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Vaccine for tumors secreting parathyroid hormone-related protein developed.

Vaccine Weekly

| September 10, 2003 | COPYRIGHT 2003 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

2003 SEP 10 - (NewsRx.com & NewsRx.net) -- A vaccine that shows promise against tumors, such as prostate cancer tumors, that secrete parathyroid hormone-related protein has been developed.

"Parathyroid hormone-related protein (PTH-rP), a secreted protein produced by prostate carcinoma and other epithelial cancers, is considered a key agent for the development of bone metastases. We investigated the construct GC90/IRIV, composed of immunopotentiating reconstituted influenza virosomes (IRIV) containing PTH-rP gene plasmids (GC90), as a potential tool for human anticancer immunotherapy into humanized mice transgenic for HLA-A(*) 02.01, the human-beta-2 microglobulin, and the human CD8-alpha molecule," scientists writing in the British Journal of Cancer report.

"Intranasal administration of GC90/IRIV resulted in the induction of a PTH-rP-specific multiepitope cytotoxic T-cell (CTL) response," said Antonio Scardino at INSERM U487 in France and collaborators in France, Italy, and Switzerland. "Cytotoxic T cells derived from vaccinated mice were capable of lysing in vitro syngenic murine PTH-rP transfectants and human HLA-A* 02.01+/PTH-rP+ ...

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Source: HighBeam Research, Vaccine for tumors secreting parathyroid hormone-related protein...

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