• Int. J. Biochem. Cell Biol. · Jul 2014

    Review

    The TMEM16A chloride channel as an alternative therapeutic target in cystic fibrosis.

    • Elvira Sondo, Emanuela Caci, and Luis J V Galietta.
    • U.O.C. Genetica Medica, Istituto Giannina Gaslini, 16147 Genova, Italy.
    • Int. J. Biochem. Cell Biol. 2014 Jul 1; 52: 73-6.

    AbstractCystic fibrosis (CF), a multiorgan genetic disease, is caused by loss of function of CFTR, a cAMP-regulated anion channel. In CF airway epithelia, defective Cl(-) and bicarbonate secretion impairs mucociliary clearance and other innate defense mechanisms, favoring the colonization of the lungs by highly virulent bacteria. The airway epithelium expresses TMEM16A, a second type of Cl(-) channel that is activated by cytosolic Ca(2+). TMEM16A is particularly expressed in goblet cells. This specific localization could be important in the release and hydration of mucins. Activation of TMEM16A with pharmacological agents could circumvent the primary defect in CF. This strategy needs to be carefully designed and tested to avoid possible undesired effects due to the expression of TMEM16A in other cell types such as bronchial smooth muscle cells. This article is part of a Directed Issue entitled: Cystic Fibrosis: From o-mics to cell biology, physiology, and therapeutic advances. Copyright © 2014 Elsevier Ltd. All rights reserved.

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