Investigation on the anti-tumor effect and mechanisms of the glycosyl phosphatidylinositol modified routine IL-21 tumor vaccine
- VernacularTitle:糖基化磷脂酰肌醇修饰的小鼠IL-21瘤苗抗肿瘤效应及其机制初探
- Author:
Fengshu ZHAO
;
Lili CHU
;
Jun DOU
;
Quan TANG
;
Yongfang WANG
;
Yun WU
;
Minggang CAO
;
Meng PAN
;
Ning GU
- Publication Type:Journal Article
- Keywords:
Murine IL-21;
Glycosyl phosphatidylinositol;
Anti-tumor immunity
- From:
Chinese Journal of Microbiology and Immunology
2008;28(9):822-827
- CountryChina
- Language:Chinese
-
Abstract:
Objective To construct the murine IL-21 (mIL-21) tumor vaccine modified by glyco-syl phosphafidylinositol(GPI), and to evaluate its anti-tumor effect and mechanisms. Methods The IL-21-GPI gene was acquired by overlap PCR and inserted into PeDNA3.1. The recombinant plnsmid pcDNA3.1/ IL-21-GPI was transformed into cell B16F10, and the expression of mIL-21 on cell membrane was deter-mined by cell indirect immumofluorescence and flow cytometry (FCM). The bioactivity of mIL-21 was iden-tiffed according to its effects on the proliferation of mouse spleen cells. The anti-tumor effect was evaluated depending on the tumor size and the survival of tumor-beating mice after the tumor vaccine was inoculated into C57BL/6 mice. And the activity of cell-mediated immunity in immunized mice was detected at the same time. Results The recombinant plasmid pcDNA3.1/IL-21-GPI was correctly constructed, which could ex-press mIL-21 binding the membrane with good bioactivity. The vaccine had good anti-tumor effect, and the cell-mediated immunity had been improved in immunized mice. Conclusion The GPI modified mIL-21 tumor vaccine with anti-tumor activity was constructed successfully, which provided a good foundation for studying anti-tumor immunity and therapy in future.
