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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
Published on: December 27, 2016
JNK signaling in apoptosis.
1Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, PA 19140, USA. danny001@temple.edu
Oncogene
|October 22, 2008
Summary
Jun N-terminal kinases (JNKs) are crucial for apoptosis, regulating both extrinsic and intrinsic cell death pathways. JNKs promote cell death by altering gene expression and protein activity, as detailed in this review.
Area of Science:
- Cellular biology
- Molecular biology
- Biochemistry
Background:
- Jun N-terminal kinases (JNKs) are key regulators of cellular stress responses.
- Apoptosis, or programmed cell death, is essential for development and tissue homeostasis.
- Dysregulation of apoptosis is implicated in various diseases, including cancer and neurodegeneration.
Purpose of the Study:
- To review the critical role of JNK in initiating and executing apoptotic signaling pathways.
- To elucidate the diverse mechanisms through which JNKs modulate apoptosis.
- To provide a comprehensive understanding of JNK's function in both extrinsic and intrinsic cell death.
Main Methods:
- Literature review of existing research on JNK signaling and apoptosis.
- Analysis of molecular mechanisms involving JNK-mediated gene transcription.
- Examination of JNK's direct phosphorylation of mitochondrial proteins.
Main Results:
- JNKs are integral to death receptor-mediated extrinsic apoptosis.
- JNKs also play a vital role in mitochondrial-mediated intrinsic apoptosis.
- JNK activation leads to apoptosis via transcription factor transactivation and direct protein modification.
Conclusions:
- JNK signaling is a central node in coordinating apoptotic responses.
- Understanding JNK mechanisms offers therapeutic targets for diseases involving apoptosis.
- Further research into JNK phosphorylation events can reveal novel apoptotic regulators.
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