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• W3136379455 abstract "Abstract C407 is a compound that corrects the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) protein carrying the p.Phe508del (F508del) mutation. We investigated the corrector effect of c407 and its derivatives on F508del-CFTR protein. Molecular docking and dynamics simulations combined with site-directed mutagenesis suggested that c407 stabilizes the F508del-Nucleotide Binding Domain 1 (NBD1) during the co-translational folding process by occupying the position of the p.Phe1068 side chain located at the fourth intracellular loop (ICL4). After CFTR domains assembly, c407 occupies the position of the missing p.Phe508 side chain. C407 alone or in combination with the F508del-CFTR corrector VX-809, increased CFTR activity in cell lines but not in primary respiratory cells carrying the F508del mutation. A structure-based approach resulted in the synthesis of an extended c407 analog G1, designed to improve the interaction with ICL4. G1 significantly increased CFTR activity and response to VX-809 in primary nasal cells of F508del homozygous patients. Our data demonstrate that in-silico optimized c407 derivative G1 acts by a mechanism different from the reference VX-809 corrector and provide insights into its possible molecular mode of action. These results pave the way for novel strategies aiming to optimize the flawed ICL4–NBD1 interface." @default.
• W3136379455 created "2021-03-29" @default.
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• W3136379455 date "2021-03-25" @default.
• W3136379455 modified "2023-10-11" @default.
• W3136379455 title "New insights into structure and function of bis-phosphinic acid derivatives and implications for CFTR modulation" @default.
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• W3136379455 doi "https://doi.org/10.1038/s41598-021-83240-x" @default.
• W3136379455 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7994384" @default.
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• W3136379455 hasPublicationYear "2021" @default.
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