期刊
AMERICAN JOURNAL OF RESPIRATORY CELL AND MOLECULAR BIOLOGY
卷 49, 期 4, 页码 511-516出版社
AMER THORACIC SOC
DOI: 10.1165/rcmb.2012-0419RC
关键词
cystic fibrosis; CFTR; mucus
资金
- Cystic Fibrosis Canada (BREATHE Program)
- Canada Foundation for Innovation
Cystic fibrosis (CF) is caused by mutations in the tightly regulated anion channel cystic fibrosis transmembrane conductance regulator (CFTR), yet much of the pathology in this disease results from mucus obstruction of the small airways and other organs. Mucus stasis has been attributed to the abnormal luminal environment of CF airways, which results from dehydration of the mucus gel or low bicarbonate concentration. We show here that CFTR and MUC5AC are present in single mucin-containing granules isolated from a human airway epithelial cell line and from highly differentiated airway primary cell cultures. CFTR was not detected in MUC5AC granules from CFTR knockdown cells or CF primary cells. The results suggest a direct link between CFTR and the mucus defect.
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