Glesatinib

Glesatinib (MGCD265) is an orally active, potent MET/SMO dual inhibitor. Glesatinib, a tyrosine kinase inhibitor, antagonizes P-glycoprotein (P-gp) mediated multidrug resistance (MDR) in non-small cell lung cancer (NSCLC)[1][2].

Research Areas >> Cancer

Signaling Pathways >> Protein Tyrosine Kinase/RTK >> TAM Receptor

Signaling Pathways >> Protein Tyrosine Kinase/RTK >> c-Met/HGFR

MET

Glesatinib (MGCD265; 0.01-5 μM; for 72 hours) results in a dose-dependent inhibition of cancer cell growth and shows the low IC50 value of 0.08 μM on NSCLC H1299 cells[1]. Glesatinib (0.01, 0.1, 0.5, 1 μM) significantly increases by several-fold the percentage of apoptotic cells in NSCLC H1299 cells[1]. Glesatinib has the cytotoxicity to P-gp overexpressing cancer cells KB-C2, SW620/Ad300, HEK293/ABCB1, and their parent cells KB-3-1, SW620, HEK293 cells with the IC50s fell between 5 and 10 μM[1]. Glesatinib (1, 3 μM; 120 mins) increases the intracellular [3H]-Paclitaxel accumulation and inhibits [3H]-Paclitaxel efflux in cancer cell lines overexpressing P-gp[2]. Glesatinib (0-40 μM) stimulates the ATPase activity of P-gp transporters in a dose-dependent manner[2]. Cell Proliferation Assay[1] Cell Line: NSCLC H1299 cells Concentration: 0.01, 0.1, 1, 2, 5 μM Incubation Time: For 72 hours Result: Resulted in a dose-dependent inhibition of cancer cell growth and showed the lowest IC50 value of 0.08 μM.

Glesatinib (MGCD265; 15 mg/kg/day; orally; 40 weeks) causes a significant decrease in tumor size[1]. Animal Model: 4−6-week old female balb/c athymic (nu/nu) mice with HCC827 NSCLC tumor xenografts[1] Dosage: 15 mg/kg Administration: Orally; daily; 40 weeks Result: Caused a significant decrease in tumor size.

[1]. Morgillo F, et al. Dual MET and SMO Negative Modulators Overcome Resistance to EGFR Inhibitors in Human Nonsmall Cell Lung Cancer. J Med Chem. 2017 Sep 14;60(17):7447-7458.

[2]. Cui Q, et al. Glesatinib, a c-MET/SMO Dual Inhibitor, Antagonizes P-glycoprotein Mediated MultidrugResistance in Cancer Cells. Front Oncol. 2019 Apr 25;9:313.