Precision silver carp allergy profiling and rapid IgE epitope mapping by a microfluidic chip-MALDI-TOF MS system and...

Area of Science:

• Food Allergy Research
• Immunology
• Analytical Chemistry

Background:

• Food allergies are a growing global health concern.
• Accurate identification of specific allergens is crucial for effective personalized immunotherapy.
• Current diagnostic methods may lack the precision needed for individualized treatment.

Purpose of the Study:

• To develop a precision diagnostic test for identifying patient-specific fish allergens and IgE epitopes.
• To utilize an integrated microfluidic chip-Mass Spectrometry (MS) system for enhanced allergen detection.
• To establish a foundation for personalized allergy immunotherapy development.

Main Methods:

• Functionalization of magnetic beads with anti-human immunoglobulin E (IgE) antibodies and patient serum.
• Utilizing a microfluidic chip to capture allergenic proteins from silver carp extracts.
• Characterization of captured allergens and epitopes using MALDI-TOF MS and peptide mass fingerprinting.

Main Results:

• Identification of ten potential allergens in silver carp, with nine being novel.
• Prediction and experimental validation of IgE epitopes using computational tools and the developed system.
• ELISA confirmed high parvalbumin content, a known fish allergen.

Conclusions:

• The microfluidic chip-MALDI-TOF MS system enables precise identification of patient-specific allergens and IgE epitopes.
• This technology offers a promising approach for personalized fish allergy diagnosis.
• The findings support the development of tailored immunotherapy strategies for food allergies.