Cyclic compression increases F508 Del CFTR expression in ciliated human airway epithelium.

A new interesting article has been published in Am J Physiol Lung Cell Mol Physiol. 2019 May 22. doi: 10.1152/ajplung.00020.2019. and titled:

Cyclic compression increases F508 Del CFTR expression in ciliated human airway epithelium.

Authors of this article are:

Marozkina N, Bosch J, Cotton CU, Smith L, Seckler JV, Zaman K, Rehman S, Periasamy A, Gaston H, Altawallbeh G, Davis M, Jones DR, Schilz R, Randell SH, Gaston B.

A summary of the article is shown below:

Mechanisms by which transepithelial pressure changes observed during exercise and airway clearance can benefit lung health are challenging to study. Here, we have studied 117 mature, fully ciliated airway epithelial cell filters grown at air liquid interface grown from 10 cystic fibrosis (CF) and 19 control subjects. These were exposed to cyclic increases in apical air pressure of 15 cm H2O for varying times. We measured the effect on proteins relevant to lung health, with a focus on the CF transmembrane regulator (CFTR). Immunoflourescence and immunoblot data were concordant in demonstrating that air pressure increased F508Del CFTR expression and maturation. This effect was in part dependent on the presence of cilia, on Ca2+ influx and on formation of nitrogen oxides. These data provide a mechanosensory mechanism by which changes in luminal air pressure, like those observed during exercise and airway clearance, can affect epithelial protein expression and benefit patients with diseases of the airways.

Check out the article’s website on Pubmed for more information:



This article is a good source of information and a good way to become familiar with topics such as: Airway cilia; Airway clearance; Airway pressure; Cystic fibrosis; S-nitrosocysteine.