Linked Life Data

11726400

Source:http://linkedlifedata.com/resource/pubmed/id/11726400

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2001-11-29
pubmed:abstractText
Remodeling of the airways, as occurs in asthmatic patients, is associated with the continual presence of inflammatory mediators and Th2 cytokines, especially interleukin (IL)-13, during cycles of epithelial injury and repair. In this study, we examined the effect of IL-13 on well-differentiated normal human bronchial epithelial (NHBE) cells maintained in air-liquid interface culture. IL-13 induced proliferation of NHBE cells after 24 h exposure, as reflected by [(3)H]thymidine uptake and cell counts. The effects of IL-13 were mediated through the epidermal growth factor receptor (EGFR), as proliferation was attenuated by AG1478, an EGFR tyrosine kinase inhibitor. Proliferation appeared to be mediated by transforming growth factor (TGF)-alpha, a potent ligand for EGFR, which was released rapidly from NHBE cells in response to IL-13. Neutralizing antibody to TGF-alpha, but not antibodies against other potentially important growth factors (EGF, heparin binding epidermal growth factor-like growth factor [HB-EGF], platelet-derived growth factor [PDGF]), inhibited the mitogenic response to IL-13. This study provides the first experimental evidence that IL-13 can initiate a proliferative response of human airway epithelium in the absence of inflammatory cells or other cell types. The results are consistent with a mechanism whereby IL-13 induces release of TGF-alpha from the epithelial cells, which in turn binds via an autocrine/paracrine-type action to the EGFR, initiating proliferation. IL-13-induced airway remodeling in vivo may involve this epithelium-driven response.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1044-1549
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
739-43
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Interleukin-13 induces proliferation of human airway epithelial cells in vitro via a mechanism mediated by transforming growth factor-alpha.
pubmed:affiliation
Department of Anatomy, Physiological Sciences and Radiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina 27606, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't