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.

Pibiri I., Melfi R., Tutone M., Di Leonardo A., Pace A., & Lentini L. (2020). Targeting nonsense: Optimization of 1,2,4-oxadiazole trids to rescue cftr expression and functionality in cystic fibrosis cell model systems. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 21(17), 1-18 [10.3390/ijms21176420].

Targeting nonsense: Optimization of 1,2,4-oxadiazole trids to rescue cftr expression and functionality in cystic fibrosis cell model systems

Pibiri I.
;
Melfi R.;Tutone M.;Di Leonardo A.;Pace A.;Lentini L.
2020

Abstract

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.
Settore CHIM/06 - Chimica Organica
Settore BIO/18 - Genetica
Settore BIO/11 - Biologia Molecolare
Settore CHIM/08 - Chimica Farmaceutica
Pibiri I., Melfi R., Tutone M., Di Leonardo A., Pace A., & Lentini L. (2020). Targeting nonsense: Optimization of 1,2,4-oxadiazole trids to rescue cftr expression and functionality in cystic fibrosis cell model systems. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 21(17), 1-18 [10.3390/ijms21176420].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/437257
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