Integration and Intersection of Cancer Metabolism with Epigenetic Pathways in Gliomas

Area of Science:

• Neuro-oncology
• Cancer Metabolism
• Epigenetics

Background:

• Metabolomics and epigenetics are critical in glioma development, influencing chromatin structure.
• Metabolic pathways like glycolysis and the TCA cycle regulate epigenetic modifications, including methylation and acetylation.
• Both adult and pediatric gliomas exploit these metabolic-epigenetic interactions for tumor growth.

Purpose of the Study:

• To elucidate the interplay between cancer metabolism and epigenetic regulation in gliomas.
• To identify how metabolic alterations drive glioma progression in different age groups.
• To explore therapeutic strategies targeting these metabolic-epigenetic pathways.

Main Methods:

• Review of current literature on glioma metabolism and epigenetics.
• Analysis of metabolic pathways involved in epigenetic modifications (e.g., S-adenosyl methionine, α-ketoglutarate).
• Examination of specific glioma subtypes (IDH-wild-type, IDH-mutant, pediatric gliomas) and their metabolic rewiring.

Main Results:

• Metabolic cues shape chromatin through epigenetic modifications like methylation and acetylation.
• IDH-wild-type gliomas upregulate glycolysis, while IDH-mutant gliomas produce D-2HG, leading to hypermethylation.
• Pediatric gliomas exhibit distinct metabolic rewiring to control chromatin states.

Conclusions:

• The crosstalk between metabolism and epigenetics is fundamental to glioma biology.
• Targeting metabolic pathways offers promising therapeutic avenues for gliomas.
• Drugs like vorasidenib, ONC201, and metformin show potential in suppressing oncogenic chromatin states.