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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
Summary
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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