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Relevance to Autism

Brinp1-deficient mice were shown to exhibit an increased density of parvalbumin-expressing interneurons, reduced social interaction, increased locomotor activity, and impairments in memory using two distinct knockout mouse models (Kobayashi et al., 2014; Berkowicz et al., 2016).

Molecular Function

Inhibits cell proliferation by negative regulation of the G1/S transition.

External Links

        

References

Type
Title
Type of Disorder
Associated Disorders
Author, Year
Primary
Absence of BRINP1 in mice causes increase of hippocampal neurogenesis and behavioral alterations relevant to human psychiatric disorders.
Support
Mutational Landscape of Autism Spectrum Disorder Brain Tissue
ASD
Recent Recommendation
Brinp1 (-/-) mice exhibit autism-like behaviour, altered memory, hyperactivity and increased parvalbumin-positive cortical interneuron density.
Variant ID
Variant Type
Allele Change
Residue Change
Inheritance Pattern
Inheritance Association
Family Type
Author, Year
 GEN820R001 
 synonymous_variant 
 c.354C>T 
 p.Ile118%3D 
 Unknown 
  
  
Chromosome
CNV Locus
CNV Type
# of studies
Animal Model
9
Duplication
 1
 
9
Deletion-Duplication
 30
 
9
Duplication
 1
 
9
Deletion
 1
 

Model Summary

Homozygous null mutant.

References

Type
Title
Author, Year
Primary
Brinp1 (-/-) mice exhibit autism-like behaviour, altered memory, hyperactivity and increased parvalbumin-positive cortical interneuron density.
Primary
Decreased parvalbumin and somatostatin neurons in medial prefrontal cortex in BRINP1-KO mice.
Model Type: Genetic
Model Genotype: Homozygous
Mutation: Brinp1 knock-out (Brinp1/) mice were generated by Cre-recombinase-mediated removal of the third exon of Brinp1; a targeting vector was constructed to alter the Brinp1 locus in mouse embryonic stem (ES) cells by homologous recombination; Cre-recombinase-mediated deletion of exon 3 was designed to generate a frame shift, resulting in a stop codon in the fourth exon of Brinp1; A correctly targeted clone was injected into BALB/c blastocysts to generate chimeric mice, which were crossed to C57BL/6 Cre deleter transgenic mice Tg(CMV-cre)1Cgn to remove exon 3 and the neomycin cassette from the targeted allele; The Cre transgenic strain induces deletion of loxP-flanked genes in all tissues, including germ cells; The cre gene in this strain is under the transcriptional control of a human cytomegalovirus minimal promoter and is likely to be expressed before implantation during early embryogenesis; It also appears that the cre gene is X-linked since transgene transmission through males is restricted to female offspring;.
Allele Type: Targeted (Knock Out)
Strain of Origin: BALB/c
Genetic Background: BALB/c x C57BL/6
ES Cell Line: Bruce 4 C57BL/6- derived embryonic stem (ES) cells
Mutant ES Cell Line:
Model Source:
Category
Entity
Quantity
Experimental Paradigm
Age at Testing
Hyperactivity1
Increased
 Novel cage test
 3-4 months
Neuronal number: interneurons1
Increased
 Immunohistochemistry
 Adult
Repetitive digging1
Increased
 Observation of repetitive behavior
 3-4 months
Stereotypy1
Increased
 Observation of repetitive behavior
 3-4 months
Self grooming: perseveration1
Decreased
 Splash test to evoke grooming behavior
 3-4 months
Rearing behavior1
Increased
 Three-chamber social approach test
 3-4 months
Rearing behavior1
Increased
 Home cage behavior
 3-4 months
Social approach1
Decreased
 Three-chamber social approach test
 3-4 months
Ultrasonic vocalization1
Decreased
 Monitoring ultrasonic vocalizations
 3-4 months
Size/growth1
Decreased
 Body weight measurement
 3 weeks - adult
Mortality/lethality1
Decreased
 Survival analysis
 P0
Developmental trajectory1
Decreased
 Developmental milestone measurements
 P1-p2
Exploratory activity1
Decreased
 Three-chamber social approach test
 3-4 months
Anxiety1
Decreased
 Elevated plus maze test
 3-4 months
Episodic-like memory1
Increased
 Morris water maze test
 3-4 months
Spatial working memory1
Decreased
 Y-maze test
 3-4 months
Nursing/lactation1
Decreased
 General observations
 P1-p2
Targeted expression1
Decreased
 Immunohistochemistry
 P12
Targeted expression1
Decreased
 Western blot
 P12
General characteristics1
 No change
 Macroscopic analysis
 E18.5, 7 weeks
Depression1
 No change
 Tail suspension test
 3-4 months
Exploratory activity1
 No change
 Novel object recognition test
 3-4 months
Cell proliferation1
 No change
 Immunohistochemistry
 E18.5
Motor coordination and balance1
 No change
 Accelerating rotarod test
 3-4 months
Brain anatomy1
 No change
 General observations
 Adult
Cortical lamination1
 No change
 Immunohistochemistry
 E12.5, e14.5, e16.5
Hippocampal morphology1
 No change
 Immunohistochemistry
 E12.5, e14.5, e16.5
Myelination1
 No change
 General observations
 Adult
Neuronal number1
 No change
 Immunohistochemistry
 Adult
Neuronal number: interneurons1
 No change
 Immunohistochemistry
 Adult
Apoptosis1
 No change
 Expression of cleaved caspase-3 (cc3)
 E18.5
Self grooming: perseveration1
 No change
 Splash test to evoke grooming behavior
 3-4 months
Hearing1
 No change
 Auditory test
 3-4 months
Olfaction1
 No change
 Response to olfactory stimuli
 3-4 months
Sensorimotor gating1
 No change
 Prepulse inhibition
 3-4 months
Vision1
 No change
 Ophthalmological evaluation
 3-4 months
 Not Reported: Circadian sleep/wake cycle, Immune response, Neurophysiology, Physiological parameters, Seizure

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