PXD030079-1

PXD030079 is an original dataset announced via ProteomeXchange.

Title	Autophagic vesicle content profiling from hippocampal slices LC-MSMS
Description	Previous work demonstrated that the developmental pruning of dendritic spines requires autophagy. This developmental process is facilitated by long-term depression (LTD)-like mechanisms, inviting the speculation that LTD, a fundamental form of plasticity, itself requires autophagy. Here, we show that LTD-inducing activation of NMDA receptors or metabotropic glutamate receptors triggers the rapid initiation of autophagy in postsynaptic dendrites. Dendritic autophagic vesicles (AVs) act in parallel with the endocytic machinery to remove AMPAR subunits from the surface and rapidly degrade them and their scaffold PSD95. Moreover, during NMDAR-LTD, key postsynaptic proteins are sequestered for autophagic degradation, as revealed by quantitative proteomic profiling of purified AVs. In turn, pharmacological inhibition of AV biogenesis, or conditional ablation of atg5 in pyramidal neurons abolishes LTD and instead triggers sustained potentiation in the hippocampus. These deficits in synaptic plasticity are recapitulated by knockdown of atg5 specifically in postsynaptic pyramidal neurons in the CA1 area. Conducive to the role of synaptic plasticity in behavioral flexibility, mice with autophagy deficiency in excitatory neurons exhibit altered response in reversal learning. Therefore, local assembly of the autophagic machinery in dendrites ensures the degradation of postsynaptic components and facilitates LTD expression.
HostingRepository	PRIDE
AnnounceDate	2022-01-10
AnnouncementXML	Submission_2022-01-10_06:41:34.819.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Frank Stein
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	No PTMs are included in the dataset
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2021-11-30 15:17:30	ID requested
⏵ 1	2022-01-10 06:41:35	announced
2	2024-10-22 05:30:48	announced	2024-10-22: Updated project metadata.

Dataset with its publication pending

submitter keyword: Autophagy, autophagosome, cargo, long-term depression, synaptic plasticity

Vassiliki Nikoletopoulou
contact affiliation	Department of Fundamental Neurosciences, University of Lausanne, Switzerland
contact email	Vassiliki.Nikoletopoulou@unil.ch
lab head
Frank Stein
contact affiliation	EMBL
contact email	frank.stein@embl.de
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2022/01/PXD030079

PRIDE project URI

• PRIDE
  1. PXD030079
     1. Label: PRIDE project
     2. Name: Autophagic vesicle content profiling from hippocampal slices LC-MSMS