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BioAssay: AID 699349

Inhibition of lysosomal alpha-glucosidase in human fibroblast at 5 uM after 24 hrs

Amino-myo-inositol derivatives have been found to be potent inhibitors of glucocerebrosidase (GCase), the beta-glucosidase enzyme deficient in Gaucher disease (GD). When tested using lymphoblasts derived from patients with GD homozygous for N370S or L444P mutations, the compounds enhanced GCase activity at very low concentrations. The most potent inhibitor, more ..
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 Tested Compounds
 Tested Compounds
All(3)
 
 
Inactive(1)
 
 
Unspecified(2)
 
 
 Tested Substances
 Tested Substances
All(3)
 
 
Inactive(1)
 
 
Unspecified(2)
 
 
 Related BioAssays
 Related BioAssays
AID: 699349
Data Source: ChEMBL (860093)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2013-06-29
Modify Date: 2014-05-25

Data Table ( Complete ):           All
Target
Sequence: RecName: Full=Lysosomal alpha-glucosidase; AltName: Full=Acid maltase; AltName: Full=Aglucosidase alfa; Contains: RecName: Full=76 kDa lysosomal alpha-glucosidase; Contains: RecName: Full=70 kDa lysosomal alpha-glucosidase; Flags: Precursor
Description ..   
Protein Family: GH31_MGAM_SI_GAA
Comment ..   

Gene:GAA     Related Protein 3D Structures     More BioActivity Data..
Tested Compounds:
Description:
Title: Potent aminocyclitol glucocerebrosidase inhibitors are subnanomolar pharmacological chaperones for treating gaucher disease.

Abstract: Amino-myo-inositol derivatives have been found to be potent inhibitors of glucocerebrosidase (GCase), the beta-glucosidase enzyme deficient in Gaucher disease (GD). When tested using lymphoblasts derived from patients with GD homozygous for N370S or L444P mutations, the compounds enhanced GCase activity at very low concentrations. The most potent inhibitor, (1R,2S,3R,4S,5S,6R)-5-(nonylamino)-6-(nonyloxy)cyclohexane-1,2,3,4-tetraol had a K(i) of 1 nM using isolated enzyme and an IC(50) of 4.3 nM when assayed in human fibroblast cell culture. This aminocyclitol produced maximum increases of GCase activities of 90% in N370S lymphoblasts at 1 nM and 40% in L444P at 0.01 nM following a three-day incubation. In addition to inhibitory potency, this compound has the permeability, subcellular distribution, and cell metabolism characteristics that are important for use as a pharmacological chaperone. It is a remarkable finding that picomolar concentrations of aminocyclitols are sufficient to enhance activity in the L444P variant, which produces a severe neuronopathic form of GD without clinical treatment.
(PMID: 22512696)
Categorized Comment
Assay Type: Binding

Assay Data Source: Scientific Literature

BAO: Assay Format: biochemical format

Target Type: Target is a single protein chain

Protein Target Class: enzyme hydrolase

Result Definitions
TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1Inhibition activity commentInhibition activity commentString
2Inhibition standard flagInhibition standard flagInteger
3Inhibition qualifierInhibition qualifierString
4Inhibition published valueInhibition published valueFloat%
5Inhibition standard valueInhibition standard valueFloat%

Data Table (Concise)
Classification
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