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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
DAP-kinase--protector or enemy in apoptotic cell death
Regine Schneider-Stock1, Albert Roessner, Oliver Ullrich
1Department of Pathology, Head of Molecular Genetics Division, Otto-von-Guericke University, Magdeburg, Germany. regine.schneider-stock@medizin.uni-magdeburg.de
Abstract:
Death-associated protein (DAP)-kinase, a member of a novel subfamily of pro-apoptotic serine/threonine kinases, was recently identified as a new tumor suppressor gene with multiple functions in programmed cell death. This 160-kDa protein consists of different interaction domains that enable it to participate in seemingly contradictory pathways such as elimination of premalignant cells or cytoprotection in cellular homoeostasis. DAP-kinase is frequently inactivated by aberrant promoter methylation in many cancer types, and its expression was shown to be a useful molecular marker for cancer prognosis. Moreover, DAP-kinase is considered a regulator of neuronal apoptosis. Future investigations should allow for the evaluation of DAP-kinase as a potential target for both pro- and anti-apoptotic therapeutic interventions.
Insights
Death-associated protein (DAP)-kinase, a tumor suppressor gene, regulates programmed cell death and is frequently inactivated in cancers. Its expression serves as a prognostic marker, and DAP-kinase is a potential therapeutic target.
Area of Science:
- Molecular Biology
- Cancer Research
- Cell Death Pathways
Background:
- Death-associated protein (DAP)-kinase is a novel serine/threonine kinase subfamily member.
- It functions as a tumor suppressor gene involved in programmed cell death.
- DAP-kinase has dual roles in eliminating premalignant cells and cytoprotection.
Purpose of the Study:
- To investigate the multifaceted roles of DAP-kinase in cellular processes.
- To explore the significance of DAP-kinase inactivation in cancer development.
- To evaluate DAP-kinase as a potential therapeutic target.
Main Methods:
- Analysis of DAP-kinase structure and interaction domains.
- Investigation of DAP-kinase expression and methylation patterns in various cancer types.
- Assessment of DAP-kinase's role in neuronal apoptosis.
Main Results:
- DAP-kinase exhibits diverse functions, including tumor suppression and regulation of apoptosis.
- Aberrant promoter methylation frequently inactivates DAP-kinase in numerous cancers.
- DAP-kinase expression levels correlate with cancer prognosis.
Conclusions:
- DAP-kinase is a critical regulator of apoptosis and a tumor suppressor.
- Its inactivation via methylation is common in cancer, making it a prognostic marker.
- DAP-kinase presents a promising target for future pro- and anti-apoptotic therapies.
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