Pyrazolones Activate the Proteasome by Gating Mechanisms and Protect Neuronal Cells from β‐Amyloid Toxicity
作者:Anna Maria Santoro、Valeria Lanza、Francesco Bellia、Diego Sbardella、Grazia R. Tundo、Alessandra Cannizzo、Giuseppe Grasso、Mariaconcetta Arizzi、Vincenzo G. Nicoletti、Stefano Alcaro、Giosuè Costa、Adriana Pietropaolo、Gaetano Malgieri、Gianluca D'Abrosca、Roberto Fattorusso、Sara García‐Viñuales、Ikhlas M. M. Ahmed、Massimiliano Coletta、Danilo Milardi
DOI:10.1002/cmdc.201900612
日期:2020.2.5
Proteasome malfunction parallels abnormal amyloid accumulation in Alzheimer's Disease (AD). Here we scrutinize a small library of pyrazolones by assaying their ability to enhance proteasome activity and protect neuronal cells from amyloid toxicity. Tube tests evidenced that aminopyrine and nifenazone behave as 20S proteasome activators. Enzyme assays carried out on an "open gate" mutant (α3ΔN) proteasome
作者:Nina Declas、John R. J. Maynard、Laure Menin、Natalia Gasilova、Sebastian Götze、Jakob L. Sprague、Pierre Stallforth、Stefan Matile、Jerome Waser
DOI:10.1039/d2sc04558c
日期:——
successfully applied to peptides and proteins and tolerated all other nucleophilic residues, with the exception of cysteine. The generated VBX were further functionalized by palladium-catalyzed cross-coupling and azide–alkyne cycloaddition reactions. The method could be successfully used to modify bioactive natural products and native streptavidin to enable thiol-mediatedcellularuptake.