Proteomics

Dataset Information

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Phosphoproteome of glioblastoma cells after FG1059 treatment

ABSTRACT: We found that RPL22L1 isoform switch is regulated by SRSF4 protein and identified a small molecule compound FG1059, that inhibits this process and decreases tumor growth. To confirm that FG1059 affects RPL22L1 due to the inhibition of SRSF protein phosphorylation we studied the phosphoproteome of patient-derived GBM neurospheres treated with FG1059 for 0, 3, 6 and 12 hours.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Brain, Primary Cell, Cell Culture

DISEASE(S): Glioblastoma

SUBMITTER: Georgij Arapidi  

LAB HEAD: Georgij Arapidi

PROVIDER: PXD035855 | Pride | 2023-10-24

REPOSITORIES: Pride

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Publications

Glioblastoma (GBM) is characterized by exceptionally high intratumoral heterogeneity. However, the molecular mechanisms underlying the origin of different GBM cell populations remain unclear. Here, we found that the compositions of ribosomes of GBM cells in the tumour core and edge differ due to alternative RNA splicing. The acidic pH in the core switches before messenger RNA splicing of the ribosomal gene RPL22L1 towards the RPL22L1b isoform. This allows cells to survive acidosis, increases ste  ...[more]

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