| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
We studied hepatitis B virus (HBV) replication and mutagenesis using in vitro and in vivo HBV-expressing systems. The findings showed that 1) HBV preS/S protein may not affect HBV replication in a single HBV-infected cell, that 2) interferon-γ may not play a role on the initial eradication of HBV, that 3) the novel type of HBV mutation associated with fulminant hepatic failure was identified, that 4) HBV mutations occurring from immunotolerant phase to immunoactive phase may reduce HBV replication, that 5) precore and preS2 mutations may support replication of lamivudine-resistant HBV, that 6) V1753 and C2189 mutations may result in the improved antiviral efficacy against adefovir, and that 7) the novel HBV mutation that confer resistance to multiple nucleos(t)ide analogs was identified.
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