Related Experiment Videos
Tumor metastasis and nm23: current concepts.
1Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892.
Cancer Cells (Cold Spring Harbor, N.Y. : 1989)
|July 1, 1991
Summary
Reduced nm23 expression correlates with increased tumor metastasis. Introducing nm23-1 cDNA into melanoma cells decreased tumor formation and spread, suggesting nm23
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Reduced expression or deletion of nm23 is linked to high metastatic potential in various rodent and human tumors.
- nm23 alterations are observed in breast and colorectal carcinomas.
Purpose of the Study:
- To investigate the role of nm23 in tumor metastasis and tumorigenesis.
- To explore the effect of nm23-1 cDNA transfection on melanoma cell behavior and responsiveness to transforming growth factor beta.
Main Methods:
- Transfection of murine nm23-1 cDNA into highly metastatic murine K-1735 TK melanoma cells.
- Assessment of primary tumor formation, metastatic potential, and cellular response to transforming growth factor beta.
Main Results:
- Transfection led to a reduced incidence of primary tumor formation.
- A significant reduction in tumor metastatic potential was observed.
- Altered responsiveness to transforming growth factor beta was noted in the transfected cells.
Conclusions:
- nm23 plays a crucial role in regulating tumor metastasis.
- nm23-1 gene transfer can suppress melanoma metastasis.
- Further research into nm23's biochemical functions and its role in tumorigenesis is warranted.