期刊
ACS CHEMICAL BIOLOGY
卷 9, 期 10, 页码 2199-2203出版社
AMER CHEMICAL SOC
DOI: 10.1021/cb500586p
关键词
-
资金
- Scripps Research Institute
- National Science Foundation
Caspases are a family of cysteine proteases that are well-known for their roles in apoptosis and inflammation. Recent studies provide evidence that caspases are also integral to many additional cellular processes, such as differentiation and proliferation. Likewise, aberrant caspase activity has been implicated in the progression of several diseases, including neurodegenerative disorders, cancer, cardiovascular disease, and sepsis. These observations establish the importance of caspases to a diverse array of physiological functions and future endeavors will undoubtedly continue to elucidate additional processes that require caspase activity. Unfortunately, the existence of 11 functional human caspases, with overlapping substrate specificities, confounds the ability to confidently assign one or more isoforms to biological phenomena. Herein, we characterize a first-in-class FRET substrate that is selectively recognized by active caspase-3 over other initiator and executioner caspases. We further apply this substrate to specifically image caspase-3 activity in live cells undergoing apoptosis.
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