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Lentiviral vector encoding NY-ESO-1 induces effective CTL response.

Vaccine Weekly

| March 31, 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 MAR 31 - (NewsRx.com & NewsRx.net) -- Intravenous injection of a lentiviral vector encoding NY-ESO-1 induces an effective cytotoxic T lymphocyte (CTL) response.

"Lentiviral vectors can efficiently transduce a variety of nondividing cells, including antigen-presenting cells (APCs). We assessed the immunogenicity of a lentiviral vector encoding the melanoma antigen NY-ESO-1 in HLA-A2 transgenic mice. Direct iv injection of NY-ESO-1 lentivirus induced NY-ESO-1[subscript]157-165-specific CD8+ cells, detected ex vivo with an A2/H-2K[superscript]b chimeric class I tetramer. These NY-ESO-1(157-165-specific) CD8+ cells could be expanded by boosting with an NY-ESO-1 vaccinia virus and could kill NY-ESO-1[subscript]157-165 peptide-pulsed targets in vivo," scientists writing in the Journal of Immunology report.

"Such direct lentiviral vector injection was similar in potency to the injection of in vitro-transduced dendritic cells (DC)," said Michael J. Palmowski and collaborators at John Radcliffe Hospital in Oxford and University College in London. "In addition, human monocyte-derived DC transduced by the NY-ESO-1 lentivirus stimulated an ...

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Source: HighBeam Research, Lentiviral vector encoding NY-ESO-1 induces effective CTL response.

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