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The effect of extracellular matrix interactions on morphologic transformation in vitro
K J Pienta1, B C Murphy, R H Getzenberg
1Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD.
Biochemical and Biophysical Research Communications
|August 30, 1991
Summary
Tumor cells secrete extracellular matrices that alter normal kidney cell structure. Basement membrane from tumor cells induced a transformed cell phenotype, unlike matrices from normal cells.
Area of Science:
- Cell Biology
- Extracellular Matrix Research
- Cancer Cell Biology
Background:
- Cell structure and function are influenced by interactions with the extracellular matrix (ECM).
- Understanding how ECM composition affects cell behavior is crucial in cell biology and disease research.
Purpose of the Study:
- To investigate the impact of ECM secreted by normal and tumor cells on the structure of normal rat kidney epithelial cells.
- To determine if tumor-derived ECM possesses unique properties that influence normal cell morphology and phenotype.
Main Methods:
- Normal rat kidney epithelial cells were cultured on basement membranes secreted by either normal or tumor cells.
- Cell morphology and phenotype were analyzed and compared to Kirsten-ras transformed cells.
- Cells were also plated on individual ECM components and normal placenta-derived basement membrane for comparison.
Main Results:
- Normal rat kidney cells cultured on tumor cell-secreted basement membrane exhibited a morphology and phenotype resembling Kirsten-ras transformed cells.
- This morphologic transformation was not observed when cells were cultured on individual ECM components or basement membrane from normal placenta.
- These findings indicate specific, transformative properties within tumor-derived basement membranes.
Conclusions:
- Tumor-derived basement membranes contain unique components or structures that can induce significant morphologic and phenotypic changes in normal epithelial cells.
- These findings suggest a potential role for tumor ECM in driving cancer progression and cellular transformation.