Dual-specific T cells combine proliferation and antitumor activity

被引:87
作者
Kershaw, MH [1 ]
Westwood, JA [1 ]
Hwu, P [1 ]
机构
[1] NCI, Ctr Canc Res, NIH, Bethesda, MD 20892 USA
关键词
D O I
10.1038/nbt756
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
An effective immune response against cancer requires the activation and expansion of specific T cells. Tumor antigens, however, are generally poor immunogens. To achieve expansion of tumor-reactive T cells in vivo, we used a strategy of generating dual-specific T cells that could respond to a powerful immunogen while also possessing tumor reactivity. We generated dual-specific T cells by genetic modification of alloreactive T cells with a chimeric receptor recognizing folate-binding protein, an ovarian cancer-associated antigen. Mouse dual-specific T cells responded in vitro to both allogeneic antigen and tumor cells expressing folate-binding protein, and expanded in number in vivo in response to immunization with allogeneic cells. Most importantly, the combination of dual-specific T cells and immunization had an antitumor effect in vivo. We also generated human dual-specific T cells and characterized the dual-specific nature of individual clones. Assigning the tasks of expansion and tumor reactivity to different receptors within the same lymphocyte may help to overcome the problem of poor immunogenicity of tumor antigens.
引用
收藏
页码:1221 / 1227
页数:7
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