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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2008-5-5
pubmed:abstractText
T-bet and STAT4 play critical roles in helper T cell differentiation, especially for Th1 cells. However, it is still unknown about the relative importance and redundancy of T-bet and STAT4 for Th1 differentiation. It is also unknown about their independent role of T-bet and STAT4 in the regulation of allergic airway inflammation. In this study, we addressed these issues by comparing T-bet-deficient (T-bet(-/-)) mice, STAT4(-/-) mice, and T-bet- and STAT4-double-deficient (T-bet(-/-)STAT4(-/-)) mice on the same genetic background. Th1 differentiation was severely decreased in T-bet(-/-) mice and STAT4(-/-) mice as compared with that in wild-type mice, but Th1 differentiation was still observed in T-bet(-/-) mice and STAT4(-/-) mice. However, Th1 cells were hardly detected in T-bet(-/-)STAT4(-/-) mice. In contrast, the maintenance of Th17 cells was enhanced in T-bet(-/-) mice but was reduced in STAT4(-/-) mice and T-bet(-/-)STAT4(-/-) mice. In vivo, Ag-induced eosinophil and neutrophil recruitment into the airways was enhanced in T-bet(-/-) mice but was attenuated in STAT4(-/-) mice and T-bet(-/-)STAT4(-/-) mice. Ag-induced IL-17 production in the airways was also diminished in STAT4(-/-) mice and T-bet(-/-)STAT4(-/-) mice. These results indicate that STAT4 not only plays an indispensable role in T-bet-independent Th1 differentiation but also is involved in the maintenance of Th17 cells and the enhancement of allergic airway inflammation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
180
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6656-62
pubmed:meshHeading
pubmed-meshheading:18453585-Animals, pubmed-meshheading:18453585-Bronchial Hyperreactivity, pubmed-meshheading:18453585-CD4-Positive T-Lymphocytes, pubmed-meshheading:18453585-Cell Differentiation, pubmed-meshheading:18453585-Cell Proliferation, pubmed-meshheading:18453585-Cytokines, pubmed-meshheading:18453585-Flow Cytometry, pubmed-meshheading:18453585-Hypersensitivity, pubmed-meshheading:18453585-Interleukin-17, pubmed-meshheading:18453585-Mice, pubmed-meshheading:18453585-Mice, Mutant Strains, pubmed-meshheading:18453585-Ovalbumin, pubmed-meshheading:18453585-Pneumonia, pubmed-meshheading:18453585-STAT4 Transcription Factor, pubmed-meshheading:18453585-T-Box Domain Proteins, pubmed-meshheading:18453585-T-Lymphocyte Subsets, pubmed-meshheading:18453585-Th1 Cells, pubmed-meshheading:18453585-Th2 Cells
pubmed:year
2008
pubmed:articleTitle
Overlapping and distinct roles of STAT4 and T-bet in the regulation of T cell differentiation and allergic airway inflammation.
pubmed:affiliation
Department of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't