The analysis of hantavirus S gene in Apodemus agrarius in Changbai area / 病毒学报

To gain more insights into epidemiologic characteristics and genotype of hantavirus in Apodemus agrarius in Changbai Area. Complete hantavirus S segment sequences were amplified by RT-PCR and sequenced. The phylogenetic trees were constructed for analysis of genetic characters of hantavirus. A total of 58 Apodemus agrarius were trapped in the epidemic areas, and complete hantavirus S segment sequences were obtained from 4 lung samples of these rodents (6. 90%0). Phylogenetic analysis of the four S segment sequences indicated that all viruses isolated from Apodemu sagrarius were closely related to genotype 6 of Hantaan virus (95. 8%-96. 3%, nucleotide identity; 98. 6%-99. 5%, amino acid identity), all of them had a specific S387 different from other genotypes of Hantaan virus.

Immune response induced by human cytomegalovirus DNA vaccine / 病毒学报

Human cytomegalovirus is an important pathogen which widely infects human. In this study, an eukaryotic expression vector containing human cytomegalovirus gB680 and pp65m genes was injected into BALB/c mice to explore the immune response. Firstly, the recombinant plasmid pVAX1/gB680+pp65m and plasmid pVAX1 were transfected into COS-7 cells respectively and the transiently expressed product was detected by RT-PCR and Western blot. The maxiprepared plasmid pVAX1/gB680 + pp65m and pVAX1 by alkaline lysis with SDS and purified by Sepharose 4FF column chromatography were then used to immunize BALB/c mice and the humoral and cellular immune responses were determined. Recombinant plasmid pVAX1/gB680+pp65m could be expressed in COS-7 cells, and could induce antibodies and cellular immune responses in BALB/c mice.