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A rapid objective immunofluorescence microassay. Application for detection of surface and intracellular antigens

L Pitzurra1, E Blasi, A Bartoli

  • 1Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Italy.

Journal of Immunological Methods
|December 31, 1990
PubMed

Insights

A new automated immunofluorescence microassay allows for simple, rapid, and objective detection of cellular antigens. This method enables reliable identification of both surface and intracellular proteins, enhancing diagnostic capabilities.

Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Detection of cellular antigens is crucial for diagnostics and research.
  • Traditional immunofluorescence methods can be time-consuming and subjective.
  • Need for a rapid, objective, and automated assay for antigen detection.

Purpose of the Study:

  • To develop and validate an automated indirect immunofluorescence microassay.
  • To assess the assay's suitability for detecting surface and intracellular antigens.
  • To evaluate the assay's simplicity, speed, and objectivity.

Main Methods:

  • Cells were fixed with glutaraldehyde and stored.
  • Standard indirect immunofluorescence staining with primary and fluorescein-conjugated secondary antibodies was performed.
  • Automated reading and quantitative evaluation of fluorescence intensity using Titertek Fluoroskan II.

Main Results:

  • The microassay demonstrated simple, rapid, and objective detection of antigens.
  • Successful detection of the surface MAC1 antigen was achieved.
  • Intracellular v-myc protein detection in the GG2EE macrophage cell line was successful.

Conclusions:

  • The automated immunofluorescence microassay is a viable method for antigen detection.
  • The assay offers advantages in speed, objectivity, and automation.
  • This technique is applicable for detecting both surface and intracellular antigens in cell lines.

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