Jane L Roberts, Mehrad Tavallai, Aida Nourbakhsh, Abigail Fidanza, Tanya Cruz-Luna, Elizabeth Smith, Paul Siembida, Pascale Plamondon, Kelly A Cycon, Christopher D Doern, Laurence Booth, Paul Dent
Prior tumor cell studies have shown that the drugs sorafenib (Nexavar) and regorafenib (Stivarga) reduce expression of the chaperone GRP78. Sorafenib/regorafenib and the multi-kinase inhibitor pazopanib (Votrient) interacted with sildenafil (Viagra) to further rapidly reduce GRP78 levels in eukaryotes and as single agents to reduce Dna K levels in prokaryotes. Similar data were obtained in tumor cells in vitro and in drug-treated mice for: HSP70, mitochondrial HSP70, HSP60, HSP56, HSP40, HSP10, and cyclophilin A...
October 2015: Journal of Cellular Physiology