Evidence map›Paper›PMID 19864471›Full record

ArticleCarcinogenesis2009

Differential effects of reactive nitrogen species on DNA base excision repair initiated by the alkyladenine DNA glycosylase.

Larry E Jones, Lei Ying, Anne B Hofseth, Elena Jelezcova, Robert W Sobol, Stefan Ambs, Curtis C Harris, Michael Graham Espey, Lorne J Hofseth, Michael D Wyatt

Open access · bronzeAbstract read
In one paragraph

Article in Carcinogenesis, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

24 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
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  8. Target search and recognition mechanisms of glycosylase AlkD revealed by scanning FRET-FCS and Markov state models.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  9. Review
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  12. Genotoxicity of amorphous silica nanoparticles: Status and prospects.Nanomedicine : nanotechnology, biology, and medicine · 2019
    Review
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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

10 authors at 7 institutions in 3 countries.

Larry E JonesDepartment of Pharmaceutical and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA.
Lei Ying
Anne B Hofseth
Elena Jelezcova
Robert W Sobol
Stefan Ambs
Curtis C Harris
Michael Graham Espey
Lorne J Hofseth
Michael D Wyatt
University of South Carolina Sumter · USCancer Institute (WIA) · INNational Cancer Research Institute · GBNational Institute of Diabetes and Digestive and Kidney Diseases · USUniversity of Pittsburgh · USUniversity of South Carolina · USUPMC Hillman Cancer Center · US

Funding

TISSUE BIOREPOSITORYP20RR017698 · NCRR · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI PENA, MARIA MARJORETTE · 2002 to 2011
$22.5M
Inflammation and CancerZIABC010033 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI HARRIS, CURTIS · 2009 to 2012
$2.9M
Thymineless stress, DNA repair and recombinationR01CA100450 · NCI · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI WYATT, MICHAEL D. · 2004 to 2008
$1.3M
SUBSTRATE RECOGNITION MECHANISM OF DNA REPAIR ENZYMESK22ES000333 · NIEHS · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI WYATT, MICHAEL D · 1999 to 2001
$209k
Intramural NIH HHSNCI NIH HHS R01 CA100450NCRR NIH HHS P20 RR017698NCRR NIH HHS P20 RR17698
6 · The paper itself

Abstract

Chronic generation of reactive nitrogen species (RNS) can cause DNA damage and may also directly modify DNA repair proteins. RNS-modified DNA is repaired predominantly by the base excision repair (BER) pathway, which includes the alkyladenine DNA glycosylase (AAG). The AAG active site contains several tyrosines and cysteines that are potential sites for modification by RNS. In vitro, we demonstrate that RNS differentially alter AAG activity depending on the site and type of modification. Nitration of tyrosine 162 impaired 1,N(6)-ethenoadenine (epsilonA)-excision activity, whereas nitrosation of cysteine 167 increased epsilonA excision. To understand the effects of RNS on BER in vivo, we examined intestinal adenomas for levels of inducible nitric oxide synthase (iNOS) and AAG. A striking correlation between AAG and iNOS expression was observed (r = 0.76, P = 0.00002). Interestingly, there was no correlation between changes in AAG levels and enzymatic activity. We found AAG to be nitrated in human adenomas, suggesting that this RNS modification is relevant in the human disease. Expression of key downstream components of BER, apurinic/apyrimidinic endonuclease 1 (APE1) and DNA polymerase beta (POLbeta), was also examined. POLbeta protein was increased in nearly all adenomas compared with adjacent non-tumor tissues, whereas APE1 expression was only increased in approximately half of the adenomas and also was relocalized to the cytoplasm in adenomas. Collectively, the results suggest that BER is dysregulated in colon adenomas. RNS-induced posttranslational modification of AAG is one mechanism of BER dysregulation, and the type of modification may define the role of AAG during carcinogenesis.

Indexed as

DNA RepairReactive Nitrogen SpeciesAdenomaAnimalsCatalytic DomainCell Line, TumorDNA-(Apurinic or Apyrimidinic Site) LyaseDNA GlycosylasesDNA Polymerase betaHumansIntestinal NeoplasmsMaleMiceMice, TransgenicProtein ConformationProtein Processing, Post-Translational3-methyladenine-DNA glycosylaseAPEX1 protein, humanDNA-(Apurinic or Apyrimidinic Site) LyaseDNA GlycosylasesDNA Polymerase betaReactive Nitrogen Species

Identifiers

PMID19864471
PMCPMC2792317
OpenAlexW2134776368

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.