Mitogen activated protein kinase phosphatases and cancer
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Updated: Jun 16, 2026

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors
Published on: April 29, 2022
Kelly K Haagenson1, Gen Sheng Wu
1Graduate Program in Cancer Biology, Wayne State University School of Medicine, Detroit, MI, USA.
Abstract:
Deregulation of cell signaling is a vital part of cancer development. The mitogen activated protein kinase (MAPK) family is involved in regulating both cell growth and cell death. This family of kinases is negatively regulated by mitogen activated protein kinase phosphatases (MKPs). MKPs are dual specificity phosphatases that target threonine and tyrosine residues that appear in a TXY motif. There are eleven members of the MKP family. Expression of MKPs has been shown to be altered in many different types of cancer. Most of what is known centers on MKP-1, MKP-2 and MKP-3. This review will focus on their role in cancer development and progression.
Insights
Mitogen-activated protein kinase phosphatases (MKPs) regulate cell signaling crucial for cancer development. This review highlights the roles of MKP-1, MKP-2, and MKP-3 in various cancers.
Area of Science:
- Oncology
- Molecular Biology
- Cell Signaling
Background:
- Cell signaling deregulation is fundamental to cancer development.
- The mitogen-activated protein kinase (MAPK) pathway controls cell growth and death.
- Mitogen-activated protein kinase phosphatases (MKPs) negatively regulate MAPK signaling.
Purpose of the Study:
- To review the role of MKPs, particularly MKP-1, MKP-2, and MKP-3, in cancer development and progression.
- To elucidate the function of MKPs as dual specificity phosphatases targeting TXY motifs.
Main Methods:
- Literature review focusing on MKP expression and function in cancer.
- Analysis of existing research on MKP-1, MKP-2, and MKP-3.
- Synthesis of data on MKP involvement in cell growth and death pathways.
Main Results:
- Altered expression of MKPs is observed across numerous cancer types.
- MKP-1, MKP-2, and MKP-3 are key regulators within the MAPK pathway.
- MKPs' phosphatase activity is critical for their regulatory function.
Conclusions:
- MKPs play a significant role in cancer pathogenesis.
- Understanding MKP function is vital for developing targeted cancer therapies.
- Further research into specific MKP roles in different cancers is warranted.
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