Detection of Post-translational Modifications on MYC

Area of Science:

• Biochemistry
• Molecular Biology
• Cancer Research

Background:

• Post-translational modifications (PTMs) of c-Myc are vital for assessing its status in cancer.
• Detecting c-Myc PTMs, especially phosphorylation, is challenging due to limitations of current antibodies.
• Existing methods struggle with reliable detection of phosphorylated c-Myc in various sample types.

Purpose of the Study:

• To establish robust protocols for detecting c-Myc post-translational modifications.
• To overcome challenges in evaluating c-Myc phosphorylation status.
• To develop improved methods for detecting ubiquitination and SUMOylation on c-Myc.

Main Methods:

• Immunoprecipitation of endogenous c-Myc to analyze PTMs.
• Development and application of novel antibodies for c-Myc detection.
• Optimization of immunofluorescence protocols for formalin-fixed paraffin-embedded tissues.

Main Results:

• Protocols for immunoprecipitation and detection of c-Myc phosphorylation, ubiquitination, and SUMOylation were established.
• A new rat monoclonal antibody was generated, demonstrating suitability for detecting phosphorylated c-Myc in FFPE tissues.
• Challenges in detecting phosphorylated c-Myc via immunofluorescence were addressed.

Conclusions:

• The developed protocols enhance the ability to assess c-Myc PTMs, aiding cancer research.
• The new antibody offers improved detection of phosphorylated c-Myc in challenging FFPE samples.
• These advancements provide valuable tools for understanding c-Myc's role in cancer biology.