Related Experiment Videos
Caspase inhibitors
1The Walter and Eliza Hall Institute of Medical Research, c/o Post Office Royal Melbourne Hospital, Victoria 3050, Australia. ekert@wehi.edu.au
Abstract:
Caspases are the key effector molecules of the physiological death process known as apoptosis, although some are involved in activation of cytokines, rather than cell death. They exist in most of our cells as inactive precursors (zymogens) that kill the cell once activated. Caspases can be controlled in two ways. The processing and activation of a caspase can be regulated by molecules such as FADD, APAF-1, Bcl-2 family members, FLIP and IAPs. Active caspases can be controlled by a variety of inhibitors that directly interact with the protease. This review describes the later direct caspase inhibitors that have been identified, products of both viral and cellular genes, and artificial caspase inhibitors that have been developed both as research tools and as pharmaceutical agents to inhibit cell death in vivo.
Insights
Caspases, crucial for apoptosis, are regulated by inhibitors. This review details direct caspase inhibitors, including viral, cellular, and artificial types, for research and therapeutic applications in cell death control.
Area of Science:
- Biochemistry and Molecular Biology
- Cell Biology
- Pharmacology
Background:
- Caspases are essential proteases regulating apoptosis (programmed cell death) and cytokine activation.
- They exist as inactive zymogens and require activation for cellular functions.
- Caspase activity is tightly controlled by regulatory molecules and direct inhibitors.
Purpose of the Study:
- To review direct caspase inhibitors identified from various sources.
- To discuss the development and applications of artificial caspase inhibitors.
- To highlight their roles as research tools and potential pharmaceutical agents.
Main Methods:
- Literature review of identified direct caspase inhibitors.
- Analysis of inhibitors derived from viral and cellular genes.
- Examination of artificially developed caspase inhibitors.
Main Results:
- Identification of diverse direct caspase inhibitors, including viral and cellular gene products.
- Development of artificial inhibitors for specific research and therapeutic purposes.
- Demonstration of caspase inhibitors' utility in controlling cell death in vivo.
Conclusions:
- Direct caspase inhibitors offer critical regulatory mechanisms for apoptosis.
- Both endogenous and synthetic inhibitors hold significant potential for therapeutic interventions.
- Further research into caspase inhibition is vital for advancing cell death modulation strategies.