The inventive subject matter relates to methods for treating glioblastoma, comprising administration of a composition comprising therapeutically effective amounts of supercritical extracts of rosemary, turmeric, oregano and ginger; and therapeutically effective amounts of hydroalcoholic extracts of holy basil, ginger, turmeric, Scutellaria baicalensis, rosemary, green tea, huzhang, Chinese goldthread, and barberry. The inventive subject matter further relates to methods for modulating gene expression of genes selected from the group consisting of interleukin-1.alpha., interleukin-1.beta., heme oxygenase 1, aldo-keto reductase family 1, member C2, colony stimulating factor 3, leukemia inhibitory factor, heat shock 70 kDa protein, and combinations thereof, by administration of an effective amount of said compositions.