TY  - JOUR
A1  - Meyners, Christian
A1  - Mertens, Monique
A1  - Wessig, Pablo
A1  - Meyer-Almes, Franz-Josef
T1  - A Fluorescence-Lifetime-Based Binding Assay for Class IIa Histone Deacetylases
JF  - Chemistry - a European journal
N2  - Class IIa histone deacetylases (HDACs) show extremely low enzymatic activity and no commonly accepted endogenous substrate is known today. Increasing evidence suggests that these enzymes exert their effect rather through molecular recognition of acetylated proteins and recruiting other proteins like HDAC3 to the desired target location. Accordingly, class IIa HDACs like bromodomains have been suggested to act as “Readers” of acetyl marks, whereas enzymatically active HDACs of class I or IIb are called “Erasers” to highlight their capability to remove acetyl groups from acetylated histones or other proteins. Small-molecule ligands of class IIa histone deacetylases (HDACs) have gained tremendous attention during the last decade and have been suggested as pharmaceutical targets in several indication areas such as cancer, Huntington's disease and muscular atrophy. Up to now, only enzyme activity assays with artificial chemically activated trifluoroacetylated substrates are in use for the identification and characterization of new active compounds against class IIa HDACs. Here, we describe the first binding assay for this class of HDAC enzymes that involves a simple mix-and-measure procedure and an extraordinarily robust fluorescence lifetime readout based on [1,3]dioxolo[4,5-f]benzodioxole-based ligand probes. The principle of the assay is generic and can also be transferred to class I HDAC8.
KW  - drug discovery
KW  - enzymes
KW  - fluorescent probes
KW  - high-throughput screening
KW  - hydrolases
Y1  - 2017
U6  - https://doi.org/10.1002/chem.201605140
SN  - 0947-6539
SN  - 1521-3765
VL  - 23
IS  - 13
SP  - 3107
EP  - 3116
PB  - Wiley-VCH
CY  - Weinheim
ER  -