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Reduced L-selectin expression identifies tumor-specific type 1 T cells.

Vaccine Weekly

| August 04, 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 AUG 4 - (NewsRx.com & NewsRx.net) -- Reduced L-selectin (CD62L[superscript]Low) expression identifies tumor-specific type 1 T cells from lymph nodes draining an autologous tumor cell vaccine.

"Reduced expression of CD62L can identify tumor-specific T cells in lymph nodes draining murine tumors. Here, we examined whether this strategy could isolate tumor-specific T cells from vaccinated patients. Tumor vaccine-draining lymph node (TVDLN) T cells of seven patients were separated into populations with reduced (CD62L[superscript]Low) or high levels of CD62L (CD62L[superscript]High)," scientists writing in the journal Cellular Immunology report.

"Effector T cells generated from CD62L[superscript]Low cells maintained or enriched the autologous tumor-specific type 1 cytokine response compared to unseparated TVDLN T cells in four of four patients showing tumor-specific cytokine secretion," stated Sybren L. Meijer and collaborators at the Providence Portland Medical Center. "Interestingly, effector T cells generated froth CD62L[superscript]Low or CD62L[superscript]High TVDLN were polarized towards a dominant type 1 or type 2 cytokine profile, respectively. For CD62L[superscript]Low T cells the type 1 cytokine profile appeared determined prior to ...

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Source: HighBeam Research, Reduced L-selectin expression identifies tumor-specific type 1 T...

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