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Erazo-Oliveras A, Muñoz-Vega M, Salinas ML, Wang X, Chapkin RS. Dysregulation of cellular membrane homeostasis as a crucial modulator of cancer risk. FEBS J 2024; 291:1299-1352. [PMID: 36282100 PMCID: PMC10126207 DOI: 10.1111/febs.16665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 09/09/2022] [Accepted: 10/24/2022] [Indexed: 11/07/2022]
Abstract
Cellular membranes serve as an epicentre combining extracellular and cytosolic components with membranous effectors, which together support numerous fundamental cellular signalling pathways that mediate biological responses. To execute their functions, membrane proteins, lipids and carbohydrates arrange, in a highly coordinated manner, into well-defined assemblies displaying diverse biological and biophysical characteristics that modulate several signalling events. The loss of membrane homeostasis can trigger oncogenic signalling. More recently, it has been documented that select membrane active dietaries (MADs) can reshape biological membranes and subsequently decrease cancer risk. In this review, we emphasize the significance of membrane domain structure, organization and their signalling functionalities as well as how loss of membrane homeostasis can steer aberrant signalling. Moreover, we describe in detail the complexities associated with the examination of these membrane domains and their association with cancer. Finally, we summarize the current literature on MADs and their effects on cellular membranes, including various mechanisms of dietary chemoprevention/interception and the functional links between nutritional bioactives, membrane homeostasis and cancer biology.
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Affiliation(s)
- Alfredo Erazo-Oliveras
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Mónica Muñoz-Vega
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Michael L. Salinas
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Xiaoli Wang
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
- Center for Environmental Health Research; Texas A&M University; College Station, Texas, 77843; USA
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2
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Gurav P, Patade T, Hajare S, Kedar RN. n-3 PUFAs synergistically enhance the efficacy of doxorubicin by inhibiting the proliferation and invasion of breast cancer cells. Med Oncol 2023; 41:2. [PMID: 38017288 DOI: 10.1007/s12032-023-02229-w] [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: 09/15/2023] [Accepted: 10/25/2023] [Indexed: 11/30/2023]
Abstract
Breast cancer stands as a prominent contributor to cancer-related fatalities among women globally, characterized by an unfavorable prognosis, low survival rates, and its conventional treatment approach involving chemotherapy. Doxorubicin (DOXO) represents a potent anti-tumor agent widely employed in combating breast cancer. Regrettably, a substantial proportion of patients eventually develop resistance to DOXO treatment, elevating the risk of relapse and adverse clinical outcomes. Omega-3 polyunsaturated fatty acids (n-3 PUFAs), recognized as essential components of the human diet, have exhibited considerable promise in targeting malignant cells, initiating apoptosis, and impeding tumor proliferation and metastatic dissemination. Combining these nutritional supplements, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), with DOXO presents a compelling strategy to augment treatment efficacy. The present study was conducted employing a breast cancer cell line, MCF-7, to assess the synergistic potential of DHA, EPA, and DOXO. Remarkably, the combination treatment yielded a substantial increase in cytotoxicity compared to the administration of DOXO alone. Furthermore, an enhancement in the suppression of metastasis was evident in the combination treatment relative to the exclusive use of DOXO. Cell cycle analysis unveiled that cells subjected to the combination treatment exhibited a more pronounced arrest in the G1 phase, signifying the combination's heightened effectiveness in impeding cell progression into the doubling phase. Collectively, the amalgamation of n-3 polyunsaturated fatty acids (n-3 PUFAs) emerges as a potent strategy for enhancing the therapeutic potential of DOXO, effectively restraining the growth and dissemination of breast cancer cells.
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Affiliation(s)
- Pradnya Gurav
- School of Bioengineering Sciences and Research, MIT Arts, Design and Technology University, Rajbaugh Campus, Loni Kalbhor, Pune, Maharashtra, 412201, India
| | - Tanvi Patade
- School of Bioengineering Sciences and Research, MIT Arts, Design and Technology University, Rajbaugh Campus, Loni Kalbhor, Pune, Maharashtra, 412201, India
| | - Shubham Hajare
- School of Bioengineering Sciences and Research, MIT Arts, Design and Technology University, Rajbaugh Campus, Loni Kalbhor, Pune, Maharashtra, 412201, India
| | - R N Kedar
- School of Bioengineering Sciences and Research, MIT Arts, Design and Technology University, Rajbaugh Campus, Loni Kalbhor, Pune, Maharashtra, 412201, India.
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3
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Erazo-Oliveras A, Muñoz-Vega M, Mlih M, Thiriveedi V, Salinas ML, Rivera-Rodríguez JM, Kim E, Wright RC, Wang X, Landrock KK, Goldsby JS, Mullens DA, Roper J, Karpac J, Chapkin RS. Mutant APC reshapes Wnt signaling plasma membrane nanodomains by altering cholesterol levels via oncogenic β-catenin. Nat Commun 2023; 14:4342. [PMID: 37468468 PMCID: PMC10356786 DOI: 10.1038/s41467-023-39640-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 06/21/2023] [Indexed: 07/21/2023] Open
Abstract
Although the role of the Wnt pathway in colon carcinogenesis has been described previously, it has been recently demonstrated that Wnt signaling originates from highly dynamic nano-assemblies at the plasma membrane. However, little is known regarding the role of oncogenic APC in reshaping Wnt nanodomains. This is noteworthy, because oncogenic APC does not act autonomously and requires activation of Wnt effectors upstream of APC to drive aberrant Wnt signaling. Here, we demonstrate the role of oncogenic APC in increasing plasma membrane free cholesterol and rigidity, thereby modulating Wnt signaling hubs. This results in an overactivation of Wnt signaling in the colon. Finally, using the Drosophila sterol auxotroph model, we demonstrate the unique ability of exogenous free cholesterol to disrupt plasma membrane homeostasis and drive Wnt signaling in a wildtype APC background. Collectively, these findings provide a link between oncogenic APC, loss of plasma membrane homeostasis and CRC development.
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Affiliation(s)
- Alfredo Erazo-Oliveras
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Mónica Muñoz-Vega
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Mohamed Mlih
- Department of Cell Biology and Genetics, Texas A&M University, School of Medicine, Bryan, TX, 77807, USA
| | - Venkataramana Thiriveedi
- Department of Medicine, Division of Gastroenterology, Duke University School of Medicine, Durham, NC, 27710, USA
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Michael L Salinas
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Jaileen M Rivera-Rodríguez
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Eunjoo Kim
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Denver, CO, 80045, USA
| | - Rachel C Wright
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
| | - Xiaoli Wang
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
| | - Kerstin K Landrock
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
| | - Jennifer S Goldsby
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Destiny A Mullens
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA
| | - Jatin Roper
- Department of Medicine, Division of Gastroenterology, Duke University School of Medicine, Durham, NC, 27710, USA
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Jason Karpac
- Department of Cell Biology and Genetics, Texas A&M University, School of Medicine, Bryan, TX, 77807, USA
| | - Robert S Chapkin
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, 77843, USA.
- Department of Nutrition, Texas A&M University, College Station, TX, 77843, USA.
- CPRIT Regional Center of Excellence in Cancer Research, Texas A&M University, College Station, TX, 77843, USA.
- Center for Environmental Health Research, Texas A&M University, College Station, TX, 77843, USA.
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Saliakoura M, Konstantinidou G. Lipid Metabolic Alterations in KRAS Mutant Tumors: Unmasking New Vulnerabilities for Cancer Therapy. Int J Mol Sci 2023; 24:ijms24021793. [PMID: 36675307 PMCID: PMC9864058 DOI: 10.3390/ijms24021793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
KRAS is one of the most commonly mutated genes, an event that leads to development of highly aggressive and resistant to any type of available therapy tumors. Mutated KRAS drives a complex network of lipid metabolic rearrangements to support the adaptation of cancer cells to harsh environmental conditions and ensure their survival. Because there has been only a little success in the continuous efforts of effectively targeting KRAS-driven tumors, it is of outmost importance to delineate the exact mechanisms of how they get rewired, leading to this distinctive phenotype. Therefore, the aim of this review is to summarize the available data acquired over the last years with regard to the lipid metabolic regulation of KRAS-driven tumors and elucidate their specific characteristics in an attempt to unravel novel therapeutic targets.
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Hoxha M, Zappacosta B. A review on the role of fatty acids in colorectal cancer progression. Front Pharmacol 2022; 13:1032806. [PMID: 36578540 PMCID: PMC9791100 DOI: 10.3389/fphar.2022.1032806] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Colorectal cancer (CRC) is the third leading cause of mortality in cancer patients. The role of fatty acids (FA) and their metabolism in cancer, particularly in CRC raises a growing interest. In particular, dysregulation of synthesis, desaturation, elongation, and mitochondrial oxidation of fatty acids are involved. Here we review the current evidence on the link between cancer, in particular CRC, and fatty acids metabolism, not only to provide insight on its pathogenesis, but also on the development of novel biomarkers and innovative pharmacological therapies that are based on FAs dependency of cancer cells.
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6
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Mu H, Zeng Y, Zhuang Y, Gao W, Zhou Y, Rajalingam K, Zhao W. Patterning of Oncogenic Ras Clustering in Live Cells Using Vertically Aligned Nanostructure Arrays. NANO LETTERS 2022; 22:1007-1016. [PMID: 35044178 DOI: 10.1021/acs.nanolett.1c03886] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
As a dominant oncogenic protein, Ras is well-known to segregate into clusters on the plasma membrane for activating downstream signaling. However, current technologies for direct measurements of Ras clustering are limited to sophisticated high-resolution techniques like electron microscopy and fluorescence lifetime imaging. To further promote fundamental investigations and the related drug development, we hereby introduce a nanobar-based platform which effectively guides Ras clusters into quantifiable patterns in live cells that is resolvable under conventional microscopy. Major Ras isoforms, K-Ras, H-Ras, and N-Ras, were differentiated, as well as their highly prevalent oncogenic mutants G12V and G13D. Moreover, the isoform specificity and the sensitivity of a Ras inhibitor were successfully characterized on nanobars. We envision that this nanobar-based platform will serve as an effective tool to read Ras clustering on the plasma membrane, enabling a novel avenue both to decipher Ras regulations and to facilitate anti-Ras drug development.
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Affiliation(s)
- Huanwen Mu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
- Ageing Research Institute for Society and Education, Nanyang Technological University, Singapore 637335, Singapore
| | - Yongpeng Zeng
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
| | - Yinyin Zhuang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
| | - Weibo Gao
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 637371, Singapore
| | - Yong Zhou
- Department of Integrative Biology and Pharmacology, McGovern Medical School at the University of Texas Health Sciences Center, Houston, Texas 77030, United States
- Graduate Program in Biochemistry and Cell Biology, MD Anderson Cancer Center and UTHealth Graduate School of Biomedical Sciences, Houston, Texas 77030, United States
| | - Krishnaraj Rajalingam
- Cell Biology Unit, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
- University Cancer Center Mainz, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
| | - Wenting Zhao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457, Singapore
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7
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Bartolacci C, Andreani C, El-Gammal Y, Scaglioni PP. Lipid Metabolism Regulates Oxidative Stress and Ferroptosis in RAS-Driven Cancers: A Perspective on Cancer Progression and Therapy. Front Mol Biosci 2021; 8:706650. [PMID: 34485382 PMCID: PMC8415548 DOI: 10.3389/fmolb.2021.706650] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/02/2021] [Indexed: 01/17/2023] Open
Abstract
HRAS, NRAS and KRAS, collectively referred to as oncogenic RAS, are the most frequently mutated driver proto-oncogenes in cancer. Oncogenic RAS aberrantly rewires metabolic pathways promoting the generation of intracellular reactive oxygen species (ROS). In particular, lipids have gained increasing attention serving critical biological roles as building blocks for cellular membranes, moieties for post-translational protein modifications, signaling molecules and substrates for ß-oxidation. However, thus far, the understanding of lipid metabolism in cancer has been hampered by the lack of sensitive analytical platforms able to identify and quantify such complex molecules and to assess their metabolic flux in vitro and, even more so, in primary tumors. Similarly, the role of ROS in RAS-driven cancer cells has remained elusive. On the one hand, ROS are beneficial to the development and progression of precancerous lesions, by upregulating survival and growth factor signaling, on the other, they promote accumulation of oxidative by-products that decrease the threshold of cancer cells to undergo ferroptosis. Here, we overview the recent advances in the study of the relation between RAS and lipid metabolism, in the context of different cancer types. In particular, we will focus our attention on how lipids and oxidative stress can either promote or sensitize to ferroptosis RAS driven cancers. Finally, we will explore whether this fine balance could be modulated for therapeutic gain.
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Affiliation(s)
| | | | | | - Pier Paolo Scaglioni
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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8
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de Castro ÍRR, Maciel DL, Vargas JAC, Gomes DI, Maciel RP, Mezzomo R, da Gama MAS, Oliveira LRS, Galvão LTO, da Silva Pereira K, Alves KS. Nutrient utilization, performance, and milk fatty acid composition of grazing cows fed supplements with babassu coconut. Trop Anim Health Prod 2021; 53:433. [PMID: 34386894 DOI: 10.1007/s11250-021-02869-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/23/2021] [Indexed: 10/20/2022]
Abstract
This study evaluated the effects of dietary inclusion of cracked babassu coconut (CBC) in the supplement on nutrient utilization, performance, and milk fatty acid (FA) composition of dairy cows grazing Megathyrsus maximus cv. Mombasa. Five multiparous Holstein × Zebu mid-lactation cows (125 ± 16.5 days in milk) were assigned to five dietary treatments (replacement of 0%, 20%, 40%, 60%, and 80% of ground corn with CBC, on a dry matter (DM) basis) in a 5 × 5 Latin square design. The intake of DM from the supplement, crude protein (CP), non-fiber carbohydrate (NFC), fat (ether extract (EE)), and total digestible nutrients (TDNs) decreased linearly (P < 0.05), while the intake of DM from forage increased linearly (P < 0.05), with the increase in CBC inclusion in the supplement. Conversely, total DM intake was unaffected (P > 0.05). The DM, NFC, EE, and TDN digestibility decreased linearly (P < 0.05), while organic matter (OM) digestibility decreased in a quadratic fashion (P < 0.05), as CBC inclusion in the supplement increased. Nevertheless, digestibility of CP was unaffected (P > 0.05). Milk yield and composition (lactose, fat, protein, casein, and majority of FA) showed a linearly decreasing pattern (P < 0.05) with the increasing of CBC inclusion. However, proportions of trans-vaccenic acid, rumenic acid, total monounsaturated FA, and odd- and branched-chain FAs increased linearly (P < 0.05). On the opposite, total saturated FA (SFA) and the n-6:n-3 FA ratio in milk fat decreased linearly (P < 0.01). Hence, replacement of corn meal with CBC up to 80% in the supplement decreases nutrient intake and digestibility, as well as milk yield response in grazing dairy cows. However, CBC inclusion may enhance the nutritional properties of milk fat.
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Affiliation(s)
| | - Dayana Lima Maciel
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
| | | | - Daiany Iris Gomes
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
| | - Raylon Pereira Maciel
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
| | - Rafael Mezzomo
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
| | - Marco Antônio Sundfeld da Gama
- Embrapa Gado de Leite, Av. Eugênio do Nascimento, 610 - Aeroporto Dom Bosco, Juiz de Fora, Minas Gerais, 36038-330, Brazil
| | | | | | - Kariane da Silva Pereira
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
| | - Kaliandra Souza Alves
- Universidade Federal Rural da Amazônia (UFRA), PA 275, S/N, Zona Rural, 66515-000, Belém, Brazil
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9
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Choi WS, Xu X, Goruk S, Wang Y, Patel S, Chow M, Field CJ, Godbout R. FABP7 Facilitates Uptake of Docosahexaenoic Acid in Glioblastoma Neural Stem-like Cells. Nutrients 2021; 13:2664. [PMID: 34444824 PMCID: PMC8402214 DOI: 10.3390/nu13082664] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/26/2021] [Accepted: 07/29/2021] [Indexed: 01/14/2023] Open
Abstract
Glioblastoma (GBM) is an aggressive tumor with a dismal prognosis. Neural stem-like cells contribute to GBM's poor prognosis by driving drug resistance and maintaining cellular heterogeneity. GBM neural stem-like cells express high levels of brain fatty acid-binding protein (FABP7), which binds to polyunsaturated fatty acids (PUFAs) ω-6 arachidonic acid (AA) and ω-3 docosahexaenoic acid (DHA). Similar to brain, GBM tissue is enriched in AA and DHA. However, DHA levels are considerably lower in GBM tissue compared to adult brain. Therefore, it is possible that increasing DHA content in GBM, particularly in neural stem-like cells, might have therapeutic value. Here, we examine the fatty acid composition of patient-derived GBM neural stem-like cells grown as neurosphere cultures. We also investigate the effect of AA and DHA treatment on the fatty acid profiles of GBM neural stem-like cells with or without FABP7 knockdown. We show that DHA treatment increases DHA levels and the DHA:AA ratio in GBM neural stem-like cells, with FABP7 facilitating the DHA uptake. We also found that an increased uptake of DHA inhibits the migration of GBM neural stem-like cells. Our results suggest that increasing DHA content in the GBM microenvironment may reduce the migration/infiltration of FABP7-expressing neural stem-like cancer cells.
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Affiliation(s)
- Won-Shik Choi
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada; (W.-S.C.); (X.X.); (Y.W.); (S.P.)
| | - Xia Xu
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada; (W.-S.C.); (X.X.); (Y.W.); (S.P.)
| | - Susan Goruk
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2E1, Canada; (S.G.); (C.J.F.)
| | - Yixiong Wang
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada; (W.-S.C.); (X.X.); (Y.W.); (S.P.)
| | - Samir Patel
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada; (W.-S.C.); (X.X.); (Y.W.); (S.P.)
| | - Michael Chow
- Department of Surgery, University of Alberta, Edmonton, AB T6G 2B7, Canada;
| | - Catherine J. Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2E1, Canada; (S.G.); (C.J.F.)
| | - Roseline Godbout
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada; (W.-S.C.); (X.X.); (Y.W.); (S.P.)
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10
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Fuentes NR, Salinas ML, Wang X, Fan YY, Chapkin RS. Assessment of Plasma Membrane Fatty Acid Composition and Fluidity Using Imaging Flow Cytometry. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2021; 2262:251-258. [PMID: 33977481 DOI: 10.1007/978-1-0716-1190-6_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Phospholipid fatty acid (FA) composition influences the biophysical properties of the plasma membrane and plays an important role in cellular signaling. Our previous work has demonstrated that plasma membrane fatty acid composition is an important determinant of oncogenic Ras signaling and that dietary (exogenous) modulation of membrane composition may underlie the chemoprotective benefits of long chain n-3 polyunsaturated fatty acids (PUFA). In this chapter, we describe in vitro methods to modulate membrane phospholipid fatty acid composition of cultured cells using fatty acids complexed to bovine serum albumin (BSA). Furthermore, we describe a method to quantify the biophysical properties of plasma membranes in live cells using Di-4-ANEPPDHQ (Di4) and image-based flow cytometry.
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Affiliation(s)
- Natividad R Fuentes
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
- Department of Nutrition, Texas A&M University, College Station, TX, USA
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX, USA
| | - Michael L Salinas
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
- Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Xiaoli Wang
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
- Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Yang-Yi Fan
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
- Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Robert S Chapkin
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA.
- Department of Nutrition, Texas A&M University, College Station, TX, USA.
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX, USA.
- Center for Environmental Health Research, Texas A&M University, College Station, TX, USA.
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11
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Xu X, Wang Y, Choi WS, Sun X, Godbout R. Super resolution microscopy reveals DHA-dependent alterations in glioblastoma membrane remodelling and cell migration. NANOSCALE 2021; 13:9706-9722. [PMID: 34018532 DOI: 10.1039/d1nr02128a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Brain fatty acid binding protein (FABP7; B-FABP) promotes glioblastoma (GBM) cell migration and is associated with tumor infiltration, properties associated with a poor prognosis in GBM patients. FABP7-expressing neural stem-like cells are known to drive tumor migration/infiltration and resistance to treatment. We have previously shown that FABP7's effects on cell migration can be reversed when GBM cells are cultured in medium supplemented with the omega-3 fatty acid, docosahexaenoic acid (DHA). Here, we use super-resolution imaging on patient-derived GBM stem-like cells to examine the importance of FABP7 and its fatty acid ligands in mitigating GBM cell migration. As FABPs are involved in fatty acid transport from membrane to cytosol, we focus on the effect of FABP7 and its ligand DHA on GBM membrane remodeling, as well as FABP7 nanoscale domain formation on GBM membrane. Using quantitative plasma membrane lipid order imaging, we show that FABP7 expression in GBM cells correlates with increased membrane lipid order, with DHA dramatically decreasing lipid order. Using super-resolution stimulated emission depletion (STED) microscopy, we observe non-uniform distribution of FABP7 on the surface of GBM cells, with FABP7 forming punctate nanoscale domains of ∼100 nm in diameter. These nanodomains are particularly enriched at the migrating front of GBM cells. Interestingly, FABP7 nanodomains are disrupted when GBM cells are cultured in DHA-supplemented medium. We demonstrate a tight link between cell migration, a higher membrane lipid order and increased FABP7 nanoscale domains. We propose that DHA-mediated disruption of membrane lipid order and FABP7 nanodomains forms the basis of FABP7/DHA-mediated inhibition of cell migration in GBM.
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Affiliation(s)
- Xia Xu
- Cross Cancer Institute, University of Alberta, Department of Oncology, 11560 University Avenue, Edmonton, Alberta, Canada.
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12
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Pfister E, Smith R, Lane MA. N-3 Polyunsaturated fatty acid ethyl esters decrease the invasion, but not the proliferation, of human colorectal cancer cells via a PI3K-dependent mechanism in vitro. Prostaglandins Leukot Essent Fatty Acids 2021; 167:102273. [PMID: 33812216 DOI: 10.1016/j.plefa.2021.102273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/18/2021] [Accepted: 03/22/2021] [Indexed: 01/16/2023]
Abstract
N-3 polyunsaturated fatty acid (PUFA) ethyl esters have been approved by the FDA for the treatment of dyslipidemia and are promising cancer therapeutics. The study objectives were to determine if and how n-3 PUFA ethyl esters affected the proliferation and invasion of colorectal cancer cells. SW620 and HCT-116 parental and HCT-116 mutant cells isogenic for constitutively active PI3K were treated with free or ethyl esterified n-3 PUFAs and counted 72 h later. Cells were also administered n-3 PUFA ethyl esters to determine if these compounds decreased invasion through Boyden chambers and PI3K activity via western blot analysis of phosphorylated Akt. Free and n-3 PUFA ethyl esters decreased the proliferation of all cell lines. The invasion and Akt phosphorylation of both parental cell lines was decreased following treatment but this did not occur in mutant cells. The ability of n-3 PUFA ethyl esters to decrease proliferation and invasion in vitro indicates these compounds may be effective in vivo.
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Affiliation(s)
- Eric Pfister
- Nutrition and Foods Program, School of Family and Consumer Sciences, Texas State University, 601 University Dr., San Marcos, TX, USA, 78666
| | - Rebecca Smith
- Nutrition and Foods Program, School of Family and Consumer Sciences, Texas State University, 601 University Dr., San Marcos, TX, USA, 78666
| | - Michelle A Lane
- Nutrition and Foods Program, School of Family and Consumer Sciences, Texas State University, 601 University Dr., San Marcos, TX, USA, 78666.
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Chiu CF, Hsu MI, Yeh HY, Park JM, Shen YS, Tung TH, Huang JJ, Wu HT, Huang SY. Eicosapentaenoic Acid Inhibits KRAS Mutant Pancreatic Cancer Cell Growth by Suppressing Hepassocin Expression and STAT3 Phosphorylation. Biomolecules 2021; 11:biom11030370. [PMID: 33801246 PMCID: PMC8001293 DOI: 10.3390/biom11030370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/12/2021] [Accepted: 02/24/2021] [Indexed: 12/31/2022] Open
Abstract
Background: The oncogenic Kirsten rat sarcoma viral oncogene homolog (KRAS) mutation was reported to be the signature genetic event in most cases of pancreatic ductal adenocarcinoma (PDAC). Hepassocin (HPS/FGL1) is involved in regulating lipid metabolism and the progression of several cancer types; however, the underlying mechanism of HPS/FGL1 in the KRAS mutant PDAC cells undergoing eicosapentaenoic acid (EPA) treatment remains unclear. Methods: We measured HPS/FGL1 protein expressions in a human pancreatic ductal epithelial (HPNE) normal pancreas cell line, a KRAS-wild-type PDAC cell line (BxPC-3), and KRAS-mutant PDAC cell lines (PANC-1, MIA PaCa-2, and SUIT-2) by Western blot methods. HEK293T cells were transiently transfected with corresponding KRAS-expressing plasmids to examine the level of HPS expression with KRAS activation. We knocked-down HPS/FGL1 using lentiviral vectors in SUIT-2 cells and measured the cell viability by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and clonogenicity assays. Furthermore, a lipidomic analysis was performed to profile changes in lipid metabolism after HPS/FGL1 knockdown. Results: We found that the HPS/FGL1 level was significantly upregulated in KRAS-mutated PDAC cells and was involved in KRAS/phosphorylated (p)-signal transduction and activator of transcription 3 (STAT3) signaling, and the knockdown of HPS/FGL1 in SUIT-2 cells decreased cell proliferation through increasing G2/M cell cycle arrest and cyclin B1 expression. In addition, the knockdown of HPS/FGL1 in SUIT-2 cells significantly increased omega-3 polyunsaturated fatty acids (PUFAs) and EPA production but not docosahexaenoic acid (DHA). Moreover, EPA treatment in SUIT-2 cells reduced the expression of de novo lipogenic protein, acetyl coenzyme A carboxylase (ACC)-1, and decreased p-STAT3 and HPS/FGL1 expressions, resulting in the suppression of cell viability. Conclusions: Results of this study indicate that HPS is highly expressed by KRAS-mutated PDAC cells, and HPS/FGL1 plays a crucial role in altering lipid metabolism and increasing cell growth in pancreatic cancer. EPA supplements could potentially inhibit or reduce ACC-1-involved lipogenesis and HPS/FGL1-mediated cell survival in KRAS-mutated pancreatic cancer cells.
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Affiliation(s)
- Ching-Feng Chiu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (M.-I.H.); (J.M.P.)
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Ming-I Hsu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (M.-I.H.); (J.M.P.)
- Department of Obstetrics and Gynecology, Wan Fang Hospital, Taipei Medical University, Taipei 11031, Taiwan
| | - Hsiu-Yen Yeh
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.Y.); (Y.-S.S.); (T.-H.T.)
| | - Ji Min Park
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (M.-I.H.); (J.M.P.)
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.Y.); (Y.-S.S.); (T.-H.T.)
| | - Yu-Shiuan Shen
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.Y.); (Y.-S.S.); (T.-H.T.)
| | - Te-Hsuan Tung
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.Y.); (Y.-S.S.); (T.-H.T.)
| | - Jun-Jie Huang
- Diet and Nutrition Department, Shuang Ho Hospital, Taipei Medical University, New Taipei 23561, Taiwan;
| | - Hung-Tsung Wu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (M.-I.H.); (J.M.P.)
- Correspondence: (H.-T.W.); (S.-Y.H.)
| | - Shih-Yi Huang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (M.-I.H.); (J.M.P.)
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.Y.); (Y.-S.S.); (T.-H.T.)
- Correspondence: (H.-T.W.); (S.-Y.H.)
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Membrane therapy using DHA suppresses epidermal growth factor receptor signaling by disrupting nanocluster formation. J Lipid Res 2021; 62:100026. [PMID: 33515553 PMCID: PMC7933808 DOI: 10.1016/j.jlr.2021.100026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 01/11/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
Epidermal growth factor receptor (EGFR) signaling drives the formation of many types of cancer, including colon cancer. Docosahexaenoic acid (DHA, 22∶6Δ4,7,10,13,16,19), a chemoprotective long-chain n-3 polyunsaturated fatty acid suppresses EGFR signaling. However, the mechanism underlying this phenotype remains unclear. Therefore, we used super-resolution microscopy techniques to investigate the mechanistic link between EGFR function and DHA-induced alterations to plasma membrane nanodomains. Using isogenic in vitro (YAMC and IMCE mouse colonic cell lines) and in vivo (Drosophila, wild type and Fat-1 mice) models, cellular DHA enrichment via therapeutic nanoparticle delivery, endogenous synthesis, or dietary supplementation reduced EGFR-mediated cell proliferation and downstream Ras/ERK signaling. Phospholipid incorporation of DHA reduced membrane rigidity and the size of EGFR nanoclusters. Similarly, pharmacological reduction of plasma membrane phosphatidic acid (PA), phosphatidylinositol-4,5-bisphosphate (PIP2) or cholesterol was associated with a decrease in EGFR nanocluster size. Furthermore, in DHA-treated cells only the addition of cholesterol, unlike PA or PIP2, restored EGFR nanoscale clustering. These findings reveal that DHA reduces EGFR signaling in part by reshaping EGFR proteolipid nanodomains, supporting the feasibility of using membrane therapy, i.e., dietary/drug-related strategies to target plasma membrane organization, to reduce EGFR signaling and cancer risk.
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Chen Y, Qiu X, Yang J. Comparing the In Vitro Antitumor, Antioxidant and Anti-Inflammatory Activities between Two New Very Long Chain Polyunsaturated Fatty Acids, Docosadienoic Acid (DDA) and Docosatrienoic Acid (DTA), and Docosahexaenoic Acid (DHA). Nutr Cancer 2020; 73:1697-1707. [PMID: 32781843 DOI: 10.1080/01635581.2020.1804949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Very long chain polyunsaturated fatty acids (VLCPUFAs) are widely used as nutraceutical supplements for human health. Recently, a high level of two new VLCPUFAs, docosadienoic acid (DDA, 22:2n-6) and docosatrienoic acid (DTA, 22:3n-3), was produced in oilseed crop Brassica carinata using a biotechnology approach. This study investigated the functional properties of these two VLCPUFAs in human cells. Compared to docosahexaenoic acid (DHA), the golden standard in evaluating the health-promoting activities of VLCPUFAs, both DDA and DTA exhibited comparable or even better antitumor and antioxidant effects against human breast cancer SK-BR-3 and MDA-MB-231 cells. Especially, DTA elicited much stronger antioxidant and pro-apoptotic effects than DHA. Furthermore, DDA and DTA showed strong anti-inflammatory effects in human macrophages differentiated from monocyte THP-1 cells through lowering the protein expression levels of pro-inflammatory cytokines interleukin-1β (IL-1β), interleukin-6 (IL-6), interferon γ (IFN-γ), monocyte chemoattractant protein-1 (MCP-1) and tumor necrosis factor α (TNF-α). Future In Vivo and In Vivo studies are warranted to identify the mechanism of action (MOA) for the antitumor, antioxidant and anti-inflammatory functions of DDA and DTA and explore potential applications of these two VLCPUFAs as novel nutraceutical supplements in preventing inflammatory conditions, aging and even cancer.
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Affiliation(s)
- Yi Chen
- Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Xiao Qiu
- Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Jian Yang
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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16
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Cai Y, Liu J, Cai SK, Miao EY, Jia CQ, Fan YZ, Li YB. Eicosapentaenoic acid's metabolism of 15-LOX-1 promotes the expression of miR-101 thus inhibits Cox2 pathway in colon cancer. Onco Targets Ther 2020; 13:5605-5616. [PMID: 32606775 PMCID: PMC7305347 DOI: 10.2147/ott.s237562] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/06/2020] [Indexed: 12/16/2022] Open
Abstract
Purpose It is well known that diet Eicosapentaenoic acid (EPA) is beneficial to colon cancer (CC). However, the underlying molecular mechanisms of EPA-relating miRNAs on genesis and development of this area is still unclear. Materials and Methods This study tries to find the function and specific role of EPA in CC through quantitative PCR (qPCR), Western blotting, immunofluorescence (IF), mass spectrometry, and immunohistochemistry (IHC) assays. By these methods, the enrichment of 15-LOX-1 metabolites of EPA, the expression of miR-101 and Cox2, and the relationship among them in CC are measured. Results The quantity of miR-101 was obviously suppressed in CC tissues and SW480 cells. After application of miR-101 mimics in CC cell lines, the Cox2 expression was inhibited too. Next, we confirmed that EPA could increase the expression of miR-101 induced by 15-LOX-1. Finally, we tested whether EPA functions as a regulator of miR-101 via the production of resolvin E3. Conclusion Our data demonstrate that the EPA–15-LOX-1–miR-101-Cox2 signaling pathway owns a crucial position in the pathogenesis and development of diet-related CC. These findings exert exciting meanings for presenting new therapeutic angles in CC.
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Affiliation(s)
- Yi Cai
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Jie Liu
- Department of Pathology, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Shao-Kang Cai
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Er-Ya Miao
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Cheng-Qian Jia
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yong-Zhi Fan
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Ying-Bo Li
- Department of Pain Management, The Center Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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Abstract
Diet is an important risk factor for colorectal cancer (CRC), and several dietary constituents implicated in CRC are modified by gut microbial metabolism. Microbial fermentation of dietary fiber produces short-chain fatty acids, e.g., acetate, propionate, and butyrate. Dietary fiber has been shown to reduce colon tumors in animal models, and, in vitro, butyrate influences cellular pathways important to cancer risk. Furthermore, work from our group suggests that the combined effects of butyrate and omega-3 polyunsaturated fatty acids (n-3 PUFA) may enhance the chemopreventive potential of these dietary constituents. We postulate that the relatively low intakes of n-3 PUFA and fiber in Western populations and the failure to address interactions between these dietary components may explain why chemoprotective effects of n-3 PUFA and fermentable fibers have not been detected consistently in prospective cohort studies. In this review, we summarize the evidence outlining the effects of n-3 long-chain PUFA and highly fermentable fiber with respect to alterations in critical pathways important to CRC prevention, particularly intrinsic mitochondrial-mediated programmed cell death resulting from the accumulation of lipid reactive oxygen species (ferroptosis), and epigenetic programming related to lipid catabolism and beta-oxidation-associated genes.
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18
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Wierenga KA, Wee J, Gilley KN, Rajasinghe LD, Bates MA, Gavrilin MA, Holian A, Pestka JJ. Docosahexaenoic Acid Suppresses Silica-Induced Inflammasome Activation and IL-1 Cytokine Release by Interfering With Priming Signal. Front Immunol 2019; 10:2130. [PMID: 31616405 PMCID: PMC6763728 DOI: 10.3389/fimmu.2019.02130] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/23/2019] [Indexed: 12/16/2022] Open
Abstract
Occupational exposure to respirable crystalline silica (cSiO2) has been etiologically linked to human autoimmunity. Intranasal instillation with cSiO2 triggers profuse inflammation in the lung and onset of autoimmunity in lupus-prone mice; however, dietary supplementation with the omega-3 polyunsaturated fatty acid docosahexaenoic acid (DHA) abrogates these responses. Inflammasome activation, IL-1 cytokine release, and death in alveolar macrophages following cSiO2 exposure are early and critical events that likely contribute to triggering premature autoimmune pathogenesis by this particle. Here we tested the hypothesis that DHA suppresses cSiO2-induced NLRP3 inflammasome activation, IL-1 cytokine release, and cell death in the macrophage. The model used was the murine macrophage RAW 264.7 cell line stably transfected with the inflammasome adapter protein ASC (RAW-ASC). Following priming with LPS, both the canonical activator nigericin and cSiO2 elicited robust inflammasome activation in RAW-ASC cells, as reflected by IL-1β release and caspase-1 activation. These responses were greatly diminished or absent in wild-type RAW cells. In contrast to IL-1β, cSiO2 induced IL-1α release in both RAW-ASC and to a lesser extent in RAW-WT cells after LPS priming. cSiO2-driven effects in RAW-ASC cells were confirmed in bone-marrow derived macrophages. Pre-incubating RAW-ASC cells with 10 and 25 μM DHA for 24 h enriched this fatty acid in the phospholipids by 15- and 25-fold, respectively, at the expense of oleic acid. DHA pre-incubation suppressed inflammasome activation and release of IL-1β and IL-1α by nigericin, cSiO2, and two other crystals - monosodium urate and alum. DHA's suppressive effects were linked to inhibition of LPS-induced Nlrp3, Il1b, and Il1a transcription, potentially through the activation of PPARγ. Finally, nigericin-induced death was inflammasome-dependent, indicative of pyroptosis, and could be inhibited by DHA pretreatment. In contrast, cSiO2-induced death was inflammasome-independent and not inhibited by DHA. Taken together, these findings indicate that DHA suppresses cSiO2-induced inflammasome activation and IL-1 cytokine release in macrophages by acting at the level of priming, but was not protective against cSiO2-induced cell death.
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Affiliation(s)
- Kathryn A Wierenga
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Josephine Wee
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Kristen N Gilley
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Lichchavi D Rajasinghe
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Melissa A Bates
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Mikhail A Gavrilin
- Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University, Columbus, OH, United States
| | - Andrij Holian
- Department of Biomedical and Pharmaceutical Sciences, Center for Environmental Health Sciences, University of Montana, Missoula, MT, United States
| | - James J Pestka
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
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19
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Salinas ML, Fuentes NR, Choate R, Wright RC, McMurray DN, Chapkin RS. AdipoRon Attenuates Wnt Signaling by Reducing Cholesterol-Dependent Plasma Membrane Rigidity. Biophys J 2019; 118:885-897. [PMID: 31630812 DOI: 10.1016/j.bpj.2019.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/28/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023] Open
Abstract
The increasing prevalence of adult and adolescent obesity and its associated risk of colorectal cancer reinforces the urgent need to elucidate the underlying mechanisms contributing to the promotion of colon cancer in obese individuals. Adiponectin is an adipose tissue-derived adipokine, whose levels are reduced during obesity. Both epidemiological and preclinical data indicate that adiponectin suppresses colon tumorigenesis. We have previously demonstrated that both adiponectin and AdipoRon, a small-molecule adiponectin receptor agonist, suppress colon cancer risk in part by reducing the number of Lgr5+ stem cells in mouse colonic organoids. However, the mechanism by which the adiponectin signaling pathway attenuates colon cancer risk remains to be addressed. Here, we have hypothesized that adiponectin signaling supports colonic stem cell maintenance through modulation of the biophysical properties of the plasma membrane (PM). Specifically, we investigated the effects of adiponectin receptor activation by AdipoRon on the biophysical perturbations linked to the attenuation of Wnt-driven signaling and cell proliferation as determined by LEF luciferase reporter assay and colonic organoid proliferation, respectively. Using physicochemical sensitive dyes, Di-4-ANEPPDHQ and C-laurdan, we demonstrated that AdipoRon decreased the rigidity of the colonic cell PM. The decrease in membrane rigidity was associated with a reduction in PM free cholesterol levels and the intracellular accumulation of free cholesterol in lysosomes. These results suggest that adiponectin signaling plays a role in modulating cellular cholesterol homeostasis, PM biophysical properties, and Wnt-driven signaling. These findings are noteworthy because they may in part explain how obesity drives colon cancer progression.
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Affiliation(s)
- Michael L Salinas
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, Texas; Department of Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - Natividad R Fuentes
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, Texas; Department of Nutrition and Food Science, Texas A&M University, College Station, Texas; Interdisciplinary Faculty of Toxicology Program, Texas A&M University, College Station, Texas
| | - Rachel Choate
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas
| | - Rachel C Wright
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, Texas; Department of Nutrition and Food Science, Texas A&M University, College Station, Texas
| | - David N McMurray
- Department of Microbial Pathogenesis and Immunology, Texas A&M University, College Station, Texas
| | - Robert S Chapkin
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, Texas; Department of Nutrition and Food Science, Texas A&M University, College Station, Texas; Interdisciplinary Faculty of Toxicology Program, Texas A&M University, College Station, Texas; Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas; Department of Microbial Pathogenesis and Immunology, Texas A&M University, College Station, Texas; Center for Environmental Health Research, Texas A&M University, College Station, Texas.
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20
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Elisia I, Cho B, Hay M, Li MY, Hofs E, Lam V, Dyer RA, Lum J, Krystal G. The effect of diet and exercise on tobacco carcinogen-induced lung cancer. Carcinogenesis 2019; 40:448-460. [PMID: 30874285 DOI: 10.1093/carcin/bgz060] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/26/2019] [Accepted: 03/12/2019] [Indexed: 12/16/2022] Open
Abstract
In previous studies, we found that low-carbohydrate (CHO) diets reduced the incidence of tumors in mice genetically predisposed to cancer. However, because >90% of human cancers arise via carcinogen-induced somatic mutations, we investigated, herein, the role that different types and levels of CHO, protein and lipid play in lung cancer induced by the tobacco-specific carcinogen, nicotine-derived nitrosamine ketone (NNK) in A/J mice. We found lowering CHO levels significantly reduced lung nodules and blood glucose levels. We also found that soy protein was superior to casein and that coconut oil was ineffective at reducing lung nodules. Diets containing amylose or inulin (at 15% of total calories), soy protein (at 35%) and fat (at 50%, 30% being fish oil) were the most effective at reducing lung nodules. These fish oil-containing diets increased plasma levels of the ketone body, β-hydroxybutyrate, while reducing both insulin and 8-isoprostane in plasma and bronchoalveolar interleukin-12 and lung PGE2 levels. After only 2 weeks on this diet, the levels of γ-H2AX were significantly reduced, 24 hours after NNK treatment. Housing these mice in two-tiered rat cages with exercise wheels led to similar mouse weights on the different diets, whereas keeping mice in standard mouse cages led to both significant weight differences between the low-CHO, soy protein, fish oil diet and Western diet and substantially more lung nodules than in the two-tiered cages. Our results suggest that low-CHO, soy protein, fish oil-containing diets, together with exercise, may reduce the incidence of lung cancer.
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Affiliation(s)
- Ingrid Elisia
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Brandon Cho
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Mariah Hay
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Michael Yu Li
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Elyse Hofs
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Vivian Lam
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
| | - Roger A Dyer
- B.C. Children's Hospital, Vancouver, British Columbia, Canada
| | - Julian Lum
- Trev and Joyce Deeley Research Centre, BC Cancer Agency and Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Gerald Krystal
- The Terry Fox Laboratory, British Columbia Cancer Center, Vancouver, British Columbia, Canada
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21
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Ni H, Chen L, Song L, Sun L, Cui H, Zhou Q, Hu C, Jiao W, Shen T, Gao T, Liu Y, Li J. ErbB4 acts as a suppressor in colitis and its associated carcinoma by negatively regulating cholesterol metabolism. Carcinogenesis 2018; 40:680-686. [PMID: 30452622 DOI: 10.1093/carcin/bgy164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 10/24/2018] [Accepted: 11/14/2018] [Indexed: 12/16/2022] Open
Abstract
AbstractPreviously we reported that ErbB4 played a protective role in chronic liver injury and hepatocellular carcinoma. Herein, we examined the role of ErbB4 in the development of colitis-associated cancer (CAC) in ErbB4 knockout mice models, in vitro cell lines and clinical samples. We found that ErbB4 deficiency may lead to more severe inflammation, slower recovery and the development of CAC. Further, loss of ErbB4 could activate Kras by upregulating rate-limiting enzymes in cholesterol metabolism pathway through interacting with the transcription factor Srebf1. In clinic samples, ErbB4 is downregulated in colonic tissues from patients with Crohn’s disease. And data from The Cancer Genome Atlas also showed significant negative correlation between ErbB4 and several cholesterol metabolic enzymes. In summary, our study uncovers ErbB4 as a protector in the development of CAC, for its loss could activate Kras by upregulating cholesterol metabolism.
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Affiliation(s)
- Hengli Ni
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Lin Chen
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
- Department of Pathology, Huizhou Health Sciences Polytechnic, Huizhou, People’s Republic of China
| | - Liming Song
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
- Department of Basic Medicine, School of Medicine, Hubei Three Gorges Polytechnic, Yichang, People’s Republic of China
| | - Lina Sun
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Hongxia Cui
- Department of Pathology, Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Qun Zhou
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Caihong Hu
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Weijuan Jiao
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Tong Shen
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Tianming Gao
- Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People’s Republic of China
| | - Yao Liu
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
- Department of Pathology, Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, People’s Republic of China
| | - Jianming Li
- Department of Pathology, Medical College of Soochow University, Soochow University, Suzhou, People’s Republic of China
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
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Bile acids target proteolipid nano-assemblies of EGFR and phosphatidic acid in the plasma membrane for stimulation of MAPK signaling. PLoS One 2018; 13:e0198983. [PMID: 30169511 PMCID: PMC6118352 DOI: 10.1371/journal.pone.0198983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/17/2018] [Indexed: 01/08/2023] Open
Abstract
Bile acids are critical biological detergents in the gastrointestinal tract and also act as messengers to regulate a multitude of intracellular signaling events, including mitogenic signaling, lipid metabolism and endo/exocytosis. In particular, bile acids stimulate many receptors and ion channels on the cell surface, the mechanisms of which are still poorly understood. Membrane-associating proteins depend on the local spatial distribution of lipids in the plasma membrane (PM) for their function. Here, we report that the highly amphipathic secondary bile acid deoxycholic acid (DCA), a major constituent in the human bile, at doses <1μM enhances the nanoclustering and the PM localization of phosphatidic acid (PA) but disrupts the local segregation of phosphatidylserine in the basolateral PM of the human colorectal adenocarcinoma Caco-2 cells. PA is a key structural component of the signaling nano-domains of epidermal growth factor receptor (EGFR) on the cell surface. We show that DCA promotes the co-localization between PA and EGFR, the PA-driven EGFR dimerization/oligomerization and EGFR signaling. Depletion of PA abolishes the stimulatory effects of DCA on the EGFR oligomerization and signaling. This effect occurs in the cultured Caco-2 cells and the ex vivo human intestinal enteroids. We propose a novel mechanism, where the amphiphilic DCA monomers alter the nano-assemblies of anionic phospholipids and in turn change the dynamic structural integrity of the lipid-driven oligomerization of cell surface receptors and their signal transduction.
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