Evidence map›Paper›PMID 20022949›Full record

ArticleThe Journal of biological chemistry2010

Stimulation of inducible nitric oxide by hepatitis B virus transactivator protein HBx requires MTA1 coregulator.

Tri M Bui-Nguyen, Suresh B Pakala, Divijendranatha Reddy Sirigiri, Emil Martin, Ferid Murad, Rakesh Kumar

RetractedOpen access · hybridAbstract readRetracted Publication
In one paragraph

Article in The Journal of biological chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Nitric oxide in liver diseases.Trends in pharmacological sciences · 2015
    Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. miRNAs and estrogen action.Trends in endocrinology and metabolism: TEM · 2012
    Review
  14. Article
  15. Review
  16. Article
  17. Hepatitis B virus X gene and hepatocarcinogenesis.Journal of gastroenterology · 2011
    Review
  18. Article
  19. Article
  20. Nitric oxide: perspectives and emerging studies of a well known cytotoxin.International journal of molecular sciences · 2010
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Tri M Bui-NguyenDepartment of Biochemistry and Molecular Biology, George Washington University Medical Center, Washington, DC 20037, USA.
Suresh B Pakala
Divijendranatha Reddy Sirigiri
Emil Martin
Ferid Murad
Rakesh Kumar
The University of Texas Health Science Center at Houston · USWashington University Medical Center · US

Funding

Role of Metastatic Tumor Antigen-1 in Mammary GlandR01CA098823 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI KUMAR, RAKESH · 2003 to 2013
$3.1M
Soluble guanylyl cyclase modulation by endogenous elements and exogenous factorsR01HL088128 · NHLBI · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI MARTIN, EMIL · 2008 to 2012
$2.1M
NCI NIH HHS CA98823NCI NIH HHS R01 CA098823NHLBI NIH HHS R01 HL088128NHLBI NIH HHS R01HL088128
6 · The paper itself

Abstract

Nitric oxide has been implicated in the pathogenesis of inflammatory disorders, including hepatitis B virus-associated hepatocellular carcinoma. Transactivator protein HBx, a major regulator of cellular responses of hepatitis B virus, is known to induce the expression of MTA1 (metastasis-associated protein 1) coregulator via NF-kappaB signaling in hepatic cells. However, the underlying mechanism of HBx regulation of the inducible nitric-oxide synthase (iNOS) pathway remains unknown. Here we provide evidence that MTA1 is a positive regulator of iNOS transcription and plays a mechanistic role in HBx stimulation of iNOS expression and activity. We found that the HBx-MTA1 complex is recruited onto the human iNOS promoter in an NF-kappaB-dependent manner. Pharmacological inhibition of the NF-kappaB signaling prevented the ability of HBx to stimulate the transcription, the expression, and the activity of iNOS; nevertheless, these effects could be substantially rescued by MTA1 dysregulation. We further discovered that HBx-mediated stimulation of MTA1 is paralleled by the suppression of miR-661, a member of the small noncoding RNAs, recently shown to target MTA1. We observed that miR-661 controls of MTA1 expression contributed to the expression and activity of iNOS in HBx-expressing HepG2 cells. Accordingly, depletion of MTA1 by either miR-661 or siRNA in HBx-expressing cells severely impaired the ability of HBx to modulate the endogenous levels of iNOS and nitrite production. Together, these findings reveal an inherent role of MTA1 in HBx regulation of iNOS expression and consequently its function in the liver cancer cells.

Indexed as

Transcription, GeneticAnimalsAnti-Inflammatory Agents, Non-SteroidalCell Line, TumorEnzyme ActivationGene Expression Regulation, EnzymologicHumansLiver NeoplasmsMiceMice, KnockoutMicroRNAsNitric Oxide Synthase Type IIPromoter Regions, GeneticRNA, Small InterferingSesquiterpenesTrans-ActivatorsAnti-Inflammatory Agents, Non-Steroidalhepatitis B virus X proteinMICoA protein, mouseMicroRNAsNitric Oxide Synthase Type IIparthenolideRNA, Small InterferingSesquiterpenesTrans-ActivatorsTranscription FactorsViral Regulatory and Accessory Proteins

Identifiers

PMID20022949
PMCPMC2844147
OpenAlexW2040996073

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.