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BioAssay: AID 746452

Positive allosteric modulation of human muscarinic M5 receptor

This Letter describes the further chemical optimization of the M5 PAM MLPCN probes ML129 and ML172. A multi-dimensional iterative parallel synthesis effort quickly explored isatin replacements and a number of southern heterobiaryl variations with no improvement over ML129 and ML172. An HTS campaign identified several weak M5 PAMs (M5 EC50 >10muM) with a structurally related isatin core that more ..
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 Tested Compounds
 Tested Compounds
All(11)
 
 
Active(11)
 
 
 Tested Substances
 Tested Substances
All(11)
 
 
Active(11)
 
 
AID: 746452
Data Source: ChEMBL (960040)
BioAssay Type: Confirmatory, Concentration-Response Relationship Observed
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2014-05-03
Modify Date: 2014-08-23

Data Table ( Complete ):           View Active Data    View All Data
Target
Sequence: RecName: Full=Muscarinic acetylcholine receptor M5
Description ..   
Protein Family: Olfactory receptor
Comment ..   

Gene:CHRM5     Related Protein 3D Structures     More BioActivity Data..
BioActive Compounds: 11
Description:
Title: Discovery of ML326: The first sub-micromolar, selective M5 PAM.

Abstract: This Letter describes the further chemical optimization of the M5 PAM MLPCN probes ML129 and ML172. A multi-dimensional iterative parallel synthesis effort quickly explored isatin replacements and a number of southern heterobiaryl variations with no improvement over ML129 and ML172. An HTS campaign identified several weak M5 PAMs (M5 EC50 >10muM) with a structurally related isatin core that possessed a southern phenethyl ether linkage. While SAR within the HTS series was very shallow and unable to be optimized, grafting the phenethyl ether linkage onto the ML129/ML172 cores led to the first sub-micromolar M5 PAM, ML326 (VU0467903), (human and rat M5 EC50s of 409nM and 500nM, respectively) with excellent mAChR selectivity (M1-M4 EC50s >30muM) and a robust 20-fold leftward shift of the ACh CRC.
(PMID: 23562060)
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: Binding
Target Type: Target is a single protein chain
Assay Data Source: Scientific Literature
Result Definitions
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TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1EC50*EC50 PubChem standard valueFloatμM
3BEIBinding Efficiency Index(nM)Float
2SEISurface Efficiency Index(nM)Float
4LELigand EfficiencyFloat
5LLELipophilic Ligand EfficiencyFloat
6EC50 activity commentEC50 activity commentString
7EC50 standard flagEC50 standard flagInteger
8EC50 qualifierEC50 qualifierString
9EC50 published valueEC50 published valueFloat
10EC50 standard valueEC50 standard valueFloatnM
11EC50 activity commentEC50 activity commentString
12EC50 standard flagEC50 standard flagInteger
13EC50 qualifierEC50 qualifierString
14EC50 published valueEC50 published valueFloatμM
15EC50 standard valueEC50 standard valueFloatnM

* Activity Concentration.

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