Proteome analysis of differential protein expression in allergen-induced asthmatic mice lung after dexamethasone treatment.
Asthma has become substantially more prevalent in recent decades and is one of the foremost contributors to morbidity and mortality in industrialized countries. Corticosteroids are among the most effective medications for the treatment of asthma, but some patients do not respond well to corticosteroid treatment. In this study, we characterized the responses to an allergen and identified potential molecular targets of dexamethasone (Dex) treatment in acute asthma. Female BALB/c mice sensitized to ovalbumin (OVA) were challenged with aerosolized OVA for 1 week. During the challenge period, mice were treated daily with Dex by intraperitoneal injection. Phosphate-buffered saline treated and non-challenged mice served as control. Histological evaluation of OVA-induced mice revealed airway inflammation and goblet cell hyperplasia. In addition, interleukin 4 levels and interferon-gamma levels were increased and decreased, respectively. These changes were moderated by Dex treatment. Protein expression profiles were compared in each experimental group by two-dimensional gel electrophoresis and identified using matrix-assisted laser desorption/ionization-time of flight/time of flight mass spectrometry. Some proteins were increased, while others were decreased by Dex treatment. These results indicated that the regulation of protein expression might play a role in the immunological and pathological development of asthma and could be targeted for therapeutic intervention. These results may assist in the development of quantitative diagnostic markers to monitor disease progression or responses to therapy using proteomic approaches.
Roh
Gu Seob
GS
National Genome Research Institute, National Institute of Health, Seoul, Korea.
Shin
Younghyun
Y
Seo
Seong-Won
SW
Yoon
Bo Ra
BR
Yeo
Sinkoo
S
Park
Sung Jin
SJ
Cho
Jin Won
JW
Kwack
KyuBum
K
D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D001249:Asthma / Q000139:chemically induced / Q000276:immunology / Q000378:metabolism*; D001992:Bronchoalveolar Lavage Fluid; D016207:Cytokines / Q000378:metabolism; D003907:Dexamethasone / Q000494:pharmacology*; D007073:Immunoglobulin E / Q000097:blood; D008168:Lung / Q000187:drug effects* / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D010047:Ovalbumin / Q000276:immunology; D011506:Proteins / Q000276:immunology / Q000378:metabolism*; D040901:Proteomics; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
D000893:Anti-Inflammatory Agents; D016207:Cytokines; D011506:Proteins; D007073:Immunoglobulin E; D003907:Dexamethasone; D010047:Ovalbumin