Evidence map›Paper›PMID 21625009›Full record

ArticleCarcinogenesis2011

A Cyp2a polymorphism predicts susceptibility to NNK-induced lung tumorigenesis in mice.

M Christine Hollander, Xin Zhou, Colleen R Maier, Andrew D Patterson, Xinxin Ding, Phillip A Dennis

Open access · bronzeAbstract read
In one paragraph

Article in Carcinogenesis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

12 citing papers in PubMed, 18 citations in OpenAlex.

  1. Review
  2. The Multifarious Link between Cytochrome P450s and Cancer.Oxidative medicine and cellular longevity · 2020
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Lung carcinogenesis by tobacco smoke.International journal of cancer · 2012
    Review
  12. Article
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 4 institutions in 1 country.

M Christine HollanderMedical Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.
Xin Zhou
Colleen R Maier
Andrew D Patterson
Xinxin Ding
Phillip A Dennis
National Institutes of Health · USNational Cancer Institute · USNew York State Department of Health · USWadsworth Center · US

Funding

Human CYP2A and respiratory tract xenobiotic toxicityR01CA092596 · NCI · WADSWORTH CENTER · PI DING, XINXIN · 2003 to 2020
$6.1M
Signal Transduction Pathways that Promote Survival of Lung Cancer CellsZIASC010292 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI DENNIS, PHILLIP A. · 2009 to 2012
$4.0M
Clinical Investigation of Signal Transduction InhibitorsZIABC010748 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI DENNIS, PHILLIP A. · 2009 to 2012
$2.0M
Intramural NIH HHSNCI NIH HHS CA092596
6 · The paper itself

Abstract

Lung tumors from smokers as well as lung tumors from mice exposed to tobacco carcinogens such as 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), often carry mutations in K-ras, which activates downstream-signaling pathways such as PI3K/AKT/mTOR pathway. Mice with genetic deletion of one of three isoforms of AKT were used to investigate the role of AKT in mutant K-ras-induced lung tumorigenesis in mice. Although deletion of Akt1 or Akt2 decreased NNK-induced lung tumor formation by 90%, deletion of Akt2 failed to decrease lung tumorigenesis in two other mouse models driven by mutant K-ras. Genetic mapping showed that Akt2 was tightly linked to the cytochrome P450 Cyp2a locus on chromosome 7. Consequently, targeted deletion of Akt2 created linkage to a strain-specific Cyp2a5 polymorphism that decreased activation of NNK in vitro. Mice with this Cyp2a5 polymorphism had decreased NNK-induced DNA adduct formation in vivo and decreased NNK-induced lung tumorigenesis. These studies support human epidemiological studies linking CYP2A polymorphisms with lung cancer risk in humans and highlight the need to confirm phenotypes of genetically engineered mice in multiple mouse strains.

Indexed as

AnimalsAryl Hydrocarbon HydroxylasesCarcinogensFemaleImmunoblottingLungLung NeoplasmsMaleMiceMice, Inbred AMice, Inbred C57BLMice, KnockoutMicrosomes, LiverNitrosaminesPolymerase Chain ReactionPolymorphism, Genetic4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanoneAkt2 protein, mouseAryl Hydrocarbon HydroxylasesCarcinogensNitrosaminesProto-Oncogene Proteins c-aktsteroid hormone 7-alpha-hydroxylaseSteroid Hydroxylases

Identifiers

PMID21625009
PMCPMC3149208
OpenAlexW2157980875

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.