Anti-Tumor Efficacy Induced by Antibodized PDTRP Gene Immunization
- VernacularTitle:MUC1肿瘤抗原表位PDTRP基因免疫诱导的体内外抗瘤效应
- Author:
Mingcan XIA
;
Yi LIN
;
Sidong XIONG
;
Yiwei CHU
- Publication Type:Journal Article
- Keywords:
MUC1;
?lneo-PDTRP gene immunization;
immune protection
- From:
Chinese Journal of Cancer Biotherapy
1995;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the anti-tumor efficacy induced by antibodized tumor epitope PDTRP gene immunization. Methods: Three copies of tumor associate gene PDTRP from MUCI tandem repeats were designed and mimicked the conformation of MUCI by Insight Ⅱ . The ?lneo-PDTRP plasmid was further constructed, in which the PDTRP target gene was inserted into CDR3 of the ?1 -neo vector. The specific humoral and cellular immune responses towards to PDTRP were detected after intraspleen immunized Balb/c mice with "ylneo-PDTRP. And the immune protection assay was also done to observe whether the mice immunized with ?lneo-PDTRP could prolong the survival after tumor challenge. Results: The conformation of three copies of PDTRP mimicked the conformation of MUCI tandem repeats. The expression of ?lneo-PDTRP could be detected after in vitro transfect. The specific antibody against PDTRP epitope could be induced and increase to a higher titer after intraspleen injection with a ?lneo-PDTRP plasmid. And the specific proliferation and cytotox-ic function of lymphocyte were also increased. There is a significant survival from mice immunized with ?lneo-PDTRP a-gainst the 4T1-PDTRP tumor challenge. Conclusions: Gene immunization with ?lneo-PDTRP could elicit both humoral and cellular tumor specific immune response and had the protective effect.
