Automated topographical cell proliferation analysis

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Abstract

Background: Cell proliferation is often studied using the incorporation of bromodeoxyuridine (BrdU). Immunohistochemical staining is then used to detect BrdU in the nucleus. To circumvent the observer bias and labor-intensive nature of manually counting BrdU-labeled nuclei, an automated topographical cell proliferation analysis method is developed. Methods: Sections stained with fluorescein-labeled anti-BrdU and counterstained with To-Pro-3 are scanned using confocal laser scanning microscopy (CLSM). For every point in the image, the nucleus density of BrdU-labeled nuclei and the total nucleus density of the neighborhood of that point are calculated from the BrdU and the To-Pro-3 signal, respectively. The ratio of these densities gives an indication of the amount of cell proliferation at that point. The automated measure is validated by comparing it with the ratio of BrdU-stained nuclei to the total number of nuclei obtained from a manual count. Results: A positive correlation is found between the automated measure and the ratios calculated from the manual counting (r = 0.86, P < 0.001). Calculating the topographical cell proliferation using the automated method is faster and does not suffer from interobserver variability. Conclusions: Automated topographical cell proliferation analysis is a fast method to objectively find differences in cell proliferation within a tissue. This can be visualized by a topographical map that corresponds to the tissue under study. © 2001 Wiley-Liss, Inc.

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APA

Van Raaij, E. J., Ten Berge, D., Hage, W., Brouwer, A., Meijlink, F., Antoine Maintz, J. B., & Verbeek, F. J. (2001). Automated topographical cell proliferation analysis. Cytometry, 45(1), 13–18. https://doi.org/10.1002/1097-0320(20010901)45:1<13::AID-CYTO1139>3.0.CO;2-8

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