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Updated: Aug 20, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
Twist induces an epithelial-mesenchymal transition to facilitate tumor metastasis
Florian Karreth1, David A Tuveson
1Department of Cancer Biology, Abramson Family Cancer Research Institute, The Abramson Cancer Center at the University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104, USA.
Abstract:
Tumor metastasis-the spreading of primary tumor cells to distal organs - is the major cause of death of cancer patients. The metastatic process consists of four distinct steps, invasion, intravasation, extravasation, and metastatic growth, and primary tumor cells need to acquire different genetic characteristics to accomplish each step. The main players during the metastatic process remain, however, largely unknown. A recent report in Cell by Robert Weinberg's group (Yang et al., Cell 2004;117:927-39) adds the transcription factor Twist to the list of metastatis regulators. Suppression of Twist expression in tumor cells inhibits the metastatic potential, whereas its overexpression induces an epithelial-mesenchymal transition (EMT) in epithelial cells. This study provides direct evidence that EMT may be an essential process during metastasis and should appropriately stimulate further investigations of EMT in many laboratories.
Insights
The transcription factor Twist plays a key role in cancer metastasis, the spread of tumors. Its suppression inhibits metastasis, while its overexpression triggers epithelial-mesenchymal transition (EMT), a process crucial for tumor cell spread.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Tumor metastasis is the primary cause of cancer-related mortality.
- The molecular mechanisms driving metastasis are not fully understood.
- Key regulators of the metastatic process remain largely unidentified.
Purpose of the Study:
- To investigate the role of the transcription factor Twist in tumor metastasis.
- To determine if epithelial-mesenchymal transition (EMT) is essential for metastasis.
Main Methods:
- Studied the effect of Twist suppression and overexpression on tumor cell metastatic potential.
- Analyzed the induction of EMT by Twist in epithelial cells.
Main Results:
- Suppression of Twist expression significantly inhibited the metastatic capacity of tumor cells.
- Overexpression of Twist induced an epithelial-mesenchymal transition (EMT) in epithelial cells.
- Provided direct evidence linking EMT to the metastatic process.
Conclusions:
- The transcription factor Twist is a critical regulator of cancer metastasis.
- Epithelial-mesenchymal transition (EMT) is an essential process during tumor metastasis.
- Further research into EMT's role in metastasis is warranted.
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