GEO series
GTP Cyclohydrolase I Confers Metabolic Protection Against Lipid Peroxidation in Glioblastoma
GSE251878
Homo sapiens
Expression profiling by high throughput sequencing
12 samples
2024/12/01
GPL16791
Summary
Guanosine triphosphate cyclohydrolase I (GCH1) was previously identified as a regulator of reactive oxygen species (ROS) in brain tumor initiating cells (BTICs). Elucidating the GCH1/Tetrahydrobiopterin (BH4) pathway in BTICs has unveiled the necessity for GCH1 to protect BTICs from lipid peroxidation. Within this study, we observed differences in lipid pathways and lipid metabolites during GCH1 modulation. Alteration to polyunsaturated fatty acids (PUFAs), a species of oxidatively vulnerable lipids, were altered during GCH1 knockdown. Pharmacological inhibition of BH4 with drugs known to cross the blood brain barrier (sulfasalazine and pyrimethamine) successfully reduced growth in GCH1 overexpressed BTICs, induced lipid peroxidation.
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