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  1. NTU Scholars
  2. 醫學院
  3. 臨床醫學研究所
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/568713
Title: RNA interference-mediated control of hepatitis B virus and emergence of resistant mutant
Authors: Wu H.-L.
Huang L.-R.
Huang C.-C.
Lai H.-L.
CHUN-JEN LIU 
Huang Y.-T.
Hsu Y.-W.
Lu C.-Y.
DING-SHINN CHEN 
PEI-JER CHEN 
Issue Date: 2005
Publisher: W.B. Saunders
Journal Volume: 128
Journal Issue: 3
Start page/Pages: 708-716
Source: Gastroenterology
Abstract: 
Background & Aims: Present therapy for chronic hepatitis B attains control only in limited proportions. Small interfering RNA (siRNA) offers a new tool with potential therapeutic applications for hepatitis B virus (HBV). Given the importance of sequence identity in the effectiveness of siRNA and the heterogeneity of HBV sequences among different isolates, a short hairpin RNA (shRNA)-expressing plasmid, pSuper/HBVS1, was developed to target a region conserved among major HBV genotypes and assess its effectiveness control of HBV. Methods: HBV replication-competent plasmid was cotransfected with pSuper/HBVS1 to HuH-7 cells or to mice. The levels of viral proteins, RNA, and DNA were examined in transfected cells and animals. The effects of pSuper/HBVS1 on clinical isolates with genotypes B and C were also determined. Results: pSuper/HBVS1 significantly decreased levels of viral proteins, RNA, and DNA for HBV genotype A in cell culture and in mice. Comparable suppressive effects were observed on clinical isolates of genotypes B and C. A clone with a silent mutation in the target region was identified from a patient with genotype C. This mutant revealed diminished sensitivity to pSuper/HBVS1 and could be selected out in the presence of pSuper/HBVS1 in cell culture. Conclusions: These findings indicated that shRNA could suppress HBV expression and replication for genotypes A, B, and C, promising an advance in treatment of HBV. However, the emergence of resistant mutants in HBV quasispecies should be considered. ? 2005 by the American Gastroenterological Association.
URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-15744372307&doi=10.1053%2fj.gastro.2004.12.007&partnerID=40&md5=bde8ce8ac65800b261c4d1ebe8e46cd0
https://scholars.lib.ntu.edu.tw/handle/123456789/568713
ISSN: 0016-5085
DOI: 10.1053/j.gastro.2004.12.007
SDG/Keyword: plasmid DNA; short hairpin RNA; small interfering RNA; virus DNA; virus protein; virus RNA; small interfering RNA; amino acid sequence; animal experiment; animal model; antiviral activity; article; controlled study; drug effect; drug targeting; gene expression; gene targeting; genetic transfection; genotype; Hepatitis B virus; human; human cell; immunohistochemistry; molecular cloning; mouse; nonhuman; plasmid; priority journal; RNA interference; virus expression; virus mutant; virus replication; virus resistance; animal; antibiotic resistance; C57BL mouse; cell line; genetics; mutation; nucleotide sequence; physiology; Animals; Base Sequence; Cell Line; Drug Resistance, Viral; Gene Expression; Genotype; Hepatitis B virus; Humans; Mice; Mice, Inbred C57BL; Mutation; RNA Interference; RNA, Small Interfering; Transfection; Virus Replication
[SDGs]SDG3
Appears in Collections:臨床醫學研究所

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