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Metformin suppresses intestinal polyp growth in Apc Min/+ mice
Open accessAbstract
Metformin is a biguanide derivative that is widely used in the treatment of diabetes mellitus. One of the pharmacological targets of metformin is adenosine monophosphate-activated protein kinase (AMPK). We investigated the effect of metformin on the suppression of intestinal polyp formation in Apc(Min/+) mice. Administration of metformin (250 mg/kg) did not reduce the total number of intestinal polyp formations, but significantly reduced the number of intestinal polyp formations larger than 2 mm in diameter in Apc(Min/+) mice. To examine the indirect effect of metformin, the index of insulin resistance and serum lipid levels in Apc(Min/+) mice were assessed. These factors were not significantly attenuated by the treatment with metformin, indicating that the suppression of polyp growth is not due to the indirect drug action. The levels of tumor cell proliferation as determined by 5-bromodeoxyuridine and proliferating cell nuclear antigen immunohistochemical staining, and apoptosis, via transferase deoxytidyl uridine end labeling staining, in the polyps of metformin-treated mice were not significantly different in comparison to those of control mice. Gene expression of cyclin D1 and c-myc in intestinal polyps were also not significantly different between those two groups. In contrast, metformin activated AMPK in the intestinal polyps, resulting in the inhibition of the activation of mammalian target of rapamycin, which play important roles in the protein synthesis machinery. Metformin suppressed the polyp growth in Apc(Min/+) mice, suggesting that it may be a novel candidate as a chemopreventive agent for colorectal cancer.
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“This epidemiologic evidence has coalesced with experimental work in animals(256–263).”
From Metformin, the Aspirin of the 21st Century: Its Role in Gestational Diabetes Mellitus, Prevention of Preeclampsia and Cancer, and the Promotion of Longevity (2017) · cites this paper as [263]
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Metadata
- Authors
- Tomimoto, A., Endo, H., Sugiyama, M., Fujisawa, T., Hosono, K., Takahashi, H., Nakajima, N., Nagashima, Y., Wada, K., Nakagama, H., & Nakajima, A.
- Affiliations
- National Institute of Infectious Diseases (JP)
- Yokohama City University (JP)
- The University of Osaka (JP)
- National Cancer Center Research Institute (JP)
- Corresponding author
- Nakajima, Atsushi
- ORCID
- Venue
- Cancer Science
- Publisher
- Wiley
- Published
- 2008-11
- Volume
- 99
- Issue
- 11
- Pages
- 2136-2141
- ISSN
- 1347-9032 (ISSN-L)
- 1349-7006
- PMC
- PMC11159964
- OpenAlex
- W2140983197
- Cited by
- 185
- References
- 24
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 9 · 2023: 5 · 2022: 9 · 2021: 7 · 2020: 8 · 2019: 9 · 2018: 10 · 2017: 9 · 2016: 6 · 2015: 15 · 2014: 20 · 2013: 16 · 2012: 22
- FWCI
- 4.67
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Cancer Science (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of Biomedical Innovation
- Princess Takamatsu Cancer Research Fund
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
- Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
- Keywords
- metformin, intestinal polyps, ApcMin/+ mice, AMPK, mTOR, colorectal cancer chemoprevention, insulin resistance, serum lipids, tumor cell proliferation, apoptosis, cyclin D1, c-Myc
- MeSH terms
- Animals, Immunohistochemistry, Intestinal Polyps, Metformin, Mice, Inbred C57BL, Mice, Transgenic, Gene Expression Regulation, Neoplastic, Proto-Oncogene Proteins c-myc, Anticarcinogenic Agents, Genes, APC, Cyclin D1, Cell Proliferation, Mice
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