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Han H, Liang X, Ekberg M, Kritikou JS, Brunnström Å, Pelcman B, Matl M, Miao X, Andersson M, Yuan X, Schain F, Parvin S, Melin E, Sjöberg J, Xu D, Westerberg LS, Björkholm M, Claesson HE. Human 15-lipoxygenase-1 is a regulator of dendritic-cell spreading and podosome formation. FASEB J 2016; 31:491-504. [PMID: 27825104 DOI: 10.1096/fj.201600679rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 10/04/2016] [Indexed: 01/20/2023]
Abstract
Dendritic cells (DCs) involved in proinflammatory immune responses derive mainly from peripheral monocytes, and the cells subsequently mature and migrate into the inflammatory micromilieu. Here we report that suppressing of 15-lipoxygenase-1 led to a substantial reduction in DC spreading and podosome formation in vitro. The surface expression of CD83 was significantly lower in both sh-15-lipoxygenase-1 (15-LOX-1)-transduced cells and DCs cultivated in the presence of a novel specific 15-LOX-1 inhibitor. The T-cell response against tetanus-pulsed DCs was only affected to a minor extent on inhibition of 15-LOX-1. In contrast, endocytosis and migration ability of DCs were significantly suppressed on 15-LOX-1 inhibition. The expression of 15-LOX-1 in DCs was also demonstrated in affected human skin in atopic and contact dermatitis, showing that the enzyme is indeed expressed in inflammatory diseases in vivo. This study demonstrated that inhibiting 15-LOX-1 led to an impaired podosome formation in DCs, and consequently suppressed antigen uptake and migration capacity. These results indicated that 15-LOX-1 is a potential target for inhibiting the trafficking of DCs to lymphoid organs and inflamed tissues and decreasing the inflammatory response attenuating symptoms of certain immunologic and inflammatory disorders such as dermatitis.-Han, H., Liang, X., Ekberg, M., Kritikou, J. S., Brunnström, Å., Pelcman, B., Matl, M., Miao, X., Andersson, M., Yuan, X., Schain, F., Parvin, S., Melin, E., Sjöberg, J., Xu, D., Westerberg, L. S., Björkholm, M., Claesson, H.-E. Human 15-lipoxygenase-1 is a regulator of dendritic-cell spreading and podosome formation.
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Affiliation(s)
- Hongya Han
- Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden; .,Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Xiuming Liang
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Monica Ekberg
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Joanna S Kritikou
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Åsa Brunnström
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Benjamin Pelcman
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, Uppsala University, Uppsala, Sweden
| | - Maria Matl
- Clinical Immunology and Allergy Unit, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Xinyan Miao
- Clinical Pharmacology Group, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden; and
| | - Margareta Andersson
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Xiaotian Yuan
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Frida Schain
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Selina Parvin
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Eva Melin
- Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Jan Sjöberg
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Dawei Xu
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Lisa S Westerberg
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Magnus Björkholm
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Hans-Erik Claesson
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
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Brunnström Å, Tryselius Y, Feltenmark S, Andersson E, Leksell H, James A, Mannervik B, Dahlén B, Claesson HE. On the biosynthesis of 15-HETE and eoxin C4 by human airway epithelial cells. Prostaglandins Other Lipid Mediat 2015; 121:83-90. [PMID: 26026713 DOI: 10.1016/j.prostaglandins.2015.04.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/24/2015] [Accepted: 04/29/2015] [Indexed: 01/18/2023]
Abstract
Several lines of evidence indicate that 15-lipoxygenase type 1 (15-LO-1) plays a pathophysiological role in asthma. The aim for this study was to investigate the 15-LO-1 expression and activity in primary human airway epithelial cells cultivated on micro-porous filters at air-liquid interface. Incubation of human airway epithelial cells with arachidonic acid led to the formation of 15(S)-hydroxy-eicosatetraenoic acid (15-HETE) and exposing the cells to bacteria or physical injury markedly increased their production of 15-HETE. The cells were also found to convert arachidonic acid to eoxin C4 (EXC4). Subcellular fractionation revealed that the conversion of EXA4 to EXC4 was catalyzed by a soluble glutathione transferase (GST). The GST P1-1 enzyme was found to possess the highest activity of the investigated soluble GSTs. Following IL-4 treatment of airway epithelial cells, microarray analysis confirmed high expression of 15-LO-1 and GST P1-1, and immunohistochemical staining of bronchial biopsies revealed co-localization of 15-LO-1 and GST P1-1 in airway epithelial cells. These results indicate that respiratory infection and cell injury may activate the 15-LO pathway in airway epithelial cells. Furthermore, we also demonstrate that airway epithelial cells have the capacity to produce EXC4.
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Affiliation(s)
- Åsa Brunnström
- Department of Medicine, Karolinska University Hospital and Karolinska Institutet, SE-171 76 Stockholm, Sweden
| | | | | | | | - Helene Leksell
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Sweden
| | - Anna James
- Institute of Environmental Medicine, Karolinska Institutet, Sweden; The Centre for Allergy Research, Sweden
| | - Bengt Mannervik
- Department of Neurochemistry, Stockholm University, SE-10691 Stockholm, Sweden
| | - Barbro Dahlén
- The Centre for Allergy Research, Sweden; Department of Medicine, Karolinska University Hospital Huddinge, Sweden
| | - Hans-Erik Claesson
- Department of Medicine, Karolinska University Hospital and Karolinska Institutet, SE-171 76 Stockholm, Sweden.
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Haglund J, Halldin MM, Brunnström Å, Eklund G, Kautiainen A, Sandholm A, Iverson SL. Pragmatic Approaches to Determine the Exposures of Drug Metabolites in Preclinical and Clinical Subjects in the MIST Evaluation of the Clinical Development Phase. Chem Res Toxicol 2014; 27:601-10. [DOI: 10.1021/tx400449z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Johanna Haglund
- AstraZeneca R&D, DMPK Södertälje, SE-151 85 Södertälje, Sweden
| | | | - Åsa Brunnström
- AstraZeneca R&D, DMPK Södertälje, SE-151 85 Södertälje, Sweden
| | - Göran Eklund
- AstraZeneca R&D, DMPK Södertälje, SE-151 85 Södertälje, Sweden
| | | | - Anna Sandholm
- AstraZeneca R&D, DMPK Södertälje, SE-151 85 Södertälje, Sweden
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Brunnström Å, Backman L, Tryselius Y, Claesson HE. Biosynthesis of eoxin C4 by porcine leukocytes. Prostaglandins Leukot Essent Fatty Acids 2012; 87:159-63. [PMID: 22921794 DOI: 10.1016/j.plefa.2012.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 06/11/2012] [Accepted: 07/07/2012] [Indexed: 11/23/2022]
Abstract
Human 15-lipoxygenase-1 (LO) possesses mainly 15-lipoxygenase activity whereas the animal ortholog 12/15-LO possesses mainly 12-lipoxygenase activity. These findings have raised the question if studies on animals can predict the function of 15-LO-1 in human. In this study we have characterized the arachidonic acid metabolites formed by porcine 12/15-LO. Mini pigs were infected with a parasite to increase the number of blood eosinophils, which highly express 12/15-LO. Isolated porcine polymorphonuclear leukocytes (PMNL) were incubated with arachidonic acid and the produced metabolites were analysed with HPLC and mass spectrometry (MS). The cells were found to produce 15-hydroxyeicosatetraenoic acid (HETE) and 12-HETE at a ratio of 1:5. Furthermore 8,15-dihydroxyeicosatetraenoic acids (DiHETEs) and 14,15-DiHETE were formed. Based on HPLC, UV-spectroscopy and MS analysis it was found that porcine PMNL also produced eoxin (EX) C4. These results demonstrate that although porcine 12/15-LO possesses primarily 12-lipoxygenase activity, the enzyme can catalyse the formation of EXC(4).
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Affiliation(s)
- Åsa Brunnström
- Department of Medicine, Karolinska University Hospital and Karolinska Institutet, Solna, SE-171 76 Stockholm, Sweden.
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Liu C, Xu D, Liu L, Schain F, Brunnström Å, Björkholm M, Claesson HE, Sjöberg J. 15-Lipoxygenase-1 induces expression and release of chemokines in cultured human lung epithelial cells. Am J Physiol Lung Cell Mol Physiol 2009; 297:L196-203. [DOI: 10.1152/ajplung.00036.2008] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
15-Lipoxygenase-1 (15-LOX-1) has been proposed to be involved in various physiological and pathophysiological activities such as inflammation, atherosclerosis, cell maturation, and tumorigenesis. Asthma and chronic obstructive pulmonary disease are associated with increased expression of 15-LOX-1 in bronchial epithelial cells, but the potential functions of 15-LOX-1 in airway epithelial cells have not been well clarified. To study the function of 15-LOX-1 in bronchial epithelial cells, we ectopically expressed 15-LOX-1 in the human lung epithelial cell line A549. We found that overexpression of 15-LOX-1 in A549 cells leads to increased release of the chemokines MIP-1α, RANTES, and IP-10, and thereby to increased recruitment of immature dendritic cells, mast cells, and activated T cells. These results suggest that an increased expression and activity of 15-LOX-1 in lung epithelial cells is a proinflammatory event in the pathogenesis of asthma and other inflammatory lung disorders.
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