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Chung KP, Cheng CN, Chen YJ, Hsu CL, Huang YL, Hsieh MS, Kuo HC, Lin YT, Juan YH, Nakahira K, Chen YF, Liu WL, Ruan SY, Chien JY, Plataki M, Cloonan SM, Carmeliet P, Choi AMK, Kuo CH, Yu CJ. Alveolar epithelial cells mitigate neutrophilic inflammation in lung injury through regulating mitochondrial fatty acid oxidation. Nat Commun 2024; 15:7241. [PMID: 39174557 PMCID: PMC11341863 DOI: 10.1038/s41467-024-51683-1] [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: 10/01/2023] [Accepted: 08/13/2024] [Indexed: 08/24/2024] Open
Abstract
Type 2 alveolar epithelial (AT2) cells of the lung are fundamental in regulating alveolar inflammation in response to injury. Impaired mitochondrial long-chain fatty acid β-oxidation (mtLCFAO) in AT2 cells is assumed to aggravate alveolar inflammation in acute lung injury (ALI), yet the importance of mtLCFAO to AT2 cell function needs to be defined. Here we show that expression of carnitine palmitoyltransferase 1a (CPT1a), a mtLCFAO rate limiting enzyme, in AT2 cells is significantly decreased in acute respiratory distress syndrome (ARDS). In mice, Cpt1a deletion in AT2 cells impairs mtLCFAO without reducing ATP production and alters surfactant phospholipid abundance in the alveoli. Impairing mtLCFAO in AT2 cells via deleting either Cpt1a or Acadl (acyl-CoA dehydrogenase long chain) restricts alveolar inflammation in ALI by hindering the production of the neutrophilic chemokine CXCL2 from AT2 cells. This study thus highlights mtLCFAO as immunometabolism to injury in AT2 cells and suggests impaired mtLCFAO in AT2 cells as an anti-inflammatory response in ARDS.
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Grants
- 109-O04, 110-O07, 110-S4872, 111-S0075, 113-S0079 National Taiwan University Hospital (NTUH)
- NTUCDP-112L7745, NTUCDP-112L7746, 110T099, NTU-NFG-110L7422 National Taiwan University (NTU)
- National Science and Technology Council (Taiwan) (MOST-108-2628-B-002-017 [K.P.C.], MOST-109-2628-B-002-044 [K.P.C.], MOST-110-2628-B-002-029 [K.P.C.], MOST-110-2628-B-002-045-MY3 [K.P.C.], MOST-111-2628-B-002-030-MY3 [K.P.C.])
- National Science and Technology Council (Taiwan), MOST 107-2314-B-002-235-MY3
- National Science and Technology Council (Taiwan), MOST 110-2314-B-002-262
- National Taiwan University School of Pharmacy Endowment Fund in support of the Platform for Clinical Mass Spectrometry and NMR Structure Elucidation
- Research funding provided by Mr. Barry Lam, the chairman of Quanta Computer Inc
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Affiliation(s)
- Kuei-Pin Chung
- Department of Laboratory Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chih-Ning Cheng
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Jung Chen
- Department of Laboratory Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Lang Hsu
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Lin Huang
- Department of Pathology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Min-Shu Hsieh
- Department of Pathology, National Taiwan University Cancer Center, Taipei, Taiwan
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Pathology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Han-Chun Kuo
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Ya-Ting Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Hsiu Juan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kiichi Nakahira
- Department of Pharmacology, Nara Medical University, Kashihara, Nara, Japan
| | - Yen-Fu Chen
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Wei-Lun Liu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, Taiwan
- Department of Critical Care Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei, Taiwan
| | - Sheng-Yuan Ruan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jung-Yien Chien
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Maria Plataki
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- New York Presbyterian Hospital-Weill Cornell Medical Center, New York, NY, USA
| | - Suzanne M Cloonan
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, Leuven, Belgium
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Augustine M K Choi
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- New York Presbyterian Hospital-Weill Cornell Medical Center, New York, NY, USA
| | - Ching-Hua Kuo
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan.
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan.
- Department of Pharmacy, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan.
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Briand-Mésange F, Gennero I, Salles J, Trudel S, Dahan L, Ausseil J, Payrastre B, Salles JP, Chap H. From Classical to Alternative Pathways of 2-Arachidonoylglycerol Synthesis: AlterAGs at the Crossroad of Endocannabinoid and Lysophospholipid Signaling. Molecules 2024; 29:3694. [PMID: 39125098 PMCID: PMC11314389 DOI: 10.3390/molecules29153694] [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: 06/21/2024] [Revised: 07/27/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024] Open
Abstract
2-arachidonoylglycerol (2-AG) is the most abundant endocannabinoid (EC), acting as a full agonist at both CB1 and CB2 cannabinoid receptors. It is synthesized on demand in postsynaptic membranes through the sequential action of phosphoinositide-specific phospholipase Cβ1 (PLCβ1) and diacylglycerol lipase α (DAGLα), contributing to retrograde signaling upon interaction with presynaptic CB1. However, 2-AG production might also involve various combinations of PLC and DAGL isoforms, as well as additional intracellular pathways implying other enzymes and substrates. Three other alternative pathways of 2-AG synthesis rest on the extracellular cleavage of 2-arachidonoyl-lysophospholipids by three different hydrolases: glycerophosphodiesterase 3 (GDE3), lipid phosphate phosphatases (LPPs), and two members of ecto-nucleotide pyrophosphatase/phosphodiesterases (ENPP6-7). We propose the names of AlterAG-1, -2, and -3 for three pathways sharing an ectocellular localization, allowing them to convert extracellular lysophospholipid mediators into 2-AG, thus inducing typical signaling switches between various G-protein-coupled receptors (GPCRs). This implies the critical importance of the regioisomerism of both lysophospholipid (LPLs) and 2-AG, which is the object of deep analysis within this review. The precise functional roles of AlterAGs are still poorly understood and will require gene invalidation approaches, knowing that both 2-AG and its related lysophospholipids are involved in numerous aspects of physiology and pathology, including cancer, inflammation, immune defenses, obesity, bone development, neurodegeneration, or psychiatric disorders.
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Affiliation(s)
- Fabienne Briand-Mésange
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
| | - Isabelle Gennero
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Centre Hospitalier Universitaire de Toulouse, Service de Biochimie, Institut Fédératif de Biologie, 31059 Toulouse, France
| | - Juliette Salles
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Centre Hospitalier Universitaire de Toulouse, Service de Psychiatrie D’urgences, de Crise et de Liaison, Institut des Handicaps Neurologiques, Psychiatriques et Sensoriels, 31059 Toulouse, France
| | - Stéphanie Trudel
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Centre Hospitalier Universitaire de Toulouse, Service de Biochimie, Institut Fédératif de Biologie, 31059 Toulouse, France
| | - Lionel Dahan
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France;
| | - Jérôme Ausseil
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Centre Hospitalier Universitaire de Toulouse, Service de Biochimie, Institut Fédératif de Biologie, 31059 Toulouse, France
| | - Bernard Payrastre
- I2MC-Institute of Metabolic and Cardiovascular Diseases, INSERM UMR1297 and University of Toulouse III, 31400 Toulouse, France;
- Centre Hospitalier Universitaire de Toulouse, Laboratoire d’Hématologie, 31400 Toulouse, France
| | - Jean-Pierre Salles
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Centre Hospitalier Universitaire de Toulouse, Unité d’Endocrinologie et Maladies Osseuses, Hôpital des Enfants, 31059 Toulouse, France
| | - Hugues Chap
- Infinity-Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, INSERM, CNRS, Paul Sabatier University, 31059 Toulouse, France; (F.B.-M.); (I.G.); (J.S.); (S.T.); (J.A.); (J.-P.S.)
- Académie des Sciences, Inscriptions et Belles Lettres de Toulouse, Hôtel d’Assézat, 31000 Toulouse, France
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3
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Abdel-Mohsen M, Deeks S, Giron L, Hong KY, Goldman A, Zhang L, Huang SSY, Verrill D, Guo S, Selzer L, de Vries CR, Vendrame E, SenGupta D, Wallin JJ, Cai Y. Circulating immune and plasma biomarkers of time to HIV rebound in HIV controllers treated with vesatolimod. Front Immunol 2024; 15:1405348. [PMID: 38979421 PMCID: PMC11229794 DOI: 10.3389/fimmu.2024.1405348] [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: 03/22/2024] [Accepted: 06/03/2024] [Indexed: 07/10/2024] Open
Abstract
Background Antiretroviral therapy (ART) for HIV-1 treatment has improved lifespan but requires lifelong adherence for people living with HIV (PLWH), highlighting the need for a cure. Evaluation of potential cure strategies requires analytic treatment interruption (ATI) with close monitoring of viral rebound. Predictive biomarkers for HIV-1 rebound and/or duration of control during ATI will facilitate these HIV cure trials while minimizing risks. Available evidence suggests that host immune, glycomic, lipid, and metabolic markers of inflammation may be associated with HIV-1 persistence in PLWH who are treated during chronic HIV-1 infection. Methods We conducted post-hoc analysis of HIV controllers who could maintain low levels of plasma HIV-1 without ART in a phase 1b vesatolimod trial. Baseline and pre-ATI levels of immune, glycomic, lipidomic, and metabolomic markers were tested for association with ATI outcomes (time of HIV-1 rebound to 200 copies/mL and 1,000 copies/mL, duration of HIV-1 RNA ≤400 copies/mL and change in intact proviral HIV-1 DNA during ATI) using Spearman's correlation and Cox proportional hazards model. Results Higher levels of CD69+CD8+ T-cells were consistently associated with shorter time to HIV-1 rebound at baseline and pre-ATI. With few exceptions, baseline fucosylated, non-galactosylated, non-sialylated, bisecting IgG N-glycans were associated with shorter time to HIV rebound and duration of control as with previous studies. Baseline plasma MPA and HPA binding glycans and non-galactosylated/non-sialylated glycans were associated with longer time to HIV rebound, while baseline multiply-galactosylated glycans and sialylated glycans, GNA-binding glycans, NPA-binding glycans, WGA-binding glycans, and bisecting GlcNAc glycans were associated with shorter time to HIV rebound and duration of control. Fourteen bioactive lipids had significant baseline associations with longer time to rebound and duration of control, and larger intact proviral HIV-1 DNA changes; additionally, three baseline bioactive lipids were associated with shorter time to first rebound and duration of control. Conclusion Consistent with studies in HIV non-controllers, proinflammatory glycans, lipids, and metabolites were generally associated with shorter duration of HIV-1 control. Notable differences were observed between HIV controllers vs. non-controllers in some specific markers. For the first time, exploratory biomarkers of ATI viral outcomes in HIV-controllers were investigated but require further validation.
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Affiliation(s)
- Mohamed Abdel-Mohsen
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, PA, United States
| | - Steven Deeks
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Leila Giron
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, PA, United States
| | - Kai Ying Hong
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, PA, United States
| | - Aaron Goldman
- Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, PA, United States
| | - Liao Zhang
- Clinical Bioinformatics and Exploratory Analytics, Gilead Sciences, Inc., Foster City, CA, United States
| | - Susie S Y Huang
- Clinical Bioinformatics and Exploratory Analytics, Gilead Sciences, Inc., Foster City, CA, United States
| | - Donovan Verrill
- Statistical Programming, Gilead Sciences, Inc., Foster City, CA, United States
| | - Susan Guo
- Biostatistics, Gilead Sciences, Inc., Foster City, CA, United States
| | - Lisa Selzer
- Clinical Virology, Gilead Sciences, Inc., Foster City, CA, United States
| | | | - Elena Vendrame
- Clinical Development, Gilead Sciences, Inc., Foster City, CA, United States
| | - Devi SenGupta
- Clinical Development, Gilead Sciences, Inc., Foster City, CA, United States
| | - Jeffrey J Wallin
- Biomarker Sciences and Diagnostics, Gilead Sciences, Inc., Foster City, CA, United States
| | - Yanhui Cai
- Biomarker Sciences and Diagnostics, Gilead Sciences, Inc., Foster City, CA, United States
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4
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Chen H, Chen JB, Du LN, Yuan HX, Shan JJ, Wang SC, Ye J, Lin LL. Integration of lipidomics and metabolomics reveals plasma and urinary profiles associated with pediatric Mycoplasma pneumoniae infections and its severity. Biomed Chromatogr 2024; 38:e5817. [PMID: 38131121 DOI: 10.1002/bmc.5817] [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: 11/02/2023] [Revised: 12/03/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Mycoplasma pneumoniae is a significant contributor to lower respiratory infections in children. However, the lipidomics and metabolics bases of childhood M. pneumoniae infections remain unclear. In this study, lipidomics and metabolomics analyses were conducted using UHPLC-LTQ-Orbitrap XL mass spectrometry and gas chromatography-triple quadrupole mass spectrometry on plasma (n = 65) and urine (n = 65) samples. MS-DIAL software, in combination with LipidBlast and Fiehn BinBase DB, identified 163 lipids and 104 metabolites in plasma samples, as well as 208 metabolites in urine samples. Perturbed lipid species (adjusted p < 0.05) were observed, including lysophosphatidylethanolamines, phosphatidylinositols, phosphatidylcholines, phosphatidylethanol amines, and triglycerides. Additionally, differential metabolites (adjusted p < 0.05) exhibited associations with amino acid metabolism, nucleotide metabolism, and energy metabolism. Thirteen plasma metabolites, namely l-hydroxyproline, 3-phosphoglycerate, citric acid, creatine, inosine, ribitol, α tocopherol, cholesterol, cystine, serine, uric acid, tagatose, and glycine, showed significant associations with disease severity (p < 0.05) and exhibited distinct separation patterns in M. pneumoniae-infected bronchitis and pneumonia, with an area under the curve of 0.927. Nine of them exhibited either positive or negative correlations with neutrophil or lymphocyte percentages. These findings indicated significant systemic metabolic shifts in childhood M. pneumoniae infections, offering valuable insights into the associated metabolic alterations and their relationship with disease severity.
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Affiliation(s)
- Hui Chen
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jia-Bin Chen
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Li-Na Du
- Department of Chinese Medicine, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing, China
| | - Hai-Xia Yuan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jin-Jun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shou-Chuan Wang
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jin Ye
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Li-Li Lin
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Medical Metabolomics Center, Pediatrics Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
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5
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Liu G, Li X, Wang Y, Zhang X, Gong W. Structural basis for ligand recognition and signaling of the lysophosphatidylserine receptors GPR34 and GPR174. PLoS Biol 2023; 21:e3002387. [PMID: 38048360 PMCID: PMC10721165 DOI: 10.1371/journal.pbio.3002387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 12/14/2023] [Accepted: 10/17/2023] [Indexed: 12/06/2023] Open
Abstract
Lysophosphatidylserine (LysoPS) is a naturally occurring lipid mediator involved in various physiological and pathological processes especially those related to the immune system. GPR34, GPR174, and P2Y10 have been identified as the receptors for LysoPS, and its analogues have been developed as agonists or antagonists for these receptors. However, the lack of structural information hinders the drug development with novel characteristics, such as nonlipid ligands and allosteric modulators. Here, we determined the structures of human GPR34 and GPR174 in complex with LysoPS and G protein by cryo-EM. Combined with structural analysis and functional studies, we elucidated the lipid-binding modes of these receptors. By structural comparison, we identified the structural features of GPR34 and GPR174 in active state. Taken together, our findings provide insights into ligand recognition and signaling of LysoPS receptors and will facilitate the development of novel therapeutics for related inflammatory diseases and autoimmune diseases.
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Affiliation(s)
- Guibing Liu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Xiu Li
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Yujing Wang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Xuan Zhang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Weimin Gong
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
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Wei J, Liu X, Xiao W, Lu J, Guan L, Fang Z, Chen J, Sun B, Cai Z, Sun X, Chen HL, Zhong N, Liu Z, Yang J, Xiao X, Huang SK. Phospholipid remodeling and its derivatives are associated with COVID-19 severity. J Allergy Clin Immunol 2023; 151:1259-1268. [PMID: 36736798 PMCID: PMC9891787 DOI: 10.1016/j.jaci.2022.11.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 09/30/2022] [Accepted: 11/25/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Timely medical intervention in severe cases of coronavirus disease 2019 (COVID-19) and better understanding of the disease's pathogenesis are essential for reducing mortality, but early classification of severe cases and its progression is challenging. OBJECTIVE We investigated the levels of circulating phospholipid metabolites and their relationship with COVID-19 severity, as well as the potential role of phospholipids in disease progression. METHODS We performed nontargeted lipidomic analysis of plasma samples (n = 150) collected from COVID-19 patients (n = 46) with 3 levels of disease severity, healthy individuals, and subjects with metabolic disease. RESULTS Phospholipid metabolism was significantly altered in COVID-19 patients. Results of a panel of phosphatidylcholine (PC) and lysophosphatidylcholine (LPC) and of phosphatidylethanolamine and lysophosphatidylethanolamine (LPE) ratios were significantly correlated with COVID-19 severity, in which 16 phospholipid ratios were shown to distinguish between patients with severe disease, mild disease, and healthy controls, 9 of which were at variance with those in subjects with metabolic disease. In particular, relatively lower ratios of circulating (PC16:1/22:6)/LPC 16:1 and (PE18:1/22:6)/LPE 18:1 were the most indicative of severe COVID-19. The elevation of levels of LPC 16:1 and LPE 18:1 contributed to the changes of related lipid ratios. An exploratory functional study of LPC 16:1 and LPE 18:1 demonstrated their ability in causing membrane perturbation, increased intracellular calcium, cytokines, and apoptosis in cellular models. CONCLUSION Significant Lands cycle remodeling is present in patients with severe COVID-19, suggesting a potential utility of selective phospholipids with functional consequences in evaluating COVID-19's severity and pathogenesis.
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Affiliation(s)
- Juntong Wei
- Department of Respirology and Allergy. Third Affiliated Hospital of Shenzhen University. Shenzhen, China,State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Xiaoyu Liu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Weimin Xiao
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen, China
| | - Jiahua Lu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Li Guan
- Department of Respirology and Allergy. Third Affiliated Hospital of Shenzhen University. Shenzhen, China
| | - Zhangfu Fang
- Department of Respirology and Allergy. Third Affiliated Hospital of Shenzhen University. Shenzhen, China,State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Jiaping Chen
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen, China
| | - Baoqing Sun
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
| | - Xizhuo Sun
- Department of Respirology and Allergy. Third Affiliated Hospital of Shenzhen University. Shenzhen, China
| | - Hua-Ling Chen
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli County, Taiwan
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhigang Liu
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Jun Yang
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen, China.
| | - Xiaojun Xiao
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China.
| | - Shau-Ku Huang
- State Key Laboratory of Respiratory Disease for Allergy at Shenzhen University, Shenzhen Key Laboratory of Allergy and Immunology, Shenzhen University School of Medicine, Shenzhen, China; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli County, Taiwan; Department of Medicine, Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, Md.
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7
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Giron LB, Abdel-Mohsen M. Viral and Host Biomarkers of HIV Remission Post Treatment Interruption. Curr HIV/AIDS Rep 2022; 19:217-233. [PMID: 35438384 DOI: 10.1007/s11904-022-00607-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2022] [Indexed: 01/19/2023]
Abstract
PURPOSE OF REVIEW HIV rebound/remission after antiretroviral therapy (ART) interruption is likely influenced by (a) the size of the inducible replication-competent HIV reservoir and (b) factors in the host environment that influence immunological pressures on this reservoir. Identifying viral and/or host biomarkers of HIV rebound after ART cessation may improve the safety of treatment interruptions and our understanding of how the viral-host interplay results in post-treatment control. Here we review the predictive and functional significance of recently suggested viral and host biomarkers of time to viral rebound and post-treatment control following ART interruption. RECENT FINDINGS There are currently no validated viral or host biomarkers of viral rebound; however, several biomarkers have been recently suggested. A combination of viral and host factors will likely be needed to predict viral rebound and to better understand the mechanisms contributing to post-treatment control of HIV, critical steps to developing a cure for HIV infection.
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Ham HY, Kang SH, Song DK. Lysophosphatidylcholine induces azurophil granule translocation via Rho/Rho kinase/F-actin polymerization in human neutrophils. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY 2022; 26:175-182. [PMID: 35477545 PMCID: PMC9046897 DOI: 10.4196/kjpp.2022.26.3.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/03/2022] [Accepted: 02/04/2022] [Indexed: 11/18/2022]
Abstract
Translocation of azurophil granules is pivotal for bactericidal activity of neutrophils, the first-line defense cells against pathogens. Previously, we reported that lysophosphatidylcholine (LPC), an endogenous lipid, enhances bactericidal activity of human neutrophils via increasing translocation of azurophil granules. However, the precise mechanism of LPC-induced azurophil granule translocation was not fully understood. Treatment of neutrophil with LPC significantly increased CD63 (an azurophil granule marker) surface expression. Interestingly, cytochalasin B, an inhibitor of action polymerization, blocked LPC-induced CD63 surface expression. LPC increased F-actin polymerization. LPC-induced CD63 surface expression was inhibited by both a Rho specific inhibitor, Tat-C3 exoenzyme, and a Rho kinase (ROCK) inhibitor, Y27632 which also inhibited LPC-induced F-actin polymerization. LPC induced Rho-GTP activation. NSC23766, a Rac inhibitor, however, did not affect LPC-induced CD63 surface expression. Theses results suggest a novel regulatory mechanism for azurophil granule translocation where LPC induces translocation of azurophil granules via Rho/ROCK/F-actin polymerization pathway.
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Affiliation(s)
- Hwa-Yong Ham
- Department of Pharmacology, Hallym University College of Medicine, Chuncheon 24252, Korea
| | - Shin-Hae Kang
- Department of Pharmacology, Hallym University College of Medicine, Chuncheon 24252, Korea
| | - Dong-Keun Song
- Department of Pharmacology, Hallym University College of Medicine, Chuncheon 24252, Korea
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9
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Xiong NX, Luo SW, Fan LF, Mao ZW, Luo KK, Liu SJ, Wu C, Hu FZ, Wang S, Wen M, Liu QF. Comparative analysis of erythrocyte hemolysis, plasma parameters and metabolic features in red crucian carp (Carassius auratus red var) and triploid hybrid fish following Aeromonas hydrophila challenge. FISH & SHELLFISH IMMUNOLOGY 2021; 118:369-384. [PMID: 34571155 DOI: 10.1016/j.fsi.2021.09.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/18/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
Aeromonas hydrophila can pose a great threat to survival of freshwater fish. In this study, A. hydrophila challenge could promote the erythrocyte hemolysis, increase free hemoglobin (FHB) level and generate malondialdehyde (MDA) production in plasma but decrease the levels of total antioxidant capacity (T-AOC), total superoxide dismutase (SOD), catalase (CAT), alkaline phosphatase (ALP) and lysozyme (LZM) of red crucian carp (RCC, 2 N = 100) and triploid hybrid fish (3 N fish, 3 N = 150) following A. hydrophila challenge. Elevated expression levels of heat shock protein 90 alpha (HSP90α), matrix metalloproteinase 9 (MMP-9), free fatty acid receptor 3 (FFAR3), paraoxonase 2 (PON2) and cytosolic phospholipase A2 (cPLA2) were observed in A. hydrophila-infected fish. In addition, A. hydrophila challenge could significantly increase expressions of cortisol, leucine, isoleucine, glutamate and polyunsaturated fatty acids (PUFAs) in RCC and 3 N, while glycolysis and tricarboxylic acid cycle appeared to be inactive. We identified differential fatty acid derivatives and their metabolic networks as crucial biomarkers from metabolic profiles of different ploidy cyprinid fish subjected to A. hydrophila infection. These results highlighted the comparative metabolic strategy of different ploidy cyprinid fish against bacterial infection.
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Affiliation(s)
- Ning-Xia Xiong
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Sheng-Wei Luo
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China.
| | - Lan-Fen Fan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Zhuang-Wen Mao
- Hunan Provincial Key Laboratory of Nutrition and Quality Control of Aquatic Animals, Department of Biological and Environmental Engineering, Changsha University, Changsha, 410022, PR China
| | - Kai-Kun Luo
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Shao-Jun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China.
| | - Chang Wu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Fang-Zhou Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Shi Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Ming Wen
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
| | - Qing-Feng Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, PR China
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10
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Witte TE, Shields S, Heberlig GW, Darnowski MG, Belov A, Sproule A, Boddy CN, Overy DP, Smith ML. A metabolomic study of vegetative incompatibility in Cryphonectria parasitica. Fungal Genet Biol 2021; 157:103633. [PMID: 34619360 DOI: 10.1016/j.fgb.2021.103633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/06/2021] [Accepted: 09/27/2021] [Indexed: 11/26/2022]
Abstract
Vegetative incompatibility (VI) is a form of non-self allorecognition in filamentous fungi that restricts conspecific hyphal fusion and the formation of heterokaryons. In the chestnut pathogenic fungus, Cryphonectria parasitica, VI is controlled by six vic loci and has been of particular interest because it impedes the spread of hypoviruses and thus biocontrol strategies. We use nuclear magnetic resonance and high-resolution mass spectrometry to characterize alterations in the metabolome of C. parasitica over an eight-day time course of vic3 incompatibility. Our findings support transcriptomic data that indicated remodeling of secondary metabolite profiles occurs during vic3 -associated VI. VI-associated secondary metabolites include novel forms of calbistrin, decumbenone B, a sulfoxygenated farnesyl S-cysteine analog, lysophosphatidylcholines, and an as-yet unidentified group of lipid disaccharides. The farnesyl S-cysteine analog is structurally similar to pheromones predicted to be produced during VI and is here named 'crypheromonin'. Mass features associated with C. parasitica secondary metabolites skyrin, rugulosin and cryphonectric acid were also detected but were not VI specific. Partitioning of VI-associated secondary metabolites was observed, with crypheromonins and most calbistrins accumulating in the growth medium over time, whereas lysophosphatidylcholines, lipid disaccharide-associated mass features and other calbistrin-associated mass features peaked at distinct time points in the mycelium. Secondary metabolite biosynthetic gene clusters and potential biological roles associated with the detected secondary metabolites are discussed.
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Affiliation(s)
- Thomas E Witte
- Carleton University, Department of Biology, Ottawa, Canada.
| | - Sam Shields
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Ottawa, Canada.
| | - Graham W Heberlig
- University of Ottawa, Department of Chemistry and Biomolecular Sciences, Ottawa, Canada.
| | - Mike G Darnowski
- University of Ottawa, Department of Chemistry and Biomolecular Sciences, Ottawa, Canada.
| | - Anatoly Belov
- Carleton University, Department of Biology, Ottawa, Canada
| | - Amanda Sproule
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Ottawa, Canada.
| | - Christopher N Boddy
- University of Ottawa, Department of Chemistry and Biomolecular Sciences, Ottawa, Canada.
| | - David P Overy
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Ottawa, Canada.
| | - Myron L Smith
- Carleton University, Department of Biology, Ottawa, Canada.
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11
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Liu J, Xiu M, Liu H, Wang J, Li X. Plasma Lysophosphatidylcholine and Lysophosphatidylethanolamine Levels Were Associated With the Therapeutic Response to Olanzapine in Female Antipsychotics-naïve First-episode Patients With Schizophrenia. Front Pharmacol 2021; 12:735196. [PMID: 34603051 PMCID: PMC8481943 DOI: 10.3389/fphar.2021.735196] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/06/2021] [Indexed: 01/31/2023] Open
Abstract
Background: Accumulating studies have shown that the pathophysiology of schizophrenia may be associated with aberrant lysophospolipid metabolism in the early stage of brain development. Recent evidence demonstrates that antipsychotic medication can regulate the phospholipase activity. However, it remains unclear whether lysophospolipid is associated with the therapeutic response to antipsychotic medication in schizophrenia. This study aimed to investigate the influence of olanzapine monotherapy on lysophosphatidylcholine (LPC) and lysophosphatidylethanolamine (LPE) and the association between symptom improvement and changes of LPC and LPE levels during treatment in antipsychotic-naïve first-episode (ANFE) patients. Materials and Methods: The psychotic symptoms were evaluated by the Positive and Negative Syndrome Scale (PANSS). 25 ANFE patients were treated with olanzapine for 1 mo. The levels of LPC and LPE were determined and psychotic symptoms were assessed at baseline and at 1-mo follow-up. Results: Relative to baseline, the psychotic symptoms were significantly reduced after olanzapine treatment, except for negative symptoms. Moreover, the levels of most LPC and LPE increased after treatment. Interestingly, increased LPC(18:3) and LPC(20:2) levels were positively associated with the reduction rates of PANSS positive subscore. In addition, baseline levels of LPE(20:5), LPE(18:3) and LPE(22:5) were predictors for the reduction of positive symptoms. Conclusion: Our study reveals that the levels of lysophospolipid are associated with the improvement of positive symptoms, indicating that LPC may be a potential therapeutic target for olanzapine in schizophrenia. Moreover, baseline LPE levels were predictive biomarkers for the therapeutic response to olanzapine in the early stage of treatment in ANFE patients.
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Affiliation(s)
- Jiahong Liu
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Meihong Xiu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Haixia Liu
- Department of Psychiatry, Shandong Mental Health Center, Jinan, China
| | - Jun Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Xirong Li
- Department of Psychiatry, Shandong Mental Health Center, Jinan, China
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12
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Omi J, Kano K, Aoki J. Current Knowledge on the Biology of Lysophosphatidylserine as an Emerging Bioactive Lipid. Cell Biochem Biophys 2021; 79:497-508. [PMID: 34129148 PMCID: PMC8551102 DOI: 10.1007/s12013-021-00988-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2021] [Indexed: 01/22/2023]
Abstract
Lysophosphatidylserine (LysoPS) is an emerging lysophospholipid (LPL) mediator, which acts through G protein-coupled receptors, like lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P). LysoPS is detected in various tissues and cells and thought to be produced mainly by the deacylation of phosphatidylserine. LysoPS has been known to stimulate degranulation of mast cells. Recently, four LysoPS-specific G protein-coupled receptors (GPCRs) were identified. These GPCRs belong to the P2Y family which covers receptors for nucleotides and LPLs and are predominantly expressed in immune cells such as lymphocytes and macrophages. Studies on knockout mice of these GPCRs have revealed that LysoPS has immune-modulatory functions. Up-regulation of a LysoPS-producing enzyme, PS-specific phospholipase A1, was frequently observed in situations where the immune system is activated including autoimmune diseases and organ transplantations. Therefore, modulation of LysoPS signaling appears to be a promising method for providing therapies for the treatment of immune diseases. In this review, we summarize the biology of LysoPS-producing enzymes and receptors, recent developments in LysoPS signal modulators, and prospects for future therapeutic applications.
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Affiliation(s)
- Jumpei Omi
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Kuniyuki Kano
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
- AMED-LEAP, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Tokyo, Japan
| | - Junken Aoki
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan.
- AMED-LEAP, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Tokyo, Japan.
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13
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Sisignano M, Fischer MJM, Geisslinger G. Proton-Sensing GPCRs in Health and Disease. Cells 2021; 10:cells10082050. [PMID: 34440817 PMCID: PMC8392051 DOI: 10.3390/cells10082050] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/17/2022] Open
Abstract
The group of proton-sensing G-protein coupled receptors (GPCRs) consists of the four receptors GPR4, TDAG8 (GPR65), OGR1 (GPR68), and G2A (GPR132). These receptors are cellular sensors of acidification, a property that has been attributed to the presence of crucial histidine residues. However, the pH detection varies considerably among the group of proton-sensing GPCRs and ranges from pH of 5.5 to 7.8. While the proton-sensing GPCRs were initially considered to detect acidic cellular environments in the context of inflammation, recent observations have expanded our knowledge about their physiological and pathophysiological functions and many additional individual and unique features have been discovered that suggest a more differentiated role of these receptors in health and disease. It is known that all four receptors contribute to different aspects of tumor biology, cardiovascular physiology, and asthma. However, apart from their overlapping functions, they seem to have individual properties, and recent publications identify potential roles of individual GPCRs in mechanosensation, intestinal inflammation, oncoimmunological interactions, hematopoiesis, as well as inflammatory and neuropathic pain. Here, we put together the knowledge about the biological functions and structural features of the four proton-sensing GPCRs and discuss the biological role of each of the four receptors individually. We explore all currently known pharmacological modulators of the four receptors and highlight potential use. Finally, we point out knowledge gaps in the biological and pharmacological context of proton-sensing GPCRs that should be addressed by future studies.
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Affiliation(s)
- Marco Sisignano
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, University Hospital of Goethe-University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany;
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
- Correspondence:
| | - Michael J. M. Fischer
- Center for Physiology and Pharmacology, Institute of Physiology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090 Vienna, Austria;
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, University Hospital of Goethe-University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany;
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
- Fraunhofer Cluster of Excellence for Immune-Mediated Diseases (CIMD), Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
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14
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Liu JH, Chen N, Guo YH, Guan XN, Wang J, Wang D, Xiu MH. Metabolomics-based understanding of the olanzapine-induced weight gain in female first-episode drug-naïve patients with schizophrenia. J Psychiatr Res 2021; 140:409-415. [PMID: 34144444 DOI: 10.1016/j.jpsychires.2021.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 05/30/2021] [Accepted: 06/04/2021] [Indexed: 12/22/2022]
Abstract
Previous studies have demonstrated that patients with schizophrenia (SZ) have greater rate of metabolic disorder as compared with the control population, which likely be the consequence of use of atypical antipsychotics. Olanzapine is a widely used antipsychotic, which increases the weight of SZ patients. However, the underlying mechanism remains poorly understood. Here we report the metabolomics-based understanding of the weight gain induced by olanzapine. 57 first-episode drug-naïve patients (FEDN) were recruited, of whom 27 patients completed a 4-week clinical trial. We then profiled the metabolomes of their plasma with the LC-MS-based nontargeted metabolomics approach at the baseline and after olanzapine monotherapy for 4 weeks. We observed that the plasma of the olanzapine-treated patient had significantly higher lysophosphatidylcholine (LysoPC), lysophosphatidylethanolamine (LysoPE) and lower carnitine as compared with that of the baseline plasma samples. Moreover, regression analyses indicated that the change of LysoPC(14:0) level was an independent contributor to the olanzapine-induced weight gain. Our study suggests that the metabolomics-based approach may facilitate the identification of biomarkers associated with the metabolic disorder causing by antipsychotic in schizophrenia patients.
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Affiliation(s)
- Jia Hong Liu
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Nan Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Yan Hong Guo
- Qingdao Mental Health Center, Qingdao University, Qingdao, China
| | - Xiao Ni Guan
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Jun Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Dong Wang
- Department of Clinical Psychology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.
| | - Mei Hong Xiu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China.
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15
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Cui X, Xing R, Tian Y, Wang M, Sun Y, Xu Y, Yang Y, Zhao Y, Xie L, Xiao Y, Li D, Zheng B, Liu M, Chen H. The G2A Receptor Deficiency Aggravates Atherosclerosis in Rats by Regulating Macrophages and Lipid Metabolism. Front Physiol 2021; 12:659211. [PMID: 34381373 PMCID: PMC8351205 DOI: 10.3389/fphys.2021.659211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/13/2021] [Indexed: 11/16/2022] Open
Abstract
The orphan G protein-coupled receptor G2A has been linked to atherosclerosis development. However, available data from mouse models are controversial. Rat G2A receptor bears more similarities with its human homolog. We proposed that the atherosclerosis model established from Ldlr–/– rat, which has been reported to share more similar phenotypes with the human disease, may help to further understand this lipid receptor. G2A deletion was found markedly aggravated in the lipid disorder in the rat model, which has not been reported in mouse studies. Examination of aortas revealed exacerbated atherosclerotic plaques in G2A deficient rats, together with increased oxidative stress and macrophage accumulation. In addition, consistently promoted migration and apoptosis were noticed in G2A deficient macrophages, even in macrophages from G2A single knockout rats. Further analysis found significantly declined phosphorylation of PI3 kinase (PI3K) and AKT, together with reduced downstream genes Bcl2 and Bcl-xl, suggesting possible involvement of PI3K/AKT pathway in G2A regulation to macrophage apoptosis. These data indicate that G2A modulates atherosclerosis by regulating lipid metabolism and macrophage migration and apoptosis. Our study provides a new understanding of the role of G2A in atherosclerosis, supporting it as a potential therapeutic target.
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Affiliation(s)
- Xueqin Cui
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Roumei Xing
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yue Tian
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Man Wang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yue Sun
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yongqian Xu
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yiqing Yang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yongliang Zhao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Ling Xie
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yufang Xiao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Dali Li
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Biao Zheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China.,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Huaqing Chen
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
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16
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Drzazga A, Kamińska D, Gliszczyńska A, Gendaszewska-Darmach E. Isoprenoid Derivatives of Lysophosphatidylcholines Enhance Insulin and GLP-1 Secretion through Lipid-Binding GPCRs. Int J Mol Sci 2021; 22:5748. [PMID: 34072220 PMCID: PMC8197866 DOI: 10.3390/ijms22115748] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 05/20/2021] [Accepted: 05/25/2021] [Indexed: 12/13/2022] Open
Abstract
Insulin plays a significant role in carbohydrate homeostasis as the blood glucose lowering hormone. Glucose-induced insulin secretion (GSIS) is augmented by glucagon-like peptide (GLP-1), a gastrointestinal peptide released in response to ingesting nutriments. The secretion of insulin and GLP-1 is mediated by the binding of nutrients to G protein-coupled receptors (GPCRs) expressed by pancreatic β-cells and enteroendocrine cells, respectively. Therefore, insulin secretagogues and incretin mimetics currently serve as antidiabetic treatments. This study demonstrates the potency of synthetic isoprenoid derivatives of lysophosphatidylcholines (LPCs) to stimulate GSIS and GLP-1 release. Murine insulinoma cell line (MIN6) and enteroendocrinal L cells (GLUTag) were incubated with LPCs bearing geranic acid (1-GA-LPC), citronellic acid (1-CA-LPC), 3,7-dimethyl-3-vinyloct-6-enoic acid (GERA-LPC), and (E)-3,7,11-trimethyl- 3-vinyldodeca-6,10-dienoic acid (1-FARA-LPC). Respective free terpene acids were also tested for comparison. Besides their insulin- and GLP-1-secreting capabilities, we also investigated the cytotoxicity of tested compounds, the ability to intracellular calcium ion mobilization, and targeted GPCRs involved in maintaining lipid and carbohydrate homeostasis. We observed the high cytotoxicity of 1-GERA-LPC and 1-FARA-LPC in contrast 1-CA-LPC and 1-GA-LPC. Moreover, 1-CA-LPC and 1-GA-LPC demonstrated the stimulatory effect on GSIS and 1-CA-LPC augmented GLP-1 secretion. Insulin and GLP-1 release appeared to be GPR40-, GPR55-, GPR119- and GPR120-dependent.
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Affiliation(s)
- Anna Drzazga
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (D.K.)
| | - Daria Kamińska
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (D.K.)
| | - Anna Gliszczyńska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Edyta Gendaszewska-Darmach
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (D.K.)
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17
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Lysophosphatidylcholine in phospholipase A 2-modified LDL triggers secretion of angiopoietin 2. Atherosclerosis 2021; 327:87-99. [PMID: 34020784 DOI: 10.1016/j.atherosclerosis.2021.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND AIMS Secretory phospholipase A2 (PLA2) hydrolyzes LDL phospholipids generating modified LDL particles (PLA2-LDL) with increased atherogenic properties. Exocytosis of Weibel-Palade bodies (WPB) releases angiopoietin 2 (Ang2) and externalizes P-selectin, which both play important roles in vascular inflammation. Here, we investigated the effects of PLA2-LDL on exocytosis of WPBs. METHODS Human coronary artery endothelial cells (HCAECs) were stimulated with PLA2- LDL, and its uptake and effect on Ang2 release, leukocyte adhesion, and intracellular calcium levels were measured. The effects of PLA2-LDL on Ang2 release and WPB exocytosis were measured in and ex vivo in mice. RESULTS Exposure of HCAECs to PLA2-LDL triggered Ang2 secretion and promoted leukocyte-HCAEC interaction. Lysophosphatidylcholine was identified as a critical component of PLA2-LDL regulating the WPB exocytosis, which was mediated by cell-surface proteoglycans, phospholipase C, intracellular calcium, and cytoskeletal remodeling. PLA2-LDL also induced murine endothelial WPB exocytosis in blood vessels in and ex vivo, as evidenced by secretion of Ang2 in vivo, P-selectin translocation to plasma membrane in intact endothelial cells in thoracic artery and tracheal vessels, and reduced Ang2 staining in tracheal endothelial cells. Finally, in contrast to normal human coronary arteries, in which Ang2 was present only in the endothelial layer, at sites of advanced atherosclerotic lesions, Ang2 was detected also in the intima, media, and adventitia. CONCLUSIONS Our studies reveal PLA2-LDL as a potent agonist of endothelial WPB exocytosis, resulting in increased secretion of Ang2 and translocation of P-selectin. The results provide mechanistic insight into PLA2-LDL-dependent promotion of vascular inflammation and atherosclerosis.
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18
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Leimanis-Laurens ML, Ferguson K, Wolfrum E, Boville B, Sanfilippo D, Lydic TA, Prokop JW, Rajasekaran S. Pediatric Multi-Organ Dysfunction Syndrome: Analysis by an Untargeted "Shotgun" Lipidomic Approach Reveals Low-Abundance Plasma Phospholipids and Dynamic Recovery over 8-Day Period, a Single-Center Observational Study. Nutrients 2021; 13:774. [PMID: 33673500 PMCID: PMC7997359 DOI: 10.3390/nu13030774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/12/2021] [Accepted: 02/23/2021] [Indexed: 12/30/2022] Open
Abstract
Lipids are molecules involved in metabolism and inflammation. This study investigates the plasma lipidome for markers of severity and nutritional status in critically ill children. Children with multi-organ dysfunction syndrome (MODS) (n = 24) are analyzed at three time-points and cross-referenced to sedation controls (n = 4) for a total of N = 28. Eight of the patients with MODS, needed veno-arterial extracorporeal membrane oxygenation (VA ECMO) support to survive. Blood plasma lipid profiles are quantified by nano-electrospray (nESI), direct infusion high resolution/accurate mass spectrometry (MS), and tandem mass spectrometry (MS/MS), and compared to nutritional profiles and pediatric logistic organ dysfunction (PELOD) scores. Our results show that PELOD scores were not significantly different between MODS and ECMO cases across time-points (p = 0.66). Lipid profiling provides stratification between sedation controls and all MODS patients for total lysophosphatidylserine (lysoPS) (p-value = 0.004), total phosphatidylserine (PS) (p-value = 0.015), and total ether-linked phosphatidylethanolamine (ether-PE) (p-value = 0.03) after adjusting for sex and age. Nutrition intake over time did not correlate with changes in lipid profiles, as measured by caloric and protein intake. Lipid measurement in the intensive care environment shows dynamic changes over an 8-day pediatric intensive care unit (PICU) course, suggesting novel metabolic indicators for defining critically ill children.
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Affiliation(s)
- Mara L. Leimanis-Laurens
- Pediatric Critical Care Unit, Helen DeVos Children’s Hospital, 100 Michigan Street NE, Grand Rapids, MI 49503, USA; (K.F.); (B.B.); (D.S.); (S.R.)
- Department of Pediatric and Human Development, College of Human Medicine, Michigan State University, Life Sciences Bldg. 1355 Bogue Street, East Lansing, MI 48824, USA;
| | - Karen Ferguson
- Pediatric Critical Care Unit, Helen DeVos Children’s Hospital, 100 Michigan Street NE, Grand Rapids, MI 49503, USA; (K.F.); (B.B.); (D.S.); (S.R.)
| | - Emily Wolfrum
- Van Andel Institute, Bioinformatics & Biostatistics Core, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA;
| | - Brian Boville
- Pediatric Critical Care Unit, Helen DeVos Children’s Hospital, 100 Michigan Street NE, Grand Rapids, MI 49503, USA; (K.F.); (B.B.); (D.S.); (S.R.)
- Department of Pediatric and Human Development, College of Human Medicine, Michigan State University, Life Sciences Bldg. 1355 Bogue Street, East Lansing, MI 48824, USA;
| | - Dominic Sanfilippo
- Pediatric Critical Care Unit, Helen DeVos Children’s Hospital, 100 Michigan Street NE, Grand Rapids, MI 49503, USA; (K.F.); (B.B.); (D.S.); (S.R.)
- Department of Pediatric and Human Development, College of Human Medicine, Michigan State University, Life Sciences Bldg. 1355 Bogue Street, East Lansing, MI 48824, USA;
| | - Todd A. Lydic
- Department of Physiology, Collaborative Mass Spectrometry Core, 567 Wilson Road, East Lansing, MI 48824, USA;
| | - Jeremy W. Prokop
- Department of Pediatric and Human Development, College of Human Medicine, Michigan State University, Life Sciences Bldg. 1355 Bogue Street, East Lansing, MI 48824, USA;
- Department of Pharmacology and Toxicology, Michigan State University, 1355 Bogue Street, East Lansing, MI 48824, USA
| | - Surender Rajasekaran
- Pediatric Critical Care Unit, Helen DeVos Children’s Hospital, 100 Michigan Street NE, Grand Rapids, MI 49503, USA; (K.F.); (B.B.); (D.S.); (S.R.)
- Department of Pediatric and Human Development, College of Human Medicine, Michigan State University, Life Sciences Bldg. 1355 Bogue Street, East Lansing, MI 48824, USA;
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19
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Abstract
Lipids are biologically active molecules involved in a variety of cellular processes and immunological functions, including inflammation. It was recently shown that phospholipids and their derivatives, lysophospholipids, can reactivate latent (dormant) tumor cells, causing cancer recurrence. However, the potential link between lipids and HIV latency, persistence, and viral rebound after cessation of antiretroviral therapy (ART) has never been investigated. We explored the links between plasma lipids and the burden of HIV during ART. We profiled the circulating lipidome from plasma samples from 24 chronically HIV-infected individuals on suppressive ART who subsequently underwent an analytic treatment interruption (ATI) without concurrent immunotherapies. The pre-ATI viral burden was estimated as time-to-viral-rebound and viral load set points post-ATI. We found that higher pre-ATI levels of lysophospholipids, including the proinflammatory lysophosphatidylcholine, were associated with faster time-to-viral-rebound and higher viral set points upon ART cessation. Furthermore, higher pre-ATI levels of the proinflammatory by-product of intestinal lysophosphatidylcholine metabolism, trimethylamine-N-oxide (TMAO), were also linked to faster viral rebound post-ART. Finally, pre-ATI levels of several phosphatidylcholine species (lysophosphatidylcholine precursors) correlated strongly with higher pre-ATI levels of HIV DNA in peripheral CD4+ T cells. Our proof-of-concept data point to phospholipids and lysophospholipids as plausible proinflammatory contributors to HIV persistence and rapid post-ART HIV rebound. The potential interplay between phospholipid metabolism and both the establishment and maintenance of HIV latent reservoirs during and after ART warrants further investigation.
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Kim HJ, Sim MS, Lee DH, Kim C, Choi Y, Park H, Chung IY. Lysophosphatidylserine induces eosinophil extracellular trap formation and degranulation: Implications in severe asthma. Allergy 2020; 75:3159-3170. [PMID: 32535937 DOI: 10.1111/all.14450] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/06/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent evidence demonstrates that activated eosinophils undergo a distinct form of lytic cell death, accompanied by formation of DNA-based eosinophil extracellular trap (EET) and degranulation, enhancing inflammatory immune responses in asthmatic airways. We previously showed that human blood eosinophils undergo degranulation in response to lysophosphatidylserine (LysoPS), an inflammatory lipid mediator, and strongly express P2Y10, a LysoPS receptor. METHODS We evaluated EET, degranulation, and cell death of eosinophils in response to various concentrations of LysoPS. We also compared responsiveness to LysoPS between eosinophils from severe and nonsevere asthmatics. RESULTS Extensive EET formation was elicited from a substantial fraction of stimulated eosinophils in response to 50 μmol/L LysoPS. Analyses for LDH and eosinophil-derived neurotoxin release showed that both lytic cell death and degranulation accompanied EET formation in response to LysoPS. Cytological analyses demonstrated that citrullinated histone 3 was present in the extracellular, filamentous DNA structure embedded with eosinophil granules. The LysoPS-induced EET was independent of ROS production and irrelevant to several signaling pathways examined, but dependent on protein arginine deiminase 4. A low concentration of LysoPS (5 μmol/L) did not induce EET or degranulation, but significantly increased platelet-activating factor-induced degranulation. Eosinophils from severe asthmatics exhibited greater degranulation, but not EET formation, in response to LysoPS (50 μmol/L), than those from nonsevere asthmatics, along with great expression of surface P2Y10. CONCLUSIONS We identified a novel function of LysoPS, namely induction of EET in association with cytolysis and degranulation. LysoPS-dependent EET or degranulation plays a potential role in eosinophilic inflammation of severe asthma.
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Affiliation(s)
- Hye Jeong Kim
- Department of Bionanotechnology College of Technology Hanyang University Ansan South Korea
| | - Myeong Seong Sim
- Department of Bionanotechnology College of Technology Hanyang University Ansan South Korea
| | - Dong Hyun Lee
- Department of Allergy and Clinical Immunology Ajou University School of Medicine Suwon South Korea
| | - Chun Kim
- Department of Molecular and Life Science College of Science and Convergence Hanyang University Ansan South Korea
| | - Youngwoo Choi
- Department of Allergy and Clinical Immunology Ajou University School of Medicine Suwon South Korea
| | - Hae‐Sim Park
- Department of Allergy and Clinical Immunology Ajou University School of Medicine Suwon South Korea
| | - Il Yup Chung
- Department of Bionanotechnology College of Technology Hanyang University Ansan South Korea
- Department of Molecular and Life Science College of Science and Convergence Hanyang University Ansan South Korea
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21
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Untargeted-metabolomics differentiation between poultry samples slaughtered with and without detaching spinal cord. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.10.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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22
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Booth LA, Smith TK. Lipid metabolism in Trypanosoma cruzi: A review. Mol Biochem Parasitol 2020; 240:111324. [PMID: 32961207 DOI: 10.1016/j.molbiopara.2020.111324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/02/2020] [Accepted: 09/11/2020] [Indexed: 01/08/2023]
Abstract
The cellular membranes of Trypanosoma cruzi, like all eukaryotes, contain varying amounts of phospholipids, sphingolipids, neutral lipids and sterols. A multitude of pathways exist for the de novo synthesis of these lipid families but Trypanosoma cruzi has also become adapted to scavenge some of these lipids from the host. Completion of the TriTryp genomes has led to the identification of many putative genes involved in lipid synthesis, revealing some interesting differences to higher eukaryotes. Although many enzymes involved in lipid synthesis have yet to be characterised, completed experiments have shown the indispensability of some lipid metabolic pathways. Furthermore, the bioactive lipids of Trypanosoma cruzi and their effects on the host are becoming increasingly studied. Further studies on lipid metabolism in Trypanosoma cruzi will no doubt reveal some attractive targets for therapeutic intervention as well as reveal the interplay between parasite lipids, host response and pathogenesis.
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Affiliation(s)
- Leigh-Ann Booth
- Biomedical Sciences Research Complex, University of St Andrews, North Haugh, St Andrews, Scotland, KY16 9ST, United Kingdom
| | - Terry K Smith
- Biomedical Sciences Research Complex, University of St Andrews, North Haugh, St Andrews, Scotland, KY16 9ST, United Kingdom.
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23
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Liberale L, Montecucco F, Schwarz L, Lüscher TF, Camici GG. Inflammation and cardiovascular diseases: lessons from seminal clinical trials. Cardiovasc Res 2020; 117:411-422. [PMID: 32666079 DOI: 10.1093/cvr/cvaa211] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/29/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
Inflammation has been long regarded as a key contributor to atherosclerosis. Inflammatory cells and soluble mediators play critical roles throughout arterial plaque development and accordingly, targeting inflammatory pathways effectively reduces atherosclerotic burden in animal models of cardiovascular (CV) diseases. Yet, clinical translation often led to inconclusive or even contradictory results. The Canakinumab Anti-inflammatory Thrombosis Outcome Study (CANTOS) followed by the Colchicine Cardiovascular Outcomes Trial (COLCOT) were the first two randomized clinical trials to convincingly demonstrate the effectiveness of specific anti-inflammatory treatments in the field of CV prevention, while other phase III trials-including the Cardiovascular Inflammation Reduction Trial one using methotrexate-were futile. This manuscript reviews the main characteristics and findings of recent anti-inflammatory Phase III trials in cardiology and discusses their similarities and differences in order to get further insights into the contribution of specific inflammatory pathways on CV outcomes. CANTOS and COLCOT demonstrated efficacy of two anti-inflammatory drugs (canakinumab and colchicine, respectively) in the secondary prevention of major adverse CV events (MACE) thus providing the first confirmation of the involvement of a specific inflammatory pathway in human atherosclerotic CV disease (ASCVD). Also, they highlighted the NOD-, LRR-, and pyrin domain-containing protein 3 inflammasome-related pathway as an effective therapeutic target to blunt ASCVD. In contrast, other trials interfering with a number of inflammasome-independent pathways failed to provide benefit. Lastly, all anti-inflammatory trials underscored the importance of balancing the risk of impaired host defence with an increase in infections and the prevention of MACE in CV patients with residual inflammatory risk.
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Affiliation(s)
- Luca Liberale
- Center for Molecular Cardiology, University of Zurich, 12 Wagistrasse, 8952 Schlieren, Switzerland.,First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa - Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy.,First Clinic of Internal Medicine, Department of Internal Medicine, Centre of Excellence for Biomedical Research (CEBR), University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Lena Schwarz
- Center for Molecular Cardiology, University of Zurich, 12 Wagistrasse, 8952 Schlieren, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, 12 Wagistrasse, 8952 Schlieren, Switzerland.,Royal Brompton and Harefield Hospitals and Imperial College, London, UK
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zurich, 12 Wagistrasse, 8952 Schlieren, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland.,Department of Research and Education, University Hospital Zurich, Rämistrasse 100, 8092, Zurich, Switzerland
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24
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Regulation of plasma glycero-lysophospholipid levels by lipoprotein metabolism. Biochem J 2020; 476:3565-3581. [PMID: 31746967 DOI: 10.1042/bcj20190498] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 11/19/2019] [Accepted: 11/19/2019] [Indexed: 12/26/2022]
Abstract
Glycero-lysophospholipids, such as lysophosphatidic acids and lysophosphatidylserine, are gathering attention, since specific receptors have been identified. Most of these compounds have been proposed to be bound to albumin, while their associations with lipoproteins have not been fully elucidated. Therefore, in this study, we aimed to investigate the contents of glycero-lysophospholipids (lysophosphatidic acids, lysophosphatidylcholine, lysophosphatidylethanolamine, lysophosphatidylglycerol, lysophosphatidylinositol, and lysophosphatidylserine) on lipoproteins and the modulation of their metabolism by lipoprotein metabolism. We observed that moderate amounts of glycero-lysophospholipids, with the exception of lysophosphatidylserine, were distributed on the LDL and HDL fractions, and glycero-lysophospholipids that had bound to albumin were observed in lipoprotein fractions when they were co-incubated. The overexpression of cholesteryl ester transfer protein decreased the plasma levels of lysophosphatidylcholine, lysophosphatidylethanolamine, lysophosphatidylglycerol, and lysophosphatidylinositol and it increased their contents in apoB-containing lipoproteins, while it decreased their contents in HDL and lipoprotein-depleted fractions in mice. The overexpression of the LDL receptor (LDLr) decreased the plasma levels of lysophosphatidylcholine, lysophosphatidylethanolamine, lysophosphatidylglycerol, and lysophosphatidylinositol and decreased the contents of these compounds in the LDL, HDL, and lipoprotein-depleted fractions, while the knockdown of the LDLr increased them. These results suggest the potential importance of glycero-lysophospholipids in the pleiotropic effects of lipoproteins as well as the importance of lipoprotein metabolism in the regulation of glycero-lysophospholipids.
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25
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Drzazga A, Okulus M, Rychlicka M, Biegała Ł, Gliszczyńska A, Gendaszewska-Darmach E. Lysophosphatidylcholine Containing Anisic Acid Is Able to Stimulate Insulin Secretion Targeting G Protein Coupled Receptors. Nutrients 2020; 12:E1173. [PMID: 32331428 PMCID: PMC7230207 DOI: 10.3390/nu12041173] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 12/31/2022] Open
Abstract
Diabetes mellitus is a worldwide health problem with high rates of mortality and morbidity. Management of diabetes mellitus by dietary components is achievable especially at the initial stage of the disease. Several studies confirmed the antidiabetic activities of simple phenolic acids and lysophosphatidylcholine (LPC). The main goal of this study was to identify new potential insulin secretion modulators obtained by combining the structures of two natural compounds, namely O-methyl derivatives of phenolic acids and phospholipids. LPC and phosphatidylcholine bearing methoxylated aromatic carboxylic acids were tested as potential agents able to improve glucose-stimulated insulin secretion (GSIS) and intracellular calcium mobilization in MIN6 β pancreatic cell line. Our results show that LPC with covalently bonded molecule of p-anisic acid at the sn-1 position was able to induce GSIS and intracellular calcium flux. Notably, 1-anisoyl-2-hydroxy-sn-glycero-3-phosphocholine did not affect the viability of MIN6 cells, suggesting its potential safe use. Furthermore, we have shown that three G protein coupled receptors, namely GPR40, GPR55, and GPR119, are targeted by this LPC derivative.
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Affiliation(s)
- Anna Drzazga
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (Ł.B.)
| | - Marta Okulus
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (M.O.); (M.R.)
| | - Magdalena Rychlicka
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (M.O.); (M.R.)
| | - Łukasz Biegała
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (Ł.B.)
| | - Anna Gliszczyńska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland; (M.O.); (M.R.)
| | - Edyta Gendaszewska-Darmach
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (A.D.); (Ł.B.)
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26
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Knuplez E, Curcic S, Theiler A, Bärnthaler T, Trakaki A, Trieb M, Holzer M, Heinemann A, Zimmermann R, Sturm EM, Marsche G. Lysophosphatidylcholines inhibit human eosinophil activation and suppress eosinophil migration in vivo. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158686. [PMID: 32171907 DOI: 10.1016/j.bbalip.2020.158686] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 02/08/2023]
Abstract
Eosinophils are important multifaceted effector cells involved in allergic inflammation. Following allergen challenge, eosinophils and other immune cells release secreted phospholipases, generating lysophosphatidylcholines (LPCs). LPCs are potent lipid mediators, and serum levels of LPCs associate with asthma severity, suggesting a regulatory activity of LPCs in asthma development. As of yet, the direct effects of LPCs on eosinophils remain unclear. In the present study, we tested the effects of the major LPC species (16:0, 18:0 and 18:1) on eosinophils isolated from healthy human donors. Addition of saturated LPCs in the presence of albumin rapidly disrupted cholesterol-rich nanodomains on eosinophil cell membranes and suppressed multiple eosinophil effector responses, such as CD11b upregulation, degranulation, chemotaxis, and downstream signaling. Furthermore, we demonstrate in a mouse model of allergic cell recruitment, that LPC treatment markedly reduces immune cell infiltration into the lungs. Our observations suggest a strong modulatory activity of LPCs in the regulation of eosinophilic inflammation in vitro and in vivo.
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Affiliation(s)
- Eva Knuplez
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Sanja Curcic
- Division of Biophysics, Gottfried-Schatz-Research-Center, Medical University of Graz, Neue Stiftingtalstrasse 6/D04, 8010 Graz, Austria
| | - Anna Theiler
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Thomas Bärnthaler
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Athina Trakaki
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Markus Trieb
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; BioTechMed-Graz, Graz, Austria
| | - Michael Holzer
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; BioTechMed-Graz, Graz, Austria
| | - Akos Heinemann
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; BioTechMed-Graz, Graz, Austria
| | - Robert Zimmermann
- BioTechMed-Graz, Graz, Austria; Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Eva M Sturm
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Gunther Marsche
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; BioTechMed-Graz, Graz, Austria.
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Relationship Between the Gastrointestinal Side Effects of an Anti-Hypertensive Medication and Changes in the Serum Lipid Metabolome. Nutrients 2020; 12:nu12010205. [PMID: 31941114 PMCID: PMC7019348 DOI: 10.3390/nu12010205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/22/2019] [Accepted: 01/06/2020] [Indexed: 01/14/2023] Open
Abstract
An earlier study using a rat model system indicated that the active ingredients contained in the anti-hypertensive medication amlodipine (AMD) appeared to induce various bowel problems, including constipation and inflammation. A probiotic blend was found to alleviate intestinal complications caused by the medicine. To gain more extensive insight into the beneficial effects of the probiotic blend, we investigated the changes in metabolite levels using a non-targeted metabolic approach with ultra-performance liquid chromatography-quadrupole/time-of-fligh (UPLC-q/TOF) mass spectrometry. Analysis of lipid metabolites revealed that rats that received AMD had a different metabolome profile compared with control rats and rats that received AMD plus the probiotic blend. In the AMD-administered group, serum levels of phosphatidylcholines, lysophosphatidylcholines, sphingomyelins, triglycerides with large numbers of double bonds, cholesterols, sterol derivatives, and cholesterol esters (all p < 0.05) were increased compared with those of the control group and the group that received AMD plus the probiotic blend. The AMD-administered group also exhibited significantly decreased levels of triglycerides with small numbers of double bonds (all p < 0.05). These results support our hypothesis that AMD-induced compositional changes in the gut microbiota are a causal factor in inflammation.
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28
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Li HM, Jang JH, Jung JS, Shin J, Park CO, Kim YJ, Ahn WG, Nam JS, Hong CW, Lee J, Jung YJ, Chen JF, Ravid K, Lee HT, Huh WK, Kabarowski JH, Song DK. G2A Protects Mice against Sepsis by Modulating Kupffer Cell Activation: Cooperativity with Adenosine Receptor 2b. THE JOURNAL OF IMMUNOLOGY 2018; 202:527-538. [PMID: 30530591 DOI: 10.4049/jimmunol.1700783] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 11/04/2018] [Indexed: 01/01/2023]
Abstract
G2A is a GPCR abundantly expressed in immune cells. G2A-/- mice showed higher lethality, higher plasma cytokines, and an impaired bacterial clearance in response to a murine model of sepsis (cecal ligation and puncture), which were blocked by GdCl3, an inhibitor of Kupffer cells. Anti-IL-10 Ab reversed the impaired bacterial clearance in G2A-/- mice. Indomethacin effectively blocked both the increased i.p. IL-10 levels and the impaired bacterial clearance, indicating that disturbed PG system is the proximal cause of these phenomena. Stimulation with LPS/C5a induced an increase in Escherichia coli phagocytosis and intracellular cAMP levels in G2A+/+ peritoneal macrophages but not G2A-/- cells, which showed more PGE2/nitrite release and intracellular reactive oxygen species levels. Heterologous coexpression of G2A and adenosine receptor type 2b (A2bAR) induced a synergistic increase in cAMP signaling in a ligand-independent manner, with the evidence of physical interaction of G2A with A2bAR. BAY 60-6583, a specific agonist for A2bAR, increased intracellular cAMP levels in Kupffer cells from G2A+/+ but not from G2A-/- mice. Both G2A and A2bAR were required for antiseptic action of lysophosphatidylcholine. These results show inappropriate activation of G2A-/- Kupffer cells to septic insults due to an impaired cAMP signaling possibly by lack of interaction with A2bAR.
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Affiliation(s)
- Hong-Mei Li
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Ji Hye Jang
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Jun-Sub Jung
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Jiseon Shin
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Chul O Park
- Department of Biological Sciences, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Yeon-Ja Kim
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Won-Gyun Ahn
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Ju-Suk Nam
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Chang-Won Hong
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Jongho Lee
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Yu-Jin Jung
- Department of Biological Sciences, Kangwon National University, Chuncheon, Gangwon-do 24341, Republic of Korea
| | - Jiang-Fan Chen
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118
| | - Katya Ravid
- Departments of Medicine and Biochemistry, Boston University School of Medicine, Boston, MA 02118
| | - H Thomas Lee
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY 10032; and
| | - Won-Ki Huh
- Department of Biological Sciences, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Janusz H Kabarowski
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Dong-Keun Song
- Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea;
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Kern K, Schäfer SMG, Cohnen J, Pierre S, Osthues T, Tarighi N, Hohmann S, Ferreiros N, Brüne B, Weigert A, Geisslinger G, Sisignano M, Scholich K. The G2A Receptor Controls Polarization of Macrophage by Determining Their Localization Within the Inflamed Tissue. Front Immunol 2018; 9:2261. [PMID: 30327654 PMCID: PMC6174245 DOI: 10.3389/fimmu.2018.02261] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/11/2018] [Indexed: 12/17/2022] Open
Abstract
Macrophages are highly versatile cells, which acquire, depending on their microenvironment, pro- (M1-like), or antiinflammatory (M2-like) phenotypes. Here, we studied the role of the G-protein coupled receptor G2A (GPR132), in chemotactic migration and polarization of macrophages, using the zymosan-model of acute inflammation. G2A-deficient mice showed a reduced zymosan-induced thermal hyperalgesia, which was reversed after macrophage depletion. Fittingly, the number of M1-like macrophages was reduced in the inflamed tissue in G2A-deficient mice. However, G2A activation was not sufficient to promote M1-polarization in bone marrow-derived macrophages. While the number of monocyte-derived macrophages in the inflamed paw was not altered, G2A-deficient mice had less macrophages in the direct vicinity of the origin of inflammation, an area marked by the presence of zymosan, neutrophil accumulation and proinflammatory cytokines. Fittingly neutrophil efferocytosis was decreased in G2A-deficient mice and several lipids, which are released by neutrophils and promote G2A-mediated chemotaxis, were increased in the inflamed tissue. Taken together, G2A is necessary to position macrophages in the proinflammatory microenvironment surrounding the center of inflammation. In absence of G2A the macrophages are localized in an antiinflammatory microenvironment and macrophage polarization is shifted toward M2-like macrophages.
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Affiliation(s)
- Katharina Kern
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Stephan M G Schäfer
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Jennifer Cohnen
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Sandra Pierre
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Tabea Osthues
- Project Group Translational Medicine and Pharmacology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt, Germany
| | - Neda Tarighi
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Stefan Hohmann
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Nerea Ferreiros
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Project Group Translational Medicine and Pharmacology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt, Germany.,Faculty of Medicine, Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Andreas Weigert
- Faculty of Medicine, Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany.,Project Group Translational Medicine and Pharmacology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt, Germany
| | - Marco Sisignano
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany
| | - Klaus Scholich
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Frankfurt, Germany.,Project Group Translational Medicine and Pharmacology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt, Germany
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30
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Drzazga A, Kristinsson H, Sałaga M, Zatorski H, Koziołkiewicz M, Gendaszewska-Darmach E, Bergsten P. Lysophosphatidylcholine and its phosphorothioate analogues potentiate insulin secretion via GPR40 (FFAR1), GPR55 and GPR119 receptors in a different manner. Mol Cell Endocrinol 2018; 472:117-125. [PMID: 29225068 DOI: 10.1016/j.mce.2017.12.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/08/2017] [Accepted: 12/07/2017] [Indexed: 12/29/2022]
Abstract
Lysophosphatidylcholine (LPC) is an endogenous ligand for GPR119 receptor, mediating glucose-stimulated insulin secretion (GSIS). We demonstrate that LPC facilitates GSIS in MIN6 pancreatic β-cell line and murine islets of Langerhans by recognizing not only GPR119 but also GPR40 (free fatty acid receptor 1) and GPR55 activated by lysophosphatidylinositol. Natural LPCs are unstable when administered in vivo limiting their therapeutic value and therefore, we present phosphorothioate LPC analogues with increased stability. All the modified LPCs under study (12:0, 14:0, 16:0, 18:0, and 18:1) significantly enhanced GSIS. The 16:0 sulfur analogue was the most potent, evoking 2-fold accentuated GSIS compared to the native counterpart. Interestingly, LPC analogues evoked GPR40-, GPR55-and GPR119-dependent [Ca2+]i signaling, but did not stimulate cAMP accumulation as in the case of unmodified molecules. Thus, introduction of a phosphorothioate function not only increases LPC stability but also modulates affinity towards receptor targets and evokes different signaling pathways.
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Affiliation(s)
- Anna Drzazga
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, B. Stefanowskiego 4/10, 90-924 Lodz, Poland
| | - Hjalti Kristinsson
- Department of Medical Cell Biology, Uppsala University, Husargatan 3, 75123 Uppsala, Sweden
| | - Maciej Sałaga
- Department of Biochemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Hubert Zatorski
- Department of Biochemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Maria Koziołkiewicz
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, B. Stefanowskiego 4/10, 90-924 Lodz, Poland
| | - Edyta Gendaszewska-Darmach
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, B. Stefanowskiego 4/10, 90-924 Lodz, Poland.
| | - Peter Bergsten
- Department of Medical Cell Biology, Uppsala University, Husargatan 3, 75123 Uppsala, Sweden
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31
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Wang HY, Wang Y, Zhang Y, Wang J, Xiong SY, Sun Q. Crosslink between lipids and acute uveitis: a lipidomic analysis. Int J Ophthalmol 2018; 11:736-746. [PMID: 29862170 DOI: 10.18240/ijo.2018.05.05] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 03/15/2018] [Indexed: 01/19/2023] Open
Abstract
AIM To explore the roles of phospholipids and sphingolipids in the inflammatory process of uveitis. METHODS Aqueous humor (AH) and the retina were obtained from endotoxin-induced uveitis (EIU) rats during the acute inflammation stage (24h after endotoxin injection). Lipids were extracted using a modified Bligh and Dyer method and subjected to mass spectrometric identification using class-specific lipid standards and ratiometric quantification. Relative intensity analysis was performed to evaluate the amount change of common lipids between the EIU and control groups. RESULTS Unique lipid species encompassing all five phospholipid classes were found in both control and the EIU AH and retina. Commensurate with the significantly increased level of lysophospholipids in the EIU AH and retina, we found that the ratio of lysophospholipids to total phospholipids was significantly increased too. We also detected a significant increase in 18:0 lysophosphatidylcholine levels in the EIU group (fold change =6.4 in AH and 3.8 in retina). Cer240, Cer241, and SM240 levels remarkably increased in the EIU AH. Enhanced C12 ceramide-1-phosphate (C12 C-1-P), C16 C-1-P, C24 C-1-P, and upregulated Cer160, Cer240, SM120, and SM240 were found in EIU retina. C-1-P was believed to restore homeostasis by inhibiting nuclear factor kappa B (NF-κB) activation. However, we still found elevated NF-κB levels in the EIU retina. CONCLUSION A variety of lipids might have played a critical role in EIU inflammation. Exogenous topical application of these protective lipids or inhibition of these pro-inflammatory lipids may be useful therapeutic strategies for the resolution of EIU.
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Affiliation(s)
- Hai-Yan Wang
- Department of Ophthalmology, Shanghai First People's Hospital Affiliated to Jiaotong University, Shanghai 200080, China.,Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai 200080, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
| | - Yi Wang
- Department of Chemistry, Fudan University, Shanghai 200030, China.,Department of Institutes of Biomedical Sciences, Fudan University, Shanghai 200030, China
| | - Yuan Zhang
- Department of Ophthalmology, Shanghai First People's Hospital Affiliated to Jiaotong University, Shanghai 200080, China.,Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai 200080, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
| | - Jing Wang
- Department of Ophthalmology, Shanghai First People's Hospital Affiliated to Jiaotong University, Shanghai 200080, China.,Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai 200080, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
| | - Shu-Yu Xiong
- Department of Ophthalmology, Shanghai First People's Hospital Affiliated to Jiaotong University, Shanghai 200080, China.,Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai 200080, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
| | - Qian Sun
- Department of Ophthalmology, Shanghai First People's Hospital Affiliated to Jiaotong University, Shanghai 200080, China.,Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai 200080, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
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32
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Lee HJ, Ko HJ, Song DK, Jung YJ. Lysophosphatidylcholine Promotes Phagosome Maturation and Regulates Inflammatory Mediator Production Through the Protein Kinase A-Phosphatidylinositol 3 Kinase-p38 Mitogen-Activated Protein Kinase Signaling Pathway During Mycobacterium tuberculosis Infection in Mouse Macrophages. Front Immunol 2018; 9:920. [PMID: 29755479 PMCID: PMC5934435 DOI: 10.3389/fimmu.2018.00920] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/13/2018] [Indexed: 11/13/2022] Open
Abstract
Tuberculosis is caused by the infectious agent Mycobacterium tuberculosis (Mtb). Mtb has various survival strategies, including blockade of phagosome maturation and inhibition of antigen presentation. Lysophosphatidylcholine (LPC) is a major phospholipid component of oxidized low-density lipoprotein and is involved in various cellular responses, such as activation of second messengers and bactericidal activity in neutrophils. In this study, macrophages were infected with a low infectious dose of Mtb and treated with LPC to investigate the bactericidal activity of LPC against Mtb. In macrophages infected with Mtb strain, H37Ra or H37Rv, LPC suppressed bacterial growth; however, this effect was suppressed in bone marrow-derived macrophages (BMDMs) isolated from G2A (a G protein-coupled receptor involved in some LPC actions) knockout mice. LPC also promoted phagosome maturation via phosphatidylinositol 3 kinase (PI3K)–p38 mitogen-activated protein kinase (MAPK)-mediated reactive oxygen species production and intracellular Ca2+ release during Mtb infection. In addition, LPC induced increased levels of intracellular cyclic adenosine monophosphate (cAMP) and phosphorylated glycogen synthase kinase 3 beta (GSK3β) in Mtb-infected macrophages. Protein kinase A (PKA)-induced phosphorylation of GSK3β suppressed activation of NF-κB in LPC-treated macrophages during Mtb infection, leading to decreased secretion of pro-inflammatory cytokines and increased secretion of anti-inflammatory cytokines. These results suggest that LPC can effectively control Mtb growth by promoting phagosome maturation via cAMP-induced activation of the PKA–PI3K–p38 MAPK pathway. Moreover, LPC can regulate excessive production of pro-inflammatory cytokines associated with bacterial infection of macrophages.
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Affiliation(s)
- Hyo-Ji Lee
- Department of Biological Sciences, Kangwon National University, Chuncheon, South Korea.,Institute of Life Sciences, Kangwon National University, Chuncheon, South Korea
| | - Hyun-Jeong Ko
- College of Pharmacy, Kangwon National University, Chuncheon, South Korea
| | - Dong-Kun Song
- Department of Pharmacology, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Yu-Jin Jung
- Department of Biological Sciences, Kangwon National University, Chuncheon, South Korea
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33
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Sagini K, Costanzi E, Emiliani C, Buratta S, Urbanelli L. Extracellular Vesicles as Conveyors of Membrane-Derived Bioactive Lipids in Immune System. Int J Mol Sci 2018; 19:ijms19041227. [PMID: 29670015 PMCID: PMC5979532 DOI: 10.3390/ijms19041227] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/06/2018] [Accepted: 04/14/2018] [Indexed: 12/11/2022] Open
Abstract
Over the last 20 years, extracellular vesicles (EVs) have been established as an additional way to transmit signals outside the cell. They are membrane-surrounded structures of nanometric size that can either originate from the membrane invagination of multivesicular bodies of the late endosomal compartment (exosomes) or bud from the plasma membrane (microvesicles). They contain proteins, lipids, and nucleic acids—namely miRNA, but also mRNA and lncRNA—which are derived from the parental cell, and have been retrieved in every fluid of the body. As carriers of antigens, either alone or in association with major histocompatibility complex (MHC) class II and class I molecules, their immunomodulatory properties have been extensively investigated. Moreover, recent studies have shown that EVs may carry and deliver membrane-derived bioactive lipids that play an important function in the immune system and related pathologies, such as prostaglandins, leukotrienes, specialized pro-resolving mediators, and lysophospholipids. EVs protect bioactive lipids from degradation and play a role in the transcellular synthesis of prostaglandins and leukotrienes. Here, we summarized the role of EVs in the regulation of immune response, specifically focusing our attention on the emerging role of EVs as carriers of bioactive lipids, which is important for immune system function.
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Affiliation(s)
- Krizia Sagini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Eva Costanzi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Carla Emiliani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Sandra Buratta
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Lorena Urbanelli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
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34
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2- OMe -lysophosphatidylcholine analogues are GPR119 ligands and activate insulin secretion from βTC-3 pancreatic cells: Evaluation of structure-dependent biological activity. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:91-103. [DOI: 10.1016/j.bbalip.2017.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 10/19/2017] [Accepted: 10/22/2017] [Indexed: 01/08/2023]
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35
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Lysophosphatidylserine suppresses IL-2 production in CD4 T cells through LPS3/GPR174. Biochem Biophys Res Commun 2017; 494:332-338. [DOI: 10.1016/j.bbrc.2017.10.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/05/2017] [Indexed: 01/08/2023]
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36
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Drzazga A, Sowinska A, Krzeminska A, Rytczak P, Koziolkiewicz M, Gendaszewska-Darmach E. Lysophosphatidylcholine elicits intracellular calcium signaling in a GPR55-dependent manner. Biochem Biophys Res Commun 2017; 489:242-247. [PMID: 28552522 DOI: 10.1016/j.bbrc.2017.05.145] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 05/24/2017] [Indexed: 01/28/2023]
Abstract
The GPR55 signaling is fertile ground for drug discovery, however despite considerable research progress during the past 10 years, many open questions remain. The GPR55 pharmacology remains controversial, as many ligands have been reported with inconsistent results. Here, we show that various molecular species of lysophosphatidylcholine (LPC) elicit intracellular Ca2+ mobilization in GPR55-expressing PC-3 human prostate carcinoma cells. The response was even stronger than [Ca2+]i flux evoked by endogenous (OEA) and synthetic (Abn-CBD) agonists. Treatment with GPR55 antagonists CID16020046 and ML193 as well as the lipid raft disrupter methyl-β-cyclodextrin strongly blunted LPC-induced calcium signal. Additionally, molecular modeling analysis revealed that LPC 16:0 and LPC 18:1 interact stronger with the receptor than to OEA. Identified electrostatic interactions between GPR55 residues and the ligands overlap with the binding site identified previously for lysophosphatidylinositol. Therefore, we prove that LPC is another GPR55-sensitive ligand. This finding is relevant in understanding lysophospolipids-mediated signaling and opens new avenues to develop therapeutic approach based on GPR55 targeting.
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Affiliation(s)
- Anna Drzazga
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
| | - Agata Sowinska
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland
| | - Agnieszka Krzeminska
- Institute of Applied Radiation Chemistry, Lodz University of Technology, Wroblewskiego 15, 93-590 Lodz, Poland
| | - Przemysław Rytczak
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland
| | - Maria Koziolkiewicz
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland
| | - Edyta Gendaszewska-Darmach
- Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
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37
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Frasch SC, McNamee EN, Kominsky D, Jedlicka P, Jakubzick C, Zemski Berry K, Mack M, Furuta GT, Lee JJ, Henson PM, Colgan SP, Bratton DL. G2A Signaling Dampens Colitic Inflammation via Production of IFN-γ. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2016; 197:1425-34. [PMID: 27402702 PMCID: PMC4975950 DOI: 10.4049/jimmunol.1600264] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/06/2016] [Indexed: 12/19/2022]
Abstract
Proinflammatory consequences have been described for lysophosphatidylcholine, a lipid product of cellular injury, signaling via the G protein-coupled receptor G2A on myeloid and lymphoid inflammatory cells. This prompted the hypothesis that genetic deletion of G2A would limit intestinal inflammation in a mouse model of colitis induced by dextran sodium sulfate. Surprisingly, G2A(-/-) mice exhibited significantly worsened colitis compared with wild-type mice, as demonstrated by disease activity, colon shortening, histology, and elevated IL-6 and IL-5 in colon tissues. Investigation of inflammatory cells recruited to inflamed G2A(-/-) colons showed significantly more TNF-α(+) and Ly6C(hi)MHCII(-) proinflammatory monocytes and eosinophils than in wild-type colons. Both monocytes and eosinophils were pathogenic as their depletion abolished the excess inflammation in G2A(-/-) mice. G2A(-/-) mice also had less IFN-γ in inflamed colon tissues than wild-type mice. Fewer CD4(+) lymphocytes were recruited to inflamed G2A(-/-) colons, and fewer colonic lymphocytes produced IFN-γ upon ex vivo stimulation. Administration of IFN-γ to G2A(-/-) mice during dextran sodium sulfate exposure abolished the excess colitic inflammation and reduced colonic IL-5 and eosinophil numbers to levels seen in wild-type mice. Furthermore, IFN-γ reduced the numbers of TNF-α(+) monocyte and enhanced their maturation from Ly6C(hi)MHCII(-) to Ly6C(int)MHCII(+) Taken together, the data suggest that G2A signaling serves to dampen intestinal inflammation via the production of IFN-γ, which, in turn, enhances monocyte maturation to a less inflammatory program and ultimately reduces eosinophil-induced injury of colonic tissues.
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Affiliation(s)
| | - Eóin N McNamee
- Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Douglas Kominsky
- Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Paul Jedlicka
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Claudia Jakubzick
- Department of Pediatrics, National Jewish Health, Denver, CO 80206; Department of Immunology and Microbiology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80206
| | - Karin Zemski Berry
- Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045
| | - Matthias Mack
- Department of Internal Medicine, University of Regensburg, 93042 Regensburg, Germany
| | - Glenn T Furuta
- Digestive Health Institute, Children's Hospital Colorado, Aurora, CO 80045; Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045; and
| | - James J Lee
- Division of Pulmonary Medicine, Department of Biochemistry and Molecular Biology, Mayo Clinic in Arizona, Scottsdale, AZ 85259
| | - Peter M Henson
- Department of Pediatrics, National Jewish Health, Denver, CO 80206
| | - Sean P Colgan
- Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Donna L Bratton
- Department of Pediatrics, National Jewish Health, Denver, CO 80206
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38
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The chemical synthesis and preliminary biological studies of phosphodiester and phosphorothioate analogues of 2-methoxy-lysophosphatidylethanolamine. Bioorg Med Chem Lett 2016; 26:3725-9. [PMID: 27268697 DOI: 10.1016/j.bmcl.2016.05.075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 11/22/2022]
Abstract
The chemical synthesis of phosphorothioate/phosphodiester analogues of 2-methoxy-lysophosphatidylethanolamine has been described. For the preparation of phosphorothioate derivatives oxathiaphospholane approach has been employed. The phosphodiester compounds were prepared by OXONE® oxidation of corresponding phosphorothioates. Each lysophospholipid analogue was synthesized as a series of four compounds, bearing different fatty acid residues both saturated (14:0, 16:0, 18:0) and unsaturated (18:1). The methylation of glycerol 2-hydroxyl function was applied in order to increase the stability of prepared analogues by preventing 1→2 acyl migration. The cytotoxicity of newly synthesized 2-methoxy-lysophosphatidylethanolamine derivatives was evaluated with resazurin-based method in prostate cancer PC3 cell line. The highest reduction of cell viability was noted for LPE analogues containing myristoyl acyl chain.
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39
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Nagura Y, Tsuno NH, Kano K, Inoue A, Aoki J, Hirowatari Y, Kaneko M, Kurano M, Matsuhashi M, Ohkawa R, Tozuka M, Yatomi Y, Okazaki H. Regulation of the lysophosphatidylserine and sphingosine 1-phosphate levels in autologous whole blood by the pre-storage leukocyte reduction. Transfus Med 2016; 26:365-372. [DOI: 10.1111/tme.12326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 05/14/2016] [Accepted: 05/24/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Nagura
- Department of Transfusion Medicine; The University of Tokyo Hospital; Tokyo Japan
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - N. H. Tsuno
- Department of Transfusion Medicine; The University of Tokyo Hospital; Tokyo Japan
| | - K. Kano
- Graduate School of Pharmaceutical Sciences; Tohoku University; Miyagi Japan
| | - A. Inoue
- Graduate School of Pharmaceutical Sciences; Tohoku University; Miyagi Japan
| | - J. Aoki
- Graduate School of Pharmaceutical Sciences; Tohoku University; Miyagi Japan
| | - Y. Hirowatari
- Laboratory Sciences, Department of Health Sciences; Saitama Prefectural University; Saitama Japan
| | - M. Kaneko
- Department of Clinical Laboratory; The University of Tokyo Hospital; Tokyo Japan
| | - M. Kurano
- Department of Clinical Laboratory; The University of Tokyo Hospital; Tokyo Japan
| | - M. Matsuhashi
- Department of Transfusion Medicine; The University of Tokyo Hospital; Tokyo Japan
- Laboratory Sciences, Department of Health Sciences; Saitama Prefectural University; Saitama Japan
| | - R. Ohkawa
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - M. Tozuka
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - Y. Yatomi
- Department of Clinical Laboratory; The University of Tokyo Hospital; Tokyo Japan
| | - H. Okazaki
- Department of Transfusion Medicine; The University of Tokyo Hospital; Tokyo Japan
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40
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Jung S, Inoue A, Nakamura S, Kishi T, Uwamizu A, Sayama M, Ikubo M, Otani Y, Kano K, Makide K, Aoki J, Ohwada T. Conformational Constraint of the Glycerol Moiety of Lysophosphatidylserine Affords Compounds with Receptor Subtype Selectivity. J Med Chem 2016; 59:3750-76. [PMID: 27077565 DOI: 10.1021/acs.jmedchem.5b01925] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lysophosphatidylserine (LysoPS) is an endogenous lipid mediator that specifically activates membrane proteins of the P2Y and its related families of G protein-coupled receptors (GPCR), GPR34 (LPS1), P2Y10 (LPS2), and GPR174 (LPS3). Here, in order to increase potency and receptor selectivity, we designed and synthesized LysoPS analogues containing the conformational constraints of the glycerol moiety. These reduced structural flexibility by fixation of the glycerol framework of LysoPS using a 2-hydroxymethyl-3-hydroxytetrahydropyran skeleton, and related structures identified compounds which exhibited high potency and selectivity for activation of GPR34 or P2Y10. Morphing of the structural shape of the 2-hydroxymethyl-3-hydroxytetrahydropyran skeleton into a planar benzene ring enhanced the P2Y10 activation potentcy rather than the GPR34 activation.
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Affiliation(s)
- Sejin Jung
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Research Foundation ITSUU Laboratory , C1232 Kanagawa Science Park R & D Building, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Asuka Inoue
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.,PRESTO, Japan Science and Technology Agency (JST) , 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012, Japan
| | - Sho Nakamura
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takayuki Kishi
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Akiharu Uwamizu
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Misa Sayama
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masaya Ikubo
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuko Otani
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kuniyuki Kano
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kumiko Makide
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.,PRESTO, Japan Science and Technology Agency (JST) , 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012, Japan
| | - Junken Aoki
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.,AMED-CREST, Japan Agency for Medical Research and Development , 1-7-1 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
| | - Tomohiko Ohwada
- Laboratory of Organic and Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Abstract
OBJECTIVE The total burden of subclinical coronary atherosclerosis is significant in young adults. Serum lipoprotein-associated phospholipase A2 (Lp-PLA2) is an established predictor of morbidity and mortality because of cardiovascular disease. The aim of the present investigation was to evaluate the relationship between subclinical coronary atherosclerosis and serum Lp-PLA2 concentrations in a population of young adults. PATIENTS AND METHODS A total of 261 individuals younger than 45 years of age who had undergone coronary computed tomography angiography were evaluated. The study group included 101 patients in whom coronary computed tomography angiography detected subclinical coronary atherosclerosis; the control group included 160 sex-matched and age-matched healthy control patients. RESULTS Serum Lp-PLA2 levels were increased significantly in the study group patients compared with the control patients (15.42±11.88 vs. 8.06±4.32 ng/ml, P<0.001). Furthermore, a positive correlation was identified between the Lp-PLA2 levels and the total number of plaques and diseased arteries (r=0.495, P<0.001, and r=0.621, P<0.001, respectively). The presence of mixed plaque composition was also correlated with the Lp-PLA2 levels (r=0.657, P<0.001). Multivariate regression analysis identified four independently significant predictors of subclinical coronary atherosclerosis: high-sensitivity C-reactive protein levels, tobacco use, uric acid levels, and serum Lp-PLA2 levels. CONCLUSION The presence of subclinical coronary atherosclerosis is associated independently with Lp-PLA2, and it has potential utility as a novel indicator of cardiovascular disease risk in the young adult population.
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Functional metagenomic discovery of bacterial effectors in the human microbiome and isolation of commendamide, a GPCR G2A/132 agonist. Proc Natl Acad Sci U S A 2015; 112:E4825-34. [PMID: 26283367 DOI: 10.1073/pnas.1508737112] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The trillions of bacteria that make up the human microbiome are believed to encode functions that are important to human health; however, little is known about the specific effectors that commensal bacteria use to interact with the human host. Functional metagenomics provides a systematic means of surveying commensal DNA for genes that encode effector functions. Here, we examine 3,000 Mb of metagenomic DNA cloned from three phenotypically distinct patients for effectors that activate NF-κB, a transcription factor known to play a central role in mediating responses to environmental stimuli. This screen led to the identification of 26 unique commensal bacteria effector genes (Cbegs) that are predicted to encode proteins with diverse catabolic, anabolic, and ligand-binding functions and most frequently interact with either glycans or lipids. Detailed analysis of one effector gene family (Cbeg12) recovered from all three patient libraries found that it encodes for the production of N-acyl-3-hydroxypalmitoyl-glycine (commendamide). This metabolite was also found in culture broth from the commensal bacterium Bacteroides vulgatus, which harbors a gene highly similar to Cbeg12. Commendamide resembles long-chain N-acyl-amides that function as mammalian signaling molecules through activation of G-protein-coupled receptors (GPCRs), which led us to the observation that commendamide activates the GPCR G2A/GPR132. G2A has been implicated in disease models of autoimmunity and atherosclerosis. This study shows the utility of functional metagenomics for identifying potential mechanisms used by commensal bacteria for host interactions and outlines a functional metagenomics-based pipeline for the systematic identification of diverse commensal bacteria effectors that impact host cellular functions.
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Rubio JM, Rodríguez JP, Gil-de-Gómez L, Guijas C, Balboa MA, Balsinde J. Group V secreted phospholipase A2 is upregulated by IL-4 in human macrophages and mediates phagocytosis via hydrolysis of ethanolamine phospholipids. THE JOURNAL OF IMMUNOLOGY 2015; 194:3327-39. [PMID: 25725101 DOI: 10.4049/jimmunol.1401026] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Studies on the heterogeneity and plasticity of macrophage populations led to the identification of two major polarization states: classically activated macrophages or M1, induced by IFN-γ plus LPS, and alternatively activated macrophages, induced by IL-4. We studied the expression of multiple phospholipase A2 enzymes in human macrophages and the effect that polarization of the cells has on their levels. At least 11 phospholipase A2 genes were found at significant levels in human macrophages, as detected by quantitative PCR. None of these exhibited marked changes after treating the cells with IFN-γ plus LPS. However, macrophage treatment with IL-4 led to strong upregulation of the secreted group V phospholipase A2 (sPLA2-V), both at the mRNA and protein levels. In parallel with increasing sPLA2-V expression levels, IL-4-treated macrophages exhibited increased phagocytosis of yeast-derived zymosan and bacteria, and we show that both events are causally related, because cells deficient in sPLA2-V exhibited decreased phagocytosis, and cells overexpressing the enzyme manifested higher rates of phagocytosis. Mass spectrometry analyses of lipid changes in the IL-4-treated macrophages suggest that ethanolamine lysophospholipid (LPE) is an sPLA2-V-derived product that may be involved in regulating phagocytosis. Cellular levels of LPE are selectively maintained by sPLA2-V. By supplementing sPLA2-V-deficient cells with LPE, phagocytosis of zymosan or bacteria was fully restored in IL-4-treated cells. Collectively, our results show that sPLA2-V is required for efficient phagocytosis by IL-4-treated human macrophages and provide evidence that sPLA2-V-derived LPE is involved in the process.
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Affiliation(s)
- Julio M Rubio
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, 28029 Madrid, Spain; and
| | - Juan P Rodríguez
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain; Laboratorio de Investigación en Proteínas, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, 3400 Corrientes, Argentina
| | - Luis Gil-de-Gómez
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain
| | - Carlos Guijas
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, 28029 Madrid, Spain; and
| | - María A Balboa
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, 28029 Madrid, Spain; and
| | - Jesús Balsinde
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas, Universidad de Valladolid, 47003 Valladolid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, 28029 Madrid, Spain; and
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Zuo B, Li M, Liu Y, Li K, Ma S, Cui M, Qin Y, Zhu H, Pan X, Guo J, Dai Z, Yu W. G-protein coupled receptor 34 activates Erk and phosphatidylinositol 3-kinase/Akt pathways and functions as alternative pathway to mediate p185Bcr-Abl-induced transformation and leukemogenesis. Leuk Lymphoma 2014; 56:2170-81. [PMID: 25363403 DOI: 10.3109/10428194.2014.981177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tyrosine 177 and the Src homology 2 (SH2) domain play important roles in linking p185Bcr-Abl to downstream pathways critical for cell growth and survival. However, a mutant p185(Y177FR552L) (p185(YR)), in which tyrosine 177 and arginine 552 in the SH2 domain are mutated, is still capable of transforming hematopoietic cells in vitro. Transplant of these cells into syngeneic mice also leads to leukemogenesis, albeit with a phenotype distinct from that produced by wild-type p185Bcr-Abl (p185(wt))-transformed cells. Here we show that G-protein coupled receptor 34 (Gpr34) expression is markedly up-regulated in p185(YR)-transformed cells compared to those transformed by p185(wt). Knockdown of Gpr34 in p185(YR) cells is sufficient to suppress growth factor-independent proliferation and survival in vitro and attenuate leukemogenesis in vivo. The Erk and phosphatidylinositol 3-kinase/Akt pathways are activated in p185(YR) cells and the activation is dependent on Gpr34 expression. These studies identify Gpr34 as an alternative pathway that may mediate p185Bcr-Abl-induced transformation and leukemogenesis.
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Affiliation(s)
- Bo Zuo
- Institute of Clinical Molecular Biology, People's Hospital, Peking University , Beijing , People's Republic of China
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Oxidized lipids and lysophosphatidylcholine induce the chemotaxis, up-regulate the expression of CCR9 and CXCR4 and abrogate the release of IL-6 in human monocytes. Toxins (Basel) 2014; 6:2840-56. [PMID: 25251539 PMCID: PMC4179163 DOI: 10.3390/toxins6092840] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/08/2014] [Accepted: 09/15/2014] [Indexed: 12/27/2022] Open
Abstract
Lipids through regulation of chronic inflammation play key roles in the development of various diseases. Here, we report that a mixed population of human primary monocytes migrated towards LPC, as well as oxidized linoleic acid isoforms 9-S-HODE, 9-R-HODE and 13-R-HODE. Incubation with 9-R-HODE, 13-R-HODE and LPC resulted in increased expression of CXCR4, the receptor for SDF-1α/CXCL12, correlated with increased monocyte migration towards SDF-1α/CXCL12. Further, we report increased expression of CCR9, the receptor for TECK/CCL25, after stimulation with these lipids. Upon examining the migratory response towards TECK/CCL25, it was observed that an increase in CCR9 expression upon pre-treatment with 9-S-HODE, 9-R-HODE, 13-R-HODE and LPC resulted in increased migration of monocytes expressing CCR9. Only LPC but not any other lipid examined increased the influx of intracellular Ca2+ in monocytes. Finally, 9-S-HODE, 9-R-HODE, 13-R-HODE, or LPC inhibited the release of IL-6 from monocytes suggesting that these lipids may play important role in controlling inflammatory responses.
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Wi SJ, Seo SY, Cho K, Nam MH, Park KY. Lysophosphatidylcholine enhances susceptibility in signaling pathway against pathogen infection through biphasic production of reactive oxygen species and ethylene in tobacco plants. PHYTOCHEMISTRY 2014; 104:48-59. [PMID: 24837357 DOI: 10.1016/j.phytochem.2014.04.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 03/22/2014] [Accepted: 04/10/2014] [Indexed: 05/28/2023]
Abstract
It was previously reported that the amounts of lysophosphatidylcholines (lysoPCs), which are naturally occurring bioactive lipid molecules, significantly increase following pathogen inoculation, as determined using ultraperformance liquid chromatography-quadrupole-time of flight/mass spectrometry analyses. Here, real-time quantitative RT-PCR was performed for the phospholipase A2 (PLA2) genes, Nt1PLA2 and Nt2PLA2, which are responsible for LysoPCs generation. The transcription level of Nt2PLA2 in pathogen-infected tobacco plants transiently peaked at 1h and 36 h, whereas induction of Nt1PLA2 transcription peaked at 36 h. A prominent biphasic ROS accumulation in lysoPC (C18:1(9Z))-treated tobacco leaves was also observed. Transcription of NtRbohD, a gene member of NADPH oxidase, showed biphasic kinetics upon lysoPC 18:1 treatment, as evidenced by an early transient peak in phase I at 1h and a massive peak in phase II at 12h. Each increase in NtACS2 and NtACS4 transcription, gene members of the ACC synthase family, was followed by biphasic peaks of ethylene production after lysoPC 18:1 treatment. This suggested that lysoPC (C18:1)-induced ethylene production was regulated at the transcriptional level of time-dependent gene members. LysoPC 18:1 treatment also rapidly induced cell damage. LysoPC 18:1-induced cell death was almost completely abrogated in ROS generation-impaired transgenic plants (rbohD-as and rbohF-as), ethylene production-impaired transgenic plants (CAS-AS and CAO-AS), and ethylene signaling-impaired transgenic plants (Ein3-AS), respectively. Taken together, pathogen-induced lysoPCs enhance pathogen susceptibility accompanied by ROS and ethylene biosynthesis, resulting in chlorophyll degradation and cell death. Expression of PR genes (PR1-a, PR-3, and PR-4b) and LOX3 was strongly induced in lysoPC 18:1-treated leaves, indicating the involvement of lysoPC 18:1 in the defense response. However, lysoPC 18:1 treatment eventually resulted in cell death, as evidenced by metacaspase gene expression. Therefore, a hypothesis is proposed that the antipathogenic potential of lysoPC 18:1 is dependent on how quickly it is removed from cells for avoidance of lysoPC toxicity.
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Affiliation(s)
- Soo Jin Wi
- Department of Biology, Sunchon National University, Sunchon, Chonnam 540-742, Republic of Korea
| | - So yeon Seo
- Department of Biology, Sunchon National University, Sunchon, Chonnam 540-742, Republic of Korea
| | - Kyoungwon Cho
- Seoul Center, Korea Basic Science Institute (KBSI), Seoul 136-713, Republic of Korea
| | - Myung Hee Nam
- Seoul Center, Korea Basic Science Institute (KBSI), Seoul 136-713, Republic of Korea
| | - Ky Young Park
- Department of Biology, Sunchon National University, Sunchon, Chonnam 540-742, Republic of Korea.
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Ragab SM, Safan MA, Obeid OM, Sherief AS. Lipoprotein-associated phospholipase A2 (Lp-PLA2) and tumor necrosis factor-alpha (TNF-α) and their relation to premature atherosclerosis in β-thalassemia children. ACTA ACUST UNITED AC 2014; 20:228-38. [PMID: 25056687 DOI: 10.1179/1607845414y.0000000180] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND/OBJECTIVES Beta (β)-thalassemia adults are prone to premature atherosclerosis but data about this complication among thalassemia children are few. Lipoprotein-associated phospholipase A2 (Lp-PLA2) and tumor necrosis factor-α (TNF-α) are inflammatory markers that could be implicated in atherosclerotic process. We investigated Lp-PLA2 and TNF-α levels in β-thalassemia children and their relation to subclinical atherosclerosis. METHODS Twenty-two β-thalassemia major (TM), 20 β-thalassemia intermedia children, and 30 age- and sex-matched healthy controls were included. Lipid profile (by colorimetric assay), serum ferritin, TNF-α, and plasma Lp-PLA2 levels (by enzyme-linked immunosorbent assay technique) were estimated. Carotid intima-media thickness (cIMT) was measured by high-resolution ultrasound. RESULTS Both patient groups exhibited anti-atherogenic lipid profile except increased serum triglycerides. They had significantly higher plasma Lp-PLA2 and serum TNF-α compared to the controls (P < 0.001). Elevated cIMT was documented in 57% of the thalassemia children and was higher among hepatitis C (HCV) positive patients. Serum ferritin, TNF-α, and plasma Lp-PLA2 levels were significantly higher in patients with premature atherosclerosis. cIMT correlated significantly with serum ferritin, TNF-α, and plasma Lp-PLA2 in both patient groups. Among TM children, serum ferritin had significant positive correlation with serum TNF-α and plasma Lp-PLA2. The elevation of both markers was not related to HCV infection. CONCLUSIONS Premature atherosclerosis is common among young thalassemia children. Lp-PLA2 and TNF-α are significantly increased in thalassemia children and show strong correlations with cIMT, suggesting that both of them may be appreciated as modulating factors in carotid atherosclerosis pathophysiological process among these children.
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Makide K, Uwamizu A, Shinjo Y, Ishiguro J, Okutani M, Inoue A, Aoki J. Novel lysophosphoplipid receptors: their structure and function. J Lipid Res 2014; 55:1986-95. [PMID: 24891334 DOI: 10.1194/jlr.r046920] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
It is now accepted that lysophospholipids (LysoGPs) have a wide variety of functions as lipid mediators that are exerted through G protein-coupled receptors (GPCRs) specific to each lysophospholipid. While the roles of some LysoGPs, such as lysophosphatidic acid and sphingosine 1-phosphate, have been thoroughly examined, little is known about the roles of several other LysoGPs, such as lysophosphatidylserine (LysoPS), lysophosphatidylthreonine, lysophosphatidylethanolamine, lysophosphatidylinositol (LPI), and lysophosphatidylglycerol. Recently, a GPCR was found for LPI (GPR55) and three GPCRs (GPR34/LPS1, P2Y10/LPS2, and GPR174/LPS3) were found for LysoPS. In this review, we focus on these newly identified GPCRs and summarize the actions of LysoPS and LPI as lipid mediators.
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Affiliation(s)
- Kumiko Makide
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan PRESTO Japan Science and Technology Corporation, Saitama, Japan
| | - Akiharu Uwamizu
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yuji Shinjo
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Jun Ishiguro
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Michiyo Okutani
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Asuka Inoue
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan PRESTO Japan Science and Technology Corporation, Saitama, Japan
| | - Junken Aoki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan CREST, Japan Science and Technology Corporation, Saitama, Japan
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Im DS. Intercellular Lipid Mediators and GPCR Drug Discovery. Biomol Ther (Seoul) 2014; 21:411-22. [PMID: 24404331 PMCID: PMC3879912 DOI: 10.4062/biomolther.2013.080] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 10/30/2013] [Accepted: 11/04/2013] [Indexed: 01/08/2023] Open
Abstract
G-protein-coupled receptors (GPCR) are the largest superfamily of receptors responsible for signaling between cells and tissues, and because they play important physiological roles in homeostasis, they are major drug targets. New technologies have been developed for the identification of new ligands, new GPCR functions, and for drug discovery purposes. In particular, intercellular lipid mediators, such as, lysophosphatidic acid and sphingosine 1-phosphate have attracted much attention for drug discovery and this has resulted in the development of fingolimod (FTY-720) and AM095. The discovery of new intercellular lipid mediators and their GPCRs are discussed from the perspective of drug development. Lipid GPCRs for lysophospholipids, including lysophosphatidylserine, lysophosphatidylinositol, lysophosphatidylcholine, free fatty acids, fatty acid derivatives, and other lipid mediators are reviewed.
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Affiliation(s)
- Dong-Soon Im
- Molecular Inflammation Research Center for Aging Intervention (MRCA) and College of Pharmacy, Pusan National University, Busan 609-735, Republic of Korea
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50
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Frasch SC, Fernandez-Boyanapalli RF, Berry KAZ, Murphy RC, Leslie CC, Nick JA, Henson PM, Bratton DL. Neutrophils regulate tissue Neutrophilia in inflammation via the oxidant-modified lipid lysophosphatidylserine. J Biol Chem 2013; 288:4583-93. [PMID: 23293064 DOI: 10.1074/jbc.m112.438507] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Resolution of neutrophilia characteristic of acute inflammation requires cessation of neutrophil recruitment and removal of tissue neutrophils. Based on in vitro studies, a role in these events was hypothesized for oxidant-generated lysophosphatidylserine (lyso-PS) on recruited neutrophils signaling via the G2A receptor on macrophages. Peritoneal exudate neutrophils harvested from wild type (WT) mice had 5-fold more lyso-PS (lyso-PS(high)) than those of gp91(phox)(-/-) (lyso-PS(low)) mice. Ex vivo engulfment of lyso-PS(high) neutrophils (95% viable) by WT peritoneal macrophages was quantitatively similar to UV-irradiated apoptotic blood neutrophils, although the signaling pathway for the former was uniquely dependent on macrophage G2A. In contrast, lyso-PS(low) neutrophils were poorly engulfed unless presented with exogenous lyso-PS. Enhanced clearance of lyso-PS(high) neutrophils was also seen in vivo following their adoptive transfer into inflamed peritonea of WT but not G2A(-/-) mice, further supporting a requirement for signaling via G2A. To investigate downstream effects of lyso-PS/G2A signaling, antibody blockade of G2A in WT mice reduced macrophage CD206 expression and efferocytosis during peritonitis. Conversely, adoptive transfer of lyso-PS(high) neutrophils early in inflammation in gp91(phox)(-/-) mice led to accelerated development of efferocytic(high) and CD206(high) macrophages. This macrophage reprogramming was associated with suppressed production of pro-inflammatory mediators and reduced neutrophilia. These effects were not seen if G2A was blocked or lyso-PS(low) neutrophils were transferred. Taken together, the results demonstrate that oxidant-generated lyso-PS made by viable tissue neutrophils is an endogenous anti-inflammatory mediator working in vivo to orchestrate the "early" and rapid clearance of recruited neutrophils as well as the reprogramming of "resolving" macrophages.
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Affiliation(s)
- S Courtney Frasch
- Department of Pediatrics, National Jewish Health, Denver, Colorado 80206, USA.
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