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Updated: Jul 26, 2025

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
Balancing Nonsense Mutation Readthrough and Toxicity of Designer Aminoglycosides for Treatment of Genetic Diseases
Sandip Guchhait1, Alina Khononov1, Tomasz Pieńko1
1The Edith and Joseph Fischer Enzyme Inhibitors Laboratory, Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
Abstract:
New derivatives of aminoglycosides with a side chain 1,2-aminoalcohol at the 5" position of ring III were designed, synthesized, and biologically evaluated. The novel lead structure (compound 6), exhibiting substantially enhanced selectivity toward eukaryotic versus prokaryotic ribosome, high readthrough activity, and considerably lower toxicity than the previous lead compounds, was discovered. Balanced readthrough activity and toxicity of 6 were demonstrated in three different nonsense DNA-constructs underlying the genetic diseases, cystic fibrosis and Usher syndrome, and in two different cell lines, baby hamster kidney and human embryonic kidney cells. Molecular dynamics simulations within the A site of the 80S yeast ribosome demonstrated a remarkable kinetic stability of 6, which potentially determines its high readthrough activity.
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