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Hepatitis Delta Virus RNA Replication

open access: yesViruses, 2009
Hepatitis delta virus (HDV) is a distant relative of plant viroids in the animal world. Similar to plant viroids, HDV replicates its circular RNA genome using a double rolling-circle mechanism.
Chung-Hsin Tseng, Michael M. C. Lai
doaj   +2 more sources

Immunological response of Hepatitis B Virus Surface Antigen in HBV Mono and HBV/HDV Co-infection [PDF]

open access: yesPakistan Journal of Medicine and Dentistry, 2021
Hepatitis B virus (HBV) can evolve under selection pressure exerted by drugs and host immunity, resulting in the accumulation of escape mutations that can affect the drug or the immune activity.
Mehwish Sajjad   +3 more
doaj   +2 more sources

Chronic Hepatitis B in the United States: Current Landscape, Unmet Needs and Future Directions. [PDF]

open access: yesJ Viral Hepat
ABSTRACT Chronic hepatitis B (CHB) infection represents a major public health challenge in the US, with substantial unmet needs related to timely diagnosis, treatment, monitoring and disease management. This narrative review explores the CHB landscape in the US, including gaps in patient care, the evolving therapeutic landscape, the clinical utility of
Cohen C, Esteban JP, Bobde S, Wong RJ.
europepmc   +2 more sources

A novel form of hepatitis delta antigen [PDF]

open access: yesJournal of Virology, 1996
Hepatitis delta virus (HDV) is known to express a protein termed the small delta antigen, a structural protein which is also essential for genome replication. During replication, posttranscriptional RNA editing specifically modifies some of the HDV RNA, leading to the production of an elongated form of the delta antigen, the large form, which is ...
V V, Bichko, Y E, Khudyakov, J M, Taylor
openaire   +2 more sources

Phosphorylation of the hepatitis delta virus antigens [PDF]

open access: yesJournal of Virology, 1997
We used two-dimensional electrophoresis (nonequilibrium pH gradient electrophoresis followed by sodium dodecyl sulfate-10% polyacrylamide gel electrophoresis) coupled with 32P labeling and immunoblotting detection with 125I-protein A to detect and quantitate phosphorylation of the large and small forms of the delta antigen (deltaAg-L and deltaAg-S ...
V, Bichko, S, Barik, J, Taylor
openaire   +2 more sources

Hepatitis Delta Antigen Mediates the Nuclear Import of Hepatitis Delta Virus RNA [PDF]

open access: yesJournal of Virology, 1998
ABSTRACT Hepatitis delta virus (HDV) RNA replicates in the nuclei of virus-infected cells. The mechanism of nuclear import of HDV RNA is so far unknown. Using a fluorescein-labeled HDV RNA introduced into partially permeabilized HeLa cells, we found that HDV RNA accumulated only in the cytoplasm.
H C, Chou   +3 more
openaire   +2 more sources

Characterization of hepatitis delta antigen: specific binding to hepatitis delta virus RNA [PDF]

open access: yesJournal of Virology, 1990
It has previously been shown that human hepatitis virus delta antigen has an RNA-binding activity (Chang et al., J. Virol. 62:2403-2410, 1988). In the present study, the specificity of such an RNA-protein interaction was demonstrated by expressing various domains of the delta antigen in Escherichia coli as TrpE fusion proteins and testing their RNA ...
J H, Lin   +4 more
openaire   +2 more sources

Hepatitis delta antigens enhance the ribozyme activities of hepatitis delta virus RNA in vivo [PDF]

open access: yesJournal of Virology, 1996
The mechanism of regulation for the ribozyme activity of hepatitis delta virus (HDV) RNA in infected cells is unknown. Previously, we developed a direct assay capable of detecting the ribozyme activity of HDV dimer or trimer RNAs in vivo (K.-S. Jeng, A. Daniel, and M. M. C. Lai, J. Virol, 70:2403-2410, 1996).
K S, Jeng, P Y, Su, M M, Lai
openaire   +2 more sources

Genotype-Specific Complementation of Hepatitis Delta Virus RNA Replication by Hepatitis Delta Antigen [PDF]

open access: yesJournal of Virology, 1998
ABSTRACT Characterizations of genetic variations among hepatitis delta virus (HDV) isolates have focused principally on phylogenetic analysis of sequences, which vary by 30 to 40% among three genotypes and about 10 to 15% among isolates of the same genotype.
J L, Casey, J L, Gerin
openaire   +2 more sources

HLA-A*11:01 Identifies Patients at Risk for Persistent Viraemia and Advanced Fibrosis in HDV Infection. [PDF]

open access: yesAliment Pharmacol Ther
The HLA‐A*11:01 allele is associated with persistent viraemia and advanced liver fibrosis in HDV infection. HLA‐A*11:01 carriers exhibit a reduced T‐cell repertoire, suggesting a narrower T‐cell response to the infection. ABSTRACT Background Hepatitis delta virus (HDV) infection causes the most severe form of viral hepatitis, with highly heterogeneous ...
Cortese MF   +11 more
europepmc   +2 more sources

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