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Protein synthesis o...
Protein synthesis of the pro-inflammatory S100A8/A9 complex in plasmacytoid dendritic cells and cell surface S100A8/A9 on leukocyte subpopulations in systemic lupus erythematosus
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- Lood, Christian (author)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Stenström, Martin (author)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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- Tydén, Helena (author)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Gullstrand, Birgitta (author)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine
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- Källberg, Eva (author)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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- Leanderson, Tomas (author)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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- Truedsson, Lennart (author)
- Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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- Sturfelt, Gunnar (author)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Ivars, Fredrik (author)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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- Bengtsson, Anders (author)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine
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(creator_code:org_t)
- Springer Science and Business Media LLC, 2011
- 2011
- English.
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In: Arthritis Research and Therapy. - : Springer Science and Business Media LLC. - 1478-6362 .- 1478-6354. ; 13:2
- Related links:
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http://dx.doi.org/10... (free)
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https://arthritis-re...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
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- Introduction: Systemic lupus erythematosus (SLE) is an autoimmune disease with chronic or episodic inflammation in many different organ systems, activation of leukocytes and production of pro-inflammatory cytokines. The heterodimer of the cytosolic calcium-binding proteins S100A8 and S100A9 (S100A8/A9) is secreted by activated polymorphonuclear neutrophils (PMNs) and monocytes and serves as a serum marker for several inflammatory diseases. Furthermore, S100A8 and S100A9 have many pro-inflammatory properties such as binding to Toll-like receptor 4 (TLR4). In this study we investigated if aberrant cell surface S100A8/A9 could be seen in SLE and if plasmacytoid dendritic cells (pDCs) could synthesize S100A8/A9. Methods: Flow cytometry, confocal microscopy and real-time PCR of flow cytometry-sorted cells were used to measure cell surface S100A8/A9, intracellular S100A8/A9 and mRNA levels of S100A8 and S100A9, respectively. Results: Cell surface S100A8/A9 was detected on all leukocyte subpopulations investigated except for T cells. By confocal microscopy, real-time PCR and stimulation assays, we could demonstrate that pDCs, monocytes and PMNs could synthesize S100A8/A9. Furthermore, pDC cell surface S100A8/A9 was higher in patients with active disease as compared to patients with inactive disease. Upon immune complex stimulation, pDCs up-regulated the cell surface S100A8/A9. SLE patients had also increased serum levels of S100A8/A9. Conclusions: Patients with SLE had increased cell surface S100A8/A9, which could be important in amplification and persistence of inflammation. Importantly, pDCs were able to synthesize S100A8/A9 proteins and up-regulate the cell surface expression upon immune complex-stimulation. Thus, S100A8/A9 may be a potent target for treatment of inflammatory diseases such as SLE.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)
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Lood, Christian
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Stenström, Marti ...
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Tydén, Helena
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Gullstrand, Birg ...
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Källberg, Eva
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Leanderson, Toma ...
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Truedsson, Lenna ...
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Sturfelt, Gunnar
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Ivars, Fredrik
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Bengtsson, Ander ...
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Rheumatology and ...
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Arthritis Resear ...
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Lund University