Identifying Potent Nonsense-Mediated mRNA Decay Inhibitors with a Novel Screening System

Autor: Julie Carrard, Fiona Ratajczak, Joséphine Elsens, Catherine Leroy, Rebekah Kong, Lucie Geoffroy, Arnaud Comte, Guy Fournet, Benoît Joseph, Xiubin Li, Sylvie Moebs-Sanchez, Fabrice Lejeune
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Biomedicines, Vol 11, Iss 10, p 2801 (2023)
Druh dokumentu: article
ISSN: 2227-9059
DOI: 10.3390/biomedicines11102801
Popis: Nonsense-mediated mRNA decay (NMD) is a quality control mechanism that degrades mRNAs carrying a premature termination codon. Its inhibition, alone or in combination with other approaches, could be exploited to develop therapies for genetic diseases caused by a nonsense mutation. This, however, requires molecules capable of inhibiting NMD effectively without inducing toxicity. We have built a new screening system and used it to identify and validate two new molecules that can inhibit NMD at least as effectively as cycloheximide, a reference NMD inhibitor molecule. These new NMD inhibitors show no cellular toxicity at tested concentrations and have a working concentration between 6.2 and 12.5 µM. We have further validated this NMD-inhibiting property in a physiopathological model of lung cancer in which the TP53 gene carries a nonsense mutation. These new molecules may potentially be of interest in the development of therapies for genetic diseases caused by a nonsense mutation.
Databáze: Directory of Open Access Journals