Evidence map›Paper›PMID 35780231›Full record

ArticleMedical oncology (Northwood, London, England)2022

Metformin inhibits the development and metastasis of colorectal cancer.

Kiyoaki Sugiura, Koji Okabayashi, Ryo Seishima, Takashi Ishida, Kohei Shigeta, Masashi Tsuruta, Hirotoshi Hasegawa, Yuko Kitagawa

Abstract read
PubMed Publisher
In one paragraph

Article in Medical oncology (Northwood, London, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.7field-weighted citation impact, top 15% 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

18 citing papers in PubMed, 22 citations in OpenAlex.

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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 4 institutions in 1 country.

Kiyoaki SugiuraDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan.ORCID http://orcid.org/0000-0002-1830-3849
Koji OkabayashiDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan. okabayashikoji@gmail.com.ORCID http://orcid.org/0000-0001-8554-1137
Ryo SeishimaDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan.
Takashi IshidaDepartment of Hepato-Biliary-Pancreatic & Gastrointestinal Surgery, and Welfare, School of Medicine, International University of Health, Chiba, Japan.
Kohei ShigetaDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan.
Masashi TsurutaDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan.
Hirotoshi HasegawaDepartment of Surgery, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan.
Yuko KitagawaDepartment of Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku-Ku, Tokyo, 160-8582, Japan.
Keio University Hospital · JPAshikaga Red Cross Hospital · JPInternational University of Health and Welfare · JPTokyo Dental College Ichikawa General Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metformin is a commonly used drug for the treatment of diabetes. Accumulating evidence suggests that it exerts anti-cancer effects in many cancers, including colorectal cancer. However, the underlying molecular mechanisms of colorectal cancer metastasis remain unclear. Colorectal cancer cell lines were treated with metformin, and cell proliferation, invasion, and migration were analyzed in vitro. The relationship between metformin and the AMPK-mTOR axis was assessed by Western blot analysis and transfection with small interfering RNA. A colorectal cancer xenograft mouse model was used to observe the effects of metformin on liver metastasis. Immunohistochemical analysis was performed on liver metastatic tumors. In in vitro experiments, metformin significantly inhibited the proliferation, migration, and invasion only in HCT116 and SW837 cells, but not in HCT8 and Lovo cells. Only in HCT116 and SW837, a change in AMPK-mTOR expression was observed in a dose-dependent manner. In colorectal cancer xenograft mice, the liver metastatic rate (10% vs. 50%, p = 0.05) and the number of liver metastatic nodules (0.1/body vs. 1.2/body, p = 0.04) were significantly lower in the metformin group. Tumor proliferation and EMT were decreased and apoptosis was promoted only in metastatic liver tumors of mice treated with metformin. The molecular mechanism of the anti-cancer effects of metformin involves repression of mTOR pathways via AMPK activation. Moreover, the differences in metformin sensitivity depend on the response of the AMPK-mTOR pathway to metformin. Our study provides a theoretical basis for the anti-metastatic treatment of colorectal cancer using metformin.

Indexed as

Colorectal NeoplasmsLiver NeoplasmsMetforminAMP-Activated Protein KinasesAnimalsCarcinogenesisCell Line, TumorHumansMiceTOR Serine-Threonine KinasesAMP-Activated Protein KinasesMetforminTOR Serine-Threonine KinasesAMP-activated protein kinaseColorectal cancerMammalian target of rapamycinMetastasisMetformin

Identifiers

PMID35780231
OpenAlexW4283781941

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.