u87 glioblastoma cells

BAY-218 (AHR antagonist 1) is an aryl hydrocarbon receptor (AHR) antagonist , has an IC50 of 39.9 nM in human cell line.

ML309 is a potent inhibitor of R132H mutant IDH1 capable of reducing 2-hydroxyglutarate production in U87 MG glioblastoma cells. ML309 is capable of potent and selective inhibition of mutant IDH1 and effectively lowers cell-based production of 2-HG in a U87MG mutant glioblastoma cell line.

EGFR-IN-86 (compound 4i), an EGFR inhibitor (IC50: 1.5 nM), demonstrates potent activity against glioblastoma by inducing apoptosis and causing G2/M phase cell cycle arrest in U87 cells [1].

ML-309 is an inhibitor of mutant isocitrate dehydrogenase 1 (IDH1). It reversibly and selective inhibits IDH1R132H over wild-type IDH1 (IC50s = 96 and 36,500 nM, respectively). ML-309 reduces 2-hydroxyglutarate production in U87 MG glioblastoma cells (EC50 = 55 nM).

Arecaidine propargyl ester is an agonist of M2muscarinic acetylcholine receptors (mAChRs).1It selectively binds to M2over M1, M3, M4, and M5mAChRs in CHO cells expressing the human receptors (Kis = 0.0871, 1.23, 0.851, 0.977, and 0.933 μM, respectively). Arecaidine propargyl ester induces contractions in isolated guinea pig atrium (pD2= 8.67). It induces apoptosis and the production of reactive oxygen species (ROS) in U87 and U251 glioblastoma cells when used at a concentration of 100 μM.2Arecaidine propargyl ester decreases mean arterial blood pressure in normotensive cats (ED25= 1.9 nmol/kg).3It is toxic to house flies (Musca) when administered at a dose of 75 μg/fly.4 1.Scapecchi, S., Matucci, R., Bellucci, C., et al.Highly chiral muscarinic ligands: the discovery of (2S,2’R,3’S,5’R)-1-methyl-2-(2-methyl-1,3-oxathiolan-5-yl)pyrrolidine 3-sulfoxide methyl iodide, a potent, functionally selective, M2 partial agonistJ. Med. Chem.49(6)1925-1931(2006) 2.Di Bari, M., Tombolillo, B., Conte, C., et al.Cytotoxic and genotoxic effects mediated by M2 muscarinic receptor activation in human glioblastoma cellsNeurochem. Int.90261-270(2015) 3.Porsius, A.J., and Van Zwieten, P.A.Central action of some cholinergic drugs (arecaidine esters) and nicotine on blood pressure and heart rate of catsProg. Brain Res.47131-135(1977) 4.Honda, H., Tomizawa, M., and Casida, J.E.Insect muscarinic acetylcholine receptor: Pharmacological and toxicological profiles of antagonists and agonistsJ. Agric. Food Chem.55(6)2276-2281(2007)

K-TMZ is a DNA alkylating agent. It increases the concentration of O6-methylated deoxyguanosine in U87 glioblastoma multiforme (GBM) cells in a concentration-dependent manner. K-TMZ reduces cell viability of GBM cell lines lacking (IC50s = 18-44 μM) or expressing O6-methylguanine DNA methyltransferase (MGMT; IC50s = 115-240 μM). K-TMZ can cross the blood-brain barrier and increases survival in a Br23c mouse xenograft model of GBM when administered at a dose of 14.9 mg/kg.