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PXD052868-1

PXD052868 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleMice lacking Astn2 have ASD-like behaviors and altered cerebellar circuit properties
DescriptionAstrotactin 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.
HostingRepositoryPRIDE
AnnounceDate2024-07-30
AnnouncementXMLSubmission_2024-07-30_08:21:35.458.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterhenrik molina
SpeciesList scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationListNo PTMs are included in the dataset
InstrumentOrbitrap Fusion Lumos
Dataset History
RevisionDatetimeStatusChangeLog Entry
02024-06-05 12:25:51ID requested
12024-07-30 08:21:35announced
22024-10-22 06:51:48announced2024-10-22: 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 affiliationThe Rockefeller University
contact emailhatten@rockefeller.edu
lab head
henrik molina
contact affiliationTHE ROCKEFELLER UNIVERSITY
contact emailhenrik.molina@gmail.com
dataset submitter
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Dataset FTP location
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