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Yang T, Tang S, Feng J, Yan X. Lipid Isobaric Mass Tagging for Enhanced Relative Quantification of Unsaturated sn-Positional Isomers. ACS MEASUREMENT SCIENCE AU 2024; 4:213-222. [PMID: 38645577 PMCID: PMC11027206 DOI: 10.1021/acsmeasuresciau.3c00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/14/2023] [Accepted: 12/27/2023] [Indexed: 04/23/2024]
Abstract
Changes in the levels of lipid sn-positional isomers are associated with perturbation of the physiological environment within the biological system. Consequently, knowing the concentrations of these lipids holds significant importance for unraveling their involvement in disease diagnosis and pathological mechanisms. However, existing methods for lipid quantification often fall short in accuracy due to the structural diversity and isomeric forms of lipids. To address this challenge, we have developed an aziridine-based isobaric tag labeling strategy that allows (i) differentiation and (ii) enhanced relative quantification of lipid sn-positional isomers from distinct samples in a single run. The methodology enabled by aziridination, isobaric tag labeling, and lithiation has been applied to various phospholipids, enabling the determination of the sn-positions of fatty acyl chains and enhanced relative quantification. The analysis of Escherichia coli lipid extracts demonstrated the enhanced determination of the concentration ratios of lipid isomers by measuring the intensity ratios of mass reporters released from sn-positional diagnostic ions. Moreover, we applied the method to the analysis of human colon cancer plasma. Intriguingly, 17 PC lipid sn-positional isomers were identified and quantified simultaneously, and among them, 7 showed significant abundance changes in the colon cancer plasma, which can be used as potential plasma markers for diagnosis of human colon cancer.
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Affiliation(s)
- Tingyuan Yang
- Department
of Chemistry, Texas A&M University, 580 Ross Street, College Station, Texas 77843, United States
| | - Shuli Tang
- Department
of Chemistry, Texas A&M University, 580 Ross Street, College Station, Texas 77843, United States
| | - Jiaxin Feng
- Department
of Chemistry, Texas A&M University, 580 Ross Street, College Station, Texas 77843, United States
| | - Xin Yan
- Department
of Chemistry, Texas A&M University, 580 Ross Street, College Station, Texas 77843, United States
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Shorer O, Yizhak K. Metabolic predictors of response to immune checkpoint blockade therapy. iScience 2023; 26:108188. [PMID: 37965137 PMCID: PMC10641254 DOI: 10.1016/j.isci.2023.108188] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/23/2023] [Accepted: 10/10/2023] [Indexed: 11/16/2023] Open
Abstract
Metabolism of immune cells in the tumor microenvironment (TME) plays a critical role in cancer patient response to immune checkpoint inhibitors (ICI). Yet, a metabolic characterization of immune cells in the TME of patients treated with ICI is lacking. To bridge this gap we performed a semi-supervised analysis of ∼1700 metabolic genes using single-cell RNA-seq data of > 1 million immune cells from ∼230 samples of cancer patients treated with ICI. When clustering cells based on their metabolic gene expression, we found that similar immunological cellular states are found in different metabolic states. Most importantly, we found metabolic states that are significantly associated with patient response. We then built a metabolic predictor based on a dozen gene signature, which significantly differentiates between responding and non-responding patients across different cancer types (AUC = 0.8-0.92). Taken together, our results demonstrate the power of metabolism in predicting patient response to ICI.
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Affiliation(s)
- Ofir Shorer
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3525422, Israel
| | - Keren Yizhak
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3525422, Israel
- The Taub Faculty of Computer Science, Technion - Israel Institute of Technology, Haifa 3200003, Israel
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3
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von Gerichten J, West AL, Irvine NA, Miles EA, Calder PC, Lillycrop KA, Burdge GC, Fielding BA. Oxylipin secretion by human CD3 + T lymphocytes in vitro is modified by the exogenous essential fatty acid ratio and life stage. Front Immunol 2023; 14:1206733. [PMID: 37388745 PMCID: PMC10300345 DOI: 10.3389/fimmu.2023.1206733] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 05/30/2023] [Indexed: 07/01/2023] Open
Abstract
Immune function changes across the life stages; for example, senior adults exhibit a tendency towards a weaker cell-mediated immune response and a stronger inflammatory response than younger adults. This might be partly mediated by changes in oxylipin synthesis across the life course. Oxylipins are oxidation products of polyunsaturated fatty acids (PUFAs) that modulate immune function and inflammation. A number of PUFAs are precursors to oxylipins, including the essential fatty acids (EFAs) linoleic acid (LA) and α-linolenic acid (ALA). LA and ALA are also substrates for synthesis of longer chain PUFAs. Studies with stable isotopes have shown that the relative amounts of LA and ALA can influence their partitioning by T lymphocytes between conversion to longer chain PUFAs and to oxylipins. It is not known whether the relative availability of EFA substrates influences the overall pattern of oxylipin secretion by human T cells or if this changes across the life stages. To address this, the oxylipin profile was determined in supernatants from resting and mitogen activated human CD3+ T cell cultures incubated in medium containing an EFA ratio of either 5:1 or 8:1 (LA : ALA). Furthermore, oxylipin profiles in supernatants of T cells from three life stages, namely fetal (derived from umbilical cord blood), adults and seniors, treated with the 5:1 EFA ratio were determined. The extracellular oxylipin profiles were affected more by the EFA ratio than mitogen stimulation such that n-3 PUFA-derived oxylipin concentrations were higher with the 5:1 EFA ratio than the 8:1 ratio, possibly due to PUFA precursor competition for lipoxygenases. 47 oxylipin species were measured in all cell culture supernatants. Extracellular oxylipin concentrations were generally higher for fetal T cells than for T cells from adult and senior donors, although the composition of oxylipins was similar across the life stages. The contribution of oxylipins towards an immunological phenotype might be due to the capacity of T cells to synthesize oxylipins rather than the nature of the oxylipins produced.
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Affiliation(s)
- Johanna von Gerichten
- School of Chemistry and Chemical Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
| | - Annette L. West
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Nicola A. Irvine
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Elizabeth A. Miles
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Philip C. Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, Hampshire, United Kingdom
- NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, Hampshire, United Kingdom
| | - Karen A. Lillycrop
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Graham C. Burdge
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, Hampshire, United Kingdom
- NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, Hampshire, United Kingdom
| | - Barbara A. Fielding
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
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4
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Biam RS, Robichaud PP, Mbarik M, Pineau P, Surette ME. Loss of detection of fatty acid-metabolizing proteins in Western blot analyses – Impact of sample heating. Biochem Biophys Res Commun 2022; 607:110-116. [DOI: 10.1016/j.bbrc.2022.03.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 03/23/2022] [Indexed: 11/30/2022]
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5
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Shimizu H, Usui Y, Wakita R, Aita Y, Tomita A, Tsubota K, Asakage M, Nezu N, Komatsu H, Umazume K, Sugimoto M, Goto H. Differential Tissue Metabolic Signatures in IgG4-Related Ophthalmic Disease and Orbital Mucosa-Associated Lymphoid Tissue Lymphoma. Invest Ophthalmol Vis Sci 2021; 62:15. [PMID: 33439228 PMCID: PMC7814356 DOI: 10.1167/iovs.62.1.15] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Purpose To identify tissue metabolomic profiles in biopsy specimens with IgG4-related ophthalmic disease (IgG4-ROD) and mucosa-associated lymphoid tissue (MALT) lymphoma and investigate their potential implication in the disease pathogenesis and biomarkers. Methods We conducted a comprehensive analysis of the metabolomes and lipidomes of biopsy-proven IgG4-ROD (n = 22) and orbital MALT lymphoma (n = 21) specimens and matched adjacent microscopically normal adipose tissues using liquid chromatography time-of-flight mass spectrometry. The altered metabolomic profiles were visualized by heat map and principal component analysis. Metabolic pathway analysis was performed by Metabo Analyst 4.0 using differentially expressed metabolites. The diagnostic performance of the metabolic markers was evaluated using receiver operating characteristic curves. Machine learning algorithms were implemented by random forest using the R environment. Finally, an independent set of 18 IgG4-ROD and 17 orbital MALT lymphoma specimens were used to validate the identified biomarkers. Results The principal component analysis showed a significant difference of both IgG4-ROD and orbital MALT lymphoma for biopsy specimens and controls. Interestingly, lesions in IgG4-ROD were uniquely enriched in arachidonic metabolism, whereas those in orbital MALT lymphoma were enriched in tricarboxylic acid cycle metabolism. We identified spermine as the best discriminator between IgG4-ROD and orbital MALT lymphoma, and the area under the receiver operating characteristic curve of the spermine to discriminate between the two diseases was 0.89 (95% confidence interval, 0.803–0.984). A random forest model incorporating a panel of five metabolites showed a high area under the receiver operating characteristic curve value of 0.983 (95% confidence interval, 0.981–0.984). The results of validation revealed that four tissue metabolites: N1,N12-diacetylspermine, spermine, malate, and glycolate, had statistically significant differences between IgG4-ROD and orbital MALT lymphoma with receiver operating characteristic values from 0.708 to 0.863. Conclusions These data revealed the characteristic differences in metabolomic profiles between IgG4-ROD and orbital MALT lymphoma, which may be useful for developing new diagnostic biomarkers and elucidating the pathogenic mechanisms of these common orbital lymphoproliferative disorders.
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Affiliation(s)
- Hiroyuki Shimizu
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Yoshihiko Usui
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Ryo Wakita
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Yasuko Aita
- Research and Development Center for Minimally Invasive Therapies, Institute of Medical Science, Tokyo Medical University, Shinjuku, Tokyo, Japan
| | - Atsumi Tomita
- Research and Development Center for Minimally Invasive Therapies, Institute of Medical Science, Tokyo Medical University, Shinjuku, Tokyo, Japan
| | - Kinya Tsubota
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Masaki Asakage
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Naoya Nezu
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Hiroyuki Komatsu
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Kazuhiko Umazume
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Sugimoto
- Research and Development Center for Minimally Invasive Therapies, Institute of Medical Science, Tokyo Medical University, Shinjuku, Tokyo, Japan
| | - Hiroshi Goto
- Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
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6
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Peng Z, Chang Y, Fan J, Ji W, Su C. Phospholipase A2 superfamily in cancer. Cancer Lett 2020; 497:165-177. [PMID: 33080311 DOI: 10.1016/j.canlet.2020.10.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 10/11/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022]
Abstract
Phospholipase A2 enzymes (PLA2s) comprise a superfamily that is generally divided into six subfamilies known as cytosolic PLA2s (cPLA2s), calcium-independent PLA2s (iPLA2s), secreted PLA2s (sPLA2s), lysosomal PLA2s, platelet-activating factor (PAF) acetylhydrolases, and adipose specific PLA2s. Each subfamily consists of several isozymes that possess PLA2 activity. The first three PLA2 subfamilies play important roles in inflammation-related diseases and cancer. In this review, the roles of well-studied enzymes sPLA2-IIA, cPLA2α and iPLA2β in carcinogenesis and cancer development were discussed. sPLA2-IIA seems to play conflicting roles and can act as a tumor suppressor or a tumor promoter according to the cancer type, but cPLA2α and iPLA2β play protumorigenic role in most cancers. The mechanisms of PLA2-mediated signal transduction and crosstalk between cancer cells and endothelial cells in the tumor microenvironment are described. Moreover, the mechanisms by which PLA2s mediate lipid reprogramming and glycerophospholipid remodeling in cancer cells are illustrated. PLA2s as the upstream regulators of the arachidonic acid cascade are generally high expressed and activated in various cancers. Therefore, they can be considered as potential pharmacological targets and biomarkers in cancer. The detailed information summarized in this review may aid in understanding the roles of PLA2s in cancer, and provide new clues for the development of novel agents and strategies for tumor prevention and treatment.
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Affiliation(s)
- Zhangxiao Peng
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital & National Center for Liver Cancer, Navy Military Medical University, Shanghai, 200438, China.
| | - Yanxin Chang
- Department of Biliary Tract Surgery IV, Eastern Hepatobiliary Surgical Hospital, Navy Military Medical University, Shanghai, 200438, China.
| | - Jianhui Fan
- Mengchao Hepatobiliary Hospital, Fujian Medical University, Fuzhou, 350025, Fujian Province, China.
| | - Weidan Ji
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital & National Center for Liver Cancer, Navy Military Medical University, Shanghai, 200438, China.
| | - Changqing Su
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital & National Center for Liver Cancer, Navy Military Medical University, Shanghai, 200438, China.
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7
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Mbarik M, Biam RS, Robichaud PP, Surette ME. The impact of PUFA on cell responses: Caution should be exercised when selecting PUFA concentrations in cell culture. Prostaglandins Leukot Essent Fatty Acids 2020; 155:102083. [PMID: 32126480 DOI: 10.1016/j.plefa.2020.102083] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/05/2020] [Accepted: 02/18/2020] [Indexed: 12/27/2022]
Abstract
Polyunsaturated fatty acids (PUFA) are important components of cellular membranes, serving both structural and signaling functions. Investigation of the functional responses of cells to various PUFA often involves cell culture experiments, which can then inform or guide subsequent in vivo and clinical investigations. In this study, human carcinoma and leukemia cell lines (MCF-7, HepG2, THP-1, Jurkat) were incubated for 3 days in the presence of up to 150 μM of exogenous arachidonic or eicosapentaenoic acids. At concentrations up to 20 μM these PUFA were enriched in cellular phospholipids, but at concentrations of 20 μM or higher cells accumulated large quantities of these PUFA and their elongation products into triglycerides. This coincided with decreased cell proliferation and enhanced apoptosis. Inhibition of DGAT1 but not DGAT2 enhanced the cytotoxic effect of exogenous PUFA suggesting a protective role of PUFA sequestration into TGs. Lower (10 μM) and higher (50 μM) exogenous PUFA concentrations also had different impacts on the expression of PUFA metabolizing enzymes. Overall, these results indicate that caution must be exercised when planning in vitro experiments since elevated concentrations of PUFA can lead to dysfunctional cellular responses that are not predictive of in vivo responses to dietary PUFA.
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Affiliation(s)
- Maroua Mbarik
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9, Canada
| | - Roody S Biam
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9, Canada
| | | | - Marc E Surette
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9, Canada.
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8
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Jiménez JA, Novinscak A, Filion M. Pseudomonas fluorescens LBUM677 differentially increases plant biomass, total oil content and lipid composition in three oilseed crops. J Appl Microbiol 2019; 128:1119-1127. [PMID: 31793115 DOI: 10.1111/jam.14536] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 11/28/2022]
Abstract
AIMS Pseudomonas spp. have been widely studied for their plant growth-promoting effects. However, their capacity to promote lipid accumulation in oilseed crops is not well characterized. In this study, we evaluated the effect of Pseudomonas fluorescens LBUM677 on lipid accumulation in three oilseed crops: soybean (Glycine max), canola (Brassica napus) and corn gromwell (Buglossoides arvensis), a plant of high nutraceutical interest for its accumulation of the omega-3 stearidonic acid. METHODS AND RESULTS Pot experiments were conducted under controlled conditions where seeds were inoculated or not with LBUM677 and plants were harvested at 4, 8 and 12 weeks. A qPCR assay specifically targeting LBUM677 was used in parallel to correlate LBUM677 soil rhizosphere competency to growth promotion and seed lipid accumulation. Total oil seed content and fatty acid composition were analysed at seed maturity. Results showed that LBUM677 was able to establish itself in the rhizosphere of the three plant species at similar levels, but it differentially increased plant biomass, total oil content and lipid composition in a plant-specific manner. CONCLUSIONS Despite some species-specific differences observed in P. fluorescens LBUM677's effect on different crops, the strain appears to be a generalist plant growth-promoting rhizobacteria of oilseed crops. SIGNIFICANCE AND IMPACT OF THE STUDY LBUM677 shows great potential to be used as an inoculum to promote oil yield and fatty acid accumulation in oilseed crops.
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Affiliation(s)
- J A Jiménez
- Biology Department, Université de Moncton, Moncton, NB, Canada
| | - A Novinscak
- Biology Department, Université de Moncton, Moncton, NB, Canada
| | - M Filion
- Biology Department, Université de Moncton, Moncton, NB, Canada
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9
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Jougleux JL, Rioux FM, Fiset S, Boudreau LH, Surette ME. Influence of iron-deficient diets during gestation and lactation on cerebral fatty acids and eicosanoids in guinea pig offspring-Comparison of studies with different sources of dietary lipids. Prostaglandins Leukot Essent Fatty Acids 2019; 149:37-45. [PMID: 31422159 DOI: 10.1016/j.plefa.2019.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/26/2019] [Accepted: 08/07/2019] [Indexed: 11/29/2022]
Abstract
Previous studies showed that mild iron deficiency anaemia (IDA) induced by feeding an iron deficient (ID) diet to female guinea pigs during gestation and lactation to alters the auditory functions of the offspring when corn oil is the only source of dietary lipids. Conversely, feeding an ID diet with a dietary fatty acid composition similar to that of typical human western diets induced minor impairments. Since tissue fatty acid metabolism is affected by dietary iron, the current study measured the impacts of these ID diets (ID-corn and ID-west) compared to the corresponding iron-sufficient control diets (IS-corn and IS-west) on encephalum fatty acid metabolism in the offspring at post-natal day 24. IDA induced by the ID-corn diet resulted in significant increases in encephalum n-6 PUFA content, but IDA induced by the ID-west diet had little impact on fatty acid profiles compared to the IS-west group. Brain COX II protein expression and FADS2 mRNA expression were statistically unaffected in both experiments, but encephalum PGE2 concentrations were significantly reduced in ID-west pups. These results suggest IDA studies during prenatal development should consider dietary lipid compositions.
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Affiliation(s)
- Jean-Luc Jougleux
- Département de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB, E1A 3E9, Canada
| | - France M Rioux
- École des sciences de la Nutrition, Faculté des Sciences de la Santé, Université d'Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Sylvain Fiset
- Secteur Administration et Sciences Humaines, Université de Moncton, Campus Edmundston, Edmundston, NB, E3V 2S8, Canada
| | - Luc H Boudreau
- Département de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB, E1A 3E9, Canada
| | - Marc E Surette
- Département de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB, E1A 3E9, Canada.
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10
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Liu Y, Huang A, Chen Q, Chen X, Fei Y, Zhao X, Zhang W, Hong Z, Zhu Z, Yang J, Chai Y, Wang J, Hu X. A distinct glycerophospholipid metabolism signature of acute graft versus host disease with predictive value. JCI Insight 2019; 5:129494. [PMID: 31343987 DOI: 10.1172/jci.insight.129494] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Acute graft-versus-host disease (aGvHD) is a major factor that limits the successful outcomes of allogeneic hematopoietic cell transplantation (alloHSCT). Currently there are few validated biomarkers that can help predict the risk of aGvHD in clinical settings. METHODS We performed an integrated metabolomics and transcriptomics study and identified biomarkers that distinguish alloHSCT recipients with aGvHD from alloHSCT recipients without aGvHD in two separate cohorts. RESULTS Pathway analysis of 38 significantly altered metabolites and 1148 differentially expressed genes uncovered a distinctly altered glycerophospholipid (GPL) metabolism network. Subsequently, we developed an aGvHD risk score (GRS) based on 5 metabolites markers from GPL metabolism to predict the risk of aGvHD. GRS showed a positive predictive value of 92.2% and 89.6% in the training and validation cohorts, respectively. In addition, high GRS was correlated with poor overall survival. Gene expressions of GPL-related lipases were significantly altered in aGvHD samples, leading to dysregulated GPLs. CONCLUSIONS Using integrative "Omic" analysis, we unraveled a comprehensive view of the molecular perturbations underlying the pathogenesis of aGvHD. Our work represents an initial investigation of a unique metabolic and transcriptomic network that may help identify aGvHD at an early stage and facilitate preemptive therapy. FUNDING National Natural Science Foundation of China (NSFC; 81530047, 81870143, 81470321, 81770160, 81270567, 81270638, 81573396, 81703674). Shanghai Sailing Program from Science and Technology Commission Shanghai Municipality (17YF1424700). Scholarship from Shanghai Municipal Health and Family Planning Commission (2017BR012). Special Clinical Research in Health Industry in Shanghai (20184Y0054).
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Affiliation(s)
- Yue Liu
- Department of Pharmaceutical Analysis, School of Pharmacy
| | - Aijie Huang
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Qi Chen
- Department of Health Statistics, Second Military Medical University, Shanghai, China
| | - Xiaofei Chen
- Department of Pharmaceutical Analysis, School of Pharmacy
| | - Yang Fei
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Xiaoming Zhao
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Weiping Zhang
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Zhanying Hong
- Department of Pharmaceutical Analysis, School of Pharmacy
| | - Zhenyu Zhu
- Department of Pharmaceutical Analysis, School of Pharmacy
| | - Jianmin Yang
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Yifeng Chai
- Department of Pharmaceutical Analysis, School of Pharmacy
| | - Jianmin Wang
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
| | - Xiaoxia Hu
- Department of Hematology, Institute of Hematology, Changhai Hospital, and
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11
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Robichaud PP, Munganyiki JE, Boilard E, Surette ME. Polyunsaturated fatty acid elongation and desaturation in activated human T-cells: ELOVL5 is the key elongase. J Lipid Res 2018; 59:2383-2396. [PMID: 30293059 PMCID: PMC6277159 DOI: 10.1194/jlr.m090050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/05/2018] [Indexed: 01/01/2023] Open
Abstract
PUFAs are important constituents of membrane glycerophospholipids. However, changes in the capacities to incorporate and metabolize PUFAs when cells enter the cell cycle have not been thoroughly studied. In this study, differences in the incorporation and metabolism of exogenous PUFAs in resting and proliferating primary human T-cells and in the Jurkat cell line were measured. Overall, proliferating T-cells and Jurkat cells had a greater capacity to incorporate and elongate exogenous 18- and 20-carbon PUFAs compared with resting T-cells. Proliferating T-cells and Jurkat cells also showed a greater capacity to desaturate 18-carbon PUFA substrates. Consistent with these observations, a significant increase in the expression of fatty acid desaturase (FADS) 1, FADS2, and elongation of very long chain fatty acids protein (ELOVL) 5 was measured in proliferating T-cells compared with resting T-cells. No quantifiable ELOVL2 was measured. Knockdown of ELOVL5 in T-cells and Jurkat cells significantly affected cellular monounsaturated and PUFA profiles and strongly impaired the elongation of 18- and 20-carbon PUFAs. In conclusion, the induction of proliferation in human T-cells is associated with a significant increase in the capacity to take up and metabolize exogenous PUFAs, and ELOVL5 is responsible for the elongation of 18- and 20-carbon PUFAs in these cells.
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Affiliation(s)
- Philippe-Pierre Robichaud
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9 Canada.,Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Québec, QC, G1V 4G2 Canada
| | - Jean Eric Munganyiki
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9 Canada
| | - Eric Boilard
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Québec, QC, G1V 4G2 Canada
| | - Marc E Surette
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9 Canada
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12
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Chiu YH, Bertrand KA, Zhang S, Laden F, Epstein MM, Rosner BA, Chiuve S, Campos H, Giovannucci EL, Chavarro JE, Birmann BM. A prospective analysis of circulating saturated and monounsaturated fatty acids and risk of non-Hodgkin lymphoma. Int J Cancer 2018; 143:1914-1922. [PMID: 29756258 DOI: 10.1002/ijc.31602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 04/09/2018] [Accepted: 04/27/2018] [Indexed: 01/14/2023]
Abstract
Circulating saturated (SFA) and monounsaturated fatty acids (MUFA), which are predominantly derived from endogenous metabolism, may influence non-Hodgkin lymphoma (NHL) risk by modulating inflammation or lymphocyte membrane stability. However, few biomarker studies have evaluated NHL risk associated with these fats. We conducted a prospective study of 583 incident NHL cases and 583 individually matched controls with archived pre-diagnosis red blood cell (RBC) specimens in the Nurses' Health Study (NHS) and Health Professionals Follow-Up Study (HPFS). RBC membrane fatty acid levels were measured using gas chromatography. Using multivariable logistic regression, we estimated odds ratios (OR) and 95% confidence intervals (CI) for risk of NHL and major NHL subtypes including T cell NHL (T-NHL), B cell NHL (B-NHL) and three individual B-NHLs: chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), diffuse large B-cell lymphoma (DLBCL) and follicular lymphoma. RBC SFA and MUFA levels were not associated with NHL risk overall. However, RBC very long chain SFA levels (VLCSFA; 20:0, 22:0, 23:0) were inversely associated with B-NHLs other than CLL/SLL; ORs (95% CIs) per standard deviation (SD) increase in level were 0.81 (0.70, 0.95) for 20:0, 0.82 (0.70, 0.95) for 22:0 and 0.82 (0.70, 0.96) for 23:0 VLCSFA. Also, both VLCSFA and MUFA levels were inversely associated with T-NHL [ORs (95% CIs) per SD: VLCSFA, 0.63 (0.40, 0.99); MUFA, 0.63 (0.40, 0.99)]. The findings of inverse associations for VLCSFAs with B-NHLs other than CLL/SLL and for VLCSFA and MUFA with T-NHL suggest an influence of fatty acid metabolism on lymphomagenesis.
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Affiliation(s)
- Yu-Han Chiu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | | | - Shumin Zhang
- Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Francine Laden
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA
| | - Mara M Epstein
- Department of Medicine and the Meyers Primary Care Institute, University of Massachusetts Medical School, Worcester, MA
| | - Bernard A Rosner
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA.,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Stephanie Chiuve
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,AbbVie Pharmaceuticals, North Chicago, IL
| | - Hannia Campos
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,Centro de Investigación e Innovación en Nutrición Translacional y Salud, Universidad Hispanoamericana, San José, Costa Rica
| | - Edward L Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA
| | - Brenda M Birmann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA
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13
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Zhao C, Xie P, Yang T, Wang H, Chung ACK, Cai Z. Identification of glycerophospholipid fatty acid remodeling by using mass spectrometry imaging in bisphenol S induced mouse liver. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.01.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Selectivity of phospholipid hydrolysis by phospholipase A 2 enzymes in activated cells leading to polyunsaturated fatty acid mobilization. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1864:772-783. [PMID: 30010011 DOI: 10.1016/j.bbalip.2018.07.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/08/2018] [Accepted: 07/10/2018] [Indexed: 12/14/2022]
Abstract
Phospholipase A2s are enzymes that hydrolyze the fatty acid at the sn-2 position of the glycerol backbone of membrane glycerophospholipids. Given the asymmetric distribution of fatty acids within phospholipids, where saturated fatty acids tend to be present at the sn-1 position, and polyunsaturated fatty acids such as those of the omega-3 and omega-6 series overwhelmingly localize in the sn-2 position, the phospholipase A2 reaction is of utmost importance as a regulatory checkpoint for the mobilization of these fatty acids and the subsequent synthesis of proinflammatory omega-6-derived eicosanoids on one hand, and omega-3-derived specialized pro-resolving mediators on the other. The great variety of phospholipase A2s, their differential substrate selectivity under a variety of pathophysiological conditions, as well as the different compartmentalization of each enzyme and accessibility to substrate, render this class of enzymes also key to membrane phospholipid remodeling reactions, and the generation of specific lipid mediators not related with canonical metabolites of omega-6 or omega-3 fatty acids. This review highlights novel findings regarding the selective hydrolysis of phospholipids by phospholipase A2s and the influence this may have on the ability of these enzymes to generate distinct lipid mediators with essential functions in biological processes. This brings a new understanding of the cellular roles of these enzymes depending upon activation conditions.
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15
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Rey C, Nadjar A, Joffre F, Amadieu C, Aubert A, Vaysse C, Pallet V, Layé S, Joffre C. Maternal n-3 polyunsaturated fatty acid dietary supply modulates microglia lipid content in the offspring. Prostaglandins Leukot Essent Fatty Acids 2018; 133:1-7. [PMID: 29789127 DOI: 10.1016/j.plefa.2018.04.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/20/2018] [Accepted: 04/20/2018] [Indexed: 12/12/2022]
Abstract
The brain is highly enriched in long chain polyunsaturated fatty acids (LC-PUFAs) that are esterified into phospholipids, the major components of cell membranes. They accumulate during the perinatal period when the brain is rapidly developing. Hence, the levels of LC-PUFAs in the brains of the offspring greatly depend on maternal dietary intake. Perinatal n-3 PUFA consumption has been suggested to modulate the activity of microglial cells, the brain's innate immune cells which contribute to the shaping of neuronal network during development. However, the impact of maternal n-3 PUFA intake on microglial lipid composition in the offspring has never been studied. To investigate the impact of maternal dietary n-3 PUFA supply on microglia lipid composition, pregnant mice were fed with n-3 PUFA deficient, n-3 PUFA balanced or n-3 PUFA supplemented diets during gestation and lactation. At weaning, microglia were isolated from the pup's brains to analyze their fatty acid composition and phospholipid class levels. We here report that post-natal microglial cells displayed a distinctive lipid profile as they contained high levels of eicosapentaenoic acid (EPA), more EPA than docosahexaenoic acid (DHA) and large amount of phosphatidylinositol (PI) / phosphatidylserine (PS). Maternal n-3 PUFA supply increased DHA levels and decreased n-6 docosapentaenoic acid (DPA) levels whereas the PI/PS membrane content was inversely correlated to the quantity of PUFAs in the diet. These results raise the possibility of modulating microglial lipid profile and their subsequent activity in the developing brain.
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Affiliation(s)
- Charlotte Rey
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; ITERG, Institut des corps gras, Canéjan 33610, France
| | - Agnès Nadjar
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France
| | | | - Camille Amadieu
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France
| | - Agnès Aubert
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France
| | - Carole Vaysse
- ITERG, Institut des corps gras, Canéjan 33610, France
| | - Véronique Pallet
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France
| | - Sophie Layé
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France
| | - Corinne Joffre
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; Bordeaux University, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France.
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16
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Shen Y, Wen Z, Li Y, Matteson EL, Hong J, Goronzy JJ, Weyand CM. Metabolic control of the scaffold protein TKS5 in tissue-invasive, proinflammatory T cells. Nat Immunol 2017; 18:1025-1034. [PMID: 28737753 PMCID: PMC5568495 DOI: 10.1038/ni.3808] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 06/28/2017] [Indexed: 12/13/2022]
Abstract
Pathogenic T cells in individuals with rheumatoid arthritis (RA) infiltrate non-lymphoid tissue sites, maneuver through extracellular matrix and form lasting inflammatory microstructures. Here we found that RA T cells abundantly express the podosome scaffolding protein TKS5, which enables them to form tissue-invasive membrane structures. TKS5 overexpression was regulated by the intracellular metabolic environment of RA T cells-specifically, by reduced glycolytic flux that led to deficiencies in ATP and pyruvate. ATPlopyruvatelo conditions triggered fatty acid biosynthesis and the formation of cytoplasmic lipid droplets. Restoration of pyruvate production or inhibition of fatty acid synthesis corrected the tissue-invasiveness of RA T cells in vivo and reversed their proarthritogenic behavior. Thus, metabolic control of T cell locomotion provides new opportunities to interfere with T cell invasion into specific tissue sites.
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Affiliation(s)
- Yi Shen
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Zhenke Wen
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Yinyin Li
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Eric L. Matteson
- Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Jison Hong
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jörg J. Goronzy
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Cornelia M. Weyand
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
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17
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Thabet K, Chan HLY, Petta S, Mangia A, Berg T, Boonstra A, Brouwer WP, Abate ML, Wong VWS, Nazmy M, Fischer J, Liddle C, George J, Eslam M. The membrane-bound O-acyltransferase domain-containing 7 variant rs641738 increases inflammation and fibrosis in chronic hepatitis B. Hepatology 2017; 65:1840-1850. [PMID: 28109005 DOI: 10.1002/hep.29064] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/18/2016] [Accepted: 01/13/2017] [Indexed: 12/24/2022]
Abstract
UNLABELLED Chronic hepatitis B (CHB) is characterized by hepatic inflammation that promotes progression to cirrhosis and predisposes to the development of hepatocellular carcinoma (HCC). Subtle interindividual genetic variation as well as viral and environmental factors interact to determine disease progression between individuals. Recently, the rs641738 membrane-bound O-acyltransferase domain-containing 7 (MBOAT7) polymorphism was demonstrated to influence histological liver damage in alcoholic liver disease, nonalcoholic fatty liver disease, and hepatitis C, but no data are available for CHB. We evaluated rs641738 influence on disease severity in a cohort of 1,101 patients with CHB. Forty-two patients underwent gene expression analysis to assess the functional consequences of rs641738 on hepatic MBOAT7 expression. The minor allele (T) of rs641738 was associated with greater inflammation (odds ratio [OR], 1.45; 95% confidence interval [CI], 1.06-1.95; P = 0.001) and fibrosis (OR = 1.31; 95% CI, 1.19-1.92; P = 0.01). Risk allele frequency in whites (0.43) was greater than in Chinese (0.24), translating to a larger size effect in the former. The rs641738 (T) allele was associated with lower hepatic MBOAT7 expression (P = 0.008), and the latter was associated with serum liver enzymes and inflammation. Neither patatin-like phospholipase domain-containing protein 3 rs738409 nor transmembrane 6 superfamily member 2 rs58542926 polymorphisms influenced disease severity. CONCLUSION In patients with CHB, MBOAT7 rs641738 influences hepatic inflammation and fibrosis stage. (Hepatology 2017;65:1840-1850).
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Affiliation(s)
- Khaled Thabet
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, NSW, Australia.,Biochemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Henry Lik Yuen Chan
- Department of Medicine and Therapeutics, Institute of Digestive Disease and State Key Laboratory of Digestive Disease, the Chinese University of Hong Kong
| | - Salvatore Petta
- Sezione di Gastroenterologia, DiBiMIS, University of Palermo, Palermo, Italy
| | - Alessandra Mangia
- Division of Hepatology, Ospedale Casa Sollievo della Sofferenza, IRCCS, San Giovanni Rotondo, Italy
| | - Thomas Berg
- Section of Hepatology, Clinic for Gastroenterology and Rheumatology, University Clinic Leipzig, Leipzig, Germany
| | - Andre Boonstra
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Willem P Brouwer
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Maria Lorena Abate
- Division of Gastroenterology and Hepatology, Department of Medical Science, University of Turin, Turin, Italy
| | - Vincent Wai-Sun Wong
- Department of Medicine and Therapeutics, Institute of Digestive Disease and State Key Laboratory of Digestive Disease, the Chinese University of Hong Kong
| | - Maiiada Nazmy
- Biochemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Janett Fischer
- Section of Hepatology, Clinic for Gastroenterology and Rheumatology, University Clinic Leipzig, Leipzig, Germany
| | - Christopher Liddle
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, NSW, Australia
| | - Jacob George
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, NSW, Australia
| | - Mohammed Eslam
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, NSW, Australia
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18
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Abstract
Immune cell activation and proliferation are closely linked to their metabolic programming. These activated immune cells share many features with tumor cells and are capable to respond to stimulations quickly and reprogram their metabolism to fight with invading pathogens. The corresponding changes in metabolism provide immune cells with energy and bio-precursors to match with necessity of immune functions. The major metabolic pathways utilized by immune cells for the purpose of protecting body from invading pathogens are glycolysis, glutaminolysis, fatty acid synthesis and oxidation, and mitochondria oxidative phosphorylation. These pathways play crucial roles in immune cell activation and differentiation. In this review, we describe how immune cells engage in certain metabolic processes according to their functional needs with a focus on T cells and macrophages.
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Affiliation(s)
- H Sun
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, PA 19104, USA
| | - X Li
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, PA 19104, USA
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19
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Yeoh BS, Saha P, Singh V, Xiao X, Ying Y, Vanamala JK, Kennett MJ, Harvatine KJ, Joe B, Vijay-Kumar M. Deficiency of stearoyl-CoA desaturase-1 aggravates colitogenic potential of adoptively transferred effector T cells. Am J Physiol Gastrointest Liver Physiol 2016; 311:G713-G723. [PMID: 27609767 PMCID: PMC5142196 DOI: 10.1152/ajpgi.00174.2016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 09/06/2016] [Indexed: 01/31/2023]
Abstract
Stearoyl-CoA desaturase-1 (SCD1) is a lipogenic enzyme involved in the de novo biosynthesis of oleate (C18:1, n9), a major fatty acid in the phospholipids of lipid bilayers of cell membranes. Accordingly, Scd1KO mice display substantially reduced oleate in cell membranes. An altered SCD1 level was observed during intestinal inflammation; however, its role in modulating inflammatory bowel disease remains elusive. Herein, we investigated the colitogenic capacity of Scd1KO effector T cells by employing the adoptive T-cell transfer colitis model. Splenic effector T cells (CD4+CD25-) from age- and sex-matched wild-type (WT) and Scd1KO mice were isolated by FACS and intraperitoneally administered to Rag1KO mice, which were monitored for the development of colitis. At day 60 postcell transfer, Rag1KO mice that received Scd1KO CD4+CD25- T cells displayed accelerated and exacerbated colitis than mice receiving WT CD4+CD25- T cells. Intriguingly, Scd1KO CD4+CD25- T cells display augmented inflammatory cytokine profile and cellular membrane fluidity with a concomitant increase in proinflammatory saturated fatty acids, which we postulate to potentially underlie their augmented colitogenic potential.
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Affiliation(s)
- Beng San Yeoh
- 1Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania;
| | - Piu Saha
- 1Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania;
| | - Vishal Singh
- 1Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania;
| | - Xia Xiao
- 1Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania;
| | - Yun Ying
- 2Department of Animal Science, The Pennsylvania State University, University Park, Pennsylvania;
| | - Jairam K. Vanamala
- 3Department of Food Science, The Pennsylvania State University, University Park, Pennsylvania;
| | - Mary J. Kennett
- 4Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania;
| | - Kevin J. Harvatine
- 2Department of Animal Science, The Pennsylvania State University, University Park, Pennsylvania;
| | - Bina Joe
- 5Department of Physiology and Pharmacology, Center for Hypertension and Personalized Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio; and
| | - Matam Vijay-Kumar
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania; .,Department of Medicine, The Pennsylvania State University Medical Center, Hershey, Pennsylvania
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20
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Robichaud PP, Poirier SJ, Boudreau LH, Doiron JA, Barnett DA, Boilard E, Surette ME. On the cellular metabolism of the click chemistry probe 19-alkyne arachidonic acid. J Lipid Res 2016; 57:1821-1830. [PMID: 27538823 DOI: 10.1194/jlr.m067637] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 12/21/2022] Open
Abstract
Alkyne and azide analogs of natural compounds that can be coupled to sensitive tags by click chemistry are powerful tools to study biological processes. Arachidonic acid (AA) is a FA precursor to biologically active compounds. 19-Alkyne-AA (AA-alk) is a sensitive clickable AA analog; however, its use as a surrogate to study AA metabolism requires further evaluation. In this study, AA-alk metabolism was compared with that of AA in human cells. Jurkat cell uptake of AA was 2-fold greater than that of AA-alk, but significantly more AA-Alk was elongated to 22:4. AA and AA-alk incorporation into and remodeling between phospholipid (PL) classes was identical indicating equivalent CoA-independent AA-PL remodeling. Platelets stimulated in the pre-sence of AA-alk synthesized significantly less 12-lipoxygenase (12-LOX) and cyclooxygenase products than in the presence of AA. Ionophore-stimulated neutrophils produced significantly more 5-LOX products in the presence of AA-alk than AA. Neutrophils stimulated with only exogenous AA-alk produced significantly less 5-LOX products compared with AA, and leukotriene B4 (LTB4)-alk was 12-fold less potent at stimulating neutrophil migration than LTB4, collectively indicative of weaker leukotriene B4 receptor 1 agonist activity of LTB4-alk. Overall, these results suggest that the use of AA-alk as a surrogate for the study of AA metabolism should be carried out with caution.
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Affiliation(s)
- Philippe Pierre Robichaud
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada; Centre de Recherche du Centre Hospitalier Universitaire de Québec, Département de Microbiologie et Immunologie, Université Laval, Québec, QC G1V 4G2, Canada
| | - Samuel J Poirier
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada; Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, QC G1V 4G5, Canada
| | - Luc H Boudreau
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - Jérémie A Doiron
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - David A Barnett
- Atlantic Cancer Research Institute, Moncton, NB E1C 8X3, Canada
| | - Eric Boilard
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Département de Microbiologie et Immunologie, Université Laval, Québec, QC G1V 4G2, Canada
| | - Marc E Surette
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada.
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21
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Barelli H, Antonny B. Lipid unsaturation and organelle dynamics. Curr Opin Cell Biol 2016; 41:25-32. [PMID: 27062546 DOI: 10.1016/j.ceb.2016.03.012] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/16/2016] [Accepted: 03/23/2016] [Indexed: 12/13/2022]
Abstract
The number of double bonds (=unsaturation) in the acyl chains of phospholipids (PL) influences the physical properties of cellular membranes. Here, we discuss disparate molecular processes, including vesicle budding, ion channel opening, and lipoprotein formation, which are greatly facilitated by PL polyunsaturation in membranes. Experimental and computer-based approaches for the structure and dynamics of PL suggest a common cause for these effects: the ability of the polyunsaturated acyl chain of PL to extend or bent along the membrane normal according to various constraints, thereby enabling a third dimension of motion in a structure that is essentially a 2D fluid.
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Affiliation(s)
- Hélène Barelli
- Institut de Pharmacologie Moléculaire et Cellulaire, 660 route des lucioles, 06560 Valbonne, France.
| | - Bruno Antonny
- Institut de Pharmacologie Moléculaire et Cellulaire, 660 route des lucioles, 06560 Valbonne, France.
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22
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Schilmiller AL, Gilgallon K, Ghosh B, Jones AD, Last RL. Acylsugar Acylhydrolases: Carboxylesterase-Catalyzed Hydrolysis of Acylsugars in Tomato Trichomes. PLANT PHYSIOLOGY 2016; 170:1331-44. [PMID: 26811191 PMCID: PMC4775116 DOI: 10.1104/pp.15.01348] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 01/23/2016] [Indexed: 05/05/2023]
Abstract
Glandular trichomes of cultivated tomato (Solanum lycopersicum) and many other species throughout the Solanaceae produce and secrete mixtures of sugar esters (acylsugars) on the plant aerial surfaces. In wild and cultivated tomato, these metabolites consist of a sugar backbone, typically glucose or sucrose, and two to five acyl chains esterified to various positions on the sugar core. The aliphatic acyl chains vary in length and branching and are transferred to the sugar by a series of reactions catalyzed by acylsugar acyltransferases. A phenotypic screen of a set of S. lycopersicum M82 × Solanum pennellii LA0716 introgression lines identified a dominant genetic locus on chromosome 5 from the wild relative that affected total acylsugar levels. Genetic mapping revealed that the reduction in acylsugar levels was consistent with the presence and increased expression of two S. pennellii genes (Sopen05g030120 and Sopen05g030130) encoding putative carboxylesterase enzymes of the α/β-hydrolase superfamily. These two enzymes, named ACYLSUGAR ACYLHYDROLASE1 (ASH1) and ASH2, were shown to remove acyl chains from specific positions of certain types of acylsugars in vitro. A survey of related genes in M82 and LA0716 identified another trichome-expressed ASH gene on chromosome 9 (M82, Solyc09g075710; LA0716, Sopen09g030520) encoding a protein with similar activity. Characterization of the in vitro activities of the SpASH enzymes showed reduced activities with acylsugars produced by LA0716, presumably contributing to the high-level production of acylsugars in the presence of highly expressed SpASH genes.
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Affiliation(s)
- Anthony L Schilmiller
- Department of Biochemistry and Molecular Biology (A.L.S, K.G., B.G., A.D.J., R.L.L.), Department of Chemistry (A.D.J.), and Department of Plant Biology (R.L.L.), Michigan State University, East Lansing, Michigan 48824-1319
| | - Karin Gilgallon
- Department of Biochemistry and Molecular Biology (A.L.S, K.G., B.G., A.D.J., R.L.L.), Department of Chemistry (A.D.J.), and Department of Plant Biology (R.L.L.), Michigan State University, East Lansing, Michigan 48824-1319
| | - Banibrata Ghosh
- Department of Biochemistry and Molecular Biology (A.L.S, K.G., B.G., A.D.J., R.L.L.), Department of Chemistry (A.D.J.), and Department of Plant Biology (R.L.L.), Michigan State University, East Lansing, Michigan 48824-1319
| | - A Daniel Jones
- Department of Biochemistry and Molecular Biology (A.L.S, K.G., B.G., A.D.J., R.L.L.), Department of Chemistry (A.D.J.), and Department of Plant Biology (R.L.L.), Michigan State University, East Lansing, Michigan 48824-1319
| | - Robert L Last
- Department of Biochemistry and Molecular Biology (A.L.S, K.G., B.G., A.D.J., R.L.L.), Department of Chemistry (A.D.J.), and Department of Plant Biology (R.L.L.), Michigan State University, East Lansing, Michigan 48824-1319
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Consumption of Buglossoides arvensis seed oil is safe and increases tissue long-chain n-3 fatty acid content more than flax seed oil - results of a phase I randomised clinical trial. J Nutr Sci 2016; 5:e2. [PMID: 26793308 PMCID: PMC4709838 DOI: 10.1017/jns.2015.34] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 10/19/2015] [Indexed: 12/27/2022] Open
Abstract
Enrichment of tissues with ≥20-carbon n-3 PUFA like EPA is associated with positive cardiovascular outcomes. Stearidonic acid (SDA; 18 : 4n-3) and α-linolenic acid (ALA; 18 : 3n-3) are plant-derived dietary n-3 PUFA; however, direct comparisons of their impact on tissue n-3 PUFA content are lacking. Ahiflower® oil extracted from Buglossoides arvensis seeds is the richest known non-genetically modified source of dietary SDA. To investigate the safety and efficacy of dietary Ahiflower oil, a parallel-group, randomised, double-blind, comparator-controlled phase I clinical trial was performed. Diets of healthy subjects (n 40) were supplemented for 28 d with 9·1 g/d of Ahiflower (46 % ALA, 20 % SDA) or flax seed oil (59 % ALA). Blood and urine chemistries, blood lipid profiles, hepatic and renal function tests and haematology were measured as safety parameters. The fatty acid composition of fasting plasma, erythrocytes, polymorphonuclear cells and mononuclear cells were measured at baseline and after 14 and 28 d of supplementation. No clinically significant changes in safety parameters were measured in either group. Tissue ALA and EPA content increased in both groups compared with baseline, but EPA accrual in plasma and in all cell types was greater in the Ahiflower group (time × treatment interactions, P ≤ 0·01). Plasma and mononuclear cell eicosatetraenoic acid (20 : 4n-3) and docosapentaenoic acid (22 : 5n-3) content also increased significantly in the Ahiflower group compared with the flax group. In conclusion, the consumption of Ahiflower oil is safe and is more effective for the enrichment of tissues with 20- and 22-carbon n-3 PUFA than flax seed oil.
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Key Words
- AE, adverse event
- ALA, α-linolenic acid
- AR, adverse reaction
- DGLA, dihomo-γ-linolenic acid
- DPA, docosapentaenoic acid
- EPA
- ETA, eicosatetraenoic acid
- FAME, fatty acid methyl esters
- GLA, γ-linolenic acid
- HBSS, Hanks' balanced salt solution
- Leucocytes
- PMN, polymorphonuclear cells
- SDA, stearidonic acid
- Stearidonic acid
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Trevisi P, Colombo M, Priori D, Fontanesi L, Galimberti G, Calò G, Motta V, Latorre R, Fanelli F, Mezzullo M, Pagotto U, Gherpelli Y, D'Inca R, Bosi P. Comparison of three patterns of feed supplementation with live Saccharomyces cerevisiae yeast on postweaning diarrhea, health status, and blood metabolic profile of susceptible weaning pigs orally challenged with Escherichia coli F4ac1. J Anim Sci 2015; 93:2225-33. [DOI: 10.2527/jas.2014-8539] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
PURPOSE OF REVIEW To highlight some of the recent advances related to the control of polyunsaturated fatty acid (PUFA) incorporation and remodeling in membrane glycerophospholipids in inflammatory cells. RECENT FINDINGS Several enzymes have recently been identified that are associated with the control of PUFA incorporation and remodeling into membrane phospholipids and their release. The functional roles of the different enzyme isotypes in the control of PUFA availability for lipid mediator biosynthesis and cell signaling are only now being established. The expression of specific acyl-CoA synthetase, lysophospholipid acyltransferase and phospholipase A2 isotypes has recently been shown to have an impact on membrane PUFA content, on the production of lipid mediators and on inflammation. SUMMARY A better understanding of the complex processes associated with the control PUFA remodeling in membrane phospholipids may lead to the discovery of new therapeutic targets for the treatment of inflammatory diseases.
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Affiliation(s)
- Philippe Pierre Robichaud
- aDepartment of Chemistry and Biochemistry, Université de Moncton, Moncton, New Brunswick bDepartment of Microbiology, Infectious Diseases and Immunology, Université Laval, Québec, Quebec, Canada
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Abstract
Cancer cells have long been known to fuel their pathogenic growth habits by sustaining a high glycolytic flux, first described almost 90 years ago as the so-called Warburg effect. Immune cells utilize a similar strategy to generate the energy carriers and metabolic intermediates they need to produce biomass and inflammatory mediators. Resting lymphocytes generate energy through oxidative phosphorylation and breakdown of fatty acids, and upon activation rapidly switch to aerobic glycolysis and low tricarboxylic acid flux. T cells in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) have a disease-specific metabolic signature that may explain, at least in part, why they are dysfunctional. RA T cells are characterized by low adenosine triphosphate and lactate levels and increased availability of the cellular reductant NADPH. This anti-Warburg effect results from insufficient activity of the glycolytic enzyme phosphofructokinase and differentiates the metabolic status in RA T cells from those in cancer cells. Excess production of reactive oxygen species and a defect in lipid metabolism characterizes metabolic conditions in SLE T cells. Owing to increased production of the glycosphingolipids lactosylceramide, globotriaosylceramide and monosialotetrahexosylganglioside, SLE T cells change membrane raft formation and fail to phosphorylate pERK, yet hyperproliferate. Borrowing from cancer metabolomics, the metabolic modifications occurring in autoimmune disease are probably heterogeneous and context dependent. Variations of glucose, amino acid and lipid metabolism in different disease states may provide opportunities to develop biomarkers and exploit metabolic pathways as therapeutic targets.
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Affiliation(s)
- Zhen Yang
- Department of Medicine, Stanford University School of Medicine, CCSR Building Rm 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA.
| | - Eric L Matteson
- Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA.
| | - Jörg J Goronzy
- Department of Medicine, Stanford University School of Medicine, CCSR Building Rm 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA.
| | - Cornelia M Weyand
- Department of Medicine, Stanford University School of Medicine, CCSR Building Rm 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA.
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27
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Das S, Martinez LR, Ray S. Phospholipid remodeling and eicosanoid signaling in colon cancer cells. INDIAN JOURNAL OF BIOCHEMISTRY & BIOPHYSICS 2014; 51:512-519. [PMID: 25823224 PMCID: PMC4460191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phospholipid remodeling and eicosanoid synthesis are central to lipid-based inflammatory reactions. Studies have revealed that membrane phospholipid remodeling by fatty acids through deacylation/reacylation reactions increases the risk of colorectal cancers (CRC) by allowing the cells to produce excess inflammatory eicosanoids, such as prostaglandins, thromboxanes and leukotrienes. Over the years, efforts have been made to understand the lipid remodeling pathways and to design anti-cancer drugs targeting the enzymes of eicosanoid biosynthesis. Here, we discuss the recent progress in phospholipid remodeling and eicosanoid biosynthesis in CRC.
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Affiliation(s)
- Siddhartha Das
- Infectious Disease and Immunology Cluster, the Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas 79968-0519, USA
| | - Leobarda Robles Martinez
- Infectious Disease and Immunology Cluster, the Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas 79968-0519, USA
| | - Suparna Ray
- Department of Biology, University of Erlangen-Nüremberg, Erlangen, Germany
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28
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Ghesquière B, Wong BW, Kuchnio A, Carmeliet P. Metabolism of stromal and immune cells in health and disease. Nature 2014; 511:167-76. [DOI: 10.1038/nature13312] [Citation(s) in RCA: 318] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 04/08/2014] [Indexed: 12/11/2022]
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29
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Lee J, Walsh MC, Hoehn KL, James DE, Wherry EJ, Choi Y. Regulator of fatty acid metabolism, acetyl coenzyme a carboxylase 1, controls T cell immunity. THE JOURNAL OF IMMUNOLOGY 2014; 192:3190-9. [PMID: 24567531 DOI: 10.4049/jimmunol.1302985] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Fatty acids (FAs) are essential constituents of cell membranes, signaling molecules, and bioenergetic substrates. Because CD8(+) T cells undergo both functional and metabolic changes during activation and differentiation, dynamic changes in FA metabolism also occur. However, the contributions of de novo lipogenesis to acquisition and maintenance of CD8(+) T cell function are unclear. In this article, we demonstrate the role of FA synthesis in CD8(+) T cell immunity. T cell-specific deletion of acetyl coenzyme A carboxylase 1 (ACC1), an enzyme that catalyzes conversion of acetyl coenzyme A to malonyl coenzyme A, a carbon donor for long-chain FA synthesis, resulted in impaired peripheral persistence and homeostatic proliferation of CD8(+) T cells in naive mice. Loss of ACC1 did not compromise effector CD8(+) T cell differentiation upon listeria infection but did result in a severe defect in Ag-specific CD8(+) T cell accumulation because of increased death of proliferating cells. Furthermore, in vitro mitogenic stimulation demonstrated that defective blasting and survival of ACC1-deficient CD8(+) T cells could be rescued by provision of exogenous FA. These results suggest an essential role for ACC1-mediated de novo lipogenesis as a regulator of CD8(+) T cell expansion, and may provide insights for therapeutic targets for interventions in autoimmune diseases, cancer, and chronic infections.
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Affiliation(s)
- JangEun Lee
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
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