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Updated: May 20, 2026

Phosphopeptide Enrichment Coupled with Label-free Quantitative Mass Spectrometry to Investigate the Phosphoproteome in Prostate Cancer
Published on: August 2, 2018
[Phosphoproteomics-based cancer molecular-targeting therapy and diagnostics]
Yasushi Ishihama1, Masaki Wakabayashi
1Dept. of Molecular & Cellular BioAnalysis, Kyoto University, Japan.
Abstract:
Protein phosphorylation, one of the most ubiquitous post-translational modifications of proteins, is reversibly controlled by protein kinases and phosphatases, and regulates a variety of cell functions through cellular signal transduction pathways. These signals are involved in various diseases such as cancer, and often cause the disease itself or its progression. Phosphoproteomics has been explored to analyze protein phosphorylation comprehensively and has been applied to monitoring the entire network of cellular signal transduction. In this review, the frontlines of phosphoproteomics as well as its application to cancer molecular targeting drug discovery, therapy and diagnostics are described.
Insights
Protein phosphorylation, regulated by kinases and phosphatases, controls cell functions and is vital in cancer. Phosphoproteomics offers insights into these signals for targeted cancer therapies and diagnostics.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Signaling
Context:
- Protein phosphorylation is a fundamental post-translational modification regulating diverse cellular processes.
- Dysregulated signaling pathways, driven by aberrant phosphorylation, are implicated in cancer development and progression.
- Understanding these complex networks is crucial for therapeutic intervention.
Purpose:
- To review the current landscape of phosphoproteomics.
- To highlight the applications of phosphoproteomics in cancer research.
- To explore its role in molecularly targeted drug discovery, therapy, and diagnostics.
Summary:
- Phosphoproteomics enables comprehensive analysis of protein phosphorylation, providing a systems-level view of cellular signal transduction.
- This approach is instrumental in identifying key signaling nodes and pathways altered in cancer.
- The review covers advancements in phosphoproteomics techniques and their translation into clinical applications.
Impact:
- Facilitates the identification of novel biomarkers for cancer diagnostics and prognostics.
- Enables the development of more precise molecularly targeted cancer therapies.
- Advances our understanding of cancer signaling networks, paving the way for innovative treatment strategies.
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