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Mouse models of cell death.
A M Ranger1, B A Malynn, S J Korsmeyer
1Howard Hughes Medical Institute, Department of Pathology and Medicine, Harvard Medical School, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
Nature Genetics
|May 31, 2001
Summary
Cell death is vital for organism development and health. Studies in mice reveal key regulators of apoptosis, focusing on caspase and Bcl2 families, to understand these essential cell-death pathways.
Area of Science:
- Cell Biology
- Developmental Biology
- Genetics
Background:
- Cell death is essential for metazoan development and homeostasis.
- Model organisms like C. elegans and D. melanogaster have elucidated cell-death pathway components.
- Higher organisms exhibit complex apoptotic networks with conserved regulators.
Purpose of the Study:
- To review the apoptotic machinery in mammals.
- To detail the roles of cell-death regulators using genetic models.
- To focus on caspase and Bcl2 family members, adaptors, and mitochondrial factors.
Main Methods:
- Review of studies utilizing transgenic and gene-ablated mice.
- Analysis of mammalian apoptotic pathways.
- Investigation of cell-death regulators deficient in critical components.
Main Results:
- Mammalian apoptotic pathways have been elucidated through genetic studies.
- The principal effects of key cell death regulators have been identified.
- Deficiencies in critical apoptotic components reveal their physiological roles.
Conclusions:
- Genetic models, particularly in mice, are crucial for understanding mammalian apoptosis.
- Caspase and Bcl2 families, along with adaptors and mitochondrial factors, are central to apoptotic machinery.
- Understanding these pathways is key to maintaining cellular homeostasis.