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Growth factors in melanoma
Cancer Metastasis Reviews
|June 1, 1991
Summary
Human melanoma cells secrete various growth factors, unlike normal melanocytes. Some factors, like basic fibroblast growth factor (bFGF) and melanoma growth stimulatory activity (MGSA), promote melanoma cell growth, while others may affect the tumor microenvironment.
Area of Science:
- Oncology
- Cell Biology
- Molecular Biology
Background:
- Human melanoma cells in culture produce numerous polypeptide growth factors.
- Normal melanocytes express limited growth factors, suggesting tumor-associated production in melanoma.
Purpose of the Study:
- To compare growth factors produced by melanoma cells versus normal melanocytes.
- To investigate the role of secreted growth factors in melanoma autocrine and paracrine signaling.
Main Methods:
- Analysis of polypeptide growth factor production by human melanoma cells in culture.
- Comparison of growth factor expression profiles between melanoma cells and normal melanocytes.
- Review of existing evidence on autocrine and paracrine functions of melanoma-derived growth factors.
Main Results:
- Melanoma cells secrete basic fibroblast growth factor (bFGF), platelet-derived growth factor (PDGF)-A/B, transforming growth factor (TGF)-alpha/beta, interleukin (IL)-1 alpha/beta, and melanoma growth stimulatory activity (MGSA).
- Normal melanocytes primarily express TGF-beta 1 and MGSA.
- bFGF and MGSA are implicated in melanoma cell autocrine growth stimulation.
Conclusions:
- Melanoma cells exhibit aberrant growth factor production compared to normal melanocytes.
- Secreted growth factors like bFGF and MGSA play a role in melanoma autocrine signaling.
- Melanoma-derived growth factors likely exert paracrine effects on the tumor stroma, influencing angiogenesis, tissue remodeling, and cell interactions.