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Updated: Mar 22, 2026
JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics
Published on: October 19, 2021
Microarray-Based Phospho-Proteomic Profiling of Complex Biological Systems
C Rory Goodwin1, Crystal L Woodard2, Xin Zhou3
1Department of Neurosurgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.
Abstract:
Protein microarray technology has been successfully used for identifying substrates of purified activated kinases. We used protein microarrays to globally interrogate the effects of PTEN and Akt activity on the phospho-kinome of in vitro and in vivo glioma models and validated results in clinical pathological specimens. Whole cell lysates extracted from tumor samples can be applied to human kinome chip microarrays to profile the global kinase phosphorylation patterns in a high-throughput manner and identify novel substrates inherent to the tumor cell and the interactions with tumor microenvironment. Our findings identify a novel microarray-based method for assessing intracellular signaling events applicable to human oncogenesis and other pathophysiologic states.
Insights
Protein microarrays reveal how PTEN and Akt influence glioma cell signaling. This high-throughput method identifies novel kinase substrates and interactions in tumors, aiding oncogenesis research.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Protein microarrays are established tools for identifying kinase substrates.
- Understanding the roles of PTEN and Akt in cancer signaling is crucial.
Purpose of the Study:
- To globally interrogate the effects of PTEN and Akt activity on the phospho-kinome in glioma models.
- To validate findings in clinical pathological specimens.
- To identify novel kinase substrates and interactions in tumor cells.
Main Methods:
- Utilized protein microarrays (human kinome chip) to analyze whole cell lysates from glioma tumor samples.
- Performed high-throughput profiling of global kinase phosphorylation patterns.
- Validated findings in clinical pathological specimens.
Main Results:
- Identified global kinase phosphorylation patterns affected by PTEN and Akt activity in glioma.
- Discovered novel kinase substrates inherent to tumor cells.
- Revealed interactions between tumor cells and the tumor microenvironment.
Conclusions:
- Protein microarrays offer a novel, high-throughput method for assessing intracellular signaling events.
- This approach is applicable to studying human oncogenesis and other pathophysiologic states.
- The findings provide insights into glioma signaling pathways.
