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Published on: March 5, 2018
Involvement of proteases in apoptosis
M P Kutsyi1, E A Kuznetsova, A I Gaziev
1Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142292, Russia. gaziev@venus.iteb.serpukhov.su
Abstract:
Genetically programmed (apoptotic) cell death plays a key role in cell and tissue homeostasis and in pathogenesis of various diseases. However, the mechanisms involved in apoptotic cell death are poorly understood. At present, the role of proteases in key events of apoptosis is intensively studied and discussed and the involvement of various proteolytic enzymes in the induction and development of the cell death is well-recognized. Proteases of various classes participating in apoptosis have been identified as well as some substrates of these proteases whose cleavage is critical to cell viability; specific protease inhibitors which prevent the cell death have been synthesized. This review summarizes new data on proteolytic enzymes involved in apoptosis and considers the mechanisms of activation of proteases upon induction of apoptosis and the pathways of their involvement in the cell death. The participation of nuclear proteolytic enzymes in the destabilization of chromatin structure and regulation of DNA fragmentation by endonucleases in apoptotic cells is discussed.
Insights
Proteolytic enzymes are crucial in programmed cell death (apoptosis), influencing its mechanisms and development. Understanding these proteases and their substrates is key to developing new therapeutic strategies for diseases involving apoptosis.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Programmed cell death (apoptosis) is vital for homeostasis and disease pathogenesis.
- Mechanisms of apoptosis are not fully understood.
- Proteases are increasingly recognized for their role in apoptosis.
Purpose of the Study:
- To review current knowledge on proteolytic enzymes in apoptosis.
- To explore protease activation and involvement in cell death pathways.
- To discuss the role of nuclear proteases in chromatin destabilization and DNA fragmentation.
Main Methods:
- Literature review of studies on proteases and apoptosis.
- Analysis of identified proteases, substrates, and inhibitors.
- Discussion of mechanisms of protease activation and function.
Main Results:
- Various protease classes participate in apoptosis.
- Specific protease substrates critical for cell viability have been identified.
- Protease inhibitors that prevent cell death have been synthesized.
- Nuclear proteases contribute to chromatin structure changes and DNA fragmentation.
Conclusions:
- Proteolytic enzymes are integral to apoptosis.
- Further research into protease mechanisms can yield therapeutic targets.
- Understanding protease involvement is crucial for disease intervention.
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