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CD59 blockade enhances antigen-specific CD4+ T cell responses in humans: a new target for cancer immunotherapy?

Baalasubramanian, Sivasankar, Longhi, M. Paula, Gallagher, Kathleen M. E., Betts, Gareth J., Morgan, Bryan Paul, Godkin, Andrew James and Gallimore, Awen Myfanwy 2009. CD59 blockade enhances antigen-specific CD4+ T cell responses in humans: a new target for cancer immunotherapy? The Journal of Immunology 182 (9) , pp. 5203-5207. 10.4049/jimmunol.0804243

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Abstract

CD59, a broadly expressed GPI-anchored molecule, regulates formation of the membrane attack complex of the complement cascade. We previously demonstrated that mouse CD59 also down-modulates CD4+ T cell activity in vivo. In this study, we explored the role of CD59 on human CD4+ T cells. Our data demonstrate that CD59 is up-regulated on activated CD4+ T cells and serves to down-modulate their activity in response to polyclonal and Ag- specific stimulation. The therapeutic potential of this finding was explored using T cells isolated from colorectal cancer patients. The findings were striking and indicated that blockade of CD59 significantly enhanced the CD4+ T cell response to two different tumor Ags. These data highlight the potential for manipulating CD59 expression on T cells for boosting weak immune responses, such as those found in individuals with cancer.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QR Microbiology > QR180 Immunology
R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
Publisher: American Association of Immunologists
ISSN: 0022-1767
Last Modified: 09 Apr 2018 19:56
URI: http://orca-mwe.cf.ac.uk/id/eprint/29596

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