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Published on: October 11, 2012
Apoptosis: programmed cell death in health and disease
Abstract:
Apoptosis is a normal physiological cell death process of eliminating unwanted cells from living organisms during embryonic and adult development. Apoptotic cells are characterised by fragmentation of nuclear DNA and formation of apoptotic bodies. Genetic analysis revealed the involvement of many death and survival genes in apoptosis which are regulated by extracellular factors. There are multiple inducers and inhibitors of apoptosis which interact with target cell specific surface receptors and transduce the signal by second messengers to programme cell death. The regulation of apoptosis is elusive, but defective regulation leads to aetiology of various ailments. Understanding the molecular mechanism of apoptosis including death genes, death signals, surface receptors and signal pathways will provide new insights in developing strategies to regulate the cell survival/death. The current knowledge on the molecular events of apoptotic cell death and their significance in health and disease is reviewed.
Insights
Apoptosis, a programmed cell death, eliminates unwanted cells via DNA fragmentation. Understanding its complex molecular regulation is key to addressing diseases linked to its dysfunction.
Area of Science:
- Cell Biology
- Molecular Biology
- Genetics
Background:
- Apoptosis is a fundamental physiological process for eliminating unwanted cells during development.
- Characterized by DNA fragmentation and apoptotic body formation, it involves numerous death and survival genes.
- Regulation is complex, influenced by extracellular factors, receptors, and signaling pathways.
Purpose of the Study:
- To review the molecular mechanisms of apoptotic cell death.
- To highlight the significance of apoptosis in health and disease.
- To provide insights for developing strategies to regulate cell survival and death.
Main Methods:
- Genetic analysis to identify involved genes.
- Review of literature on extracellular factors, receptors, and signaling pathways.
- Examination of the role of apoptosis in various ailments.
Main Results:
- Apoptosis involves intricate interactions between death/survival genes, regulated by external signals.
- Dysregulation of apoptosis is implicated in the etiology of numerous diseases.
- Understanding molecular events offers potential therapeutic targets.
Conclusions:
- Elucidating the molecular intricacies of apoptosis is crucial for therapeutic development.
- Targeting apoptosis pathways may offer novel strategies for disease treatment.
- Further research into apoptosis regulation can advance our understanding of cell fate.
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