Biological Information

Background Information:

There are three known subtypes of b-adrenergic receptors, b1, b2, and b3, all of which are thought to couple primarily via Gsa to adenylyl cylase, leading to an increase in cAMP. The receptor subtypes differ primarily in their location: b1-adrenoceptors predominate in the heart, cerebral cortex, and the kidney. The major subtype in the lungs, cerebellum, uterus, skeletal muscle, and blood vessels is the b2-adrenoceptor. The b3-adrenoceptor has been detected in brain, stomach, and gall bladder but are expressed predominantly in white and brown adipose tissue (WAT and BAT, respectively). b2 adrenoceptors are mainly associated with causing relaxation of smooth muscle in a variety of tissues. Adrenergic b2 receptor agonism have been found useful in the treatment of bronchospasm but may facilitate cardiac arrest. Adrenergic b2 receptor antagonism may facilitate bronchospasm and impair exercise stress cardiovascular performance.

No. of Assays on Panel:

2

Assays on Panel:

Family

GPCR

Name

Item

302150-0

Protein

beta2

Organism

Human

Assay Sub Type

Cell Based

Family

GPCR

Name

Item

302150-1

Protein

beta2

Organism

Human

Assay Sub Type

Cell Based

Family:

GPCR

Sub Family:

Adrenoceptor

Class:

Class A

Protein Name:

beta2

Uniprot Number:

P07550

Protein Aliases:

Beta-2 adrenoceptor

Gene Name:

ADRB2

Gene ID:

154

Gene Aliases:

ADRBR|BAR|B2AR

Accession Number:

NM_000024

Organism:

Human

Construct Details:

Full Length, Recombinant

Cell Type:

CHO-K1

Assay Information

Assay Type:

Functional

Assay Sub Type:

Cell Based

Functional Mode:

Agonist & Antagonist

Detection Method:

TR-FRET

Measured Response:

Fluorescence

Testing Information

Procedure Summary:

Human adrenergic b2 receptors expressed in CHO cells are used. Test compound and/or vehicle is incubated with the cells (2.5 x 10^5 cell/ml) in modified HBSS pH 7.4 buffer for 20 minutes at 37°C. The reaction is evaluated for cAMP levels by TR-FRET. Test compound-induced cAMP increase by 50 percent or more (≥50%) relative to the 0.3 µM procaterol control response indicates possible adrenergic b2 receptor agonist activity. Test compound-induced inhibition of the 0.01 µM procaterol-induced cAMP response by 50 percent or more (≥50%) indicates receptor antagonist activity. These same concentrations are concurrently applied to a separate group of treated cells and evaluated for possible compound-induced cytotoxicity only if significant inhibition of cAMP release is observed (Cat. #302170).

Incubation:

20 min at 37°C

Control Inhibitor:

ICI-118,551

Control Activator:

PROCATEROL

Criteria For Significance:

≥50% Increase in cAMP relative to procaterol response, ≥50% Inhibition of procaterol-induced cAMP increase

Test Concentration / Dose:

Compounds are screened at 10, 3, 1, 0.3, 0.1, 0.03, 0.01 and 0.003 μM

Test Sample Requirements:

75 μl of 10 mM stock or 1 mg (pre-weighed) powder (assuming FW ≦500 and purity 100%)

Minimum Order Quantity:

16

Turnaround Time

Standard:

20 Business Days

Reference Compound Data

PubChem ID

688561

Name

PROCATEROL

Measurement

0.0027μM - EC50

PubChem ID

Name

ICI-118,551

Measurement

0.00028μM - IC50

Clinical Relevance

Therapeutic Area:

Pulmonology

Additional Information

Brand:

LeadHunter

Testing Location:

Taiwan - Taipei

RELATED SOLUTIONS

Item: 302150-0
Item: 302150-1
Item: 204110