PXD027069 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Chaperone-mediated autophagy maintains glioma stem cell activity controlling different proteomic and transcriptomic pathways |
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_08:38:37.763.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 |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2021-07-02 08:24:14 | ID requested | |
1 | 2023-03-10 23:40:28 | announced | |
⏵ 2 | 2023-11-14 08:38:38 | announced | 2023-11-14: Updated project metadata. |
Publication List
Auzmendi-Iriarte J, Otaegi-Ugartemendia M, Carrasco-Garcia E, Azkargorta M, Diaz A, Saenz-Anto, ñ, anzas A, Andermatten JA, Garcia-Puga M, Garcia I, Elua-Pinin A, Ruiz I, Sampron N, Elortza F, Cuervo AM, Matheu A, Chaperone-Mediated Autophagy Controls Proteomic and Transcriptomic Pathways to Maintain Glioma Stem Cell Activity. Cancer Res, 82(7):1283-1297(2022) [pubmed] |
Keyword List
submitter keyword: Chaperone-mediated autophagy (CMA), LAMP2A, glioblastoma stem cells (GSCs) |
Contact List
Felix Elortza |
contact affiliation | Protemics Service CIC bioGUNE Bizkaia Tech. Park Build. 800 48160 Derio (Spain) |
contact email | felortza@cicbiogune.es |
lab head | |
Mikel Azkargorta |
contact affiliation | Proteomics Platform CIC bioGUNE |
contact email | mazkargorta@cicbiogune.es |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD027069
- Label: PRIDE project
- Name: Chaperone-mediated autophagy maintains glioma stem cell activity controlling different proteomic and transcriptomic pathways