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Updated: Jun 14, 2026
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Strategies for Assessing Autistic-Like Behaviors in Mice
Published on: September 20, 2024
Ca(2+)-dependent activator protein for secretion 2 and autistic-like phenotypes
Tetsushi Sadakata1, Teiichi Furuichi
1Laboratory for Molecular Neurogenesis, RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan. sadakata@brain.riken.jp
Neuroscience Research
|March 23, 2010
Summary
Ca(2+)-dependent activator protein for secretion 2 (CAPS2) deficiency in mice impairs neuronal development and causes autism-like behaviors, suggesting CAPS2
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Ca(2+)-dependent activator protein for secretion 2 (CAPS2) is crucial for dense-core vesicle (DCV) exocytosis.
- CAPS2 plays a role in the secretion of neurotrophic factors essential for neuronal development and survival.
Purpose of the Study:
- To investigate the role of CAPS2 in neuronal development, survival, and behavior.
- To explore the potential link between CAPS2 dysfunction and autism susceptibility.
Main Methods:
- Generation and analysis of CAPS2 knockout (KO) mice.
- Assessment of neurotrophic factor secretion (BDNF, NT-3).
- Behavioral testing in CAPS2 KO mice (social interaction, activity, sleep, anxiety).
- Analysis of CAPS2 splice variants and single nucleotide polymorphisms (SNPs) in autism patients.
Main Results:
- CAPS2 KO mice exhibit deficits in neuronal development and survival.
- CAPS2 KO mice display abnormal behaviors including impaired social interaction, hyperactivity, disrupted sleep-wake rhythms, and increased anxiety.
- A rare CAPS2 splice variant lacking exon 3, which is not axonally transported, is overexpressed in autism patients; non-synonymous SNPs in CAPS2 are also found in some autistic individuals.
Conclusions:
- CAPS2 is implicated in autism susceptibility due to its role in neurodevelopment and behavior.
- CAPS2 KO mice serve as a valuable model for studying the neuropathology and behavioral characteristics of neurodevelopmental disorders, particularly autism.
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