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Expression profiling of epithelial plasticity in tumor progression
Martin Jechlinger1, Stefan Grunert, Ido H Tamir
1IMP, Research Institute for Molecular Pathology, Dr Bohrgasse 7, Vienna A-1030, Austria.
Oncogene
|October 17, 2003
Summary
Epithelial-to-mesenchymal transition (EMT) drives tumor metastasis. This study identified key genes and pathways regulating EMT and cell invasion by analyzing polysome-bound RNA in mammary epithelial cells.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Epithelial-to-mesenchymal transition (EMT) is crucial for tumor progression and metastasis.
- Understanding the molecular mechanisms of EMT is vital for developing anti-cancer therapies.
Purpose of the Study:
- To identify molecular regulators of EMT and metastasis.
- To investigate gene expression changes at the translational level during EMT.
Main Methods:
- Utilized combined in vitro/in vivo cellular models of mammary epithelial cells.
- Employed an improved expression profiling method analyzing polysome-bound RNA.
- Performed cluster analysis to identify genes correlating with EMT and metastasis.
Main Results:
- Identified a substantial fraction of genes regulated exclusively at the translational level.
- Discovered a small set of genes specifically regulated during EMT.
- Highlighted key regulators and signaling pathways involved in cell proliferation, polarity, survival, and invasion.
Conclusions:
- Translational control plays a significant role in EMT and metastasis.
- Specific genes and pathways identified are critical for understanding and targeting cancer progression.