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BioAssay: AID 699425

Inhibition of human recombinant CatS assessed as suppression of enzyme-mediated Z-Val-Val-Arg-AMC cleavage by QFRET assay

Directed screening of nitrile compounds revealed 3 as a highly potent cathepsin K inhibitor but with cathepsin S activity and very poor stability to microsomes. Synthesis of compounds with reduced molecular complexity, such as 7, revealed key SAR and demonstrated that baseline physical properties and in vitro stability were in fact excellent for this series. The tricycle carboline P3 unit was more ..
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 Tested Compounds
 Tested Compounds
All(36)
 
 
Active(9)
 
 
Inconclusive(1)
 
 
Unspecified(26)
 
 
 Tested Substances
 Tested Substances
All(36)
 
 
Active(9)
 
 
Inconclusive(1)
 
 
Unspecified(26)
 
 
 Related BioAssays
 Related BioAssays
AID: 699425
Data Source: ChEMBL (860169)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2013-06-29
Modify Date: 2013-11-18

Data Table ( Complete ):           Active    All
Target
Sequence: RecName: Full=Cathepsin S; Flags: Precursor
Description ..   
Protein Family: Peptidase_C1A
Comment ..   

Gene:CTSS          More BioActivity Data..
BioActive Compounds: 9
Description:
Title: (1R,2R)-N-(1-cyanocyclopropyl)-2-(6-methoxy-1,3,4,5-tetrahydropyrido[4,3-b]indole-2-carbonyl)cyclohexanecarboxamide (AZD4996): a potent and highly selective cathepsin K inhibitor for the treatment of osteoarthritis.

Abstract: Directed screening of nitrile compounds revealed 3 as a highly potent cathepsin K inhibitor but with cathepsin S activity and very poor stability to microsomes. Synthesis of compounds with reduced molecular complexity, such as 7, revealed key SAR and demonstrated that baseline physical properties and in vitro stability were in fact excellent for this series. The tricycle carboline P3 unit was discovered by hypothesis-based design using existing structural information. Optimization using small substituents, knowledge from matched molecular pairs, and control of lipophilicity yielded compounds very close to the desired profile, of which 34 (AZD4996) was selected on the basis of pharmacokinetic profile.
(PMID: 22742641)
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: 11534

ChEMBL Target Type: Target is a single protein chain

Result Definitions
Show more
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
6IC50 activity commentIC50 activity commentString
7IC50 standard flagIC50 standard flagInteger
8IC50 qualifierIC50 qualifierString
9IC50 published valueIC50 published valueFloatμM
10IC50 standard valueIC50 standard valueFloatnM
11IC50 binding domainsIC50 binding domainsString

* Activity Concentration.

Data Table (Concise)
Classification
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