申请人:Public University Corporation
Nagoya City University
公开号:EP2305234A1
公开(公告)日:2011-04-06
First, the present inventors assessed the effect of the compound represented by formula (III) below on Huh-7 cells infected with HBV, and demonstrated that the compound alone had an anti-HBV effect in vitro.
Then, the present inventors revealed that the HBV replication-suppressing effect of PEG-IFN is enhanced in chimeric mice having a human liver infected with genotype C or A HBV when PEG-IFN is used in combination with the compound represented by formula (III) above. The present inventors also revealed that the HBV replication-suppressing effect of Entecavir is enhanced in chimeric mice having a human liver infected with genotype C HBV (wild-type and Entecavir-resistant strains) when Entecavir is used in combination with the compound represented by formula (III) above. In addition, the present inventors revealed that the compound represented by formula (III) above exerts the anti-HBV effect not only against wild-type HBV strains but also against Entecavir- and/or Lamivudine-resistant HBV strains.
首先,本发明人评估了下式(III)所代表的化合物对感染 HBV 的 Huh-7 细胞的影响,结果表明该化合物在体外具有抗 HBV 作用。
然后,本发明人发现,当 PEG-IFN 与上述式(III)所代表的化合物联合使用时,PEG-IFN 在具有感染基因型 C 或 A HBV 的人肝脏的嵌合小鼠中的 HBV 复制抑制效果会增强。本发明人还发现,当恩替卡韦与上述式(III)所代表的化合物联合使用时,恩替卡韦抑制 HBV 复制的效果在具有感染基因型 C HBV(野生型和恩替卡韦抗药株)的人类肝脏的嵌合小鼠中得到增强。此外,本发明人还发现,上述式(III)代表的化合物不仅对野生型 HBV 株具有抗 HBV 作用,而且对恩替卡韦和(或)拉米夫定耐药的 HBV 株也具有抗 HBV 作用。