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Peptides immunogenic for HLA-A2+ cancer patients identified.

Vaccine Weekly

| July 14, 2004 | COPYRIGHT 2004 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2004 JUL 14 - (NewsRx.com & NewsRx.net) -- Scientists have identified epidermal growth factor receptor-derived peptides immunogenic for HLA-A2+ cancer patients.

According to published research from Japan, "Epidermal growth factor receptor (EGFR) is one of the most appropriate target molecules for cancer therapy because of its relatively high expression in about one-third of all epithelial cancers in correlation with neoplasmic progression. With respect to EGFR-targeted therapies, antibodies and tyrosine-kinase inhibitors have been intensively studied, a novel EGFR-tyrosine-kinase inhibitor ZD1839 has been approved as an anticancer drug, and many other agents are now under clinical trial. In addition, cytotoxic T lymphocyte (CTL)-directed epitope peptides could be another class of compounds useful in EGFR-targeted therapies."

"However, there is presently no information on CTL-directed peptides of EGFR," said H. Shomura and collaborators at Kurume University and Hokkaido University. "Therefore, from the viewpoint of development of peptide-based cancer therapy, this study was intended to determine the EGFR-derived peptides recognized by both cellular and humoral immunities in HLA-A2+ epithelial cancer patients."

The researchers reported, "We herein report finding of two such types of EGFR-derived peptides at ...

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