Heat shock protein family B (small) member 7 (HSPB7)

Heat shock protein family B (small) member 7 (HSPB7) is a muscle-specific molecular chaperone, predominantly expressed in the heart, belonging to the small heat shock protein family. Functionally, HSPB7 stabilizes sarcomeric structure and organizes actin filaments, modulates protein homeostasis, and has both chaperone and redox regulatory activity. It prevents aggregation of large cytoskeletal proteins (e.g., filamin C, titin) and plays a central role in maintaining cardiovascular integrity. Genetic mutations or deficiency in HSPB7 lead to severe cardiac defects, arrhythmias, and heart failure, and the protein is often inactivated or lost in diverse cancers, where it can act as a tumor suppressor. HSPB7 is also under investigation as a potential biomarker of cardiac disease and injury. There are currently no known direct-acting pharmacological inhibitors or modulators of HSPB7.

Other names

heat shock protein beta-7cvHSPCardiovascular heat shock proteinHspB7heat shock 27kD protein family, member 7 (cardiovascular)heat shock 27kDa protein family, member 7 (cardiovascular)HSPB7Hsp25-2

No pharmacological drugs are currently known to target HSPB7 directly; its mechanisms relate to chaperone activity and actin regulation. Mechanistic studies refer to genetic manipulation or modulation of protein activity rather than drug action.