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BioAssay: AID 644928

Agonist activity at human ERalpha expressed in HEC-1 cells coexpressing beta-gal assessed as luciferase activity after 24 hrs by reporter gene assay

Two estrogen receptor (ER) subtypes, ERalpha and ERbeta, mediate the actions of estrogens in diverse reproductive and nonreproductive target tissues. ER subtype-selective ligands, which bind to and activate these subtypes differentially, have proved to be useful in elucidating which actions of estrogens proceed through ERalpha vs ERbeta. Some of these ligands show potential as novel therapeutic more ..
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 Tested Compounds
 Tested Compounds
All(4)
 
 
Active(4)
 
 
 Tested Substances
 Tested Substances
All(4)
 
 
Active(4)
 
 
AID: 644928
Data Source: ChEMBL (802376)
BioAssay Type: Confirmatory, Concentration-Response Relationship Observed
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2012-09-09
Modify Date: 2014-08-24

Data Table ( Complete ):           View Active Data    View All Data
Target
Sequence: RecName: Full=Estrogen receptor; Short=ER; AltName: Full=ER-alpha; AltName: Full=Estradiol receptor; AltName: Full=Nuclear receptor subfamily 3 group A member 1
Description ..   
Protein Family: Ligand binding domain of Estrogen receptor, which are activated by the hormone 17beta-estradiol (estrogen)
Comment ..   

Gene:ESR1     Related Protein 3D Structures     More BioActivity Data..
BioActive Compounds: 4
Description:
Title: Diarylpropionitrile (DPN) enantiomers: synthesis and evaluation of estrogen receptor beta-selective ligands.

Abstract: Two estrogen receptor (ER) subtypes, ERalpha and ERbeta, mediate the actions of estrogens in diverse reproductive and nonreproductive target tissues. ER subtype-selective ligands, which bind to and activate these subtypes differentially, have proved to be useful in elucidating which actions of estrogens proceed through ERalpha vs ERbeta. Some of these ligands show potential as novel therapeutic agents. Diarylpropionitrile (DPN), an ERbeta selective ligand that we developed, is a chiral molecule, but it has been studied almost exclusively as the racemic mixture (rac-DPN, 1). Herein we report the development of an efficient enantioselective synthesis of the two isomers, R-DPN (3) and S-DPN (2), and we have compared the in vitro ligand binding affinities, coactivator binding affinities, recruitment potencies, and cellular transcriptional potencies of these isomers. Both enantiomers show a very high affinity and potency preference for ERbeta over ERalpha, typically in the range of 80-300-fold. Although the enantioselectivity is only modest (3-4-fold), the R-enantiomer is the higher affinity and more potent isomer. While ERbeta can be effectively and selectively stimulated by rac-DPN or by either R-DPN or S-DPN, R-DPN might be the preferred member of this isomeric series for biological studies of ERbeta function.
(PMID: 22122563)
Comment
Compounds with activity <= 50uM or explicitly reported as active by ChEMBL are flagged as active in this PubChem assay presentation.

Categorized Comment - additional comments and annotations
From BioAssay Depositor:
Assay Type: Functional
Target Type: Target is a single protein chain
Assay Data Source: Scientific Literature
BAO: Assay Format: cell-based format
Assay Cell Type: HEC-1
Result Definitions
TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1EC50*EC50 PubChem standard valueFloatμM
2EC50 activity commentEC50 activity commentString
3EC50 standard flagEC50 standard flagInteger
4EC50 qualifierEC50 qualifierString
5EC50 published valueEC50 published valueFloatnM
6EC50 standard valueEC50 standard valueFloatnM
7EC50 binding domainsEC50 binding domainsString

* Activity Concentration.

Data Table (Concise)
Data Table ( Complete ):     View Active Data    View All Data
Classification
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