European Journal of Medicinal Chemistry (2021)
Update date:2022-08-15
Topics:
Rojas-Prats, Elisa
Martinez-Gonzalez, Loreto
Gonzalo-Consuegra, Claudia
Liachko, Nicole F.
Perez, Concepción
Ramírez, David
Kraemer, Brian C.
Martin-Requero, ángeles
Perez, Daniel I.
Gil, Carmen
de Lago, Eva
Martinez, Ana
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with no known cure. Aggregates of the nuclear protein TDP-43 have been recognized as a hallmark of proteinopathy in both familial and sporadic cases of ALS. Post-translational modifications of this protein, include hyperphosphorylation, cause disruption of TDP-43 homeostasis and as a consequence, promotion of its neurotoxicity. Among the kinases involved in these changes, cell division cycle kinase 7 (CDC7) plays an important role by directly phosphorylating TDP-43. In the present manuscript the discovery, synthesis, and optimization of a new family of selective and ATP-competitive CDC7 inhibitors based on 6-mercaptopurine scaffold are described. Moreover, we demonstrate the ability of these inhibitors to reduce TDP-43 phosphorylation in both cell cultures and transgenic animal models such as C. elegans and Prp-hTDP43 (A315T) mice. Altogether, the compounds described here may be useful as versatile tools to explore the role of CDC7 in TDP-43 phosphorylation and also as new drug candidates for the future development of ALS therapies.
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