A monoclonal antibody-based immunoassay for human lactoferrin

Area of Science:

• Immunology
• Biochemistry

Background:

• Lactoferrin is a key iron-binding protein with diverse biological functions.
• Accurate measurement of serum lactoferrin is crucial for various diagnostic and research applications.

Purpose of the Study:

• To develop and optimize a sensitive sandwich enzyme-linked immunoassay for measuring human serum lactoferrin.
• To characterize the epitopes on human lactoferrin recognized by monoclonal antibodies.

Main Methods:

• Generation and characterization of monoclonal antibodies against human lactoferrin.
• Optimization of a sandwich enzyme-linked immunoassay using distinct monoclonal antibodies.
• Measurement of serum lactoferrin in a cohort of healthy adults.

Main Results:

• Monoclonal antibodies identified 3-6 distinct epitopes on human lactoferrin.
• The optimized immunoassay demonstrated effective measurement of serum lactoferrin.
• The mean serum lactoferrin concentration in healthy adults was determined to be 0.54 +/- 0.26 µg/ml.

Conclusions:

• A highly specific and optimized sandwich immunoassay for serum lactoferrin measurement has been established.
• The developed assay provides a reliable method for quantifying lactoferrin levels in human serum.
• This assay can be valuable for research and clinical diagnostics involving lactoferrin.