title: Targeting HSP70: the second potentially druggable heat shock protein and molecular chaperone?
abstract: The HSF1-mediated stress response pathway is steadily gaining momentum as a critical source of targets for cancer therapy. Key mediators of this pathway include molecular chaperones such as heat shock protein (HSP) 90. There has been considerable progress in targeting HSP90 and the preclinical efficacy and signs of early clinical activity of HSP90 inhibitors have provided proof-of-concept for targeting this group of proteins. The HSP70 family of molecular chaperones are also key mediators of the HSF-1-stress response pathway and have multiple additional roles in protein folding, trafficking and degradation, as well as regulating apoptosis. Genetic and biochemical studies have supported the discovery of HSP70 inhibitors which have the potential for use as single agents or in combination to enhance the effects of classical chemotherapeutic or molecularly targeted agents including HSP90 inhibitors. Here we provide a perspective on the progress made so far in designing agents which target the HSP70 family.
authors.affiliation: Cancer Research UK Centre for Cancer Therapeutics, The Institute of Cancer Research, Sutton, Surrey, UK.
authors.forename: Marissa V
authors.initials: MV
authors.lastname: Powers
authors.forename: Keith
authors.initials: K
authors.lastname: Jones
authors.forename: Caterina
authors.initials: C
authors.lastname: Barillari
authors.forename: Isaac
authors.initials: I
authors.lastname: Westwood
authors.forename: Rob L M
authors.initials: RL
authors.lastname: van Montfort
authors.forename: Paul
authors.initials: P
authors.lastname: Workman
mesh_terms: D000818:Animals; D001665:Binding Sites; D004268:DNA-Binding Proteins / Q000378:metabolism; D018840:HSP70 Heat-Shock Proteins / Q000037:antagonists & inhibitors* / Q000378:metabolism; D018841:HSP90 Heat-Shock Proteins / Q000037:antagonists & inhibitors / Q000378:metabolism; D000076249:Heat Shock Transcription Factors; D051379:Mice; D018832:Molecular Chaperones / Q000378:metabolism*; D017510:Protein Folding; D017434:Protein Structure, Tertiary; D054852:Small Molecule Libraries / Q000737:chemistry / Q000494:pharmacology; D014157:Transcription Factors / Q000378:metabolism
chemical_list: D004268:DNA-Binding Proteins; D018840:HSP70 Heat-Shock Proteins; D018841:HSP90 Heat-Shock Proteins; D000076249:Heat Shock Transcription Factors; C490017:Hsf1 protein, mouse; D018832:Molecular Chaperones; D054852:Small Molecule Libraries; D014157:Transcription Factors