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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jones, Heather D. Crother, Timothy R. Chen, Shuang Shimada, Kenichi Tumurkhuu, Gantsetseg Arditi, Moshe Dagvadorj, Jargalsaikhan |
| Description | Author Affiliation: Tumurkhuu G ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048); Dagvadorj J ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048); Jones HD ( Division of Pulmonary and Critical Care Medicine, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048.); Chen S ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048); Shimada K ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048); Crother TR ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048); Arditi M ( Division of Infectious Diseases and Immunology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90048) |
| Abstract | We previously identified a novel alternatively spliced isoform of human myeloid differentiation protein-2 (MD-2s) that competitively inhibits binding of MD-2 to TLR4 in vitro. In this study, we investigated the protective role of MD-2s in LPS-induced acute lung injury by delivering intratracheally an adenovirus construct that expressed MD-2s (Ad-MD-2s). After adenovirus-mediated gene transfer, MD-2s was strongly expressed in lung epithelial cells and readily detected in bronchoalveolar lavage fluid. Compared to adenovirus serotype 5 containing an empty vector lacking a transgene control mice, Ad-MD-2s delivery resulted in significantly less LPS-induced inflammation in the lungs, including less protein leakage, cell recruitment, and expression of proinflammatory cytokines and chemokines, such as IL-6, keratinocyte chemoattractant, and MIP-2. Bronchoalveolar lavage fluid from Ad-MD-2s mice transferred into lungs of naive mice before intratracheal LPS challenge diminished proinflammatory cytokine levels. As house dust mite (HDM) sensitization is dependent on TLR4 and HDM Der p 2, a structural homolog of MD-2, we also investigated the effect of MD-2s on HDM-induced allergic airway inflammation. Ad-MD-2s given before HDM sensitization significantly inhibited subsequent allergic airway inflammation after HDM challenge, including reductions in eosinophils, goblet cell hyperplasia, and IL-5 levels. Our study indicates that the alternatively spliced short isoform of human MD-2 could be a potential therapeutic candidate to treat human diseases induced or exacerbated by TLR4 signaling, such as Gram-negative bacterial endotoxin-induced lung injury and HDM-triggered allergic lung inflammation. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1402123 |
| Journal | The Journal of Immunology |
| Issue Number | 4 |
| Volume Number | 194 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2015-02-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Lymphocyte Antigen 96 Immunology Pneumonia Genetics Acute Lung Injury Alternative Splicing Animals Blotting, Western Disease Models, Animal Flow Cytometry Hypersensitivity Immunohistochemistry Mice Mice, Inbred C57bl Mice, Transgenic Protein Isoforms Real-time Polymerase Chain Reaction Toll-like Receptor 4 Transfection Research Support, N.i.h., Extramural Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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