Immunodetection of latex antigens

Area of Science:

• Immunology
• Biochemistry
• Materials Science

Background:

• Latex protein antigens can trigger Type I hypersensitivity reactions.
• Traditional methods for latex antigen detection include protein assays, HPLC, RAST inhibition, and skin tests.
• Development of specific assays is crucial for managing latex allergies.

Purpose of the Study:

• To evaluate a mouse monoclonal antibody (CRI-C) for detecting latex antigens.
• To compare the efficacy of a novel biotinylated ELISA (BiC ELISA) with existing methods.

Main Methods:

• A mouse monoclonal antibody (CRI-C) was generated against ammoniated latex.
• Medical gloves were extracted and analyzed using standard protein assays, RAST inhibition, and a BiC ELISA.
• Assays were validated using reference proteins and sera from allergic individuals.

Main Results:

• The Bradford and bicinchoninic acid assays showed the best correlation among protein assays.
• The BiC ELISA and RAST inhibition assays correlated with protein assays but demonstrated higher specificity.
• Protein was detected in vinyl gloves by OD280, BCA, and Bradford methods.

Conclusions:

• The BiC ELISA provides an easy, reproducible in vitro method for quantifying relevant latex antigens.
• Further clinical validation is necessary to confirm the utility of the BiC ELISA in diagnosing latex allergy.