Document Detail

Dok adaptors play anti-inflammatory roles in pulmonary homeostasis.
MedLine Citation:
PMID:  23205702     Owner:  NLM     Status:  Publisher    
Asthma is a chronic inflammatory disease of the lung with airflow obstruction and bronchospasm, characterized by pulmonary eosinophilia, airway remodeling, increased airway hyperresponsiveness to environmental stimuli, and excessive Th2-type cytokine production. Recent studies indicate that crosstalk between the innate and adaptive immune systems is crucial for this disease. We and others have showed that the Dok (downstream of tyrosine kinases) family adaptors, Dok-1, Dok-2, and Dok-3, play essential roles in negative regulation of a wide variety of signaling pathways in both innate and adaptive immunities. Here, histopathology and bronchoalveolar lavage fluid (BALF) cellularity showed spontaneous pulmonary inflammation in Dok-1(-/-) Dok-2(-/-) Dok-3(-/-) (TKO) mice, but not in Dok-1(-/-) Dok-2(-/-) or Dok-3(-/-) mice, with hallmarks of asthma, including eosinophilia, goblet cell hyperplasia, and subepithelial fibrosis. Consistently, TKO mice, but not the other mutants, showed increased airway hyperresponsiveness to methacholine inhalation. In addition, Th2-type cytokine concentrations in BALF were increased in TKO mice. These findings provide strong evidence that Dok-1, Dok-2, and Dok-3 cooperatively play critical anti-inflammatory roles in lung homeostasis.
Ryuichi Mashima; Sumimasa Arimura; Shuhei Kajikawa; Hideaki Oda; Susumu Nakae; Yuji Yamanashi
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-4
Journal Detail:
Title:  Genes to cells : devoted to molecular & cellular mechanisms     Volume:  -     ISSN:  1365-2443     ISO Abbreviation:  Genes Cells     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607379     Medline TA:  Genes Cells     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors Genes to Cells © 2012 by the Molecular Biology Society of Japan and Wiley Publishing Asia Pty Ltd.
Division of Genetics, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan.
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