Category: Head and Neck Cancer

β-Lapachone, a Naturally Occurring O-naphthoquinone, is a Topoisomerase I Inhibitor

β-Lapachone is an ortho-naphthoquinone and inhibits topoisomerase I. β-Lapachone is a classic quinone-containing antitumor NQO1-bioactivatable drug that directly kills NQO1-overexpressing cancer cells. NQO1 is an antioxidative enzyme that helps recover renal oxidative status. β-Lapachone reduces cisplatin-induced nephrotoxicity. In cancer cells, cisplatin forms cross-link with  DNA, which inhibits DNA  replication,...

GSK2606414 is an Orally Available PERK Inhibitor

PERK (Protein kinase R (PKR)-like endoplasmic reticulum kinase) is a type I endoplasmic reticulum transmembrane protein. Generally, PERK contains a stress-sensing domain facing the endoplasmic reticulum lumen and a cytosolic kinase domain. Interestingly, PERK is a major component of the unfolded protein response (UPR), which promotes the adaptation of...

COTI-2 is an Orally Available Mutant p53 Activator

TP53 (p53) is the single most frequently altered gene in human cancers, with mutations being present in approximately 50% of all invasive tumors. Besides, p53 is mutated in at least 80% of samples in some of the most difficult-to-treat cancers. Therefore, the mutant p53 protein is an important candidate...