Our findings indicate that kinetin isosteres protect Friedreich́s ataxia patient-derived fibroblasts against glutathione depletion, protect neuron-like SH-SY5Y cells from glutamate-induced oxidative damage, and correct aberrant splicing of the ELP1 gene in fibroblasts derived from a familial dysautonomia patient. Although the mechanism of action of kinetin derivatives remains unclear, our data suggest that the cytoprotective activity of some purine isosteres is mediated by their ability to reduce oxidative stress. Further, the studies of permeation across artificial membrane and model gut and blood-brain barriers indicate that the compounds are orally available and can reach central nervous system. Overall, our data demonstrate that isosteric replacement of the kinetin purine scaffold is a fruitful strategy for improving known biological activities of kinetin and discovering novel therapeutic opportunities.
Monday, January 11, 2021
Cytoprotective activities of kinetin purine isosteres
Barbara Maková, Václav Mik, Barbora Lišková, Gabriel González, Dominik Vítek, Martina Medvedíková, Beata Monfort, Veronika Ručilová, Alena Kadlecová, Prashant Khirsariya, Zoila Gándara Barreiro, Libor Havlíček, Marek Zatloukal, Miroslav Soural, Kamil Paruch, Benoit D'Autréaux, Marián Hajdúch, Miroslav Strnad, Jiří Voller, Bioorganic & Medicinal Chemistry, 2021, 115993, doi:10.1016/j.bmc.2021.115993.
