Journal: Future Oncology
Article Title: A perioperative study of Safusidenib in patients with IDH1 -mutated glioma
doi: 10.1080/14796694.2024.2383064
Figure Lengend Snippet: IDH mutations and mutant IDH inhibitors. (A) Mutations in IDH1 and IDH2 increase 2-HG promoting pleotropic effects leading to tumorigenesis. 2-HG competitively inhibits α-KG binding to histone demethylases, including KDM2A, TET1 and TET2 hydroxymethylases promoting epigenetic dysregulation through hypermethylation of DNA. 2-HG also stabilises HIF1α promoting increased vascular endothelial growth factor (VEGF) signaling and angiogenesis. Additionally, the mutant IDH1 consumes NADPH for NADP + production, driving a metabolic compensation through glutaminolysis, leading to the accumulation of reactive oxidation species (ROS) and oxidative damage. In the tumor microenvironment, 2-HG exerts immunosuppressive effects through upregulation of immunosuppressive macrophages and down regulation of CD8 + T cells. (B) Safusidenib binds to the allosteric pocket in the mutant IDH1 dimer surface stabilizing the inactive form of the enzyme, thus reducing 2-HG and reversing the oncogenic effects. Created with BioRender.com .
Article Snippet: Safusidenib (AB-218 / DS-1001b) is an oral, blood brain barrier penetrant IDH1 R132X enzyme inhibitor developed by Daiichi Sankyo.
Techniques: Mutagenesis, Binding Assay