What is the clinical evidence from this study?

Study design: Other. Population: Hepatitis C virus. Intervention: Structural and mutational analysis of subdomain IIId. Primary outcome: Structural features and functional importance of subdomain IIId.

What question did this study set out to answer?

To determine the three-dimensional solution structure of subdomain IIId within the hepatitis C virus internal ribosome entry site and examine its role in viral protein synthesis.

October 1, 2000RNAOpen Access

A potential RNA drug target in the hepatitis C virus internal ribosomal entry site

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Key result

Structural and mutational analysis of the HCV IRES subdomain IIId revealed noncanonical motifs essential for cap-independent translation, providing a potential RNA drug target.

Population

27-nt fragment identical in sequence to subdomain IIId from the hepatitis C virus internal ribosome entry…

Design

Preclinical

Authors

RKRoscoe KlinckCentre National de la Recherche Scientifique ÉWÉric WesthofRutgers, The State University of New Jersey SWStephen J. WalkerForest Institute

Discussion

Member takes

Implication

May guide RNA-targeted HCV antivirals; hypothesis-generating from animal data and requires clinical validation.

Key Points

To determine the three-dimensional solution structure of subdomain IIId within the hepatitis C virus internal ribosome entry site and examine its role in viral protein synthesis.
Interactively combined nuclear magnetic resonance (NMR) spectroscopy and molecular modeling to determine the three-dimensional structure of a 27-nucleotide RNA fragment identical to subdomain IIId.
Performed in vivo mutational analysis across the full hepatitis C virus internal ribosome entry site (IRES) to assess the functional impact of identified structural motifs.
Identified noncanonical motifs and non-Watson-Crick base pairings within subdomain IIId, including an internal loop motif homologous to the ribosomal alpha-sarcin/ricin loop and a terminal loop closed by a trans-wobble U·G base pair.
Demonstrated through mutational analysis that disrupting each identified structural motif in subdomain IIId impairs overall IRES-mediated translational activity.

Structured PICO

Population

27-nt fragment identical in sequence to subdomain IIId from the hepatitis C virus (HCV) internal ribosome entry site (IRES), and in vivo model for mutational analysis

Intervention

NMR, molecular modeling, and in vivo mutational analysis

Outcome

Three-dimensional structure of IIId and validation of structural motifs for IRES function

Structural characterization of the HCV IRES IIId subdomain reveals essential motifs for viral translation, providing potential targets for RNA-directed antiviral drugs.

Cite This Study

Klinck et al. (2000) studied Hepatitis C virus. Structural and mutational analysis of subdomain IIId was evaluated on Structural features and functional importance of subdomain IIId. Structural and mutational analysis of the HCV IRES subdomain IIId revealed noncanonical motifs essential for cap-independent translation, providing a potential RNA drug target.

synapsesocial.com/papers/6a972ed0bcdee4d4a085fa89 https://doi.org/10.1017/s1355838200000935

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A potential RNA drug target in the hepatitis C virus internal ribosomal entry site

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

A potential RNA drug target in the hepatitis C virus internal ribosomal entry site

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Also Consider