Protein Responsible For The Spread Of Lung Cancer Uncovered

Category: Cancer News
Friday, January 02, 2009 at 5:59:29 PM
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Scientists at the University of California, San Diego School of Medicine claim that they have identified a protein produced, that enhances the spread of lung cancer by stimulating the activity of inflammatory cells.

The researchers said that their work may be helpful in gaining a deeper understanding as to how advanced cancer cells usurp components of the host innate immune system to generate an inflammatory microenvironment hospitable for the metastatic spread of lung cancer.


That, in turn, could result in a therapy to limit metastasis of lung cancer, added the researchers.

Lead researcher Michael Karin, UC San Diego Distinguished Professor of Pharmacology and Pathology, said that his team used a straightforward biochemical approach to identify proteins produced by metastatic cancer cells, which are responsible for generation of an inflammatory microenvironment that supports the growth of metastases.

He said that the team focused on macrophages, white blood cells that are key players in the immune response to foreign invaders as well as in cancer growth and progression, and screened for factors produced by metastatic cancer cells in mice that could stimulate the activity of this inflammatory cell type.

He said that the study revealed that a highly metastatic cell line called Lewis lung carcinoma (LLC) showed particularly potent activation of macrophages.

Karin further said that macrophage activation was mediated by a secreted protein.

The researchers said that biochemical purification of proteins secreted by LLC cells resulted in identification of an extracellular matrix protein called versican as the major macrophage activator and metastasis enhancing factor.
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