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Am J Respir Cell Mol Biol. 2014 Sep;51(3):354-62. doi: 10.1165/rcmb.2014-0007OC.

A Genomic Signature Approach to Rescue ΔF508-Cystic Fibrosis Transmembrane Conductance Regulator Biosynthesis and Function.

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  • 11 Department of Pediatrics.

Abstract

The most common cystic fibrosis (CF) mutation, ΔF508, causes protein misfolding, leading to proteosomal degradation. We recently showed that expression of miR-138 enhances CF transmembrane conductance regulator (CFTR) biogenesis and partially rescues ΔF508-CFTR function in CF airway epithelia. We hypothesized that a genomic signature approach can be used to identify new bioactive small molecules affecting ΔF508-CFTR rescue. The Connectivity Map was used to identify 27 small molecules with potential to restore ΔF508-CFTR function in airway epithelia. The molecules were screened in vitro for efficacy in improving ΔF508-CFTR trafficking, maturation, and chloride current. We identified four small molecules that partially restore ΔF508-CFTR function in primary CF airway epithelia. Of these, pyridostigmine showed cooperativity with corrector compound 18 in improving ΔF508-CFTR function. There are few CF therapies based on new molecular insights. Querying the Connectivity Map with relevant genomic signatures offers a method to identify new candidates for rescuing ΔF508-CFTR function.

KEYWORDS:

Connectivity Map; airway epithelia; corrector compound 18; cystic fibrosis; small molecule compound

PMID:
24669817
[PubMed - in process]
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