Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 21, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/ijms21176420
Keywords
premature termination codon; nonsense mutation; genetic disorder; translational readthrough inducing drugs; oxadiazoles
Funding
- Italian Cystic Fibrosis Research Foundation [3/2017]
- Delegazione di Palermo, Delegazione di Vittoria (Ragusa) e Siracusa
- Delegazione FFC di Catania Mascalucia
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Cystic fibrosis (CF) patients develop a severe form of the disease when the cystic fibrosis transmembrane conductance regulator (CFTR) gene is affected by nonsense mutations. Nonsense mutations are responsible for the presence of a premature termination codon (PTC) in the mRNA, creating a lack of functional protein. In this context, translational readthrough-inducing drugs (TRIDs) represent a promising approach to correct the basic defect caused by PTCs. By using computational optimization and biological screening, we identified three new small molecules showing high readthrough activity. The activity of these compounds has been verified by evaluating CFTR expression and functionality after treatment with the selected molecules in cells expressing nonsense-CFTR-mRNA. Additionally, the channel functionality was measured by the halide sensitive yellow fluorescent protein (YFP) quenching assay. All three of the new TRIDs displayed high readthrough activity and low toxicity and can be considered for further evaluation as a therapeutic approach toward the second major cause of CF.
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