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Chemical-induced changes in intracellular redox state and in apoptosis
1Department of Toxicological Biochemistry, The Nofer Institute of Occupational Medicine, Lódź, Poland.
Abstract:
Necrosis and apoptosis are two ways by which cells die. A major concept of apoptosis is that it is a controlled process. From this concept it follows that cells contain a molecule or molecules which under specific, regulated circumstances mediate cell death. Recent data confirm that oxygen free radicals can be mediators of apoptosis. Chemicals could induce apoptosis due to reactive oxygen species production and changes in the intracellular redox state. Therefore, a complete understanding of the processes involved in apoptosis, and mechanisms of its manipulation, could provide novel strategies to the control of xenobiotic toxicity and give an impetus to design new therapeutic interventions.
Insights
Apoptosis is a controlled cell death process. Oxygen free radicals can mediate apoptosis, offering new strategies for xenobiotic toxicity control and therapeutic interventions.
Area of Science:
- Cellular Biology
- Biochemistry
- Toxicology
Background:
- Cell death occurs via necrosis or apoptosis.
- Apoptosis is a regulated, programmed cell death.
- Intracellular mechanisms mediate controlled cell death.
Purpose of the Study:
- To explore the role of oxygen free radicals in apoptosis.
- To understand how chemicals induce apoptosis via reactive oxygen species.
- To identify strategies for controlling xenobiotic toxicity and developing therapies.
Main Methods:
- Review of recent data on apoptosis mediators.
- Analysis of chemical induction of apoptosis.
- Examination of intracellular redox state changes.
Main Results:
- Oxygen free radicals are confirmed mediators of apoptosis.
- Chemicals can induce apoptosis through reactive oxygen species production.
- Alterations in intracellular redox state are linked to apoptosis.
Conclusions:
- Understanding apoptosis mechanisms is crucial for managing xenobiotic toxicity.
- Targeting apoptosis pathways offers potential for novel therapeutic strategies.
- Reactive oxygen species play a significant role in chemically induced apoptosis.