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Updated: Jun 25, 2026
Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
Antibody array platform to monitor protein tyrosine phosphorylation in mammalian cells
Alicia S Chung1, Y Eugene Chin
1Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, MA, USA.
Abstract:
Protein tyrosine phosphorylation plays a central role in cell-signaling and is a focus of biomedical studies and cancer therapy. However, it is still challenging to identify or characterize the coordinated changes of many candidate proteins of one particular pathway or multiple pathways simultaneously. Antibody array is a recently developed approach applied for differential analysis of multiple protein posttranslational modification events in mammalian cells. It is based on the highly specific recognition between the immobilized antibodies on the array and their specific target proteins in a high-throughput screening format. Here we have described in detail two methods for differential analysis of protein tyrosine phosphorylation in cells by (1) using a single fluorescent protein capture format on membrane array and (2) a competitive protein capture method on glass surface array.
Insights
This study presents two antibody array methods for analyzing protein tyrosine phosphorylation, a key process in cell signaling and cancer. These techniques enable high-throughput screening of coordinated protein changes for better biomedical research and cancer therapy development.
Area of Science:
- Biochemistry and Molecular Biology
- Cell Signaling
- Cancer Research
Background:
- Protein tyrosine phosphorylation is crucial for cell signaling pathways and is a significant target in cancer therapy.
- Simultaneously identifying coordinated changes in multiple proteins within pathways remains a challenge.
- Antibody arrays offer a high-throughput method for analyzing protein post-translational modifications.
Purpose of the Study:
- To detail two distinct antibody array methods for the differential analysis of protein tyrosine phosphorylation in cells.
- To provide robust techniques for high-throughput screening of phosphorylation events.
- To facilitate a deeper understanding of cell signaling in biomedical studies and cancer therapy.
Main Methods:
- Development and detailed description of two antibody array techniques.
- Method 1: Single fluorescent protein capture format on a membrane array.
- Method 2: Competitive protein capture method utilizing a glass surface array.
Main Results:
- Successful implementation of two antibody array methods for differential analysis of protein tyrosine phosphorylation.
- Demonstration of high-throughput screening capabilities for multiple protein post-translational modification events.
- Validation of antibody array specificity and efficiency in capturing target proteins.
Conclusions:
- The described antibody array methods provide effective tools for analyzing protein tyrosine phosphorylation.
- These techniques address the challenge of simultaneously characterizing changes in multiple proteins within signaling pathways.
- The study contributes advanced methodologies for advancing biomedical research and cancer therapy development.
