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2008 ; 22
(7
): 1509-20
Nephropedia Template TP
gab.com Text
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English Wikipedia
Nuclear hormone receptors for heme: REV-ERBalpha and REV-ERBbeta are
ligand-regulated components of the mammalian clock
#MMPMID18218725
Burris TP
Mol Endocrinol
2008[Jul]; 22
(7
): 1509-20
PMID18218725
show ga
The nuclear hormone receptors (NHRs), REV-ERBalpha and REV-ERBbeta, regulate a
number of physiological functions including the circadian rhythm, lipid
metabolism, and cellular differentiation. These two receptors lack the activation
function-2 region that is associated with the ability of NHRs to recruit
coactivators and activate target gene transcription. These NHRs have been
characterized as constitutive repressors of transcription due to their lack of an
identified ligand and their strong ability to recruit the corepressor, nuclear
receptor corepressor. Recently, the porphyrin heme was demonstrated to function
as a ligand for both REV-ERBs. Heme binds directly to the ligand-binding domain
and regulates the ability of these NHRs to recruit nuclear receptor corepressor
to target gene promoters. This review focuses on the physiological roles that
these two receptors play and the implications of heme functioning as their
ligand. The prospect that these NHRs, now known to be regulated by small molecule
ligands, may be targets for development of drugs for treatment of diseases
associated with aberrant circadian rhythms including metabolic and psychiatric
disorders as well as cancer is also addressed.
|*Transcription, Genetic
[MESH]
|Animals
[MESH]
|Circadian Rhythm
[MESH]
|DNA-Binding Proteins/*metabolism
[MESH]
|Drosophila melanogaster
[MESH]
|Heme/*chemistry
[MESH]
|Humans
[MESH]
|Ligands
[MESH]
|Models, Biological
[MESH]
|Models, Chemical
[MESH]
|Neoplasms/metabolism
[MESH]
|Nuclear Receptor Subfamily 1, Group D, Member 1
[MESH]
|Oscillometry
[MESH]
|Porphyrins/chemistry
[MESH]
|Receptors, Cytoplasmic and Nuclear/*chemistry/metabolism
[MESH]