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Focus Formation: A Cell-based Assay to Determine the Oncogenic Potential of a Gene
08:18

Focus Formation: A Cell-based Assay to Determine the Oncogenic Potential of a Gene

Published on: December 31, 2014

Transformation by RAS oncogene decreases the width of substrate-spread fibroblasts but not their length

Margarita A Kharitonova1, Pavel B Kopnin, Jury M Vasiliev

  • 1Institute of Carcinogenesis, Cancer Research Center of Russian Federation, Kashirskoye shosse 24, 115478 Moscow, Russian Federation. ritasarc@mail.ru

Cell Biology International
|December 5, 2006
PubMed

Insights

RAS oncogene transformation significantly reduces cell area but not projection length in mouse and rat fibroblasts. This indicates a selective impact on transversal spreading, increasing cell polarity.

Area of Science:

  • Cell biology
  • Oncology
  • Biophysics

Background:

  • Cell transformation is a key event in cancer development.
  • RAS oncogenes are frequently implicated in various cancers.
  • Understanding morphometric changes aids in characterizing transformed cells.

Purpose of the Study:

  • To compare morphometric parameters of non-transformed and RAS-transformed mouse and rat cell lines.
  • To investigate the specific effects of RAS oncogene transformation on cell shape and spreading.

Main Methods:

  • Comparative analysis of cell contours.
  • Morphometric measurements of cell area and projection length.
  • Utilizing four pairs of mouse and rat cell lines, both non-transformed and RAS-transformed.

Main Results:

  • RAS-transformed cell lines exhibited significantly smaller mean areas compared to non-transformed counterparts.
  • The average length of cell projections did not show a consistent decrease after RAS transformation.
  • Transformation selectively affected transversal spreading, not longitudinal spreading.

Conclusions:

  • RAS oncogene expression selectively impacts transversal cell spreading.
  • Transformed fibroblasts display altered morphometric properties, including increased antero-posterior polarity.
  • These findings contribute to understanding the biophysical basis of oncogenic transformation.

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