Tumor-associated epilepsy and high expression of xCT shape the proteome of IDH-wildtype glioblastoma - PubMed
4 hours ago
- #Epilepsy
- #Proteomics
- #Glioblastoma
- The study focuses on tumor-associated epilepsy (GAE) and high expression of xCT in IDH-wildtype glioblastoma, analyzing amino acid transporters as therapeutic targets.
- Key transporters examined include xCT, CD98, EAAT2, and ASCT1, with emphasis on xCT due to available clinical inhibitors.
- Higher EAAT2 and ASCT1 levels were found in gliomas from patients with GAE, and xCT, EAAT2, and ASCT1 were upregulated in IDH-wildtype vs. IDH-mutant gliomas.
- Quantitative proteomics identified 214 proteins regulated in glioblastoma with GAE, enriched in neurotransmitter/amino acid turnover and lipid metabolism.
- High xCT expression in epilepsy group tumors showed distinct proteomic patterns, including 231 upregulated proteins related to myelination and synaptic plasticity.
- Survival analysis revealed that xCT expression and epilepsy did not impact patient survival in IDH-mutant or IDH-wildtype tumors.
- Findings highlight the role of amino acid transporters in GAE and suggest xCT's influence on the tumor proteome could guide targeted anti-seizure medication development.