Quantification of Porcine Complement Activation Fragment C3a by a Neoepitope-Based Enzyme-Linked Immunosorbent Assay

Area of Science:

• Biochemistry
• Immunology
• Veterinary Medicine

Background:

• Enzyme-linked immunosorbent assay (ELISA) is a widely used technique for quantifying analytes in biological samples.
• Complement activation is a critical component of the innate immune system, and its dysregulation is implicated in various diseases.
• Porcine C3a is a significant anaphylatoxin and a marker of complement system activation in pigs.

Purpose of the Study:

• To develop and validate a specific and sensitive ELISA for the detection of porcine C3a.
• To establish a reliable tool for assessing complement activation in porcine models.
• To provide a method for quantifying porcine C3a in the pico- to nanogram range within complex matrices.

Main Methods:

• Development of a sandwich ELISA utilizing a specific antibody pair targeting porcine C3a.
• Characterization of antibody specificity to ensure no cross-reactivity with native C3.
• Validation of the assay for sensitivity, specificity, and reproducibility.

Main Results:

• The developed ELISA demonstrated high specificity for porcine C3a, with no cross-reactivity to native C3.
• The assay achieved quantification in the pico- to nanogram range, suitable for detecting low analyte concentrations.
• The assay proved robust and reproducible for analyzing complex biological samples.

Conclusions:

• A novel and specific ELISA for porcine C3a has been successfully developed.
• This assay serves as a valuable tool for monitoring complement activation in pigs.
• The method enables precise quantification of porcine C3a, facilitating research in immunology and disease pathogenesis.