PXD052868 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Mice lacking Astn2 have ASD-like behaviors and altered cerebellar circuit properties |
Description | Astrotactin 2 (ASTN2) is a transmembrane neuronal protein highly expressed in the cerebellum that functions in receptor trafficking and modulates cerebellar Purkinje cell (PC) synaptic activity. Individuals with ASTN2 mutations exhibit neurodevelopmental disorders, including autism spectrum disorder (ASD), ADHD, learning difficulties and language delay. To provide a genetic model for the role of the cerebellum in ASD-related behaviors and study the role of ASTN2 in cerebellar circuit function, we generated global and PC-specific conditional Astn2 knockout (KO and cKO, respectively) mouse lines. Astn2 KO mice exhibited strong ASD-related behavioral phenotypes, including a marked decrease in separation-induced pup ultrasonic vocalization calls, hyperactivity, and repetitive behaviors, altered behavior in the three-chamber test, and impaired cerebellar-dependent eyeblink conditioning. Hyperactivity and repetitive behaviors were also prominent in Astn2 cKO animals but they did not show altered behavior in the three-chamber test. By Golgi staining, Astn2 KO PCs had region-specific changes in dendritic spine density and filopodia numbers. Proteomic analysis of Astn2 KO cerebellum revealed a marked upregulation of ASTN2 family member, ASTN1, a neuron-glial adhesion protein. Immunohistochemistry and electron microscopy demonstrated a significant increase in Bergmann glia volume in the molecular layer of Astn2 KO animals. Electrophysiological experiments indicated a reduced frequency of spontaneous excitatory postsynaptic currents (EPSCs), as well as increased amplitudes of both spontaneous EPSCs and inhibitory postsynaptic currents (IPSCs) in the Astn2 KO animals, suggesting that pre- and postsynaptic components of synaptic transmission were altered. Thus, ASTN2 regulates ASD-like behaviors and cerebellar circuit properties. |
HostingRepository | PRIDE |
AnnounceDate | 2024-07-30 |
AnnouncementXML | Submission_2024-07-30_08:21:35.458.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | henrik molina |
SpeciesList | scientific name: Mus musculus (Mouse); NCBI TaxID: 10090; |
ModificationList | No PTMs are included in the dataset |
Instrument | Orbitrap Fusion Lumos |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2024-06-05 12:25:51 | ID requested | |
⏵ 1 | 2024-07-30 08:21:35 | announced | |
2 | 2024-10-22 06:51:48 | announced | 2024-10-22: Updated project metadata. |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: ASTN2, Purkinje cell, neurodevelopmental disorder, Cerebellum,Autism Spectrum Disorder |
Contact List
Mary E. Hatten |
contact affiliation | The Rockefeller University |
contact email | hatten@rockefeller.edu |
lab head | |
henrik molina |
contact affiliation | THE ROCKEFELLER UNIVERSITY |
contact email | henrik.molina@gmail.com |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD052868
- Label: PRIDE project
- Name: Mice lacking Astn2 have ASD-like behaviors and altered cerebellar circuit properties