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2010 ; 468
(7327
): 1119-23
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Suppression of inflammation by a synthetic histone mimic
#MMPMID21068722
Nicodeme E
; Jeffrey KL
; Schaefer U
; Beinke S
; Dewell S
; Chung CW
; Chandwani R
; Marazzi I
; Wilson P
; Coste H
; White J
; Kirilovsky J
; Rice CM
; Lora JM
; Prinjha RK
; Lee K
; Tarakhovsky A
Nature
2010[Dec]; 468
(7327
): 1119-23
PMID21068722
show ga
Interaction of pathogens with cells of the immune system results in activation of
inflammatory gene expression. This response, although vital for immune defence,
is frequently deleterious to the host due to the exaggerated production of
inflammatory proteins. The scope of inflammatory responses reflects the
activation state of signalling proteins upstream of inflammatory genes as well as
signal-induced assembly of nuclear chromatin complexes that support mRNA
expression. Recognition of post-translationally modified histones by nuclear
proteins that initiate mRNA transcription and support mRNA elongation is a
critical step in the regulation of gene expression. Here we present a novel
pharmacological approach that targets inflammatory gene expression by interfering
with the recognition of acetylated histones by the bromodomain and extra terminal
domain (BET) family of proteins. We describe a synthetic compound (I-BET) that by
'mimicking' acetylated histones disrupts chromatin complexes responsible for the
expression of key inflammatory genes in activated macrophages, and confers
protection against lipopolysaccharide-induced endotoxic shock and
bacteria-induced sepsis. Our findings suggest that synthetic compounds
specifically targeting proteins that recognize post-translationally modified
histones can serve as a new generation of immunomodulatory drugs.
|*Inflammation/drug therapy/prevention & control
[MESH]
|Acetylation/drug effects
[MESH]
|Animals
[MESH]
|Anti-Inflammatory Agents/chemistry/*pharmacology/therapeutic use
[MESH]
|Benzodiazepines
[MESH]
|Cells, Cultured
[MESH]
|Epigenomics
[MESH]
|Gene Expression Regulation/*drug effects
[MESH]
|Genome-Wide Association Study
[MESH]
|Heterocyclic Compounds, 4 or More Rings/chemistry/*pharmacology/therapeutic use
[MESH]