7oy6
Crystal structure of human DYRK1A in complex with ARN25068
Structural highlights
DiseaseDYR1A_HUMAN Defects in DYRK1A are the cause of mental retardation autosomal dominant type 7 (MRD7) [MIM:614104. A disease characterized by primary microcephaly, severe mental retardation without speech, anxious autistic behavior, and dysmorphic features, including bitemporal narrowing, deep-set eyes, large simple ears, and a pointed nasal tip. Mental retardation is characterized by significantly below average general intellectual functioning associated with impairments in adaptative behavior and manifested during the developmental period.[1] FunctionDYR1A_HUMAN May play a role in a signaling pathway regulating nuclear functions of cell proliferation. Phosphorylates serine, threonine and tyrosine residues in its sequence and in exogenous substrates.[2] Publication Abstract from PubMedThe human kinome plays a crucial role in several pathways. Its dysregulation has been linked to diverse central nervous system (CNS)-related disorders with a drastic impact on the aging population. Among them, tauopathies, such as Alzheimer's Disease (AD) and Frontotemporal Lobar degeneration (FTLD-tau), are neurodegenerative disorders pathologically defined by the presence of hyperphosphorylated tau-positive intracellular inclusions known as neurofibrillary tangles (NFTs). Compelling evidence has reported the great potential of the simultaneous modulation of multiple protein kinases (PKs) involved in abnormal tau phosphorylation through a concerted pharmacological approach to achieve a superior therapeutic effect relative to classic "one target, one drug" approaches. Here, we report on the identification and characterization of ARN25068 (4), a low nanomolar and well-balanced dual GSK-3beta and FYN inhibitor, which also shows inhibitory activity against DYRK1A, an emerging target in AD and tauopathies. Computational and X-Ray studies highlight compound 4's typical H-bonding pattern of ATP-competitive inhibitors at the binding sites of all three PKs. In a tau phosphorylation assay on Tau0N4R-TM-tGFP U2OS cell line, 4 reduces the extent of tau phosphorylation, promoting tau-stabilized microtubule bundles. In conclusion, this compound emerges as a promising prototype for further SAR explorations to develop potent and well-balanced triple GSK-3beta/FYN/DYRK1A inhibitors to tackle tau hyperphosphorylation. ARN25068, a versatile starting point towards triple GSK-3beta/FYN/DYRK1A inhibitors to tackle tau-related neurological disorders.,Demuro S, Sauvey C, Tripathi SK, Di Martino RMC, Shi D, Ortega JA, Russo D, Balboni B, Giabbai B, Storici P, Girotto S, Abagyan R, Cavalli A Eur J Med Chem. 2022 Feb 5;229:114054. doi: 10.1016/j.ejmech.2021.114054. Epub, 2021 Dec 16. PMID:34959172[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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