Post-translationally modified T cell epitopes: immune recognition and immunotherapy

Area of Science:

• Immunology
• Biochemistry
• Molecular Biology

Background:

• Protein functionality is expanded by post-translational modifications (PTMs).
• Many PTMs are recognized by the immune system, with a substantial fraction of presented peptides being modified.
• Cellular mechanisms for PTMs differ between health and disease states.

Purpose of the Study:

• To investigate how post-translational modifications (PTMs) affect antigen recognition.
• To understand the implications of altered antigen presentation in disease.
• To explore the potential of PTMs in novel immunotherapy approaches.

Main Methods:

• Analysis of post-translationally modified peptides presented by the major histocompatibility complex (MHC).
• Comparative studies of PTMs in health versus disease conditions.
• Investigation of immune recognition of modified antigens.

Main Results:

• A significant proportion of peptides presented by MHC molecules in vivo are post-translationally modified.
• Altered PTMs in disease can change antigen presentation, potentially modifying immune responses.
• PTMs influencing antigen recognition provide insights into disease mechanisms.

Conclusions:

• Post-translational modifications (PTMs) play a critical role in immune recognition and antigen presentation.
• Dysregulation of PTMs in disease states can lead to altered immune responses.
• Understanding PTMs offers promising avenues for developing new immunotherapies for various diseases.