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University of Maryland researchers identify fish protein that may inhibit cancer metastasis
Date:3/19/2013

nd that TFD100 binds to galectin-3, a protein that is overexpressed in prostate cancer cells, and blocks its interaction with the TFD antigen found on the surface of the cells. Galectin-3 (gal3) enables cancer cells to adhere to the walls of blood vessels and also kills activated T-cells, a type of white blood cell, which helps the cancer cells to spread throughout the body and evade the immune system. The researchers observed that TFD100 prevents cancer cells from attaching to the vessel walls, suppresses T-cell death and boosts the immune response.

"Because the gal3-TFD interaction is a key factor driving metastasis in most epithelial cancers, this high-affinity TFD100 should be a promising anti-metastatic agent for the treatment of various cancers, including prostate adenocarcinoma," the researchers conclude in the study, which was published online March 11 in PNAS' Early Edition.

"This research breaks new ground in our ongoing quest to discover new ways to prevent cancers from metastasizing to distant parts of the body," says E. Albert Reece, M.D., Ph.D., M.B.A., Vice President for Medical Affairs at the University of Maryland and the John Z. and Akiko K. Bowers Distinguished Professor and dean of the University of Maryland School of Medicine. "If we could one day offer patients a natural dietary supplement, derived from fish proteins, which could help to block that process, we could have a significant impact on improving patients' outcomes and survival."

Co-investigator Dhan V. Kalvakolanu, Ph.D., a professor of microbiology and immunology at the School of Medicine, notes that additional research is needed to develop a dietary supplement from the cod peptide that could complement chemotherapy and other standard treatments. "No single drug on its own is going to offer protection against advanced cancers. We need a multi-pronged approach to successfully treat this disease," he adds.

The study was conducted by researchers from
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Contact: Karen Warmkessel
kwarmkessel@umm.edu
410-328-8919
University of Maryland Medical Center
Source:Eurekalert

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