Evidence map›Paper›PMID 23771523›Full record

ArticleCancer prevention research (Philadelphia, Pa.)2013

Inhibition of lung tumorigenesis by metformin is associated with decreased plasma IGF-I and diminished receptor tyrosine kinase signaling.

Brendan J Quinn, Matthew Dallos, Hiroshi Kitagawa, Ajaikumar B Kunnumakkara, Regan M Memmott, M Christine Hollander, Joell J Gills, Phillip A Dennis

Open access · bronzeAbstract read
In one paragraph

Article in Cancer prevention research (Philadelphia, Pa.), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 2 pooled it
4.8field-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

55 citing papers in PubMed, 2 syntheses or guidelines pooled it, 84 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Bioactivity and prostate tissue distribution of metformin in a preprostatectomy prostate cancer cohort.European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) · 2018
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  16. Unraveling the Potential Role of NEDD4-like E3 Ligases in Cancer.International journal of molecular sciences · 2022
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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

8 authors at 2 institutions in 1 country.

Brendan J QuinnDepartment of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.
Matthew Dallos
Hiroshi Kitagawa
Ajaikumar B Kunnumakkara
Regan M Memmott
M Christine Hollander
Joell J Gills
Phillip A Dennis
Johns Hopkins University · USNational Cancer Institute · US

Funding

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
Intramural NIH HHS ZIA SC010292
6 · The paper itself

Abstract

Metformin is the most commonly prescribed drug for type II diabetes and is associated with decreased cancer risk. Previously, we showed that metformin prevented tobacco carcinogen (NNK)-induced lung tumorigenesis in a non-diabetic mouse model, which was associated with decreased IGF-I/insulin receptor signaling but not activation of AMPK in lung tissues, as well as decreased circulating levels of IGF-I and insulin. Here, we used liver IGF-I-deficient (LID) mice to determine the importance of IGF-I in NNK-induced lung tumorigenesis and chemoprevention by metformin. LID mice had decreased lung tumor multiplicity and burden compared with wild-type (WT) mice. Metformin further decreased lung tumorigenesis in LID mice without affecting IGF-I levels, suggesting that metformin can act through IGF-I-independent mechanisms. In lung tissues, metformin decreased phosphorylation of multiple receptor tyrosine kinases (RTK) as well as levels of GTP-bound Ras independently of AMPK. Metformin also diminished plasma levels of several cognate ligands for these RTKs. Tissue distribution studies using [(14)C]-metformin showed that uptake of metformin was high in liver but four-fold lower in lungs, suggesting that the suppression of RTK activation by metformin occurs predominantly via systemic, indirect effects. Systemic inhibition of circulating growth factors and local RTK signaling are new AMPK-independent mechanisms of action of metformin that could underlie its ability to prevent tobacco carcinogen-induced lung tumorigenesis.

Indexed as

AMP-Activated Protein KinasesAnimalsCarcinogensCell Transformation, NeoplasticEnergy MetabolismEnzyme-Linked Immunosorbent AssayFemaleHypoglycemic AgentsInsulin-Like Growth Factor ILung NeoplasmsMaleMetforminMiceMice, Inbred AMice, KnockoutNitrosamines4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanoneAMP-Activated Protein KinasesCarcinogensHypoglycemic AgentsInsulin-Like Growth Factor IMetforminNitrosaminesPrkaa1 protein, mouseReceptor Protein-Tyrosine Kinases

Identifiers

PMID23771523
PMCPMC3740378
OpenAlexW2129620555

What OpenQuestion holds

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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.