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Schlager S, Goeritzer M, Jandl K, Frei R, Vujic N, Kolb D, Strohmaier H, Dorow J, Eichmann TO, Rosenberger A, Wölfler A, Lass A, Kershaw EE, Ceglarek U, Dichlberger A, Heinemann A, Kratky D. Adipose triglyceride lipase acts on neutrophil lipid droplets to regulate substrate availability for lipid mediator synthesis. J Leukoc Biol 2015; 98:837-50. [PMID: 26109679 PMCID: PMC4594763 DOI: 10.1189/jlb.3a0515-206r] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 06/09/2015] [Indexed: 01/18/2023] Open
Abstract
Lipid mediator release depends on the hydrolysis of triglyceride-rich lipid droplets mediated by ATGL, a potent regulator of inflammatory diseases. In humans, mutations in ATGL lead to TG accumulation in LDs of most tissues and cells, including peripheral blood leukocytes. This pathologic condition is called Jordans’ anomaly, in which functional consequences have not been investigated. In the present study, we tested the hypothesis that ATGL plays a role in leukocyte LD metabolism and immune cell function. Similar to humans with loss-of-function mutations in ATGL, we found that global and myeloid-specific Atgl−/− mice exhibit Jordans’ anomaly with increased abundance of intracellular TG-rich LDs in neutrophil granulocytes. In a model of inflammatory peritonitis, lipid accumulation was also observed in monocytes and macrophages but not in eosinophils or lymphocytes. Neutrophils from Atgl−/− mice showed enhanced immune responses in vitro, which were more prominent in cells from global compared with myeloid-specific Atgl−/− mice. Mechanistically, ATGL−/− as well as pharmacological inhibition of ATGL led to an impaired release of lipid mediators from neutrophils. These findings demonstrate that the release of lipid mediators is dependent on the liberation of precursor molecules from the TG-rich pool of LDs by ATGL. Our data provide mechanistic insights into Jordans’ anomaly in neutrophils and suggest that ATGL is a potent regulator of immune cell function and inflammatory diseases.
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Affiliation(s)
- Stefanie Schlager
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Madeleine Goeritzer
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Katharina Jandl
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Robert Frei
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Nemanja Vujic
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Dagmar Kolb
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Heimo Strohmaier
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Juliane Dorow
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Thomas O Eichmann
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Angelika Rosenberger
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Albert Wölfler
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Achim Lass
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Erin E Kershaw
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Uta Ceglarek
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Andrea Dichlberger
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Akos Heinemann
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Dagmar Kratky
- Institutes of *Molecular Biology and Biochemistry and Experimental and Clinical Pharmacology, Center for Medical Research, and Division of Hematology, Medical University of Graz, Graz, Austria; Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany; LIFE-Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany; Institute of Molecular Biosciences, University of Graz, Graz, Austria; **Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
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