[The infection of dendritic cells by recombinant adenoviral vector carrying HBsAg-HSP70 chimeric gene and its biological characteristics observations].

OBJECTIVE

To test the infeciton efficiency of recombinant adenoviral vector carrying HBsAg-HSP70 chimeric gene and to abserve its biological characteristics.

METHODS

Peripheral blood mononuclear cells (PBMC) were separated from healthy blood donor and they were infected by Ad-HSP70-HBsAg on the first day of isolation. DCs were induced in medium with cytokines IL-4, GM-CSF and TNF-alpha in vitro. The biological characteristics of DC induced were analyzed by inverted fluorecent microscope, RT-PCR, flow cytometer (FACS), and mixed lymphocyte reaction (MLR).

RESULTS

The traced gene-GFP were abserved in DCs by inverted fluorecent microscope and HSP70-HBsAg gene mRNA expression was detected by RT-PCR after the Ad-HSP70-HBsAg infection. FACS analysis shown that the expression of CD1a, CD80, CD86 and HLA-DR on surfece of two groups of DCs were similar. MLR showed that there are not a statitic difference of stimulated index (SI) between two groups.

CONCLUSION

Results indicated that Ad-HSP70-HBsAg can effectively infected DCs without affecting its biological characteristics.