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Peptide-Based Vaccine Has Potential.(cancer vaccine)

Vaccine Weekly

| March 07, 2001 | COPYRIGHT 2001 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

2001 MAR 7 - (NewsRx.com & NewsRx.net) --

by Michelle Marble, staff medical writer -- Peptide mapping results in discovery of potential anticancer epitopes, researchers in England say.

"The human epithelial mucin MUCI is over-expressed in more than 90% of carcinomas of the breast, ovary, and pancreas as well as in some other tumors, making it a potential target for tumor immunotherapy," wrote L.C. Heukamp and colleagues, Guy's Hospital, London, in the International Journal of Cancer.

"We have identified several MUCI-derived peptides mapping outside the variable number tandem repeat region that comply with the peptide-binding motif for HLA-A*0201 and that become processed into stable major histocompatibility complex-peptide complexes as assessed by in vitro assays."

The researchers conducted their experiments in A2/K-b transgenic mice. They found three peptides, MUC79-87 (TLAPATEPA), MUC167-175 (ALGSTAPPV), and MUC264-272 (FLSFHISNL), that elicited peptide-specific cytotoxic T lymphocyte (CTL) immunity in these mice.

This immunity protected the mice against ...

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Source: HighBeam Research, Peptide-Based Vaccine Has Potential.(cancer vaccine)

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