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Fibroblasts contribute to melanoma tumor growth, say Moffitt Cancer Center researchers
Date:1/5/2012

TAMPA, Fla. -- Fibroblasts, cells that play a role in the structural framework of tissues, play an apparent role in melanoma tumor growth. Fibroblasts also contribute to melanoma drug resistance and may also facilitate the "flare" response when a tumor's metabolism is enhanced following a patient being removed from a targeted therapy, said researchers at Moffitt Cancer Center in Tampa, Fla.

Alexander R. Anderson, Ph.D., co-director of Integrative Mathematical Oncology at Moffitt, and Moffitt Comprehensive Melanoma Research Center member Keiran S. Smalley, Ph.D., along with colleagues from the Wistar Institute in Philadelphia, investigated the role of fibroblasts in melanoma progression and published their findings in a recent issue of Molecular Pharmaceutics.

"A role for fibroblasts in cancer progression has long been suspected," explained Anderson, who works with mathematical models of cancer to investigate tumor cell- microenvironment interactions. "In this study, we used an integrated mathematical and experimental approach to investigate whether melanoma cells recruit, activate and stimulate fibroblasts to deposit certain proteins known to be pro-survival for melanoma cells."

Fibroblasts are the most common of connective tissues, and they function to synthesize the "extra cellular matrix" of cells and collagen, the structural framework also called "stroma" for tissues.

The researchers knew that fibroblasts were drawn to cancer cells and that they became activated by cancer cells. They also knew that different cancer cell lines have varying capabilities for recruiting and stimulating fibroblasts. An expectation has been that aggressive cancers stimulate fibroblasts more than do less aggressive cancers.

When they investigated the relationship between fibroblasts and tumors using mathematical models, the research team came up with some unexpected findings.

Anderson and Smalley expected the fibrob
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Contact: Ferdie De Vega
Ferdinand.DeVega@moffitt.org
813-745-7858
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

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