| 论文题目: | Retargeting NK-92 for anti-melanoma activity by a TCR-like single-domain antibody |
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| 作者: | Zhang Ge, Liu Rongzhi, Zhu Xuekai, Wang Lei, Ma Juan, Han Huamin, Wang Xiaomin, Zhang Ganlin, He Wen, Wang Wei, Liu Changzhen, Li Shenghua, Sun Meiyi, Gao Bin* |
| 联系作者: | Gao Bin* |
| 刊物名称: | Immunology and cell biology |
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| 年份: | 2013 |
| 影响因子: | 3.811 |
| 论文下载: | 下载地址 |
| 摘要: | The efficacy of immunotherapy based on natural killer (NK) cells is hampered by intrinsic non-specific cytotoxicity and insufficient activation of NK cells. Here, we confer the T-cell receptor-like (TCR-like) specificity on NK cells, taking advantage of both the innate and adaptive immune arms of the immune response to generate enhanced anti-melanoma activity. The TCR-like antibody (Ab) GPA7 was selected against melanoma-associated gp100/human leukocyte antigen (HLA)-A2 complex and then fused to intracellular domain of CD3-zeta chain. This fusion construct was incorporated into NK-92MI cell line and expressed as a chimeric antigen receptor on the surface of the cell. The anti-tumour activity of the transgenic NK-92MI-GPA7-zeta cell line was assessed against melanoma in vitro and in vivo. The engineered NK-92MI-GPA7-zeta cells could recognize melanoma cells in the context of HLA-A2 and showed enhanced killing of both melanoma cell lines and primary melanoma. Furthermore, adoptively transferred NK-92MI-GPA7-zeta cells significantly suppressed the growth of human melanoma in a xenograft model in mice. Collectively, these results demonstrate that the TCR-like Ab, GPA7, could redirect NK cells to target the intracellular antigen gp100 and enhance anti-melanoma activity, providing a promising immunotherapeutic strategy to prevent and treat melanoma.Immunology and Cell Biology advance online publication, 8 October 2013; doi:10.1038/icb.2013.45. |
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