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Role of gob-5 in mucus overproduction and airway hyperresponsiveness in asthma.

Authors: Nakanishi, A  Morita, S  Iwashita, H  Sagiya, Y  Ashida, Y  Shirafuji, H  Fujisawa, Y  Nishimura, O  Fujino, M 
Citation: Nakanishi A, etal., Proc Natl Acad Sci U S A. 2001 Apr 24;98(9):5175-80. Epub 2001 Apr 10.
Pubmed: (View Article at PubMed) PMID:11296262
DOI: Full-text: DOI:10.1073/pnas.081510898

Airway hyperresponsiveness (AHR), goblet cell metaplasia, and mucus overproduction are important features of bronchial asthma. To elucidate the molecular mechanisms behind these pulmonary pathologies, we examined for genes preferentially expressed in the lungs of a murine model of allergic asthma by using suppression subtractive hybridization (SSH). We identified a gene called gob-5 that had a selective expression pattern in the airway epithelium with AHR. Here, we show that gob-5, a member of the calcium-activated chloride channel family, is a key molecule in the induction of murine asthma. Intratracheal administration of adenovirus-expressing antisense gob-5 RNA into AHR-model mice efficiently suppressed the asthma phenotype, including AHR and mucus overproduction. In contrast, overexpression of gob-5 in airway epithelia by using an adenoviral vector exacerbated the asthma phenotype. Introduction of either gob-5 or hCLCA1, the human counterpart of gob-5, into the human mucoepidermoid cell line NCI-H292 induced mucus production as well as MUC5AC expression. Our results indicated that gob-5 may play a critical role in murine asthma, and its human counterpart hCLCA1 is therefore a potential target for asthma therapy.


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CRRD Object Information
CRRD ID: 4145661
Created: 2010-11-11
Species: All species
Last Modified: 2010-11-11
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.