Cited by 85Metabolism, Diabetes, and CancerCancer, Hypoxia, and MetabolismPI3K/AKT/mTOR signaling in cancer

The DOI matches its Crossref record; 61 of the 61 references it cites were found in a registry or an index.

Inhibition of Lung Tumorigenesis by Metformin Is Associated with Decreased Plasma IGF-I and Diminished Receptor Tyrosine Kinase Signaling

Open access

Published version of a preprint

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.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1158/1940-6207.capr-13-0058-t

Cites

61 of 61 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Metadata

Authors
Quinn, B. J., Dallos, M., Kitagawa, H., Kunnumakkara, A. B., Memmott, R. M., Hollander, M. C., Gills, J. J., & Dennis, P. A.
Affiliations
National Institutes of Health (US)
Corresponding author
Dennis, Phillip A.
Venue
Cancer Prevention Research
Published
2013-08-01
Volume
6
Issue
8
Pages
801-810
ISSN
  • 1940-6207 (ISSN-L)
  • 1940-6215
OpenAlex
W2129620555
Cited by
85
References
61
Citations by year
2025: 7 · 2024: 3 · 2023: 7 · 2022: 5 · 2021: 4 · 2020: 8 · 2019: 5 · 2018: 6 · 2017: 8 · 2016: 9 · 2015: 11 · 2014: 9 · 2013: 3
FWCI
4.77
Type
journal article
Language
en
Open access
Locations
  • Cancer Prevention Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (ZIASC010292)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
metformin, lung carcinogenesis, insulin-like growth factor I, receptor tyrosine kinase signaling, Ras, AMPK-independent mechanism, chemoprevention, type 2 diabetes
MeSH terms
Animals, Carcinogens, Cell Transformation, Neoplastic, Energy Metabolism, Enzyme-Linked Immunosorbent Assay, Female, Hypoglycemic Agents, Insulin-Like Growth Factor I, Lung Neoplasms, Male, Metformin, Mice, Inbred A, Nitrosamines, Phosphorylation, Tissue Distribution, Signal Transduction, Mice, Knockout, Receptor Protein-Tyrosine Kinases, Mice, AMP-Activated Protein Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review