Measurement of interferon-gamma by high-throughput fluorometric microvolume assay technology system

Area of Science:

• Immunology
• Biotechnology
• Assay Development

Background:

• Interferon gamma (IFN-gamma) is crucial for immune regulation.
• Accurate IFN-gamma measurement is vital for monitoring cancer vaccine trials.
• Traditional enzyme-linked immunosorbent assays (ELISA) can be time-consuming and costly.

Purpose of the Study:

• To develop a novel fluorescent-linked immunosorbent assay (FLISA) for IFN-gamma detection.
• To evaluate the performance and efficiency of the developed FLISA.
• To establish a high-throughput method for IFN-gamma quantification.

Main Methods:

• Development of a fluorescent-linked immunosorbent assay (FLISA).
• Quantification of IFN-gamma using FLISA with a linear dynamic range of 15.6-2000 pg/ml.
• Adaptation of the assay for 96- and 384-well plates and automation with a robotic arm.

Main Results:

• The FLISA accurately measures IFN-gamma concentrations.
• The assay demonstrates a wide linear dynamic range (15.6-2000 pg/ml).
• FLISA requires less antibody, eliminates washing steps, reducing time and cost compared to ELISA.

Conclusions:

• The developed FLISA is an accurate and efficient method for IFN-gamma measurement.
• FLISA offers reduced hands-on time and lower running costs.
• This assay is suitable for high-throughput screening of large sample volumes, potentially using fluorometric microvolume assay technology (FMAT).