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BioAssay: AID 199974

Percent transcriptional activation relative to 9-cis RA in CV-1 cells expressing Retinoid X receptor RXR gamma

Three heteroarotinoids containing a nitrogen atom in the first ring and a C-O linking group between the two aryl rings were synthesized and evaluated for RAR and RXR retinoid receptor transactivation, tumor cell growth inhibition, and transglutaminase (TGase) induction. Ethyl 4-(N,4,4-trimethyl-1,2,3,4-tetrahydroquinolinyl)benzoate (1) contained an N-CH(3) group and activated all retinoid more ..
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 Tested Compounds
 Tested Compounds
All(3)
 
 
Unspecified(3)
 
 
 Tested Substances
 Tested Substances
All(3)
 
 
Unspecified(3)
 
 
 Related BioAssays
 Related BioAssays
AID: 199974
Data Source: ChEMBL (197248)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2010-05-24
Modify Date: 2014-08-23

Data Table ( Complete ):           View All Data
Target
Sequence: RecName: Full=Retinoic acid receptor RXR-gamma; AltName: Full=Nuclear receptor subfamily 2 group B member 3; AltName: Full=Retinoid X receptor gamma
Description ..   
Protein Family: The ligand binding domain of the retinoid X receptor and Ultraspiracle, members of nuclear receptor superfamily
Comment ..   

Gene:RXRG     Related Protein 3D Structures     More BioActivity Data..
Tested Compounds:
Description:
Title: Synthesis, structure-activity relationships, and RARgamma-ligand interactions of nitrogen heteroarotinoids.

Abstract: Three heteroarotinoids containing a nitrogen atom in the first ring and a C-O linking group between the two aryl rings were synthesized and evaluated for RAR and RXR retinoid receptor transactivation, tumor cell growth inhibition, and transglutaminase (TGase) induction. Ethyl 4-(N,4,4-trimethyl-1,2,3,4-tetrahydroquinolinyl)benzoate (1) contained an N-CH(3) group and activated all retinoid receptors except for RARgamma. Inceasing the hydrophobicity around the rings with analogues ethyl 4-(N,4,4,7-tetramethyl-1,2,3, 4-tetrahydroquinolin-6-oyloxy)benzoate (2) [7-methyl group added] and ethyl 4-(4,4-dimethyl-N-isopropyl-1,2,3, 4-tetrahydroquinolin-6-oyloxy)benzoate (3) [NCH(CH(3))(2) group at C-4] increased the potency and specificity for RARalpha, RARbeta, and RXRalpha, compared to 1, but had little effect on RXRbeta and RXRgamma activation. Although 1 and 3 were unable to activate RARgamma, 2 did activate this receptor with efficacy and high potency equal to that of 9-cis-retinoic acid (9-c-RA). All three heteroarotinoids exhibited 5-8-fold greater specificities for RARbeta over RARalpha. In addition, esters 1-3 inhibited the growth of two cell lines each derived from cervix, vulvar, ovarian, and head/neck tumors with similar efficiencies to that of 9-c-RA through a mechanism independent of apoptosis. The vulvar cell lines were the most sensitive, and the ovarian lines were the least sensitive. Ester 2 was similar to 1 and 3 except that 2 was a much more potent growth inhibitor of the two vulvar cell lines, which is consistent with strong RARgamma activation by 2 (but not by 1 and 3) and the high levels of RARgamma expression in skin. All three heteroarotinoids induced production of TGase, a marker of retinoid activity in human erythroleukemic cells. Esters 2 and 3 were the more potent TGase activators than 1, in agreement with the stronger activation of the RAR receptors by 2 and 3. The biological activities of these agents, and the RARgamma potency of 2 in particular, demonstrate the promise of these compounds as pharmaceutics for cancer and skin disorders.
(PMID: 10479291)
Categorized Comment
Assay Type: Functional

Assay Data Source: Scientific Literature

BAO: Assay Format: cell-based format

Assay Cell Type: CV-1

Target Type: Target is a single protein chain

Result Definitions
TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1Efficacy activity commentEfficacy activity commentString
2Efficacy standard flagEfficacy standard flagInteger
3Efficacy qualifierEfficacy qualifierString
4Efficacy published valueEfficacy published valueFloat%
5Efficacy standard valueEfficacy standard valueFloat%

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