Journal
BIOLOGICAL REVIEWS
Volume 96, Issue 3, Pages 961-975Publisher
WILEY
DOI: 10.1111/brv.12686
Keywords
calpain; CAPN; CAPNS1; calpastatin; CAST; cancer
Categories
Funding
- National Natural Science Foundation of China [81970793]
- Tianjin Clinical Key Discipline Project [TJLCZDXKT003]
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The calpain system plays crucial roles in cancer progression by mediating the proteolysis of specific substrates and regulating important signaling molecules. mu-calpain, m-calpain, and calpastatin are the three molecules initially identified as components of the calpain system, with roles in cancer progression through regulation of cellular processes and potential as targets for anti-cancer interventions.
The calpain system is required by many important physiological processes, including the cell cycle, cytoskeleton remodelling, cellular proliferation, migration, cancer cell invasion, metastasis, survival, autophagy, apoptosis and signalling, as well as the pathogenesis of a wide range of disorders, in which it may function to promote tumorigenesis. Calpains are intracellular conserved calcium-activated neutral cysteine proteinases that are involved in mediating cancer progression via catalysing and regulating the proteolysis of their specific substrates, which are important signalling molecules during cancer progression. mu-calpain, m-calpain, and their specific inhibitor calpastatin are the three molecules originally identified as comprising the calpain system and they contain several crucial domains, specific motifs, and functional sites. A large amount of data supports the roles of the calpain-calpastatin system in cancer progression via regulation of cellular adhesion, proliferation, invasion, metastasis, and cellular survival and death, as well as inflammation and angiogenesis during tumorigenesis, implying that the inhibition of calpain activity may be a potential anti-cancer intervention strategy targeting cancer cell survival, invasion and chemotherapy resistance.
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