【摘要】 将昆明鼠随机分为A、B两组,分别肌肉注射含有猪轮状病毒(RV)JL94株VP7基因的重组真核表达质粒pcDNA＿VP7和真核表达载体pcDNA3 1(+),每只鼠100μg/100μL,共免疫3次,每次间隔2周。首次免疫第0、14、21、28、35、39、47、54d采血,检测血清抗体和外周血淋巴细胞中CD4+、CD8+T细胞的数量变化。A组小鼠血清在首免后第14d即可检出阳性抗体(P/N≥2 0)。A组与B组小鼠外周血CD4+、CD8+T细胞数量在首免后第14d开始有显著差异(P<0 05)。更多还原

【Abstract】 The Kunming mice used for nucleic acid immunization were divided into two groups.Group A was injected with 100μg of the recombinant plasmid,pcDNA_vp7,which contained VP7 gene of the native JL94 isolate of porcine rotavirus,group B with 100μg of eukaryotic expression plasmid pcDNA3.1(+) in 100?μL volume via femoral quadriceps intramuscular route, respectively,and the mice in each group were injected three times totally.After primary injection,all mice received booster injection two times with the same dosage and via the same route of primary injection at interval of two weeks.Blood samples collected from mice at 0d before primary injection and those collected from mice of each group at 14,21,28,35,39,47,54?d,were used for detecting antibody levels and the differences in number of CD4~+、CD8~+ T cells in peripheral blood lymphocytes.The results showed that the antibodies to RV could be detected in the serum of group A mice from the beginning of 14 days of post_immunization (PI).There were significant differences (P<0.05) in number of CD4~+、CD8~+ T cells in peripheral blood lymphocytes between group A and group B from 14 days of PI.更多还原