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Relevance to Autism

Genetic association has been found between the ADORA2A gene and autism in a Caucasian sample (Freitag et al., 2010).

Molecular Function

The encoded protein is a receptor subtypes for adenosine

External Links

       

References

Type
Title
Type of Disorder
Associated Disorders
Author, Year
Primary
Adenosine A(2A) receptor gene (ADORA2A) variants may increase autistic symptoms and anxiety in autism spectrum disorder.
ASD
22q11.2 deletion syndrome
Highly Cited
Aggressiveness, hypoalgesia and high blood pressure in mice lacking the adenosine A2a receptor.
Highly Cited
Evidence for functionally important adenosine A2a receptors in the rat hippocampus.
Recent Recommendation
The A2A adenosine receptor rescues the urea cycle deficiency of Huntington\'s disease by enhancing the activity of the ubiquitin-proteasome system.
Recent Recommendation
FGF acts as a co-transmitter through adenosine A(2A) receptor to regulate synaptic plasticity.
Recent Recommendation
The 2.6 angstrom crystal structure of a human A2A adenosine receptor bound to an antagonist.
Recent Recommendation
Adenosine A2A receptors are essential for long-term potentiation of NMDA-EPSCs at hippocampal mossy fiber synapses.

Rare

No Rare Variants Available

Common

Variant ID
Polymorphism
SNP ID
Allele Change
Residue Change
Population Origin
Population Stage
Author, Year
 GEN003C001 
 Substitution 
 rs2298383 
 C to T 
 N/A 
 Caucasian 
 Discovery 
 GEN003C002 
 Substitution 
 rs2236624 
 C to T 
 N/A 
 Caucasian 
 Discovery 



Model Summary

A2A receptors play a prominent role in the development of ischemic injury within brain and demonstrate the potential for anatomical and functional neuroprotection against stroke by A2A receptor antagonists.

External Links

AllenBrainAtlas   MGI Logo  Entrez Gene

References

Type
Title
Author, Year
Primary
A(2A) adenosine receptor deficiency attenuates brain injury induced by transient focal ischemia in mice.
Additional
A crucial role for forebrain adenosine A(2A) receptors in amphetamine sensitization.

ADORA2A_1_KO_HM

Model Type: Genetic
Model Genotype: Homozygous
Mutation: Gene targeting vector disrupting a critical stretch of nucleotides at the junction of exon 2 and it's 3' intron
Allele Type: Targeted (Knock Out)
Strain of Origin: C57BL/6
Genetic Background: C57BL/6, 129/SvEvTac
ES Cell Line: 129/SvJae
Mutant ES Cell Line: Not Specified
Model Source: Not Specified

ADORA2A_2_CN_KO_HM

Model Type: Genetic
Model Genotype: Homozygous
Mutation: Forebrain specific Cre-loxP mediated deletion of introns flanking critical exon 2 of Adora2a gene
Allele Type: Conditional (Knock Out)
Strain of Origin: Not Specified
Genetic Background: 129-Steel, C57B1/6
ES Cell Line: L7ag13
Mutant ES Cell Line: Not Specified
Model Source: Not Specified

ADORA2A_1_KO_HM

Category
Entity
Quantity
Experimental Paradigm
Age at Testing
Developmental Trajectory1
Decreased
Description: Decreased signs of neurological deficit after MCA occlusion
Exp Paradigm: Neurological deficit scoring
 Neurological deficit scoring
 Unreported
Total and regional infarction1
Decreased
Description: Decreased total infarct value; Decreased ischemic lesion volume; Decreased infarctions in cereberal cortex and striatum
Exp Paradigm: Hematoxylin and eosin (H&E) staining with volumetric analysis; Staining of sections with TTC, a marker of intact cellular metabolism
 H&E Staining
 Unreported
A2A receptor expression1
Decreased
Description: Decreased A2A receptor expression demonstrated by lack of binding of agonist 3H-CGS 21680
Exp Paradigm: Receptor Autoradiography with agonist 3H-CGS 21680 in striatum and olfactory bulb
 Autoradiographic analysis
 Unreported
Cardiovascular System1
 No Change
 BP and HR measurements
 Unreported
General Characteristics1
 No Change
 General Observation
 Unreported
Size/ Growth1
 No Change
 General Observation
 Unreported
Homeostasis1
 No Change
 pH/Blood Gas Analyzer and thermometer
 Unreported
General Locomotor Activity1
 No Change
 Open Field test
 Unreported
Brain Morphology1
 No Change
 Immunohistochemical analysis
 Unreported
 Not Reported: Circadian sleep/wake cycle ,   Communications ,   Emotion ,   Immune Response ,   Learning & memory ,   Maternal behavior ,   Neurophysiology ,   Repetitive behavior ,   Seizure ,   Sensory ,   Social behavior ,  

ADORA2A_2_CN_KO_HM

Category
Entity
Quantity
Experimental Paradigm
Age at Testing
A2A receptor expression1
Decreased
Description: Decreased binding of receptor to characteristic ligand in striatum
Exp Paradigm: Receptor Autoradiography with agonist 3H-CGS 21680 in striatum
 Receptor Autoradiography with agonist 3H-CGS 21680 in striatum
 Unreported
A2A receptor gene expression1
Decreased
Description: Decreased A2A receptor gene expression in frontal cortex and striatum
Exp Paradigm: Polymerase Chain Reaction
 Polymerase Chain Reaction
 Unreported
General Locomotor Activity1
Decreased
Description: Decreased sensitization of locomotor activity
Exp Paradigm: Open Field test after daily administration of amphetamine (2.5 mg/kg) and SCH58261 (0.03 mg/kg, ip) or KW-6002 (0.03 mg/kg, ip)
 Modified Open Field Test
 Unreported
General Locomotor Activity1
Decreased
Description: Decreased locomotor activity in response to selective A2A antagonist
Exp Paradigm: Open Field test after administration of antagonist KW-6002 (3 mg/kg, i.p.)
 Modified Open Field Test
 Unreported
 Not Reported: Circadian sleep/wake cycle ,   Communications ,   Developmental profile ,   Emotion ,   Homeostasis ,   Immune Response ,   Learning & memory ,   Maternal behavior ,   Neuroanatomy / Ultrastructure / Cytoarchitecture ,   Neurophysiology ,   Repetitive behavior ,   Seizure ,   Sensory ,   Social behavior ,  




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