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BioAssay: AID 414562

Displacement of [3H]Org43553 from human luteinizing hormone receptor expressed in CHOK1 cells

The luteinizing hormone (LH) receptor plays an important role in fertility and certain cancers. The endogenous ligands human chorionic gonadotropin (hCG) and LH bind to the large N terminal domain of the receptor. We recently reported on the first radiolabeled low molecular weight (LMW) agonist for this receptor, [(3)H]Org 43553, which was now used to screen for new LMW ligands. We identified a more ..
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 Tested Compounds
 Tested Compounds
All(1)
 
 
Active(1)
 
 
 Tested Substances
 Tested Substances
All(1)
 
 
Active(1)
 
 
 Related BioAssays
 Related BioAssays
AID: 414562
Data Source: ChEMBL (562591)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2010-05-26
Modify Date: 2013-11-16

Data Table ( Complete ):           Active    All
Target
Sequence: RecName: Full=Lutropin-choriogonadotropic hormone receptor; Short=LH/CG-R; AltName: Full=Luteinizing hormone receptor; Short=LHR; Short=LSH-R; Flags: Precursor
Description ..   
Comment ..   

Gene:LHCGR     Conserved Domain     Related Protein 3D Structures     More BioActivity Data..
BioActive Compound: 1
Description:
Title: Substituted terphenyl compounds as the first class of low molecular weight allosteric inhibitors of the luteinizing hormone receptor.

Abstract: The luteinizing hormone (LH) receptor plays an important role in fertility and certain cancers. The endogenous ligands human chorionic gonadotropin (hCG) and LH bind to the large N terminal domain of the receptor. We recently reported on the first radiolabeled low molecular weight (LMW) agonist for this receptor, [(3)H]Org 43553, which was now used to screen for new LMW ligands. We identified a terphenyl derivative that inhibited [(3)H]Org 43553 binding to the receptor, which led us to synthesize a number of derivatives. The most potent compound of this terphenyl series, 24 (LUF5771), was able to increase the dissociation rate of [(3)H]Org 43553 by 3.3-fold (at 10 muM). In a functional assay, the presence of 24 resulted in a 2- to 3-fold lower potency of both Org 43553 and LH. Thus, the compounds presented in this paper are the first LMW ligands that allosterically inhibit the LH receptor.
(PMID: 19296599)
Comment
Compounds with activity <= 50uM or explicitly reported as active by ChEMBL are flagged as active in this PubChem assay presentation.

Categorized Comment
ChEMBL Assay Type: Binding

ChEMBL Assay Data Source: Scientific Literature

ChEMBL Target ID: 95

ChEMBL Target Type: Target is a single protein chain

Result Definitions
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TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1IC50*IC50 PubChem standard valueFloatμM
2BEIBinding Efficiency Index(nM)Float
3SEISurface Efficiency Index(nM)Float
4LELigand EfficiencyFloat
5LLELipophilic Ligand EfficiencyFloat
6Activity activity commentActivity activity commentString
7Activity standard flagActivity standard flagInteger
8Activity qualifierActivity qualifierString
9Activity published valueActivity published valueFloat
10Activity standard valueActivity standard valueFloat
11Activity binding domainsActivity binding domainsString
12IC50 activity commentIC50 activity commentString
13IC50 standard flagIC50 standard flagInteger
14IC50 qualifierIC50 qualifierString
15IC50 published valueIC50 published valueFloatμM
16IC50 standard valueIC50 standard valueFloatnM
17IC50 binding domainsIC50 binding domainsString

* Activity Concentration.

Data Table (Concise)
Classification
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