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Methods to Study Posttranslational Modification Patterns in Cytotoxic T-Cells and Cancer
Annamaria Deleonardis1,2, Massimo Papale3
1R&D Unit, Fluidia srl, Foggia, Italy.
Abstract:
Protein posttranslational modifications (PTMs) regulate intracellular signaling associated with development and progression of many diseases; thus, they are key to understanding pathological mechanisms and set up more tailored therapies. In addition, many posttranslationally modified proteins are released into biological fluids and can be used as new and more specific biomarkers. Based on this evidence, we analyzed the role of some PTMs in cancer and described the correlation between specific PTMs and T-cells activation/inhibition in cancer microenvironment. In the second part of this chapter, we analyzed the most commonly used approaches for qualitative and quantitative determination of PTMs. The comparison of three distinct but often complementary methodologies such as immunoblotting, mass spectrometry, and ELISA assays has allowed to highlight the pros and cons of each approach with a focus on their current application and their future developments to obtain more confident biomarkers and therapeutic targets useful for diagnosis, prognosis, and monitoring of the response to therapy.
Insights
Protein posttranslational modifications (PTMs) are crucial for understanding diseases like cancer and developing targeted therapies. Analyzing PTMs aids in identifying specific biomarkers for diagnosis and treatment monitoring.
Area of Science:
- Biochemistry
- Molecular Biology
- Immunology
Background:
- Protein posttranslational modifications (PTMs) are critical regulators of intracellular signaling pathways involved in disease development and progression.
- Modified proteins released into biological fluids serve as potential biomarkers for disease diagnosis and monitoring.
- Understanding PTMs in the tumor microenvironment, particularly their role in T-cell activation, is essential for cancer research.
Purpose of the Study:
- To investigate the role of specific PTMs in cancer.
- To explore the correlation between PTMs and T-cell responses within the cancer microenvironment.
- To compare methodologies for PTM determination and assess their utility for biomarker and therapeutic target discovery.
Main Methods:
- Review and comparison of immunoblotting, mass spectrometry, and ELISA assays for PTM analysis.
- Analysis of existing literature on PTMs in cancer and their association with T-cell modulation.
- Evaluation of the strengths and limitations of each analytical approach.
Main Results:
- PTMs play a significant role in cancer development and progression.
- Specific PTMs are correlated with T-cell activation and inhibition in the tumor microenvironment.
- Immunoblotting, mass spectrometry, and ELISA offer complementary approaches for PTM detection, each with distinct advantages and disadvantages.
Conclusions:
- PTMs are vital targets for understanding cancer pathology and developing novel therapeutic strategies.
- The comparative analysis of PTM detection methods provides insights into their application for identifying reliable biomarkers and therapeutic targets.
- Future developments in PTM analysis promise enhanced diagnostic, prognostic, and therapeutic monitoring capabilities in oncology.
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