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Published on: November 28, 2014
The battlefield of perforin/granzyme cell death pathways
Sabine Hoves1, Joseph A Trapani, Ilia Voskoboinik
1Cancer Immunology Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia.
Journal of Leukocyte Biology
|November 17, 2009
Summary
Cytotoxic lymphocytes (CL) use perforin (PRF) and granzymes (Grz) to eliminate infected cells. This review explores how PRF and Grz work together, addressing debated mechanisms of cell death and immune regulation.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- Cytotoxic lymphocytes (CL) are crucial for immune surveillance.
- Perforin (PRF) and granzymes (Grz) are key effector molecules released by CL.
- These molecules are stored in secretory granules and released upon immune synapse formation.
Purpose of the Study:
- To review the current understanding of PRF and Grz synergy in inducing target cell death.
- To address ongoing debates and controversies regarding their apoptotic mechanisms.
- To highlight their role in maintaining immune homeostasis.
Main Methods:
- Review of existing literature on CL effector mechanisms.
- Analysis of mechanistic aspects of PRF and Grz interactions.
- Discussion of debated apoptotic pathways.
Main Results:
- PRF and Grz synergize to induce target cell apoptosis.
- Immune synapse formation triggers the release of PRF and Grz.
- The precise mechanisms of synergy and apoptosis are still under investigation.
Conclusions:
- PRF and Grz are essential for cytotoxic T lymphocyte (CTL) and Natural Killer (NK) cell functions.
- Understanding their synergistic action is key to elucidating cell-mediated immunity.
- Further research is needed to resolve current controversies in the field.
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