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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Luzina, Irina G. Kopach, Pavel Todd, Nevins W. Kang, Phillip H. Atamas, Sergei P. Lockatell, Virginia McKenzie, Andrew N. J. Papadimitriou, John C. Pickering, Edward M. |
| Description | Country affiliation: United States Author Affiliation: Luzina IG ( Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.) |
| Abstract | Expression of IL-33 is elevated in patients with pulmonary diseases, and full-length (not proteolytically processed) IL-33 is the predominant form in the lungs in health and disease. To determine whether activation of IL-33 is needed for functional effects, activities of full-length mouse and mature mouse (mm) forms of IL-33 were compared in vivo. Replication-deficient adenoviral constructs were used for gene delivery. Both isoforms caused pulmonary infiltration of lymphocytes and neutrophils, whereas mm IL-33 also caused pulmonary eosinophilia and goblet cell hyperplasia and increased expression of IL-4, IL-5, IL-13, IL-17, MCP-1, and KC. The different effects were not associated with differential release from IL-33-producing cells or by differences in subcellular distributions of IL-33 isoforms. Germline deficiency of the cell surface receptor chain ST2 abrogated the mm IL-33-induced Th2-associated effects (pulmonary eosinophilia, goblet cell hyperplasia, and increased IL-4 and IL-5), yet the lymphocytic infiltration induced by full-length mouse IL-33 or mm IL-33 was not fully abrogated by the absence of ST2. The similar effects of IL-33 isoforms were associated with comparable regulation of gene expression, notably matrix metalloproteinases 3, 10, and 13. Thus, full-length IL-33 is functionally active in vivo in an ST2-independent fashion, and its effects are partially different from those of mature IL-33. The different effects of these isoforms, particularly the pro-Th2 effects of mature IL-33, are due to differential utilization of the IL-33R chain ST2, whereas their similar effects result from regulation of gene expression. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1200259 |
| Journal | The Journal of Immunology |
| Issue Number | 1 |
| Volume Number | 189 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2012-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Inflammation Mediators Adverse Effects Interleukins Receptors, Cell Surface Physiology Receptors, Interleukin Th2 Cells Immunology Pathology Animals Carcinoma, Non-small-cell Lung Metabolism Cell Line, Tumor Gene Expression Regulation Genetics Hek293 Cells Administration & Dosage Interleukin-33 Biosynthesis Lung Neoplasms Mice Mice, Inbred Balb C Mice, Inbred C57bl Mice, Knockout Protein Biosynthesis Pulmonary Fibrosis Deficiency Stem Cells Comparative Study Research Support, N.i.h., Extramural Research Support, U.s. Gov't, Non-p.h.s. Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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