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- W2884587185 abstract "AIM: To optimize the viral persistence rate in a hydrodynamic injection(HI) based hepatitis B virus(HBV) transfection mouse model.METHODS:(1) 5-6-wk-old male C3H/He N and C57BL/6 mice were hydrodynamically injected with 10 μg endotoxin-free p AAV/HBV1.2 plasmid DNA via the tail vein. Hepatitis B surface antigen(HBs Ag), hepatitis B e antigen(HBe Ag) and HBV DNA, both in the serum and liver, were detected at different time points post HI by ELISA, immunohistochemical staining or quantitative polymerase chain reaction(PCR);(2) male C3H/He N and C57BL/6 mice, either hydrodynamically injected mice at 10 wk post HI or na?ve mice, were all immunized subcutaneously with 5 μg HBs Ag formulated in complete Freund’s adjuvant three times at a 2-wk interval. Two weeks after the final immunization, splenocytes were isolated for T cell function analysis by ELISPOT assay; and(3) five weeks post HI, C3H/He N mice were intragastrically administered 0.1 mg/kg entecavir once a day for 14 d, or were intraperitoneally injected with 1 mg/kg interferon(IFN)-α twice a week for 2 wk, or were treated with PBS as controls. The sera were collected and assayed for HBV DNA on days 0, 7 and 14 after drug treatment. RESULTS:(1) Approximately 90%(22/25) of the injected C3H/He N mice were still HBs Ag-positive at 46 wk post HI, whereas HBs Ag in C57BL/6 mice were completely cleared at 24 wk. Serum levels of HBe Ag in C3H/He N mice were higher than those in C57BL/6 mice from 4 wk to 46 wk. HBV DNA levels in the hydrodynamically injected C3H/He N mice were higher than those in the C57BL/6 mice, both in the serum(from 4 wk to 46 wk) and in the liver(detected at 8 wk and 46 wk post HI). Histology showed that hepatitis B core antigen and HBs Ag were expressed longer in the liver of C3H/He N mice than in C57BL/6;(2) HBs Ag specific T cell responses after HBs Ag vaccination in hydrodynamically injected C3H/He N and C57BL/6 mice, or naive control mice were detected by ELISPOT assay. After stimulation with HBs Ag, the frequencies of IFN-γ producing" @default.
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- W2884587185 date "2015-01-01" @default.
- W2884587185 modified "2023-09-24" @default.
- W2884587185 title "High persistence rate of hepatitis B virus in a hydrodynamic injection-based transfection model in C3H/He N mice" @default.
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