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The role of calcium in the regulation of apoptosis
1Department of Cell Biology, The University of Texas M. D. Anderson Cancer Center, Houston 77030, USA. David_McConkey@isqm.mda.uth.tmc.edu
Abstract:
Apoptosis (programmed cell death) has gained widespread attention due to its roles in a variety of physiological and pathological processes, yet precisely how apoptosis is regulated by external and internal cues remains unclear. Work from our laboratories and others has implicated alterations in intracellular Ca2+ in apoptosis, and more recent work has defined particular biochemical processes that are targeted by Ca2+ in apoptotic cells. This review will summarize the role of Ca2+ in apoptosis within the context of what is known about the core components of the effector machinery for apoptosis.
Insights
Calcium (Ca2+) significantly influences apoptosis (programmed cell death), impacting physiological and pathological processes. This review details how Ca2+ interacts with core apoptotic machinery, clarifying its regulatory role.
Area of Science:
- Cell Biology
- Biochemistry
- Physiology
Background:
- Apoptosis, or programmed cell death, is crucial for development and disease.
- The precise regulation of apoptosis by external and internal signals is not fully understood.
- Altered intracellular calcium (Ca2+) levels are implicated in apoptotic processes.
Purpose of the Study:
- To review the role of calcium (Ca2+) in apoptosis.
- To connect Ca2+ 's function in apoptosis with the known components of the apoptotic effector machinery.
Main Methods:
- Literature review of existing research on apoptosis and calcium signaling.
- Synthesis of findings implicating Ca2+ in apoptotic pathways.
- Analysis of biochemical processes targeted by Ca2+ in apoptotic cells.
Main Results:
- Intracellular Ca2+ plays a significant role in regulating apoptosis.
- Specific biochemical pathways are targeted by Ca2+ during apoptosis.
- Ca2+ interacts with key components of the apoptosis effector machinery.
Conclusions:
- Calcium signaling is a critical regulator of apoptosis.
- Understanding Ca2+ 's role provides insight into physiological and pathological cell death.
- Further research can elucidate the precise mechanisms of Ca2+ in apoptosis.