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Orphan receptors
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Long non-coding RNAs (lncRNAs) play important roles in many pathophysiological processes, including cancer progression. Namely, lncRNA Receptor-tyrosine-kinase-like orphan receptor-1 antisense 1 (ROR1-AS1) is crucial for cancer occurrence and progression in organs such as the liver or bladder. However, its expression and role in cholangiocarcinoma (CCA) have not been thoroughly explored.
12p
vioracle
29-09-2023
4
2
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Fibroblast growth factor-19 (FGF19) is an intestinal hormone that mediates postprandial metabolic responses in the liver. The unusual orphan nuclear receptor, small heterodimer partner (SHP), acts as a co-repressor for many transcriptional factors and has been implicated in diverse biological pathways including FGF19-mediated repression of bile acid synthesis.
14p
viaristotle
29-01-2022
11
0
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NR4A orphan nuclear receptors are involved in multiple biological processes which are important in tumorigenesis such as cell proliferation, apoptosis, differentiation, and glucose utilization. The significance of NR4A family member NURR1 (NR4A2) in breast cancer etiology has not been elucidated.
9p
vijisoo2711
29-09-2020
11
1
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The orphan receptors COUP-TF (chicken ovalbumin upstream promoter transcription factor) I and II are members of the nuclear receptor superfamily that play distinct and critical roles in vertebrate organogenesis. The involvement of COUP-TFs in cancer development has recently been suggested by several studies but remains poorly understood.
13p
virose2711
22-09-2020
20
1
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Nurr1, a member of the orphan receptor family, plays an important role in several types of cancer. Our previous work demonstrated that increased expression of Nurr1 plays a significant role in the initiation and progression of prostate cancer (PCa), though the mechanisms for regulation of Nurr1 expression remain unknown.
12p
vinaypyidaw2711
26-08-2020
12
2
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Orphan nuclear receptors ERRα, ERRβ and ERRγ that belong to NR3B or type IV nuclear receptor family are well studied for their role in breast cancer pathophysiology. Their homology with the canonical estrogen receptor dictates their possible contributing role in mammary gland development and disease.
11p
vibaku2711
22-07-2020
17
1
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Angiopoietin growth factors (Angs) regulate angiogenesis and lymphangiogenesis by binding to the endothelial Tie2 receptor. Ang2 expression is elevated in tissue hypoxia and inflammation, which also induce cleavage of the extracellular domain of the orphan Tie1 receptor.
10p
vikuala271
13-06-2020
8
1
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Chickenovalbuminupstreampromoter-transcriptionfactorI (COUP-TFI, or NR2F1) is an orphan nuclear receptor that plays amajor role in the development of the nervous system. We show here that three ETS response elements in the COUP-TFIpromoter mediate its transcription. A reporter gene containing theseETSbinding sites is activatedbyEts-1, while the same reporter with point mutations on all three ETS response elements is not.
9p
research12
29-04-2013
24
1
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The estrogen receptor-related receptorc (ERRc/ERR3/ NR3B3) is an orphan member of the nuclear receptor superfamily closely related to the estrogen receptors. To explore the DNA binding characteristics, the protein–DNA interaction was studied in electrophoretic mobility shift assays (EMSAs). In vitro translated ERRc binds as a homodimer to direct repeats (DR) without spacing of the nuclear receptor half-site 5¢-AGGTCA-3¢(DR-0), to exten-dedhalf-sites, and to the inverted estrogen response element....
12p
research12
23-04-2013
18
1
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The invertebrate nuclear receptor, ultraspiracle (USP), an ortholog of the vertebrate RXR, is typically modelled as an orphan receptor that functions without a ligand-binding activity. The identification of a ligand that can transcrip-tionally activate USP would provide heuristic leads to the structure of potentially high affinity activating compounds, with which to detect unknown regulatory pathways in which this nuclear receptor participates.
11p
tumor12
22-04-2013
29
1
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Thefushi tarazu factor 1 (FTZ-F1) nuclear receptor sub-family comprises orphan receptors with crucial roles in development and sexual differentiation in vertebrates and invertebrates. We describe the structure and functional properties of an FTZ-F1 from the platyhelminth parasite of humans,Schistosoma mansoni, the first receptor from this family tobe characterized inaLophotrochozoan. It contains awell conservedDNA-binding domain (55–63%identity to other family members) and a poorly conserved ligand-binding domain (20% identity to that of zebrafish FF1a)....
12p
tumor12
22-04-2013
43
1
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Recently, we have shown that the biosynthesis of androste-nol, a potential endogenous ligand for the orphan receptors constitutive androstane receptor and pregnane-X-receptor, requires the presence of enzymes of the steroidogenic path-way, such as 3b-hydroxysteroid dehydrogenase, 5a-reduc-tase and 3a-hydroxysteroid dehydrogenase.
7p
tumor12
20-04-2013
34
1
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Nur77 is one member of the nuclear receptor superfamily. As a transcrip-tion factor, Nur77 participates in a variety of biological processes, includ-ing T cell development, inflammatory responses, steroid hormone synthesis, and hepatic glucose metabolism. It typically acts via binding to the Nur77 responsive element (NBRE) in the promoter regions of its target genes.
14p
media19
06-03-2013
46
2
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The orphan receptors, Rev-erba and Rev-erbb, are members of the nuclear receptor superfamily and specifically repress apolipoprotein CIII (apoCIII) gene expression in rats and humans. Moreover, Rev-erbanull mutant mice have elevated very low density lipoprotein triacylglycerol and apoCIII levels.
12p
media19
04-03-2013
32
1
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Liver receptor homolog-1 (LRH-1; NR5A2) is an orphan member of the nuclear receptor superfamily, mainly expressed in endoderm-derived tissues and in the ovary. In ovarian granulosa and luteal cells, LRH-1 regulates the expression of genes associated with ovarian steroidogenesis.
12p
vinaphone15
27-02-2013
27
1
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The Rhodopsin family of G protein coupled receptors (GPCRs) includes the phylogenetic a-group consisting of about 100 human members. The a-group is the only group of GPCRs that has many receptors for biogenic amines which are major drug targets. Several members of this group are orphan receptors and their functions are elusive. In this study we present a detailed phylogenetic and anatomical characterization of the Gpr153 recep-tor and also attempt to study its functional role.
14p
cosis54
08-12-2012
50
1
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Abstract While there have been many reports investigating the biological activity and signaling mechanisms of isoprostanes, their role in biology, particularly in platelets, appears to still be underestimated. Moreover, whether these lipids have their own receptors is still debated, despite multiple reports that discrete receptors for isporpstanes do exist on platelets, vascular tissues, amongst others.
13p
toshiba23
18-11-2011
46
2
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