Evidence map›Paper›PMID 15280491›Full record

ArticleJournal of virology2004

Hepatitis C virus infection activates the immunologic (type II) isoform of nitric oxide synthase and thereby enhances DNA damage and mutations of cellular genes.

Keigo Machida, Kevin T-H Cheng, Vicky M-H Sung, Ki Jeong Lee, Alexandra M Levine, Michael M C Lai

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

82 citing papers in PubMed, 1 synthesis or guideline pooled it, 189 citations in OpenAlex.

  1. Hepatitis C and non-Hodgkin lymphoma among 4784 cases and 6269 controls from the International Lymphoma Epidemiology Consortium.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2008
    Pooled it
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. SARS-CoV-2 and the DNA damage response.The Journal of general virology · 2023
    Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Oxidative Stress-Related Mechanisms in SARS-CoV-2 Infections.Oxidative medicine and cellular longevity · 2022
    Review
  16. HCV and tumor-initiating stem-like cells.Frontiers in physiology · 2022
    Review
  17. Nitric Oxide to Fight Viral Infections.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021
    Review
  18. Article
  19. Observational
  20. NADSignal transduction and targeted therapy · 2020
    Review

22 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Keigo MachidaDepartment of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, 2011 Zonal Ave., Los Angeles, CA 90033, USA.
Kevin T-H Cheng
Vicky M-H Sung
Ki Jeong Lee
Alexandra M Levine
Michael M C Lai
University of Southern California · US

Funding

TRANSGENIC MICE AS A MODEL TO STUDY HEPATITIS C VIRUS IMMUNOPATHOGENESISU19AI040038 · NIAID · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LAI, MICHAEL M.C. · 1996 to 2004
$3.8M
CELL CULTURE-BASED STUDIES OF HCV PATHOGENESISR01CA108302 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LAI, MICHAEL M.C. · 2003 to 2007
$1.6M
NCI NIH HHS CA 108302NCI NIH HHS R01 CA108302NIAID NIH HHS AI 40038NIAID NIH HHS N01 AI040038
6 · The paper itself

Abstract

Hepatitis C virus (HCV) infection causes hepatitis, hepatocellular carcinoma, and B-cell lymphomas in a significant number of patients. Previously we have shown that HCV infection causes double-stranded DNA breaks and enhances the mutation frequency of cellular genes, including proto-oncogenes and immunoglobulin genes. To determine the mechanisms, we studied in vitro HCV infection of cell culture. Here we report that HCV infection activated the immunologic (type II) isoform of nitric oxide (NO) synthase (NOS), i.e., inducible NOS (iNOS), thereby inducing NO, which in turn induced DNA breaks and enhanced the mutation frequencies of cellular genes. Treatment of HCV-infected cells with NOS inhibitors or small interfering RNA specific for iNOS abolished most of these effects. Expression of the core protein or nonstructural protein 3 (NS3), but not the other viral proteins, in B cells or hepatocytes induced iNOS and DNA breaks, which could be blocked by NOS inhibitors. The core protein also enhanced the mutation frequency of cellular genes in hepatocytes derived from HCV core transgenic mice compared with that in control mice. The iNOS promoter was activated more than fivefold in HCV-infected cells, as revealed by a luciferase reporter assay driven by the iNOS promoter. Similarly, the core and NS3 proteins also induced the same effects. Therefore, we conclude that HCV infection can stimulate the production of NO through activation of the gene for iNOS by the viral core and NS3 proteins. NO causes DNA breaks and enhances DNA mutation. This sequence of events provides a mechanism for HCV pathogenesis and oncogenesis.

Indexed as

DNA DamageMutationAnimalsB-LymphocytesCell LineDEAD-box RNA HelicasesHepacivirusHepatocytesHumansMiceMice, TransgenicMolecular Sequence DataNitric OxideNitric Oxide SynthaseNitric Oxide Synthase Type IINucleoside-TriphosphataseDEAD-box RNA HelicasesNitric OxideNitric Oxide SynthaseNitric Oxide Synthase Type IINOS2 protein, humanNos2 protein, mouseNS3 protein, hepatitis C virusnucleocapsid protein, Hepatitis C virusNucleoside-TriphosphataseSerine EndopeptidasesTumor Suppressor Protein p53Viral Core ProteinsViral Nonstructural ProteinsViral Proteases

Identifiers

PMID15280491
PMCPMC479064
OpenAlexW2171371889

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.