文献类型： 外文期刊

第一作者： Chen HongJun

作者： Chen HongJun;Zhang ChenFei;Song CuiPing;Deng XuFang;Qin AiJian;Chen HongJun;Song CuiPing

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期刊名称：SCIENCE IN CHINA SERIES C-LIFE SCIENCES （ 影响因子：1.61； 五年影响因子：1.148 ）

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收录情况： SCI

摘要： VP22 of Marek's disease virus serotype 1 (MDV-1) could function in protein transduction. In this study, an infectious bursal disease virus VP2 gene was fused to the carboxyl termini of VP22. It showed that the fusion protein did not spread into the bystander cells from the cells transfected with pVP22-VP2, as the VP22 alone could. The VP22 proteins were found to be translocated into all the nuclei in the neighboring COS-1 cells, as analyzed by a fluorescence assay. Although mice were immunized with the recombinant DNAs mixed with polyethylenimine (PEI) at a dose of 1:2, it failed to enhance the antibody response against IBDV VP2, as measured by the indirect ELISA assay, yet the cell mediated immune response was significantly increased. The ratio of CD8(+)/CD4(+) T cells was significantly increased in the immunized group with the fusion genes, compared with the group immunized with VP2 (P<0.05). Our results demonstrated that VP22 indeed enhances the cell-mediated response in the fused VP2 in a mice model system, possibly due to the fact that the IBDV VP2 could be carried into the surrounding cells at a limited level under pressure from MDV VP22.

分类号： Q1