Akt, and attenuated DHA-induced cell death. In addition, overexpression of Akt or constitutively active Akt attenuated DHA-induced apoptosis. All these data indicate that the anti-proliferative effect of DHA is mediated by targeting of lipid rafts via decreasing cell surface lipid rafts by their internalization, thereby decreasing raft-associated onco-proteins via proteasomal and lysosomal pathways and decreasing Hsp90 chaperone function.
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Affiliation(s)
- Eun Jeong Lee
- Comparative Biomedicine Research Branch, Division of Cancer Biology, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Republic of Korea
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The omega-3 polyunsaturated fatty acid DHA induces simultaneous apoptosis and autophagy via mitochondrial ROS-mediated Akt-mTOR signaling in prostate cancer cells expressing mutant p53. BIOMED RESEARCH INTERNATIONAL 2013; 2013:568671. [PMID: 23841076 PMCID: PMC3691929 DOI: 10.1155/2013/568671] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/29/2013] [Indexed: 11/17/2022]
Abstract
Docosahexaenoic acid (DHA) induces autophagy-associated apoptotic cell death in wild-type p53 cancer cells via regulation of p53. The present study investigated the effects of DHA on PC3 and DU145 prostate cancer cell lines harboring mutant p53. Results show that, in addition to apoptosis, DHA increased the expression levels of lipidated form LC3B and potently stimulated the autophagic flux, suggesting that DHA induces both autophagy and apoptosis in cancer cells expressing mutant p53. DHA led to the generation of mitochondrial reactive oxygen species (ROS), as shown by the mitochondrial ROS-specific probe mitoSOX. Similarly, pretreatment with the antioxidant N-acetyl-cysteine (NAC) markedly inhibited both the autophagy and the apoptosis triggered by DHA, indicating that mitochondrial ROS mediate the cytotoxicity of DHA in mutant p53 cells. Further, DHA reduced the levels of phospho-Akt and phospho-mTOR in a concentration-dependent manner, while NAC almost completely blocked that effect. Collectively, these findings present a novel mechanism of ROS-regulated apoptosis and autophagy that involves Akt-mTOR signaling in prostate cancer cells with mutant p53 exposed to DHA.
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Stephenson JA, Al-Taan O, Arshad A, West AL, Calder PC, Morgan B, Metcalfe MS, Dennison AR. Unsaturated fatty acids differ between hepatic colorectal metastases and liver tissue without tumour in humans: results from a randomised controlled trial of intravenous eicosapentaenoic and docosahexaenoic acids. Prostaglandins Leukot Essent Fatty Acids 2013; 88:405-10. [PMID: 23647811 DOI: 10.1016/j.plefa.2013.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/28/2013] [Accepted: 04/02/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Mediators derived from the n-6 polyunsaturated fatty acid (PUFA) arachidonic acid oxidation have been shown to have tumour promoting effects in experimental models, while n-3 PUFAs are thought to be protective. Here we report fatty acid concentrations in hepatic colorectal metastases compared to liver tissue without tumour in humans. METHODS Twenty patients with colorectal liver metastasis were randomized to receive a 72 h infusion of parenteral nutrition with or without n-3 PUFAs. Histological samples from liver metastases and liver tissue without tumour were obtained from 15 patients at the time of their subsequent liver resection (mean 8 days (range 4-12) post-infusion) and the fatty acid composition determined by gas chromatography. RESULTS There were no significant differences in fatty acid composition between the two intervention groups. When data from all patients were combined, liver tissue without tumour had a higher content of both n-3 and n-6 PUFAs and a lower content of oleic acid and total n-9 fatty acids compared with tumour tissue (p<0.0001, 0.0002,<0.0001 and <0.0001, respectively). The n-6/n-3 PUFA ratio was found to be higher in tumour tissue than tissue without tumour (p<0.0001). CONCLUSIONS Hepatic colorectal adenocarcinoma metastases have a higher content of n-9 fatty acids and a lower content of n-6 and n-3 PUFAs than liver tissue without tumour.
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Affiliation(s)
- James A Stephenson
- Department of Imaging, University Hospitals of Leicester NHS Trust, Gwendolen Road, Leicester LE5 4PW, United Kingdom.
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Dietary ω -3 polyunsaturated fatty acid DHA: a potential adjuvant in the treatment of cancer. BIOMED RESEARCH INTERNATIONAL 2013; 2013:310186. [PMID: 23762838 PMCID: PMC3676987 DOI: 10.1155/2013/310186] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 05/08/2013] [Indexed: 02/03/2023]
Abstract
ω-3 Polyunsaturated fatty acids (PUFAs), mainly present in fish oil, are part of the human diet. Among PUFAs, docosahexaenoic acid (DHA) has received particular attention for its anti-inflammatory, antiproliferative, proapoptotic, antiangiogenetic, anti-invasion, and antimetastatic properties. These data suggest that DHA can exert antitumor activity potentially representing an effective adjuvant in cancer chemotherapy. This review is focused on current knowledge supporting the potential use of DHA for the enhancement of the efficacy of anticancer treatments in relation to its ability to enhance the uptake of anticancer drugs, regulate the oxidative status of tumor cells, and inhibit tumor cell invasion and metastasis.
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Stephenson JA, Al-Taan O, Arshad A, Morgan B, Metcalfe MS, Dennison AR. The multifaceted effects of omega-3 polyunsaturated Fatty acids on the hallmarks of cancer. J Lipids 2013; 2013:261247. [PMID: 23762563 PMCID: PMC3671553 DOI: 10.1155/2013/261247] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 03/26/2013] [Accepted: 04/05/2013] [Indexed: 02/06/2023] Open
Abstract
Omega-3 polyunsaturated fatty acids, in particular eicosapentaenoic acid, and docosahexaenoic acid have been shown to have multiple beneficial antitumour actions that affect the essential alterations that dictate malignant growth. In this review we explore the putative mechanisms of action of omega-3 polyunsaturated fatty acid in cancer protection in relation to self-sufficiency in growth signals, insensitivity to growth-inhibitory signals, apoptosis, limitless replicative potential, sustained angiogenesis, and tissue invasion, and how these will hopefully translate from bench to bedside.
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Affiliation(s)
- J. A. Stephenson
- Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester Royal Infirmary, Leicester LE1 5WW, UK
- Department of Imaging, Leicester Royal Infirmary, Leicester LE1 5WW, UK
| | - O. Al-Taan
- Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester Royal Infirmary, Leicester LE1 5WW, UK
- Department of Surgery, University Hospitals of Leicester, Leicester General Hospital, Leicester LE5 4PW, UK
| | - A. Arshad
- Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester Royal Infirmary, Leicester LE1 5WW, UK
- Department of Surgery, University Hospitals of Leicester, Leicester General Hospital, Leicester LE5 4PW, UK
| | - B. Morgan
- Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester Royal Infirmary, Leicester LE1 5WW, UK
- Department of Imaging, Leicester Royal Infirmary, Leicester LE1 5WW, UK
| | - M. S. Metcalfe
- Department of Surgery, University Hospitals of Leicester, Leicester General Hospital, Leicester LE5 4PW, UK
| | - A. R. Dennison
- Department of Surgery, University Hospitals of Leicester, Leicester General Hospital, Leicester LE5 4PW, UK
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Gapeyev AB, Kulagina TP, Aripovsky AV. Exposure of tumor-bearing mice to extremely high-frequency electromagnetic radiation modifies the composition of fatty acids in thymocytes and tumor tissue. Int J Radiat Biol 2013; 89:602-10. [DOI: 10.3109/09553002.2013.784426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Becerra SP, Notario V. The effects of PEDF on cancer biology: mechanisms of action and therapeutic potential. Nat Rev Cancer 2013; 13:258-71. [PMID: 23486238 PMCID: PMC3707632 DOI: 10.1038/nrc3484] [Citation(s) in RCA: 162] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The potent actions of pigment epithelium-derived factor (PEDF) on tumour-associated cells, and its extracellular localization and secretion, stimulated research on this multifunctional serpin. Such studies have identified several PEDF receptors and downstream signalling pathways. Known cellular PEDF responses have expanded from the initial discovery that PEDF induces retinoblastoma cell differentiation to its anti-angiogenic, antitumorigenic and antimetastatic properties. Although the diversity of PEDF activities seems to be complex, they are consistent with the varied mechanisms that regulate this multimodal factor. If PEDF is to be used for cancer management, a deeper appreciation of its many functions and mechanisms of action is needed.
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Affiliation(s)
- S Patricia Becerra
- National Eye Institute, US National Institutes of Health, Bethesda, Maryland, USA.
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Rovito D, Giordano C, Vizza D, Plastina P, Barone I, Casaburi I, Lanzino M, De Amicis F, Sisci D, Mauro L, Aquila S, Catalano S, Bonofiglio D, Andò S. Omega-3 PUFA ethanolamides DHEA and EPEA induce autophagy through PPARγ activation in MCF-7 breast cancer cells. J Cell Physiol 2013; 228:1314-22. [DOI: 10.1002/jcp.24288] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 11/08/2012] [Indexed: 11/09/2022]
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Arachidonic acid supplementation does not affect N-methyl- N-nitrosourea-induced renal preneoplastic lesions in young Lewis rats. Oncol Lett 2013; 5:1112-1116. [PMID: 23599748 PMCID: PMC3629268 DOI: 10.3892/ol.2013.1162] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 01/17/2013] [Indexed: 12/19/2022] Open
Abstract
Arachidonic acid (AA) is naturally found in human breast milk. AA, together with docosahexaenoic acid, is commonly added as a functional food ingredient to commercial infant formula worldwide, in accordance with the international standards of Codex Alimentarius. However, few studies of the possible renal carcinogenic effects of AA supplementation during neonatal life have been performed. The effect of dietary AA supplementation in dams during gestation and lactation was investigated on N-methyl-N-nitrosourea (MNU)-induced preneoplastic lesions in the kidneys of young Lewis rats. Dams were fed a 2.0% AA diet or a basal diet (<0.01% AA). At birth (postnatal day 0), male and female pups received a single intraperitoneal injection of 35 mg/kg MNU or vehicle. Renal morphology was examined after 7, 14, 21, 28 and 60 days. Histopathologically, renal preneoplastic lesions, such as nephroblastomatosis and mesenchymal cell proliferation, were found on day 60 in both the MNU-treated groups. There was no significant difference in lesion incidence of 38% in the basal diet group and 31% in the AA diet group. In conclusion, an AA-rich diet for dams during gestation and lactation does not modify MNU-induced renal preneoplastic lesions in their offspring.
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