Whole-slide, quadruple immunofluorescence labeling of routinely processed paraffin sections

Serena Buscone1, Maria C Argentieri, Daniela Pilla

  • 1*Department of Pathology, Universitá degli Studi di Milano-Bicocca †Azienda Ospedaliera San Gerardo, Monza, Milano, Italy.

Insights

This study demonstrates that 4-color immunofluorescence whole-slide images (IF WSI) can be generated from routine tissues using a commercial scanner. This digital pathology advancement offers diagnostic potential for immunofluorescence techniques.

Area of Science:

  • Digital Pathology
  • Histopathology
  • Immunofluorescence Imaging

Background:

  • Whole-slide images (WSI) are standard in diagnostic histopathology and immunohistochemistry.
  • Immunofluorescence (IF) techniques are selectively used in diagnostics (e.g., renal, cutaneous pathology) and largely absent from digital pathology.
  • Quantitative immunopathology is an exception to the exclusion of IF from digital pathology.

Purpose of the Study:

  • To assess a commercial fluorescent slide scanner's capability for producing 4-color IF WSI from routinely processed tissues.
  • To evaluate the feasibility of integrating IF into digital pathology workflows.

Main Methods:

  • Utilized a commercial fluorescent slide scanner.
  • Employed minor scanner modifications.
  • Carefully matched filters and fluorochromes for optimal signal detection.
  • Processed routinely available tissue samples.

Main Results:

  • Successfully generated 4-color IF WSI from routine tissues.
  • Achieved negligible autofluorescence.
  • Demonstrated good sensitivity and diagnostic power of the generated IF WSI.
  • Validated the use of standard materials for IF WSI production.

Conclusions:

  • 4-color IF WSI can be reliably obtained from routine tissues using commercial scanners with appropriate adjustments.
  • This technique holds significant potential for advancing diagnostic capabilities in digital pathology for IF applications.
  • The generated IF WSI possess diagnostic power comparable to traditional methods.

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