Rational Design of a Novel Tubulin Inhibitor with a Unique Mechanism of Action.
Angew Chem Int Ed Engl
; 61(25): e202204052, 2022 06 20.
Article
de En
| MEDLINE
| ID: mdl-35404502
ABSTRACT
In this study, we capitalized on our previously performed crystallographic fragment screen and developed the antitubulin small molecule Todalam with only two rounds of straightforward chemical synthesis. Todalam binds to a novel tubulin site, disrupts microtubule networks in cells, arrests cells in G2/M, induces cell death, and synergizes with vinblastine. The compound destabilizes microtubules by acting as a molecular plug that sterically inhibits the curved-to-straight conformational switch in the α-tubulin subunit, and by sequestering tubulin dimers into assembly incompetent oligomers. Our results describe for the first time the generation of a fully rationally designed small molecule tubulin inhibitor from a fragment, which displays a unique molecular mechanism of action. They thus demonstrate the usefulness of tubulin-binding fragments as valuable starting points for innovative antitubulin drug and chemical probe discovery campaigns.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Tubuline
/
Modulateurs de la polymérisation de la tubuline
Langue:
En
Journal:
Angew Chem Int Ed Engl
Année:
2022
Type de document:
Article
Pays d'affiliation:
Suisse