John L. Casey

The fraction of RNA that folds into the correct branched secondary structure determines hepatitis delta virus type 3 RNA editing levels (2009)

Linnstaedt, Sarah D., Kasprzak, Wojciech K., Shapiro, Bruce A., Casey, John L.

RNA editing by the host RNA adenosine deaminase ADAR1 at the amber/W site of hepatitis delta virus RNA plays a central role in the viral replication cycle by affecting the balance between viral RNA...

The role of a metastable RNA secondary structure in hepatitis delta virus genotype III RNA editing (2006)

Linnstaedt, Sarah D., Kasprzak, Wojciech K., Shapiro, Bruce A., Casey, John L.

RNA editing plays a critical role in the life cycle of hepatitis delta virus (HDV). The host editing enzyme ADAR1 recognizes specific RNA secondary structure features around the amber/W site in the...

The role of a metastable RNA secondary structure in hepatitis delta virus genotype III RNA editing (2006)

Linnstaedt, Sarah D., Kasprzak, Wojciech K., Shapiro, Bruce A., Casey, John L.

RNA editing plays a critical role in the life cycle of hepatitis delta virus (HDV). The host editing enzyme ADAR1 recognizes specific RNA secondary structure features around the amber/W site in the...

The role of a metastable RNA secondary structure in hepatitis delta virus genotype III RNA editing (2006)

Linnstaedt, Sarah D., Kasprzak, Wojciech K., Shapiro, Bruce A., Casey, John L.

RNA editing plays a critical role in the life cycle of hepatitis delta virus (HDV). The host editing enzyme ADAR1 recognizes specific RNA secondary structure features around the amber/W site in the...

Deletional analysis of the promoter region of the human transferrin receptor gene (1988)

Casey, John L., Jeso, Bruno Di, Rao, Krishnamurthy K., Rouault, Tracey A., Klausner, Richard D., Harford, Joe B.

Fragments of human genomic DNA corresponding to the promoter region of the gene for the transferrin receptor have been cloned upstream or the bacterial gene for chloramphenicol acetyltransferase and...

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

Casey, John L., Gerin, John L.

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...

Hepatitis Delta Virus RNA Editing Is Highly Specific for the Amber/W Site and Is Suppressed by Hepatitis Delta Antigen

Polson, Andrew G., Ley, Herbert L., Bass, Brenda L., Casey, John L.

RNA editing at adenosine 1012 (amber/W site) in the antigenomic RNA of hepatitis delta virus (HDV) allows two essential forms of the viral protein, hepatitis delta antigen (HDAg), to be synthesized...

Increased RNA Editing and Inhibition of Hepatitis Delta Virus Replication by High-Level Expression of ADAR1 and ADAR2

Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) is a subviral human pathogen that uses specific RNA editing activity of the host to produce two essential forms of the sole viral protein, hepatitis delta antigen (HDAg)....

RNA Editing in Hepatitis Delta Virus Genotype III Requires a Branched Double-Hairpin RNA Structure

Casey, John L.

RNA editing at the amber/W site plays a central role in the replication scheme of hepatitis delta virus (HDV), allowing the virus to produce two functionally distinct forms of the sole viral protein,...

A Prenylation Inhibitor Prevents Production of Infectious Hepatitis Delta Virus Particles

Bordier, Bruno B., Marion, Patricia L., Ohashi, Kazuo, Kay, Mark A., Greenberg, Harry B., Casey, John L., ...

Hepatitis delta virus (HDV) causes both acute and chronic liver disease throughout the world. Effective medical therapy is lacking. Previous work has shown that the assembly of HDV virus-like...

Inhibition of Hepatitis Delta Virus RNA Editing by Short Inhibitory RNA-Mediated Knockdown of ADAR1 but Not ADAR2 Expression

Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) requires host RNA editing at the viral RNA amber/W site. Of the two host genes responsible for RNA editing via deamination of adenosines in double-stranded RNAs, short...

Differential Inhibition of RNA Editing in Hepatitis Delta Virus Genotype III by the Short and Long Forms of Hepatitis Delta Antigen

Cheng, Qiufang, Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) produces two essential forms of the sole viral protein from the same open reading frame by using host RNA editing activity at the amber/W site in the antigenomic RNA. The...

In vivo antiviral efficacy of prenylation inhibitors against hepatitis delta virus

Bordier, Bruno B., Ohkanda, Junko, Liu, Ping, Lee, So-Young, Salazar, F.H., Marion, Patricia L., ...

Hepatitis delta virus (HDV) can dramatically worsen liver disease in patients coinfected with hepatitis B virus (HBV). No effective medical therapy exists for HDV. The HDV envelope requires HBV...

Effects of Conserved RNA Secondary Structures on Hepatitis Delta Virus Genotype I RNA Editing, Replication, and Virus Production

Jayan, Geetha C., Casey, John L.

RNA editing of the hepatitis delta virus (HDV) antigenome at the amber/W site by the host RNA adenosine deaminase ADAR1 is a critical step in the HDV replication cycle. Editing is required for...

Genetic Changes in Hepatitis Delta Virus from Acutely and Chronically Infected Woodchucks

Casey, John L., Tennant, Bud C., Gerin, John L.

A woodchuck-derived hepatitis delta virus (HDV) inoculum was created by transfection of a genotype I HDV cDNA clone directly into the liver of a woodchuck that was chronically infected with woodchuck...

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

Casey, John L., Gerin, John L.

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...

Hepatitis Delta Virus RNA Editing Is Highly Specific for the Amber/W Site and Is Suppressed by Hepatitis Delta Antigen

Polson, Andrew G., Ley, Herbert L., Bass, Brenda L., Casey, John L.

RNA editing at adenosine 1012 (amber/W site) in the antigenomic RNA of hepatitis delta virus (HDV) allows two essential forms of the viral protein, hepatitis delta antigen (HDAg), to be synthesized...

Increased RNA Editing and Inhibition of Hepatitis Delta Virus Replication by High-Level Expression of ADAR1 and ADAR2

Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) is a subviral human pathogen that uses specific RNA editing activity of the host to produce two essential forms of the sole viral protein, hepatitis delta antigen (HDAg)....

RNA Editing in Hepatitis Delta Virus Genotype III Requires a Branched Double-Hairpin RNA Structure

Casey, John L.

RNA editing at the amber/W site plays a central role in the replication scheme of hepatitis delta virus (HDV), allowing the virus to produce two functionally distinct forms of the sole viral protein,...

A Prenylation Inhibitor Prevents Production of Infectious Hepatitis Delta Virus Particles

Bordier, Bruno B., Marion, Patricia L., Ohashi, Kazuo, Kay, Mark A., Greenberg, Harry B., Casey, John L., ...

Hepatitis delta virus (HDV) causes both acute and chronic liver disease throughout the world. Effective medical therapy is lacking. Previous work has shown that the assembly of HDV virus-like...

Inhibition of Hepatitis Delta Virus RNA Editing by Short Inhibitory RNA-Mediated Knockdown of ADAR1 but Not ADAR2 Expression

Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) requires host RNA editing at the viral RNA amber/W site. Of the two host genes responsible for RNA editing via deamination of adenosines in double-stranded RNAs, short...

Differential Inhibition of RNA Editing in Hepatitis Delta Virus Genotype III by the Short and Long Forms of Hepatitis Delta Antigen

Cheng, Qiufang, Jayan, Geetha C., Casey, John L.

Hepatitis delta virus (HDV) produces two essential forms of the sole viral protein from the same open reading frame by using host RNA editing activity at the amber/W site in the antigenomic RNA. The...

In vivo antiviral efficacy of prenylation inhibitors against hepatitis delta virus

Bordier, Bruno B., Ohkanda, Junko, Liu, Ping, Lee, So-Young, Salazar, F.H., Marion, Patricia L., ...

Hepatitis delta virus (HDV) can dramatically worsen liver disease in patients coinfected with hepatitis B virus (HBV). No effective medical therapy exists for HDV. The HDV envelope requires HBV...

Effects of Conserved RNA Secondary Structures on Hepatitis Delta Virus Genotype I RNA Editing, Replication, and Virus Production

Jayan, Geetha C., Casey, John L.

RNA editing of the hepatitis delta virus (HDV) antigenome at the amber/W site by the host RNA adenosine deaminase ADAR1 is a critical step in the HDV replication cycle. Editing is required for...

Genetic Changes in Hepatitis Delta Virus from Acutely and Chronically Infected Woodchucks

Casey, John L., Tennant, Bud C., Gerin, John L.

A woodchuck-derived hepatitis delta virus (HDV) inoculum was created by transfection of a genotype I HDV cDNA clone directly into the liver of a woodchuck that was chronically infected with woodchuck...

The role of a metastable RNA secondary structure in hepatitis delta virus genotype III RNA editing

Linnstaedt, Sarah D., Kasprzak, Wojciech K., Shapiro, Bruce A., Casey, John L.

RNA editing plays a critical role in the life cycle of hepatitis delta virus (HDV). The host editing enzyme ADAR1 recognizes specific RNA secondary structure features around the amber/W site in the...

RNA Editing of the Human Herpesvirus 8 Kaposin Transcript Eliminates Its Transforming Activity and Is Induced during Lytic Replication▿

Gandy, Sharon Z., Linnstaedt, Sarah D., Muralidhar, Sumitra, Cashman, Kathleen A., Rosenthal, Leonard J., Casey, John L.

Human herpesvirus 8 is the etiologic agent associated with Kaposi's sarcoma and primary effusion lymphoma (PEL). The K12 RNA, which produces as many as three variants of the kaposin protein, as well...

Hepatitis Delta Antigen Requires a Minimum Length of the Hepatitis Delta Virus Unbranched Rod RNA Structure for Binding▿

Defenbaugh, Dawn A., Johnson, Matthew, Chen, Renxiang, Zheng, Ying Yi, Casey, John L.

Hepatitis delta virus (HDV) is a subviral pathogen that increases the severity of liver disease caused by hepatitis B virus. Both the small circular RNA genome and its complement, the antigenome,...