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Gu Q, Qi A, Wang N, Zhou Z, Zhou X. Macrophage dynamics in prostate cancer: Molecular to therapeutic insights. Biomed Pharmacother 2024; 177:117002. [PMID: 38960836 DOI: 10.1016/j.biopha.2024.117002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/08/2024] [Accepted: 06/17/2024] [Indexed: 07/05/2024] Open
Abstract
This review provides an in-depth examination of the role that tumor-associated macrophages (TAMs) play in the progression of prostate cancer (PCa), with a particular focus on the factors influencing the polarization of M1 and M2 macrophages and the implications of targeting these cells for cancer progression. The development and prognosis of PCa are significantly influenced by the behavior of macrophages within the tumor microenvironment. M1 macrophages typically exhibit anti-tumor properties by secreting pro-inflammatory cytokines such as interferon-gamma (IFN-γ) and tumor necrosis factor-alpha (TNF-α), thereby enhancing the immune response. Conversely, M2 macrophages contribute to tumor cell migration and invasion through the production of factors like arginase-1 (Arg1) and interleukin-10 (IL-10). This review not only explores the diverse factors that affect macrophage polarization but also delves into the potential therapeutic strategies targeting macrophage polarization, including the critical roles of non-coding RNA and exosomes in regulating this process. The polarization state of macrophages is highlighted as a key determinant in PCa progression, offering a novel perspective for clinical treatment. Future research should concentrate on gaining a deeper understanding of the molecular mechanisms underlying macrophage polarization and on developing effective targeted therapeutic strategies. The exploration of the potential of combination therapies to improve treatment efficacy is also emphasized. By emphasizing the importance of macrophages as a therapeutic target in PCa, this review aims to provide valuable insights and research directions for clinicians and researchers.
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Affiliation(s)
- Qiannan Gu
- China Pharmaceutical University, School of Basic Medicine and Clinical Pharmacy, Nanjing, Jiangsu 210009, China
| | - Anning Qi
- Medical Laboratory, Liuhe People's Hospital of Jiangsu Province, Nanjing, Jiangsu 211500, China
| | - Ne Wang
- Jiangning Hospital Tiandi New City Branch, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, Jiangsu Province 211198, China
| | - Zhenxian Zhou
- Nanjing Second People's Hospital, Jiangsu Province 211103, China
| | - Xiaohui Zhou
- China Pharmaceutical University, School of Basic Medicine and Clinical Pharmacy, Nanjing, Jiangsu 210009, China; Jiangning Outpatient Department of China Pharmaceutical University, Nanjing 211198, China.
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Chen Y, Lin PH, Freedland SJ, Chi JT. Metabolic Response to Androgen Deprivation Therapy of Prostate Cancer. Cancers (Basel) 2024; 16:1991. [PMID: 38893112 PMCID: PMC11171316 DOI: 10.3390/cancers16111991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Prostate cancer (PC) stands as the most frequently diagnosed non-skin cancer and ranks as the second highest cause of cancer-related deaths among men in the United States. For those facing non-metastatic PC necessitating intervention, solely local treatments may not suffice, leading to a possible transition toward systemic therapies, including androgen deprivation therapy (ADT), chemotherapy, and therapies targeting androgen. Yet, these systemic treatments often bring about considerable adverse effects. Additionally, it is observed that overweight men are at a higher risk of developing aggressive forms of PC, advancing to metastatic stages, and succumbing to the disease. Consequently, there is a pressing demand for new treatment options that carry fewer side effects and enhance the current standard treatments, particularly for the majority of American men who are overweight or obese. In this article, we will review the metabolic response to ADT and how lifestyle modulation can mitigate these ADT-associated metabolic responses with a particular focus on the two clinical trials, Carbohydrate and Prostate Study 1 (CAPS1) and Carbohydrate and Prostate Study 2 (CAPS2), which tested the effects of low-carbohydrate diets on the metabolic side effects of ADT and PC progression, respectively. Furthermore, we will summarize the findings of serum metabolomic studies to elucidate the potential mechanisms by which ADT and low-carbohydrate diets can affect the metabolic response to mitigate the metabolic side effects while maximizing therapeutic efficacy.
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Affiliation(s)
- Yubin Chen
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27708, USA;
- Center of Applied Genomic Technologies, Duke University, Durham, NC 27708, USA
| | - Pao-Hwa Lin
- Department of Medicine, Duke University, Durham, NC 27708, USA;
| | - Stephen J. Freedland
- Center for Integrated Research in Cancer and Lifestyle, Cedars-Sinai, Los Angeles, CA 90048, USA;
- Durham VA Medical Center, Durham, NC 27708, USA
| | - Jen-Tsan Chi
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27708, USA;
- Center of Applied Genomic Technologies, Duke University, Durham, NC 27708, USA
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Liang P, Henning SM, Grogan T, Elashoff D, Said J, Cohen P, Aronson WJ. Effect of omega-3 fatty acid diet on prostate cancer progression and cholesterol efflux in tumor-associated macrophages-dependence on GPR120. Prostate Cancer Prostatic Dis 2023:10.1038/s41391-023-00745-4. [PMID: 37872251 PMCID: PMC11035487 DOI: 10.1038/s41391-023-00745-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/09/2023] [Accepted: 10/13/2023] [Indexed: 10/25/2023]
Abstract
BACKGROUND Preclinical and clinical translational research supports the role of an ω-3 fatty acid diet for prostate cancer prevention and treatment. The anti-prostate cancer effects of an ω-3 diet require a functional host g-protein coupled receptor 120 (GPR120) but the underlying effects on the tumor microenvironment and host immune system are yet to be elucidated. METHODS Friend leukemia virus B (FVB) mice received bone marrow from green fluorescent protein (GFP) labeled GPR120 wild-type (WT) or knockout (KO) mice followed by implanting Myc-driven mouse prostate cancer (MycCap) allografts and feeding an ω-3 or ω-6 diet. Tumor associated immune cells were characterized by flow cytometry, and CD206+ tumor infiltrating M2-like macrophages were isolated for gene expression studies. MycCap prostate cancer cell conditioned medium (CM) was used to stimulate murine macrophage cells (RAW264.7) and bone marrow-derived (BMD) macrophages to study the effects of docosahexanoic acid (DHA, fish-derived ω-3 fatty acid) on M2 macrophage function and cholesterol metabolism. RESULTS The bone marrow transplantation study showed that an ω-3 as compared to an ω-6 diet inhibited MycCaP allograft tumor growth only in mice receiving GPR120 WT but not GPR120 KO bone marrow. In the ω-3 group, GPR120 WT BMD M2-like macrophages infiltrating the tumor were significantly reduced in number and gene expression of cholesterol transporters Abca1, Abca6, and Abcg1. RAW264.7 murine macrophages and BMDMs exposed to MycCaP cell CM had increased gene expression of cholesterol transporters, depleted cholesterol levels, and were converted to the M2 phenotype. These effects were inhibited by DHA through the GPR120 receptor. CONCLUSION Host bone marrow cells with functional GPR120 are essential for the anticancer effects of dietary ω-3 fatty acids, and a key target of the ω-3 diet are the M2-like CD206+ macrophages. Our preclinical findings provide rationale for clinical trials evaluating ω-3 fatty acids as a potential therapy for prostate cancer through inhibition of GPR120 functional M2-like macrophages.
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Affiliation(s)
- Pei Liang
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Susanne M Henning
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Tristan Grogan
- Department of Medicine Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - David Elashoff
- Department of Medicine Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Jonathan Said
- Department of Pathology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - William J Aronson
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
- VA Medical Center Greater Los Angeles Healthcare System, Los Angeles, CA, USA.
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Yu X, Tong H, Chen J, Tang C, Wang S, Si Y, Wang S, Tang Z. CircRNA MBOAT2 promotes intrahepatic cholangiocarcinoma progression and lipid metabolism reprogramming by stabilizing PTBP1 to facilitate FASN mRNA cytoplasmic export. Cell Death Dis 2023; 14:20. [PMID: 36635270 PMCID: PMC9837196 DOI: 10.1038/s41419-022-05540-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 12/18/2022] [Accepted: 12/22/2022] [Indexed: 01/14/2023]
Abstract
The carcinogenic role of FASN by regulating lipid metabolism reprogramming has been well-established in multiple tumors. However, whether mechanisms during intrahepatic cholangiocarcinoma (ICC) progression, such as circRNAs, regulate FASN expression remains unknown. Here we demonstrate a lipid metabolism-related circRNA, circMBOAT2 (hsa_circ_0007334 in circBase), frequently upregulated in ICC tissues, and positively correlated with ICC malignant features. CircMBOAT2 knockdown inhibits the growth and metastasis of ICC cells. Mechanistically, circMBOAT2 combines with PTBP1 and protects PTBP1 from ubiquitin/proteasome-dependent degradation, impairing the function of PTBP1 to transfer FASN mRNA from the nucleus to the cytoplasm. Moreover, circMBOAT2 and FASN have the same effect on fatty acid profile, unsaturated fatty acids instead of saturated fatty acids are primarily regulated and associated with malignant behaviors of ICC cells. The levels of lipid peroxidation and ROS were significantly higher when FASN was knocked down and recovered when circMBOAT2 was overexpressed. Our results identified that circMBOAT2 was upregulated in ICC and promoted progression by stabilizing PTBP1 to facilitate FASN mRNA cytoplasmic export, which altered lipid metabolic profile and regulated redox homeostasis in ICC, suggesting that circMBOAT2 may serve as an available therapeutic target for ICC with active lipid metabolism.
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Affiliation(s)
- Xiaopeng Yu
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Huanjun Tong
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Jialu Chen
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Chenwei Tang
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Shuqing Wang
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Yu Si
- Department of Blood Transfusion, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Shouhua Wang
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
- Shanghai Key Laboratory of Biliary Tract Disease Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Zhaohui Tang
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
- Shanghai Key Laboratory of Biliary Tract Disease Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
- Department of Blood Transfusion, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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Amaro GM, da Silva ADT, Tamarindo GH, Lamas CDA, Taboga SR, Cagnon VHA, Góes RM. Differential effects of omega-3 PUFAS on tumor progression at early and advanced stages in TRAMP mice. Prostate 2022; 82:1491-1504. [PMID: 36039485 DOI: 10.1002/pros.24421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 06/09/2022] [Accepted: 07/13/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND In vitro studies evidenced antitumor effects of omega-3 polyunsaturated fatty acids ([n-3] PUFAs), but their effects on prostate cancer (PCa) remain controversial in epidemiological studies. Here we investigated whether an (n-3) PUFA-enriched diet affects tumor progression in transgenic adenocarcinoma of the mouse prostate (TRAMP), at early (12 weeks age) and advanced stages (20 weeks age). METHODS TRAMP mice were fed with standard rodent diet (C12, C20) or (n-3) PUFA-enriched diet containing 10% fish oil (T12, T20). A group of 8 weeks age animals fed standard diet was also used for comparison (C8). The ventral prostate was processed for histopathological and immunohistochemical analyses and serum samples submitted to biochemical assays. RESULTS At early stages, (n-3) PUFA increased the frequency of normal epithelium (3.8-fold) and decreased the frequency of high-grade intraepithelial neoplasia (3.3-fold) and in situ carcinoma (1.9-fold) in the gland, maintaining prostate pathological status similar to C8 group. At advanced stages, 50% of the animals developed a large primary tumor in both C20 and T20, and tumor weight did not differ (C20: 2.2 ± 2.4; T20: 2.8 ± 2.9 g). The ventral prostate of T12 and of T20 animals that did not develop primary tumors showed lower cell proliferation, tissue expressions of androgen (AR) and glucocorticoid (GR) receptors, than their respective controls. For these animals, (n-3) PUFA also avoided an increase in the number of T-lymphocytes, collagen fibers, and αSMA immunoreactivity, and preserved stromal gland microenvironment. (n-3) PUFA also lowered serum triglycerides and cholesterol, regulating the lipid metabolism of TRAMP mice. CONCLUSIONS (n-3) PUFAs had a protective effect at early stages of PCa, delaying tumor progression in TRAMP mice, in parallel with reductions in cell proliferation, AR, and GR and maintenance of the stromal compartment of the gland. However, (n-3) PUFAs did not prevent the development of primary tumors for the T20 group, reinforcing the need for further investigation at advanced stages of disease.
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Affiliation(s)
- Gustavo M Amaro
- Departament of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Alana D T da Silva
- Departament of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Guilherme H Tamarindo
- Department of Structural and Functional Biology, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Celina de A Lamas
- Department of Structural and Functional Biology, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Sebastião R Taboga
- Departament of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Valéria Helena Alves Cagnon
- Department of Structural and Functional Biology, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Rejane M Góes
- Departament of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
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6
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Effects of dietary omega-3 fatty acids on orthotopic prostate cancer progression, tumor associated macrophages, angiogenesis and T-cell activation-dependence on GPR120. Prostate Cancer Prostatic Dis 2022; 25:539-546. [PMID: 35075215 PMCID: PMC9308823 DOI: 10.1038/s41391-021-00440-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 08/02/2021] [Accepted: 08/09/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND The antiprostate cancer effects of dietary ω-3 fatty acids (FAs) were previously found to be dependent on host G-protein coupled receptor 120 (GPR120). Using an orthotopic tumor model and an ex-vivo model of bone marrow derived M2-like macrophages, we sought to determine if ω-3 FAs inhibit angiogenesis and activate T-cells, and if these effects are dependent on GPR120. METHODS Gausia luciferase labeled MycCaP prostate cancer cells (MycCaP-Gluc) were injected into the anterior prostate lobe of FVB mice. After established tumors were confirmed by blood luminescence, mice were fed an ω-3 or ω-6 diet. Five weeks after tumor injection, tumor weight, immune cell infiltration and markers of angiogenesis were determined. An ex-vivo co-culture model of bone marrow derived M2-like macrophages from wild-type or GPR120 knockout mice with MycCap prostate cancer cells was used to determine if docosahexanoic acid (DHA, ω-3 FA) inhibition of angiogenesis and T-cell activation is dependent on macrophage GPR120. RESULTS Feeding an ω-3 diet significantly reduced orthotopic MycCaP-Gluc tumor growth relative to an ω-6 diet. Tumors from the ω-3 group had decreased M2-like macrophage infiltration and decreased expression of angiogenesis factors. DHA significantly inhibited M2 macrophage-induced endothelial tube formation and reversed M2 macrophage-induced T-cell suppression, and these DHA effects were mediated, in part, by M2 macrophage GPR120. CONCLUSION Omega-3 FAs delayed orthotopic tumor growth, inhibited M2-like macrophage tumor infiltration, and inhibited M2-like macrophage-induced angiogenesis and T-cell suppression. Given the central role of M2-like macrophages in prostate cancer progression, GPR120-dependent ω-3 FA inhibition of M2-like macrophages may play an important role in prostate cancer therapeutics.
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Adachi Y. Effects of Fatty Acids on Proliferation of Cultured Wild-type and FABP5-KO Thymic Epithelial Cells. J UOEH 2022; 44:239-248. [PMID: 36089341 DOI: 10.7888/juoeh.44.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lipids including fatty acids (FAs), which are water-insoluble molecules, are not only a cellular energy source but also signaling molecules that induce and modulate the expression of various cellular functions. Fatty acid-binding proteins (FABP) bind FAs in the cytoplasm, and are thought to determine the cellular localization of FAs. In a previous observation, FABP5 was expressed in thymic epithelial cells (TEC) in the thymus and was influenced by FAs. Fatty acids have mostly inhibitory effects on various cell types, including cancer cells, but their effects on TEC have not been well investigated. In this study, we investigated the effects of long-chain FAs (LCFAs) and the involvement of FABP5 in cell proliferation using a serum-free primary culture system. The results showed that saturated fatty acids did not affect proliferation, but n-3 long-chain polyunsaturated FA (LCPUFA) reduced, n-6 LCPUFA increased, and retinoic acid strongly reduced the percentage of proliferating wild-type TEC. The proliferation of FABP5-KO TEC was more significantly affected by LCPUFA, suggesting that FABP5 is an important modulator of FA-mediated TEC proliferation. These observations may provide a basis for exploring the properties of TEC.
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Affiliation(s)
- Yasuhiro Adachi
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Japan
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Raphael JE, Danagogo O. Pilot Study on the Locoregional Demographics of Prostate Cancer in River State, Nigeria. Niger Med J 2021; 62:340-345. [PMID: 38736520 PMCID: PMC11087682 DOI: 10.60787/nmj-62-6-65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Abstract
Background The aetiology of prostate cancer is a subject of intense research and has been attributed to several risk factors. Geographical variations have also been observed with high incidence in western countries and rising rates in developing countries. This study aims to evaluate the locoregional distribution of histologically confirmed prostate cancer patients and discuss the risk factors for the observed variations according to their Local Government Areas (LGA) in Rivers State. Methodology This is a descriptive retrospective study on patients with histologically confirmed prostate cancer from three hospitals that take urology referrals over 10years. The patient's hospital records were obtained, and records of their ages, permanent place of residence, prostate biopsy histopathology reports, and Gleason's scores were extracted. These data were collated and analyzed using SPSS version 20. Results There were 278 patients managed over a 10year period with a mean age of 68.39years+_10.06. Prostate cancer was the commonest in the 60-69year age group (37.1%), followed by the 70-79year range. The high-risk, poorly differentiated cancer (Gleason 8-10; ISUP 4,5) was the commonest, followed by the intermediate-risk cancers (Gleason 7; ISUP 2,3). Port Harcourt (41.0%) and ObiaAkpo (36.0%) Local Government Areas (LGAs) in Port Harcourt City had the highest frequencies of prostate cancer. There was no relationship between age and Gleason's score in the men. Conclusion Prostate cancer appears more common in the LGAs in Port Harcourt City compared to the semi-urban and rural LGAs in Rivers State. High-grade cancers are more frequent both in rural and urban LGA. High Gleason score cancers appear more frequently in the metropolitan Port Harcourt City than rural LGAs.
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Affiliation(s)
- John E. Raphael
- Urology Division, Department of Surgery, University of Port Harcourt Teaching Hospital, Port Harcourt, Rivers State, Nigeria
| | - Okigbeye Danagogo
- Urology Division, Department of Surgery, University of Port Harcourt Teaching Hospital, Port Harcourt, Rivers State, Nigeria
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Liput KP, Lepczyński A, Ogłuszka M, Nawrocka A, Poławska E, Grzesiak A, Ślaska B, Pareek CS, Czarnik U, Pierzchała M. Effects of Dietary n-3 and n-6 Polyunsaturated Fatty Acids in Inflammation and Cancerogenesis. Int J Mol Sci 2021; 22:6965. [PMID: 34203461 PMCID: PMC8268933 DOI: 10.3390/ijms22136965] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/24/2021] [Accepted: 06/24/2021] [Indexed: 12/30/2022] Open
Abstract
The dietary recommendation encourages reducing saturated fatty acids (SFA) in diet and replacing them with polyunsaturated fatty acids (PUFAs) n-3 (omega-3) and n-6 (omega-6) to decrease the risk of metabolic disturbances. Consequently, excessive n-6 PUFAs content and high n-6/n-3 ratio are found in Western-type diet. The importance of a dietary n-6/n-3 ratio to prevent chronic diseases is linked with anti-inflammatory functions of linolenic acid (ALA, 18:3n-3) and longer-chain n-3 PUFAs. Thus, this review provides an overview of the role of oxylipins derived from n-3 PUFAs and oxylipins formed from n-6 PUFAs on inflammation. Evidence of PUFAs' role in carcinogenesis was also discussed. In vitro studies, animal cancer models and epidemiological studies demonstrate that these two PUFA groups have different effects on the cell growth, proliferation and progression of neoplastic lesions.
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Affiliation(s)
- Kamila P. Liput
- Department of Genomics and Biodiversity, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland; (K.P.L.); (M.O.); (A.N.); (E.P.)
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Adam Lepczyński
- Department of Physiology, Cytobiology and Proteomics, West Pomeranian University of Technology, ul. K. Janickiego 29, 71-270 Szczecin, Poland; (A.L.); (A.G.)
| | - Magdalena Ogłuszka
- Department of Genomics and Biodiversity, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland; (K.P.L.); (M.O.); (A.N.); (E.P.)
| | - Agata Nawrocka
- Department of Genomics and Biodiversity, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland; (K.P.L.); (M.O.); (A.N.); (E.P.)
- Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland
| | - Ewa Poławska
- Department of Genomics and Biodiversity, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland; (K.P.L.); (M.O.); (A.N.); (E.P.)
| | - Agata Grzesiak
- Department of Physiology, Cytobiology and Proteomics, West Pomeranian University of Technology, ul. K. Janickiego 29, 71-270 Szczecin, Poland; (A.L.); (A.G.)
| | - Brygida Ślaska
- Institute of Biological Bases of Animal Production, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland;
| | - Chandra S. Pareek
- Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, ul. J. Gagarina 7, 87-100 Toruń, Poland;
- Division of Functional Genomics in Biological and Biomedical Research, Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, ul. Wilenska 4, 87-100 Torun, Poland
| | - Urszula Czarnik
- Department of Pig Breeding, Faculty of Animal Bio-Engineering, University of Warmia and Mazury in Olsztyn, ul. M. Oczapowskiego 5, 10-719 Olsztyn, Poland;
| | - Mariusz Pierzchała
- Department of Genomics and Biodiversity, Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, ul. Postepu 36A, Jastrzebiec, 05-552 Magdalenka, Poland; (K.P.L.); (M.O.); (A.N.); (E.P.)
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Tamarindo GH, Góes RM. Docosahexaenoic acid differentially modulates the cell cycle and metabolism- related genes in tumor and pre-malignant prostate cells. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158766. [PMID: 32712248 DOI: 10.1016/j.bbalip.2020.158766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/13/2020] [Accepted: 07/19/2020] [Indexed: 12/11/2022]
Abstract
Prostate cancer (PCa) has different molecular features along progression, including androgen profile, which is associated to therapy inefficiency leading to more aggressive phenotype. Docosahexaenoic acid (DHA) has antiproliferative and pro-apoptotic properties in different cancers associated to cell metabolism modulation. The latter is of particular interest since metabolic reprogramming is one of PCa hallmarks, but is not clear how this occurs among disease progression. Therefore, we evaluated DHA antiproliferative potential in distinct androgenic backgrounds associated to metabolism modulation and androgen-regulated genes. For this purpose, pre-malignant PNT1A and tumor AR-positive 22rv1, and AR-negative PC3 cells were incubated with DHA at 100 μM-48 h. DHA reduced at least 26% cell number for all lineages due to S-phase decrease in AR-positive and G2/M arrest in AR-negative. Mitochondrial metabolic rate decreased in PNT1A (~38%) and increased in tumor cells (at least 40%). This was associated with ROS overproduction (1.6-fold PNT1A; 2.1 22rv1; 2.2 PC3), lipid accumulation (3-fold PNT1A; 1.8 22rv1; 3.6 PC3) and mitochondria damage in all cell lines. AKT, AMPK and PTEN were not activated in any cell line, but p-ERK1/2 increased (1.5-fold) in PNT1A. Expression of androgen-regulated and nuclear receptors genes showed that DHA affected them in a distinct pattern in each cell line, but most converged to metabolism regulation, response to hormones, lipids and stress. In conclusion, regardless of androgenic or PTEN background DHA exerted antiproliferative effect associated to cell cycle impairment, lipid deregulation and oxidative stress, but differentially regulated gene expression probably due to distinct molecular features of each pathologic stage.
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Affiliation(s)
| | - Rejane Maira Góes
- Institute of Biology, University of Campinas, Campinas, SP, Brazil; Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, São José do Rio Preto, SP, Brazil.
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Liang P, Henning SM, Guan J, Grogan T, Elashoff D, Olefsky JM, Cohen P, Aronson WJ. Role of Host GPR120 in Mediating Dietary Omega-3 Fatty Acid Inhibition of Prostate Cancer. J Natl Cancer Inst 2020; 111:52-59. [PMID: 30202902 DOI: 10.1093/jnci/djy125] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 06/25/2018] [Indexed: 12/27/2022] Open
Abstract
Background GPR120, a G protein-coupled receptor for long-chain polyunsaturated fatty acids (FAs), mediates the anti-inflammatory effects of omega-3 (ω-3) FAs. We investigated whether host or tumor GPR120 plays a role in the anti-prostate cancer effects of ω-3 FAs. Methods MycCap prostate cancer allografts were grown in immunocompetent wild-type (WT) and GPR120 knockout (KO) mice fed ω-3 (fish oil) or ω-6 (corn oil) diets. Immune cell infiltration was quantified by flow cytometry, and gene expression of immune cell markers in isolated tumor-associated macrophages (TAMs) was quantified by quantitative real-time polymerase chain reaction. Archived tissue from a fish oil intervention trial was used to correlate gene expression of GPR120 with cell cycle progression (CCP) genes and Ki67 index (n = 11-15 per group). All statistical tests were two-sided. Results In WT mice (n = 7 per group), dietary ω-3 FAs decreased MycCap allograft tumor growth (mean [SD] final tumor volume ω-6 = 491 [437] mm3 vs ω-3 = 127 [77] mm3, P = .04), whereas in global GPR120KO mice (n = 7 per group) ω-3 FAs had no anticancer effects. Dietary ω-3 FAs inhibited GPR120KO-MycCaP allografts grown in WT mice (n = 8 per group; mean [SD] final tumor volume ω-6 = 776 [767] mm3 vs ω-3 = 36 [34] mm3, P = .02). Omega-3 FA treatment decreased the number of M2-like TAMs in tumor tissue and gene expression of M2 markers in isolated TAMs compared with ω-6 controls in WT (n = 7 per group) but not in GPR120KO mice (n = 7 per group). In human tissue, higher expression of stromal GPR120 correlated with greater reduction in expression of CCP genes in men with prostate cancer on a high-ω-3 diet (r = -.57, P = .04). Conclusions Host GPR120 plays a central role in the anti-prostate cancer effects of dietary ω-3 FAs. Future studies are required to determine if the anticancer effects of ω-3 FAs are mediated through inhibition of M2-like macrophages and if host GPR120 status predicts anticancer effects of dietary ω-3 FAs in men with prostate cancer.
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Affiliation(s)
- Pei Liang
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Susanne M Henning
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Johnny Guan
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Tristan Grogan
- Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - David Elashoff
- Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Jerrold M Olefsky
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA
| | - William J Aronson
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA.,VA Medical Center Greater Los Angeles Healthcare System, Los Angeles, CA
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12
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13
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Pal M, Hodge AM, Papa N, MacInnis RJ, Bassett JK, Bolton D, Davis ID, Millar J, English DR, Hopper JL, Severi G, Southey MC, Milne RL, Giles GG. Body size and dietary risk factors for aggressive prostate cancer: a case-control study. Cancer Causes Control 2019; 30:1301-1312. [PMID: 31552571 DOI: 10.1007/s10552-019-01234-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 09/14/2019] [Indexed: 12/24/2022]
Abstract
PURPOSE Diet and body size may affect the risk of aggressive prostate cancer (APC), but current evidence is inconclusive. METHODS A case-control study was conducted in men under 75 years of age recruited from urology practices in Victoria, Australia; 1,254 with APC and 818 controls for whom the presence of prostate cancer had been excluded by biopsy. Dietary intakes were assessed using a validated food frequency questionnaire. Multivariable unconditional logistic regression estimated odds ratios and confidence intervals for hypothesized risk factors, adjusting for age, family history of prostate cancer, country of birth, socioeconomic status, smoking, and other dietary factors. RESULTS Positive associations with APC (odds ratio, 95% confidence intervals, highest vs. lowest category or quintile) were observed for body mass index (1.34, 1.02-1.78, Ptrend = 0.04), and trouser size (1.54, 1.17-2.04, Ptrend = 0.001). Intakes of milk and all dairy products were inversely associated with APC risk (0.71, 9.53-0.96, Ptrend = 0.05, and 0.64, 0.48-0.87, Ptrend = 0.012, respectively), but there was little evidence of an association with other dietary variables (Ptrend > 0.05). CONCLUSIONS We confirmed previous evidence for a positive association between body size and risk of APC, and suggest that consumption of dairy products, and milk more specifically, is inversely associated with risk.
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Affiliation(s)
- Mikaela Pal
- Karolinska Institute, Stockholm, Sweden. .,Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.
| | - Allison M Hodge
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Nathan Papa
- Department of Surgery, Austin Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Robert J MacInnis
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Julie K Bassett
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia
| | - Damien Bolton
- Department of Surgery, Austin Health, The University of Melbourne, Melbourne, VIC, Australia.,Olivia Newton-John Cancer and Wellness Centre, Austin Health, Heidelberg, VIC, Australia
| | - Ian D Davis
- Monash University, Melbourne, VIC, Australia.,Eastern Health, Box Hill, VIC, Australia
| | - Jeremy Millar
- Alfred Health Radiation Oncology, Alfred Hospital, Melbourne, VIC, Australia.,Department of Surgery, Central Clinical School, Monash University, The Alfred Centre, Melbourne, VIC, Australia
| | - Dallas R English
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
| | - Gianluca Severi
- Centre de Recherche en Épidémiologie et Santé des Populations (CESP, Inserm U1018), Facultés de Médecine, Université Paris-Saclay, UPS UVSQ, Gustave Roussy, Villejuif, France
| | - Melissa C Southey
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia.,Genetic Epidemiology Laboratory, Department of Clinical Pathology, University of Melbourne, Parkville, VIC, Australia
| | - Roger L Milne
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia.,Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia
| | - Graham G Giles
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC, Australia
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14
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Effect of dietary omega-3 fatty acids on castrate-resistant prostate cancer and tumor-associated macrophages. Prostate Cancer Prostatic Dis 2019; 23:127-135. [PMID: 31439889 PMCID: PMC7031053 DOI: 10.1038/s41391-019-0168-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/01/2019] [Accepted: 07/22/2019] [Indexed: 12/19/2022]
Abstract
Background M2-like macrophages are associated with the pathogenesis of castrate resistant prostate cancer (CRPC). We sought to determine if dietary omega-3 fatty acids (ω−3 FAs) delay the development and progression of CRPC and inhibit tumor associated M2-like macrophages. Methods MycCap cells were grown subcutaneously in immunocompetent FVB mice. Mice were castrated when tumors reached 300mm3. To study effects of dietary ω−3 FAs on development of CRPC, ω−3 or ω−6 diets were started two days after castration and mice sacrificed after early regrowth of tumors. To study ω−3 FA effects on progression of CRPC, tumors were allowed to regrow after castration before starting the diets. M2 (CD206+) macrophages were isolated from allografts to examine ω−3 FA effects on macrophage function. Omega-3 fatty acid effects on androgen-deprived RAW264.7 M2 macrophages was studied by RTqPCR and a migration/ invasion assay. Results The ω−3 diet combined with castration lead to greater MycCap tumor regression (182.2±33.6 mm3) than the ω−6 diet (148.3±35.2; p=0.003) and significantly delayed the time to CRPC (p=0.006). Likewise, the ω−3 diet significantly delayed progression of established castrate resistant MycCaP tumors (p=0.003). The ω−3 diet (as compared to the ω−6 diet) significantly reduced tumor associated M2-like macrophage expression of CSF-1R in the CRPC development model, and matrix metallopeptidase-9 (MMP-9) and vascular endothelial growth factor (VEGF) in the CRPC progression model. Migration of androgen depleted RAW264.7 M2 macrophages towards MycCaP cells was reversed by addition of docosahexaenoic acid (ω−3). Conclusions Dietary omega-3 FAs (as compared to omega-6 FAs) decreased the development and progression of CRPC in an immunocompetent mouse model, and had inhibitory effects on M2-like macrophage function. Clinical trials are warranted evaluating if a fish oil-based diet can delay the time to castration resistance in men on androgen deprivation therapy, whereas further pre-clinical studies are warranted evaluating fish oil for more advanced CRPC.
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15
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Lin PH, Freedland SJ. Dietary intake and prostate cancer, continued pursuit for evidence. Transl Androl Urol 2019; 8:S246-S249. [PMID: 31392135 DOI: 10.21037/tau.2019.01.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Pao-Hwa Lin
- Department of Medicine, Nephrology Division, Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC, USA
| | - Stephen J Freedland
- Department of Surgery, Division of Urology, Center for Integrated Research on Cancer and Lifestyle, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Surgery, Durham Veterans Affairs Medical Center, Durham, NC, USA
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16
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Omega-3 Fatty Acids Survey in Men under Active Surveillance for Prostate Cancer: from Intake to Prostate Tissue Level. Nutrients 2019; 11:nu11071616. [PMID: 31315273 PMCID: PMC6683032 DOI: 10.3390/nu11071616] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/12/2019] [Accepted: 07/12/2019] [Indexed: 01/05/2023] Open
Abstract
Dietary omega-3 fatty acids (ω3), particularly long-chain ω3 (LCω3), have protective effects against prostate cancer (PCa) in experimental studies. Observational studies are conflicting, possibly because of the biomarker used. This study aimed at evaluating associations between grade reclassification and ω3 levels assessed in prostatic tissue, red blood cells (RBC), and diet. We conducted a validation cross-sectional study nested within a phase II clinical trial. We identified 157 men diagnosed with low-risk PCa who underwent a first active surveillance repeat prostate biopsy session. Fatty acid (FA) intake was assessed using a food frequency questionnaire and their levels measured in prostate tissue and RBC. Associations were evaluated using logistic regression. At first repeat biopsy session, 39 (25%) men had high-grade PCa (grade group ≥2). We found that high LCω3-eicosapentaenoic acid (EPA) level in prostate tissue (odds ratio (OR) 0.25; 95% (confidence interval (CI) 0.08–0.79; p-trend = 0.03) was associated with lower odds of high-grade PCa. Similar results were observed for LCω3 dietary intake (OR 0.30; 95% CI 0.11-0.83; p-trend = 0.02) but no association for RBC. LCω3-EPA levels in the target prostate tissue are inversely associated with high-grade PCa in men with low-risk PCa, supporting that prostate tissue FA, but not RBC FA, is a reliable biomarker of PCa risk.
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17
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Abstract
Prostate cancer is the second most frequent cancer diagnosis made in men and the fifth leading cause of death worldwide. Prostate cancer may be asymptomatic at the early stage and often has an indolent course that may require only active surveillance. Based on GLOBOCAN 2018 estimates, 1,276,106 new cases of prostate cancer were reported worldwide in 2018, with higher prevalence in the developed countries. Differences in the incidence rates worldwide reflect differences in the use of diagnostic testing. Prostate cancer incidence and mortality rates are strongly related to the age with the highest incidence being seen in elderly men (> 65 years of age). African-American men have the highest incidence rates and more aggressive type of prostate cancer compared to White men. There is no evidence yet on how to prevent prostate cancer; however, it is possible to lower the risk by limiting high-fat foods, increasing the intake of vegetables and fruits and performing more exercise. Screening is highly recommended at age 45 for men with familial history and African-American men. Up-to-date statistics on prostate cancer occurrence and outcomes along with a better understanding of the etiology and causative risk factors are essential for the primary prevention of this disease.
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Affiliation(s)
- Prashanth Rawla
- Hospitalist, Department of Internal Medicine, SOVAH Health, Martinsville, VA 24112, USA.
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18
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Gevariya N, Besançon M, Robitaille K, Picard V, Diabaté L, Alesawi A, Julien P, Fradet Y, Bergeron A, Fradet V. Omega-3 fatty acids decrease prostate cancer progression associated with an anti-tumor immune response in eugonadal and castrated mice. Prostate 2019; 79:9-20. [PMID: 30073695 DOI: 10.1002/pros.23706] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 07/13/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND Several lines of evidence suggest effects of dietary fat on prostate cancer (PCa) development and progression. Targeting omega (ω)-3:ω6 fatty acids (FA) ratio could be beneficial against PCa by favorably modulating inflammation. Here, we studied the effects of ω3- and ω6-enriched diets on prostate tumor growth and inflammatory response in androgen-deprived and non-deprived conditions. METHODS Immune-competent eugonadal and castrated C57BL/6 mice were injected with TRAMP-C2 prostate tumor cells and daily fed with ω3- or ω6-enriched diet. FA and cytokine profiles were measured in blood and tumors using gas chromatography and multiplex immunoassay, respectively. Immune cell infiltration in tumors was profiled by multicolor flow cytometry. RESULTS ω3-enriched diet decreased prostate TRAMP-C2 tumor growth in immune-competent eugonadal and castrated mice. Cytokines associated with Th1 immune response (IL-12 [p70], IFN-γ, GM-CSF) and eosinophil recruitment (eotaxin-1, IL-5, and IL-13) were significantly elevated in tumors of ω3-fed mice. Using in vitro experiments, we confirmed ω3 FA-induced eotaxin-1 secretion by tumor cells and that eotaxin-1 secretion was regulated by androgens. Analysis of immune cell infiltrating tumors showed no major difference of immune cells' abundance between ω3- and ω6-enriched diets. CONCLUSIONS ω3-enriched diet reduces prostate tumor growth independently of androgen levels. ω3 FA can inhibit tumor cell growth and induce a local anti-tumor inflammatory response. These findings warrant further examination of dietary ω3's potential to slow down the progression of androgen-sensitive and castrate-resistant PCa by modulating immune cell function in tumors.
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Affiliation(s)
- Nikunj Gevariya
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
| | - Marjorie Besançon
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
| | - Karine Robitaille
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
| | - Valérie Picard
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
| | - Lamoussa Diabaté
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
| | - Anwar Alesawi
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
| | - Pierre Julien
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
- Endocrinology and Nephrology Axis, Centre de recherche du CHU de Québec-Université Laval-CHUL, Québec, Quebec, Canada
| | - Yves Fradet
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
| | - Alain Bergeron
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
| | - Vincent Fradet
- Laboratoire d'Uro-Oncologie Expérimentale, Oncology Axis, Centre de Recherche du CHU de Québec-Université Laval, Québec, Quebec, Canada
- Faculté de Medicine, Université Laval, Québec, Quebec, Canada
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19
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Battino M, Forbes-Hernández TY, Gasparrini M, Afrin S, Cianciosi D, Zhang J, Manna PP, Reboredo-Rodríguez P, Varela Lopez A, Quiles JL, Mezzetti B, Bompadre S, Xiao J, Giampieri F. Relevance of functional foods in the Mediterranean diet: the role of olive oil, berries and honey in the prevention of cancer and cardiovascular diseases. Crit Rev Food Sci Nutr 2018; 59:893-920. [PMID: 30421983 DOI: 10.1080/10408398.2018.1526165] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The traditional Mediterranean diet (MedDiet) is a well-known dietary pattern associated with longevity and improvement of life quality as it reduces the risk of the most common chronic pathologies, such as cancer and cardiovascular diseases (CVDs), that represent the principal cause of death worldwide. One of the most characteristic foods of MedDiet is olive oil, a very complex matrix, which constitutes the main source of fats and is used in the preparation of foods, both raw as an ingredient in recipes, and in cooking. Similarly, strawberries and raspberries are tasty and powerful foods which are commonly consumed in the Mediterranean area in fresh and processed forms and have attracted the scientific and consumer attention worldwide for their beneficial properties for human health. Besides olive oil and berries, honey has lately been introduced in the MedDiet thanks to its relevant nutritional, phytochemical and antioxidant profile. It is a sweet substance that has recently been classified as a functional food. The aim of this review is to present and discuss the recent evidence, obtained from in vitro, in vivo and epidemiological studies, on the potential roles exerted by these foods in the prevention and progression of different types of cancer and CVDs.
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Affiliation(s)
- Maurizio Battino
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Tamara Y Forbes-Hernández
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Massimiliano Gasparrini
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Sadia Afrin
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Danila Cianciosi
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Jiaojiao Zhang
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Piera P Manna
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
| | - Patricia Reboredo-Rodríguez
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy.,b Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Science , University of Vigo, Ourense Campus , Ourense , Spain
| | - Alfonso Varela Lopez
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy.,c Department of Physiology , Institute of Nutrition and Food Technology ''José Mataix", Biomedical Research Centre, University of Granada , Granada , Spain
| | - Josè L Quiles
- c Department of Physiology , Institute of Nutrition and Food Technology ''José Mataix", Biomedical Research Centre, University of Granada , Granada , Spain
| | - Bruno Mezzetti
- d Dipartimento di Scienze Agrarie, Alimentari e Ambientali , Università Politecnica delle Marche , Ancona , Italy
| | - Stefano Bompadre
- e Dipartimento di Scienze Biomediche e Sanità Pubblica , Università Politecnica delle Marche , Ancona , Italy
| | - Jianbo Xiao
- f Institute of Chinese Medical Sciences , University of Macau , Taipa , Macau , China
| | - Francesca Giampieri
- a Department of Clinical Sciences, Faculty of Medicine , Università Politecnica delle Marche , Ancona , Ancona , Italy
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20
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Schneider L, Su LJ, Arab L, Bensen JT, Farnan L, Fontham ETH, Song L, Hussey J, Merchant AT, Mohler JL, Steck SE. Dietary patterns based on the Mediterranean diet and DASH diet are inversely associated with high aggressive prostate cancer in PCaP. Ann Epidemiol 2018; 29:16-22.e1. [PMID: 30268488 DOI: 10.1016/j.annepidem.2018.08.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/12/2018] [Accepted: 08/30/2018] [Indexed: 01/26/2023]
Abstract
BACKGROUND Several foods and nutrients have been linked to the development of prostate cancer, but the association between healthy dietary patterns and prostate cancer aggressiveness is less studied. The aim of this study was to evaluate the relationship between the Mediterranean diet (MED) and Dietary Approaches to Stop Hypertension (DASH) diet scores and prostate cancer aggressiveness by race. METHODS Data from the population-based, case-only North Carolina-Louisiana Prostate Cancer Project (PCaP) were used to examine the association between diet quality, measured by MED and DASH scores, and prostate cancer aggressiveness in 1899 African American (AA) and European American (EA) research subjects. Dietary intake was assessed using a modified National Cancer Institute Diet History Questionnaire. Logistic regression was used to estimate adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for high versus low-intermediate aggressive prostate cancer. RESULTS Higher MED scores were inversely associated with high aggressive prostate cancer overall (OR: 0.66; 95% CI: 0.46, 0.95 for high versus low scores); results were similar for AA and EA men. A weaker inverse association between DASH scores and prostate cancer aggressiveness was found (OR: 0.76; 95% CI: 0.55, 1.06). CONCLUSIONS Higher diet quality, as represented by a Mediterranean-style diet or DASH diet, may reduce the odds of high aggressive prostate cancer.
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Affiliation(s)
- Lara Schneider
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | - L Joseph Su
- Winthrop P Rockefeller Cancer Institute and College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Lenore Arab
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Jeannette T Bensen
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Laura Farnan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Elizabeth T H Fontham
- School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA
| | - Lixin Song
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - James Hussey
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | - Anwar T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | - James L Mohler
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, NY; Department of Urology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Susan E Steck
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC.
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Castelló A, Boldo E, Amiano P, Castaño-Vinyals G, Aragonés N, Gómez-Acebo I, Peiró R, Jimenez-Moleón JJ, Alguacil J, Tardón A, Cecchini L, Lope V, Dierssen-Sotos T, Mengual L, Kogevinas M, Pollán M, Pérez-Gómez B. Mediterranean Dietary Pattern is Associated with Low Risk of Aggressive Prostate Cancer: MCC-Spain Study. J Urol 2017; 199:430-437. [PMID: 28842246 DOI: 10.1016/j.juro.2017.08.087] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 01/04/2023]
Abstract
PURPOSE We explored the association of the previously described Western, prudent and Mediterranean dietary patterns with prostate cancer risk by tumor aggressiveness and extension. MATERIALS AND METHODS MCC-Spain (Multicase-Control Study on Common Tumors in Spain) is a population based, multicase-control study that was done in 7 Spanish provinces between September 2008 and December 2013. It collected anthropometric, epidemiological and dietary information on 754 histologically confirmed incident cases of prostate cancer and 1,277 controls 38 to 85 years old. Three previously identified dietary patterns, including Western, prudent and Mediterranean, were reconstructed using MCC-Spain data. The association of each pattern with prostate cancer risk was assessed by logistic regression models with random, province specific intercepts. Risk according to tumor aggressiveness (Gleason score 6 vs greater than 6) and extension (cT1-cT2a vs cT2b-cT4) was evaluated by multinomial regression models. RESULTS High adherence to a Mediterranean dietary pattern rich not only in fruits and vegetables but also in fish, legumes and olive oil was specifically associated with a lower risk of Gleason score greater than 6 prostate cancer (quartile 3 vs 1 relative RR 0.66, 95% CI 0.46-0.96 and quartile 4 vs 1 relative RR 0.68, 95% CI 0.46-1.01, p-trend = 0.023) or with higher clinical stage (cT2b-T4 quartile 4 vs 1 relative RR 0.49, 95% CI 0.25-0.96, p-trend = 0.024). This association was not observed with the prudent pattern, which combines vegetables and fruits with low fat dairy products, whole grains and juices. The Western pattern did not show any association with prostate cancer risk. CONCLUSIONS Nutritional recommendations for prostate cancer prevention should consider whole dietary patterns instead of individual foods. We found important differences between the Mediterranean dietary pattern, which was associated with a lower risk of aggressive prostate cancer, and Western and prudent dietary patterns, which had no relationship with prostate cancer risk.
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Affiliation(s)
- Adela Castelló
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain.
| | - Elena Boldo
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Pilar Amiano
- Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Public Health Division of Gipuzkoa, BioDonostia Research Health Institute, San Sebastian, Spain
| | - Gemma Castaño-Vinyals
- ISGlobal, Centre for Research in Environmental Epidemiology, Barcelona, Spain; Medical Research Institute, Barcelona, Spain; Universitat Pompeu Fabra, Barcelona, Spain
| | - Nuria Aragonés
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | | | - Rosana Peiró
- Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana FISABIO-Salud Pública, Valencia, Spain
| | - Jose Juan Jimenez-Moleón
- Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Instituto de Investigación Biosanitaria de Granada and Department of Preventive Medicine and Public Health, School of Medicine. University of Granada, Granada, Spain
| | - Juan Alguacil
- Centro de Investigación en Salud y Medio Ambiente. Universidad de Huelva, Huelva, Spain
| | - Adonina Tardón
- Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, Oviedo, Spain
| | | | - Virginia Lope
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | | | - Lourdes Mengual
- Laboratory and Department of Urology, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universitat de Barcelona, Barcelona, Spain; Centre de Recerca Biomèdica CELLEX, Barcelona, Spain
| | - Manolis Kogevinas
- ISGlobal, Centre for Research in Environmental Epidemiology, Barcelona, Spain; Medical Research Institute, Barcelona, Spain; Universitat Pompeu Fabra, Barcelona, Spain
| | - Marina Pollán
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Beatriz Pérez-Gómez
- Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain; Consortium for Biomedical Research in Epidemiology and Public Health, Instituto de Salud Carlos III, Faculty of Medicine, University of Alcalá, Alcalá de Henares, Madrid, Spain
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22
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Herrera-Marcos LV, Lou-Bonafonte JM, Arnal C, Navarro MA, Osada J. Transcriptomics and the Mediterranean Diet: A Systematic Review. Nutrients 2017; 9:E472. [PMID: 28486416 PMCID: PMC5452202 DOI: 10.3390/nu9050472] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/25/2017] [Accepted: 05/01/2017] [Indexed: 01/21/2023] Open
Abstract
The Mediterranean diet has been proven to be highly effective in the prevention of cardiovascular diseases and cancer and in decreasing overall mortality. Nowadays, transcriptomics is gaining particular relevance due to the existence of non-coding RNAs capable of regulating many biological processes. The present work describes a systematic review of current evidence supporting the influence of the Mediterranean diet on transcriptomes of different tissues in various experimental models. While information on regulatory RNA is very limited, they seem to contribute to the effect. Special attention has been given to the oily matrix of virgin olive oil. In this regard, monounsaturated fatty acid-rich diets prevented the expression of inflammatory genes in different tissues, an action also observed after the administration of olive oil phenolic compounds. Among these, tyrosol, hydroxytyrosol, and secoiridoids have been found to be particularly effective in cell cycle expression. Less explored terpenes, such as oleanolic acid, are important modulators of circadian clock genes. The wide range of studied tissues and organisms indicate that response to these compounds is universal and poses an important level of complexity considering the different genes expressed in each tissue and the number of different tissues in an organism.
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Affiliation(s)
- Luis V Herrera-Marcos
- Departamento de Bioquímicay Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
| | - José M Lou-Bonafonte
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- Departamento de Farmacología y Fisiología, Facultad de Ciencias de la Salud y del Deporte, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, E-22002 Huesca, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, E-28029 Madrid, Spain.
| | - Carmen Arnal
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, E-28029 Madrid, Spain.
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
| | - María A Navarro
- Departamento de Bioquímicay Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, E-28029 Madrid, Spain.
| | - Jesús Osada
- Departamento de Bioquímicay Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, E-28029 Madrid, Spain.
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23
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Masko EM, Alfaqih MA, Solomon KR, Barry WT, Newgard CB, Muehlbauer MJ, Valilis NA, Phillips TE, Poulton SH, Freedland AR, Sun S, Dambal SK, Sanders SE, Macias E, Freeman MR, Dewhirst MW, Pizzo SV, Freedland SJ. Evidence for Feedback Regulation Following Cholesterol Lowering Therapy in a Prostate Cancer Xenograft Model. Prostate 2017; 77:446-457. [PMID: 27900797 PMCID: PMC5822711 DOI: 10.1002/pros.23282] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 11/04/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Epidemiologic data suggest cholesterol-lowering drugs may prevent the progression of prostate cancer, but not the incidence of the disease. However, the association of combination therapy in cholesterol reduction on prostate or any cancer is unclear. In this study, we compared the effects of the cholesterol lowering drugs simvastatin and ezetimibe alone or in combination on the growth of LAPC-4 prostate cancer in vivo xenografts. METHODS Proliferation assays were conducted by MTS solution and assessed by Student's t-test. 90 male nude mice were placed on a high-cholesterol Western-diet for 7 days then injected subcutaneously with 1 × 105 LAPC-4 cells. Two weeks post-injection, mice were randomized to control, 11 mg/kg/day simvastatin, 30 mg/kg ezetimibe, or the combination and sacrificed 42 days post-randomization. We used a generalized linear model with the predictor variables of treatment, time, and treatment by time (i.e., interaction term) with tumor volume as the outcome variable. Total serum and tumor cholesterol were measured. Tumoral RNA was extracted and cDNA synthesized from 1 ug of total RNA for quantitative real-time PCR. RESULTS Simvastatin directly reduced in vitro prostate cell proliferation in a dose-dependent, cell line-specific manner, but ezetimibe had no effect. In vivo, low continuous dosing of ezetimibe, delivered by food, or simvastatin, delivered via an osmotic pump had no effect on tumor growth compared to control mice. In contrast, dual treatment of simvastatin and ezetimibe accelerated tumor growth. Ezetimibe significantly lowered serum cholesterol by 15%, while simvastatin had no effect. Ezetimibe treatment resulted in higher tumor cholesterol. A sixfold induction of low density lipoprotein receptor mRNA was observed in ezetimibe and the combination with simvastatin versus control tumors. CONCLUSIONS Systemic cholesterol lowering by ezetimibe did not slow tumor growth, nor did the cholesterol independent effects of simvastatin and the combined treatment increased tumor growth. Despite lower serum cholesterol, tumors from ezetimibe treated mice had higher levels of cholesterol. This study suggests that induction of low density lipoprotein receptor is a possible mechanism of resistance that prostate tumors use to counteract the therapeutic effects of lowering serum cholesterol. Prostate 77:446-457, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Elizabeth M. Masko
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Mahmoud A. Alfaqih
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Keith R. Solomon
- Department of Orthopedic Surgery, Harvard Medical School, Boston, Massachusetts
| | - William T. Barry
- Department of Biostatistics and Bioinformatics, Duke University, Durham, North Carolina
| | - Christopher B. Newgard
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, North Carolina
| | - Michael J. Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, North Carolina
| | - Nikolaos A. Valilis
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Tameika E. Phillips
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Susan H. Poulton
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Alexis R. Freedland
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Stephanie Sun
- Department of Surgery, Durham Veterans Administration Hospital, Durham, North Carolina
| | - Shweta K. Dambal
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Sergio E. Sanders
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Everardo Macias
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Michael R. Freeman
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Mark W. Dewhirst
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Salvatore V. Pizzo
- Department of Pathology, Duke University Medical Center, Durham, North Carolina
| | - Stephen J. Freedland
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Surgery, Durham Veterans Administration Hospital, Durham, North Carolina
- Correspondence to: Dr. Stephen Freedland, Division of Urology, Department of Surgery, Cedars Sinai Medical Center, 8635 West 3rd Street Suite 1070W, Los Angeles, CA 90048.
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24
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Aucoin M, Cooley K, Knee C, Fritz H, Balneaves LG, Breau R, Fergusson D, Skidmore B, Wong R, Seely D. Fish-Derived Omega-3 Fatty Acids and Prostate Cancer: A Systematic Review. Integr Cancer Ther 2017; 16:32-62. [PMID: 27365385 PMCID: PMC5736071 DOI: 10.1177/1534735416656052] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/16/2016] [Accepted: 05/18/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The use of natural health products in prostate cancer (PrCa) is high despite a lack of evidence with respect to safety and efficacy. Fish-derived omega-3 fatty acids possess anti-inflammatory effects and preclinical data suggest a protective effect on PrCa incidence and progression; however, human studies have yielded conflicting results. METHODS A search of OVID MEDLINE, Pre-MEDLINE, Embase, and the Allied and Complementary Medicine Database (AMED) was completed for human interventional or observational data assessing the safety and efficacy of fish-derived omega-3 fatty acids in the incidence and progression of PrCa. RESULTS Of 1776 citations screened, 54 publications reporting on 44 studies were included for review and analysis: 4 reports of 3 randomized controlled trials, 1 nonrandomized clinical trial, 20 reports of 14 cohort studies, 26 reports of 23 case-control studies, and 3 case-cohort studies. The interventional studies using fish oil supplements in patients with PrCa showed no impact on prostate-specific antigen levels; however, 2 studies showed a decrease in inflammatory or other cancer markers. A small number of mild adverse events were reported and interactions with other interventions were not assessed. Cohort and case-control studies assessing the relationship between dietary fish intake and the risk of PrCa were equivocal. Cohort studies assessing the risk of PrCa mortality suggested an association between higher intake of fish and decreased risk of prostate cancer-related death. CONCLUSIONS Current evidence is insufficient to suggest a relationship between fish-derived omega-3 fatty acid and risk of PrCa. An association between higher omega-3 intake and decreased PrCa mortality may be present but more research is needed. More intervention trials or observational studies with precisely measured exposure are needed to assess the impact of fish oil supplements and dietary fish-derived omega-3 fatty acid intake on safety, PrCa incidence, treatment, and progression.
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Affiliation(s)
- Monique Aucoin
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
| | - Kieran Cooley
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
| | - Christopher Knee
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
| | - Heidi Fritz
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
| | | | - Rodney Breau
- Ottawa Hospital General Campus, Ottawa, Ontario, Canada
| | - Dean Fergusson
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Becky Skidmore
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
| | | | - Dugald Seely
- Canadian College of Naturopathic Medicine, Toronto, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Ottawa Integrative Cancer Centre, Ottawa, Ontario, Canada
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25
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Liang P, Henning SM, Schokrpur S, Wu L, Doan N, Said J, Grogan T, Elashoff D, Cohen P, Aronson WJ. Effect of Dietary Omega-3 Fatty Acids on Tumor-Associated Macrophages and Prostate Cancer Progression. Prostate 2016; 76:1293-302. [PMID: 27338236 PMCID: PMC5081258 DOI: 10.1002/pros.23218] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 06/01/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Preclinical and clinical studies suggest that a fish oil-based diet may play a role in delaying the progression of prostate cancer through a number of different mechanisms involving inflammatory pathways. Given the importance of tumor-associated macrophages (TAMs) in carcinogenesis, we hypothesized that a fish oil-based diet will inhibit TAM infiltration and delay the growth of prostate cancer. METHODS Androgen sensitive mouse prostate cancer (MycCaP) allograft tumors were grown in fully immunocompetent FVB mice fed a high- fat fish oil (omega-3) or corn oil (omega-6) diet. Gene expression of markers for immune cell populations, cytokines, chemokines, and signaling pathways were determined by real-time PCR and western blot in tumor tissue. Cell proliferation and apoptosis in vitro were measured by MTS assay and flow cytometry. RESULTS Tumor volumes were significantly smaller in mice in ω-3 versus the ω-6 group (P = 0.048). Gene expression of markers for M1 and M2 macrophages (F4/80, iNOS, ARG1), associated cytokines (IL-6, TNF alpha, IL-10), and the chemokine CCL-2 were also lower in the omega-3 group. Correlative in vitro studies were performed in M1 and M2 polarized macrophages and mirrored the in vivo findings. Dietary fish oil and in vitro omega-3 fatty acid administration reduced protein expression of transcription factors in the nuclear factor kappa B pathway leading to a significant decrease in gene expression of downstream targets (Bcl-2, BCL-XL, XIAP, survivin) in MycCap cells. CONCLUSIONS These findings underscore the potential of fish oil in modulating the clinical course of human prostate cancer through the immune system. Further preclinical and clinical studies are warranted evaluating fish oil-based therapies for inhibiting the recruitment and function of M1 and M2 tumor infiltrating macrophages. Prostate 76:1293-1302, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Pei Liang
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Susanne M Henning
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Shiruyeh Schokrpur
- Departments of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Lily Wu
- Departments of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Ngan Doan
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Jonathan Said
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Tristan Grogan
- Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - David Elashoff
- Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Pinchas Cohen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California
| | - William J Aronson
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- VA Medical Center Greater Los Angeles Healthcare System, Los Angeles, California
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26
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Kim H, Yokoyama W, Davis PA. TRAMP prostate tumor growth is slowed by walnut diets through altered IGF-1 levels, energy pathways, and cholesterol metabolism. J Med Food 2015; 17:1281-6. [PMID: 25354213 DOI: 10.1089/jmf.2014.0061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Dietary changes could potentially reduce prostate cancer morbidity and mortality. Transgenic adenocarcinoma of the mouse prostate (TRAMP) prostate tumor responses to a 100 g of fat/kg diet (whole walnuts, walnut oil, and other oils; balanced for macronutrients, tocopherols [α-and γ]) for 18 weeks ad libitum were assessed. TRAMP mice (n=17 per group) were fed diets with 100 g fat from either whole walnuts (diet group WW), walnut-like fat (diet group WLF, oils blended to match walnut's fatty acid profile), or as walnut oil (diet group WO, pressed from the same walnuts as WW). Fasted plasma glucose was from tail vein blood, blood was obtained by cardiac puncture, and plasma stored frozen until analysis. Prostate (genitourinary intact [GUI]) was weighed and stored frozen at -80°C. Plasma triglyceride, lipoprotein cholesterol, plasma multianalyte levels (Myriad RBM Rat Metabolic MAP), prostate (GUI), tissue metabolites (Metabolon, Inc., Durham, NC, USA), and mRNA (by Illumina NGS) were determined. The prostate tumor size, plasma insulin-like growth factor-1 (IGF-1), high density lipoprotein, and total cholesterol all decreased significantly (P<.05) in both WW and WO compared to WLF. Both WW and WO versus WLF showed increased insulin sensitivity (Homeostasis Model Assessment [HOMA]), and tissue metabolomics found reduced glucose-6-phosphate, succinylcarnitine, and 4-hydroxybutyrate in these groups suggesting effects on cellular energy status. Tissue mRNA levels also showed changes suggestive of altered glucose metabolism with WW and WO diet groups having increased PCK1 and CIDEC mRNA expression, known for their roles in gluconeogenesis and increased insulin sensitivity, respectively. WW and WO group tissues also had increased MSMB mRNa a tumor suppressor and decreased COX-2 mRNA, both reported to inhibit prostate tumor growth. Walnuts reduced prostate tumor growth by affecting energy metabolism along with decreased plasma IGF-1 and cholesterol. These effects are not due to the walnut's N-3 fatty acids, but due to component(s) found in the walnut's fat component.
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Affiliation(s)
- Hyunsook Kim
- 1 Department of Physiology, College of Veterinary Medicine, Konkuk University , Seoul, South Korea
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27
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A high-fat diet containing lard accelerates prostate cancer progression and reduces survival rate in mice: possible contribution of adipose tissue-derived cytokines. Nutrients 2015; 7:2539-61. [PMID: 25912035 PMCID: PMC4425160 DOI: 10.3390/nu7042539] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/17/2015] [Accepted: 03/26/2015] [Indexed: 01/19/2023] Open
Abstract
To examine the effects of high-fat diet (HFD) containing lard on prostate cancer development and progression and its underlying mechanisms, transgenic adenocarcinoma mouse prostate (TRAMP) and TRAMP-C2 allograft models, as well as in vitro culture models, were employed. In TRAMP mice, HFD feeding increased the incidence of poorly differentiated carcinoma and decreased that of prostatic intraepithelial neoplasia in the dorsolateral lobes of the prostate, which was accompanied by increased expression of proteins associated with proliferation and angiogenesis. HFD feeding also led to increased metastasis and decreased survival rate in TRAMP mice. In the allograft model, HFD increased solid tumor growth, the expression of proteins related to proliferation/angiogenesis, the number of lipid vacuoles in tumor tissues, and levels of several cytokines in serum and adipose tissue. In vitro results revealed that adipose tissue-conditioned media from HFD-fed mice stimulated the proliferation and migration of prostate cancer cells and angiogenesis compared to those from control-diet-fed mice. These results indicate that the increase of adipose tissue-derived soluble factors by HFD feeding plays a role in the growth and metastasis of prostate cancer via endocrine and paracrine mechanisms. These results provide evidence that a HFD containing lard increases prostate cancer development and progression, thereby reducing the survival rate.
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28
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Xu H, Jiang HW, Ding Q. Insulin-Like growth factor 1 related pathways and high-fat diet promotion of transgenic adenocarcinoma mouse prostate (TRAMP) cancer progression. Actas Urol Esp 2015; 39:161-8. [PMID: 25442907 DOI: 10.1016/j.acuro.2014.05.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 05/14/2014] [Indexed: 01/24/2023]
Abstract
INTRODUCTION We aimed to investigate the role of IGF-1 related pathway in high-fat diet (HFD) promotion of TRAMP mouse PCa progression. METHODS TRAMP mice were randomly divided into two groups: HFD group and normal diet group. TRAMP mice of both groups were sacrificed and sampled on the 20th, 24th and 28th week respectively. Serum levels of insulin, IGF-1 and IGF-2 were tested by ELISA. Prostate tissue of TRAMP mice was used for both HE staining and immunohistochemical staining of IGF-1 related pathway proteins, including IGF-1Rα, IGF -1Rβ, IGFBPs and AKT. RESULTS The mortality of TRAMP mice from HFD group was significantly higher than that of normal diet group (23.81% and 7.14%, p=.035). The tumor incidence of HFD TRAMP mice at 20(th) week was significantly higher than normal diet group (78.57% and 35.71%, p=.022). Serum IGF-1 level of HFD TRAMP mice was significantly higher than that of normal diet TRAMP mice. Serum IGF-1 level tended to increase with HFD TRAMP mice's age. HFD TRAMP mice had higher positive staining rate of IGF-1Rα, IGF-1Rβ, IGFBP3 and Akt than normal diet TRAMP mice. CONCLUSIONS IGF-1 related pathway played an important role in high-fat diet promotion of TRAMP mouse PCa development and progression.
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Affiliation(s)
- H Xu
- Departamento de Urología, Hospital Huashan, Universidad Fudan, Shanghai, PR China
| | - H W Jiang
- Departamento de Urología, Hospital Huashan, Universidad Fudan, Shanghai, PR China.
| | - Q Ding
- Departamento de Urología, Hospital Huashan, Universidad Fudan, Shanghai, PR China
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29
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Lin PH, Aronson W, Freedland SJ. Nutrition, dietary interventions and prostate cancer: the latest evidence. BMC Med 2015; 13:3. [PMID: 25573005 PMCID: PMC4286914 DOI: 10.1186/s12916-014-0234-y] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 11/11/2014] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer (PCa) remains a leading cause of mortality in US men and the prevalence continues to rise world-wide especially in countries where men consume a 'Western-style' diet. Epidemiologic, preclinical and clinical studies suggest a potential role for dietary intake on the incidence and progression of PCa. 'This minireview provides an overview of recent published literature with regard to nutrients, dietary factors, dietary patterns and PCa incidence and progression. Low carbohydrates intake, soy protein, omega-3 (w-3) fat, green teas, tomatoes and tomato products and zyflamend showed promise in reducing PCa risk or progression. A higher saturated fat intake and a higher β-carotene status may increase risk. A 'U' shape relationship may exist between folate, vitamin C, vitamin D and calcium with PCa risk. Despite the inconsistent and inconclusive findings, the potential for a role of dietary intake for the prevention and treatment of PCa is promising. The combination of all the beneficial factors for PCa risk reduction in a healthy dietary pattern may be the best dietary advice. This pattern includes rich fruits and vegetables, reduced refined carbohydrates, total and saturated fats, and reduced cooked meats. Further carefully designed prospective trials are warranted.
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Affiliation(s)
- Pao-Hwa Lin
- Department of Medicine, Division of Nephrology, Duke University Medical Center, Box 3487, Durham, NC 27710 USA
| | - William Aronson
- Urology Section, Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA USA
- Department of Urology, UCLA School of Medicine, Los Angeles, CA USA
| | - Stephen J Freedland
- Urology Section, Department of Surgery, Durham Veterans Affairs Medical Center, Division of Urology, Durham, NC USA
- Duke Prostate Center, Departments of Surgery and Pathology, Duke University Medical Center, Durham, NC USA
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30
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Ting H, Deep G, Agarwal C, Agarwal R. The strategies to control prostate cancer by chemoprevention approaches. Mutat Res 2014; 760:1-15. [PMID: 24389535 DOI: 10.1016/j.mrfmmm.2013.12.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/23/2013] [Accepted: 12/12/2013] [Indexed: 02/07/2023]
Abstract
Prostate cancer (PCA) is the most commonly diagnosed cancer in men in the United States with growing worldwide incidence. Despite intensive investment in improving early detection, PCA often escapes timely detection and mortality remains high; this malignancy being the second highest cancer-associated mortality in American men. Collectively, health care costs of PCA results in an immense financial burden that is only expected to grow. Additionally, even in cases of successful treatment, PCA is associated with long-term and pervasive effects on patients. A proactive alternative to treat PCA is to prevent its occurrence and progression prior to symptomatic malignancy. This may serve to address the issue of burgeoning healthcare costs and increasing number of sufferers. One potential regimen in service of this alternative is PCA chemoprevention. Here, chemical compounds with cancer preventive efficacy are identified on the basis of their potential in a host of categories: their historical medicinal use, correlation with reduced risk in population studies, non-toxicity, their unique chemical properties, or their role in biological systems. PCA chemopreventive agents are drawn from multiple broad classes of chemicals, themselves further subdivided based on source or potential effect, with most derived from natural products. Many such compounds have shown efficacy, varying from inhibiting deregulated PCA cell signaling, proliferation, epithelial to mesenchymal transition (EMT), invasion, metastasis, tumor growth and angiogenesis and inducing apoptosis. Overall, these chemopreventive agents show great promise in PCA pre-clinical models, though additional work remains to be done in effectively translating these findings into clinical use.
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Affiliation(s)
- Harold Ting
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, United States
| | - Gagan Deep
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, United States; University of Colorado Cancer Center, University of Colorado, Aurora, CO, United States
| | - Chapla Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, United States; University of Colorado Cancer Center, University of Colorado, Aurora, CO, United States
| | - Rajesh Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, United States; University of Colorado Cancer Center, University of Colorado, Aurora, CO, United States.
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Galet C, Gollapudi K, Stepanian S, Byrd JB, Henning SM, Grogan T, Elashoff D, Heber D, Said J, Cohen P, Aronson WJ. Effect of a low-fat fish oil diet on proinflammatory eicosanoids and cell-cycle progression score in men undergoing radical prostatectomy. Cancer Prev Res (Phila) 2013; 7:97-104. [PMID: 24169960 DOI: 10.1158/1940-6207.capr-13-0261] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We previously reported that a 4- to 6-week low-fat fish oil (LFFO) diet did not affect serum insulin-like growth factor (IGF)-1 levels (primary outcome) but resulted in lower omega-6 to omega-3 fatty acid ratios in prostate tissue and lower prostate cancer proliferation (Ki67) as compared with a Western diet. In this post hoc analysis, the effect of the LFFO intervention on serum pro-inflammatory eicosanoids, leukotriene B4 (LTB4) and 15-S-hydroxyeicosatetraenoic acid [15(S)-HETE], and the cell-cycle progression (CCP) score were investigated. Serum fatty acids and eicosanoids were measured by gas chromatography and ELISA. CCP score was determined by quantitative real-time reverse transcriptase PCR (RT-PCR). Associations between serum eicosanoids, Ki67, and CCP score were evaluated using partial correlation analyses. BLT1 (LTB4 receptor) expression was determined in prostate cancer cell lines and prostatectomy specimens. Serum omega-6 fatty acids and 15(S)-HETE levels were significantly reduced, and serum omega-3 levels were increased in the LFFO group relative to the Western diet group, whereas there was no change in LTB4 levels. The CCP score was significantly lower in the LFFO compared with the Western diet group. The 15(S)-HETE change correlated with tissue Ki67 (R = 0.48; P < 0.01) but not with CCP score. The LTB4 change correlated with the CCP score (r = 0.4; P = 0.02) but not with Ki67. The LTB4 receptor BLT1 was detected in prostate cancer cell lines and human prostate cancer specimens. In conclusion, an LFFO diet resulted in decreased 15(S)-HETE levels and lower CCP score relative to a Western diet. Further studies are warranted to determine whether the LFFO diet antiproliferative effects are mediated through the LTB4/BLT1 and 15(S)-HETE pathways.
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Affiliation(s)
- Colette Galet
- Department of Urology, University of California-Los Angeles, Box 951738, Los Angeles, CA 90095-1738;
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