Abstract
The MST family of protein kinases plays a critical role in the regulation of cell death in diverse organisms including mammals. The intracellular signaling pathways that regulate MST-driven cell death in mammalian cells are the subject of intense investigation. Stress stimuli including oxidative stress and DNA damaging agents trigger the activity of MST in cells. Although the mechanisms by which oxidative stress and DNA damage trigger MST activation remain to be identified, MST activity can be regulated by caspase-induced cleavage as well as interactions with other proteins in cells. Once activated upon oxidative stress, MST induces cell death via phosphorylation and activation of the transcription factor FOXO3 or the histone protein H2B. This review focuses on the currently known upstream activating mechanisms for MST, and explores the downstream signaling pathways that mediate MSTs principal function in cell death. Elucidation of MST functions and their regulatory mechanisms in cell death have important implications for our understanding of cellular homeostasis as well as the pathogenesis of diverse diseases.
Current Molecular Medicine
Title: Demystifying MST Family Kinases in Cell Death
Volume: 8 Issue: 4
Author(s): Maria K. Lehtinen and Azad Bonni
Affiliation:
Abstract: The MST family of protein kinases plays a critical role in the regulation of cell death in diverse organisms including mammals. The intracellular signaling pathways that regulate MST-driven cell death in mammalian cells are the subject of intense investigation. Stress stimuli including oxidative stress and DNA damaging agents trigger the activity of MST in cells. Although the mechanisms by which oxidative stress and DNA damage trigger MST activation remain to be identified, MST activity can be regulated by caspase-induced cleavage as well as interactions with other proteins in cells. Once activated upon oxidative stress, MST induces cell death via phosphorylation and activation of the transcription factor FOXO3 or the histone protein H2B. This review focuses on the currently known upstream activating mechanisms for MST, and explores the downstream signaling pathways that mediate MSTs principal function in cell death. Elucidation of MST functions and their regulatory mechanisms in cell death have important implications for our understanding of cellular homeostasis as well as the pathogenesis of diverse diseases.
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Cite this article as:
Lehtinen K. Maria and Bonni Azad, Demystifying MST Family Kinases in Cell Death, Current Molecular Medicine 2008; 8 (4) . https://dx.doi.org/10.2174/156652408784533805
DOI https://dx.doi.org/10.2174/156652408784533805 |
Print ISSN 1566-5240 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5666 |
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