A new nanoDSF approach to anti-tubulin compounds screening revealed novel MTAs among approved drugs.
Baksheeva, V. E.; La Rocca, R.; Leloup, L.; Souberan, A.; Berges, R.; Allegro, D.; Derviaux, C.; Pasquier, E.; Roche, P.; Morelli, X.; Devred, F.; Tchoghandjian, A.; Tabouret, E.; Golovin, A. V.; Tsvetkov, P. O.
Show abstract
Microtubule Targeting Agents (MTAs) constitute a vital category of tubulin-binding compounds, deployed across anticancer therapies. Despite the array of MTA drugs developed by pharmaceutical entities, the quest for novel efficacious molecules continues unabated. We unveil an innovative in vitro MTA screening methodology employing nano differential scanning fluorimetry (nanoDSF), presenting distinct advantages over known assays. This novel approach not only assesses compound-tubulin binding but also quantitatively analyzes their impact on tubulin polymerization. Proposed nanoDSF assay was rigorously validated using the Prestwick Chemical Library, which encompasses 1,520 approved compounds, successfully identifying all previously known MTAs. Furthermore, this screening has unearthed potential anti-tubulin agents among drugs currently utilized for non-related medical conditions, offering insights into their mechanisms of action in inhibiting cancer cell proliferation and/or inducing cytotoxicity. These discoveries herald new opportunities for drug repositioning involving the newly identified MTAs and substantially streamline the process of screening extensive chemical libraries for MTAs featuring novel chemical structures.
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