Allergen micro-bead array for IgE detection: a feasibility study using allergenic molecules tested on a flexible...

Area of Science:

• Immunology
• Allergy Diagnostics
• Biotechnology

Background:

• Allergies are prevalent global non-infective diseases.
• Advancements in allergy diagnostics include using allergenic molecules and multiplex testing technologies.
• IgE-mediated sensitizations are a key focus in allergy research.

Purpose of the Study:

• To establish and validate a flow cytometric bead array system (ABA) for multiplex detection of specific IgE to allergenic molecules.
• To demonstrate the feasibility of the ABA system as a diagnostic tool for identifying IgE reactivity against specific allergens.

Main Methods:

• Coupling of allergenic molecules to micro-beads to create the Allergenic Molecule-based micro-bead Array (ABA) system.
• Testing of 336 patient sera against 16 selected allergens using ABA, with comparison to the ISAC microarray system.
• Utilizing allergen-specific polyclonal and monoclonal antibodies for initial assay verification.

Main Results:

• Successful coupling of allergenic molecules (nDer s 1, nPen m 1, nPru p 3) verified by antibody binding.
• ABA assay demonstrated detection of specific IgE to a panel of 16 allergens.
• ABA IgE testing results showed high correlation with ISAC testing (r = 0.87, p<0.0001).

Conclusions:

• The ABA assay is a flexible and effective method for multiplex IgE detection using allergenic molecules.
• The ABA system is suitable for detecting various human and non-human immunoglobulins.
• This technology offers a promising advancement in allergy diagnostics.