PXD029393

PXD029393 is an original dataset announced via ProteomeXchange.

Title	Chaperone-mediated autophagy maintains glioma stem cell activity controlling different proteomic and transcriptomic pathways (U251)
Description	Chaperone-mediated autophagy (CMA) is a homeostatic process essential for the lysosomal degradation of individual proteins. CMA activity directly depends on the levels of LAMP2A, critical receptor at the lysosomal membrane, to which CMA substrate proteins are bound. In glioblastoma (GBM), the most common and aggressive brain cancer in the adulthood, high levels of LAMP2A have been linked to TMZ resistance and tumor-associated pericytes. However, the implication of LAMP2A, and hence CMA, in glioblastoma stem cells (GSCs) remains unknown. In this work, we show that LAMP2A expression is enriched in patient-derived GSC population and its knock-down diminishes GSCs tumorigenic activities. Proteomic and transcriptomic analysis of LAMP2A knocked-down GSCs revealed reduced extracellular matrix (ECM) interaction effectors in both analyses. Moreover, immune system and mitochondrial metabolism related pathways were remarkably deregulated at proteome level, whereas PI3K-AKT and p53 pathways were altered in RNAseq study. Moreover, clinical samples of GBM tissue presented overexpression of LAMP2 and its high levels correlated with advanced glioma grade and poor overall survival. In conclusion, we identified a novel role of CMA directly regulating GSCs activity via multiple pathways at proteome and transcriptome level.
HostingRepository	PRIDE
AnnounceDate	2023-11-14
AnnouncementXML	Submission_2023-11-14_08:54:13.347.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Mikel Azkargorta
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	timsTOF Pro

Revision	Datetime	Status	ChangeLog Entry
0	2021-10-28 01:54:19	ID requested
1	2022-08-02 08:24:16	announced
⏵ 2	2023-11-14 08:54:13	announced	2023-11-14: Updated project metadata.

Dataset with its publication pending

submitter keyword: glioblastoma,Chaperone-mediated autophagy, LAMP2A, label free

Félix Elortza
contact affiliation	Proteomics Service CIC bioGUNE Bizkaia Tech. Park Build. 800 Derio 48160 Spain
contact email	felortza@cicbiogune.es
lab head
Mikel Azkargorta
contact affiliation	Proteomics Platform CIC bioGUNE
contact email	mazkargorta@cicbiogune.es
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/2022/08/PXD029393

PRIDE project URI

• PRIDE
  1. PXD029393
     1. Label: PRIDE project
     2. Name: Chaperone-mediated autophagy maintains glioma stem cell activity controlling different proteomic and transcriptomic pathways (U251)