Evidence map›Paper›PMID 27596137›Full record

ArticleJournal of experimental & clinical cancer research : CR2016

MiR-137 and miR-34a directly target Snail and inhibit EMT, invasion and sphere-forming ability of ovarian cancer cells.

Peixin Dong, Ying Xiong, Hidemichi Watari, Sharon J B Hanley, Yosuke Konno, Kei Ihira, Takahiro Yamada, Masataka Kudo, Junming Yue, Noriaki Sakuragi

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 1 pooled it
6.3field-weighted citation impact, top 3% 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

75 citing papers in PubMed, 1 synthesis or guideline pooled it, 121 citations in OpenAlex.

  1. Pooled it
  2. Review
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  5. Recent Advances in Cancer Immunotherapy Aided by Regulatory Non-Coding RNA: A Review.Asian Pacific journal of cancer prevention : APJCP · 2025
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  9. Epicardial EMT and cardiac repair: an update.Stem cell research & therapy · 2024
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  11. Review
  12. miR-137: a potential therapeutic target for lung cancer.Frontiers in cell and developmental biology · 2024
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article

15 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 3 countries.

Peixin DongDepartment of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan. dpx1cn@gmail.com.
Ying XiongDepartment of Gynecology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.
Hidemichi WatariDepartment of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan. watarih@med.hokudai.ac.jp.
Sharon J B HanleyDepartment of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Yosuke KonnoDepartment of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Kei IhiraDepartment of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Takahiro YamadaDepartment of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Masataka KudoDepartment of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Junming YueDepartment of Pathology and Laboratory Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA. jyue@uthsc.edu.
Noriaki SakuragiDepartment of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo, 0608638, Japan.
Hokkaido University · JPSun Yat-sen University · CNUniversity of Tennessee Health Science Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn ovarian cancer (OC) cells, Snail was reported to induce the epithelial-to-mesenchymal transition (EMT), which is a critical step in OC metastasis. At present little is known about controlling Snail expression in OC cells by using specific microRNAs (miRNAs).

methodsWe first used a computational target prediction analysis to identify 6 candidate miRNAs that bind to the 3'-untranslated region (3'-UTR) region of the Snail mRNA. Among these miRNAs, two miRNAs (miR-137 and miR-34a) with a potential to regulate Snail were validated by quantitative real-time PCR, Western blot analysis, and Snail 3'-UTR reporter assays. We assessed the effects of miR-137 and miR-34a on EMT, invasion and sphere formation in OC cells. We also evaluated the expression of miR-137 and miR-34a in OC tissues and adjacent normal tissues and analyzed the relationship between their expression and patient survival.

resultsWe report that OC tissues possess significantly decreased levels of miR-137 and miR-34a and increased expression of Snail when compared to their adjacent normal tissues, and lower miR-137 and miR-34a expression correlates with worse patient survival. Using luciferase constructs containing the 3'-UTR region of Snail mRNA combined with miRNA overexpression and mutagenesis, we identified miR-137 and miR-34a as direct suppressors of Snail in OC cells. The introduction of miR-137 and miR-34a resulted in the suppression of Snail at both the transcript and protein levels, and effectively suppressed the EMT phenotype and sphere formation of OC cells. However, the inhibition of miR-137 and miR-34a with antisense oligonucleotides promoted EMT and OC cell invasion. Moreover, ectopic expression of Snail significantly reversed the inhibitory effects of miR-137 and miR-34a on OC cell invasion and sphere formation.

conclusionsThese findings suggest that both miR-137 and miR-34a act as Snail suppressors to negatively regulate EMT, invasive and sphere-forming properties of OC cells.

Indexed as

Epithelial-Mesenchymal Transition3' Untranslated RegionsCell Line, TumorFemaleGene Expression Regulation, NeoplasticHumansMicroRNAsNeoplasm InvasivenessOvarian NeoplasmsSignal TransductionSnail Family Transcription FactorsSpheroids, CellularSurvival AnalysisTumor Cells, Cultured3' Untranslated RegionsMicroRNAsMIRN137 microRNA, humanMIRN34 microRNA, humanSNAI1 protein, humanSnail Family Transcription FactorsCancer stemnessEMTmicroRNA-137microRNA-34aOvarian cancerSnail

Identifiers

PMID27596137
PMCPMC5011787
OpenAlexW2513798760

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.