trametinib

Trametinib (GSK1120212) is a MEK inhibitor that inhibits MEK1 and MEK2 (IC50=0.7 0.9 nM) with ATP non-competitive and oral activity. Trametinib activates autophagy and induces apoptosis.

Trametinib (DMSO solvate) (GSK-1120212 (DMSO solvate)) is a highly potent and selective MEK inhibitor that specifically inhibits MEK1 2 (IC50: 2 nM).

AKT-IN-24 (Compound M17) is an allosteric inhibitor of AKT exhibiting antitumor activity. In combination with Trametinib, it targets the AKT mTOR and MEK ERK signaling pathways while inhibiting epithelial-mesenchymal transition, resulting in a synergistic suppression effect on TNBC. This combination promotes apoptosis and inhibits cell proliferation and migration.

GSK1790627, the N-deacetylated metabolite of Trametinib, represents an orally active MEK inhibitor that promotes autophagy and triggers apoptosis [1].

Trametiglue, a Trametinib derivative, exhibits exceptional potency and selectivity in targeting KSR-MEK and RAF-MEK through distinctive interfacial binding interactions [1].

HP661, a selective inhibitor of mitochondrial complex I (NADH dehydrogenase), impedes complex I activity by 77.6% at 1 µM, demonstrating lesser inhibition towards complex III (28.1%) and no inhibitory effects on complexes II and IV. It notably decreases the viability of human lung cancer cells—H460, NCI H441, and trametinib-resistant A549 cells (IC50s = 10.6, 29.7, and 15.1 nM, respectively)—which exhibit high levels of oxidative phosphorylation. In contrast, it shows minimal activity against NCI H358 lung cancer cells and non-cancerous HPNE and MRC-5 cells (IC50s = >10,000 nM for both), which have lower oxidative phosphorylation levels. Furthermore, in an H460 mouse xenograft model, HP661 at a dose of 30 mg/kg twice daily significantly reduces tumor volume and enhances the tumor-growth inhibitory effects of trametinib.