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Related Experiment Videos

Characteristic shape and surface changes in epithelial transformation.

C A Heckman, A E Campbell, B Wetzel

    Experimental Cell Research
    |March 1, 1987
    PubMed
    Summary

    Epithelial cells undergoing transformation exhibit consistent changes in shape and surface configuration. These biophysical alterations, including a steeper rise from the substrate and a smoother cell perimeter, are detectable through geometrical analysis.

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    Area of Science:

    • Cell Biology
    • Biophysics
    • Cancer Research

    Background:

    • Epithelial transformation is associated with alterations in cellular structures.
    • Understanding biophysical changes during transformation is crucial for cancer research.

    Purpose of the Study:

    • To investigate consistent biophysical changes in epithelial cells during in vitro transformation.
    • To correlate cellular shape and surface configuration changes with tumorigenesis.

    Main Methods:

    • Analysis of cell shape using geometrical descriptors derived from reflected light interference microscopy.
    • Digitization of interference contours and computer-based calculation of descriptor values.
    • Longitudinal study of rat liver and respiratory tract epithelial cell lines over 11-15 months, tracking transformation to tumorigenicity.

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    Main Results:

    • Statistically significant, time-dependent changes in geometrical descriptors were observed (p < 0.0001).
    • Common structural revisions included cells rising at a steeper angle from the substrate and a less complex, 'smoother' cell perimeter.
    • These surface changes, indicative of altered cell structure during transformation, were observed in both liver and respiratory cell lines.

    Conclusions:

    • Cellular structure is consistently altered during epithelial transformation.
    • Biophysical measurements of cell shape and surface configuration provide a novel method for detecting transformation.
    • These findings offer new insights into the physical basis of cellular changes during tumorigenesis.