Related Experiment Videos
Basic fibroblast growth factor induces a transformed phenotype in normal human melanocytes
M Nesbit1, H K Nesbit, J Bennett
1Wistar Institute, Philadelphia, Pennsylvania, PA 19104, USA.
Oncogene
|December 22, 1999
Summary
Basic fibroblast growth factor (bFGF) upregulation drives melanoma progression. Overexpressing bFGF in normal melanocytes confers melanoma-like growth properties, independent of external growth factors.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Normal melanocytes require external basic fibroblast growth factor (bFGF) for growth, while most melanomas produce it internally.
- bFGF (also known as FGF-2) is implicated in melanoma development and progression.
Purpose of the Study:
- To investigate the role of bFGF overexpression in normal melanocyte transformation.
- To determine if bFGF upregulation is sufficient to induce melanoma-like characteristics.
Main Methods:
- Normal human melanocytes were transduced to overexpress bFGF (Long and Short forms) using adenovirus vectors.
- Cell growth, anchorage independence, and in vivo proliferation were assessed.
- Expression of different bFGF isoforms was analyzed.
Main Results:
- Overexpression of bFGF in normal melanocytes resulted in growth independent of exogenous bFGF, insulin, or cAMP enhancers.
- Transduced melanocytes exhibited anchorage-independent growth in soft agar, similar to melanoma cells.
- In vivo, bFGF-transduced melanocytes showed sustained proliferation in grafted human skin, unlike control cells.
Conclusions:
- Upregulation of bFGF is a critical factor in melanoma progression.
- bFGF overexpression can confer malignant growth properties to normal melanocytes.
- Targeting bFGF may be a therapeutic strategy for melanoma.