Evidence map›Paper›PMID 28404930›Full record

ArticleOncotarget2017

MicroRNA regulation of progesterone receptor in breast cancer.

Avital Gilam, Ayelet Shai, Itamar Ashkenazi, Liat Appel Sarid, Assi Drobot, Amitai Bickel, Noam Shomron

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2017. 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
1.5field-weighted citation impact, top 20% 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, 35 citations in OpenAlex.

  1. microRNAs as Biomarkers of Breast Cancer.International journal of molecular sciences · 2025
    Review
  2. Expert opinion on therapeutic targets · 2024
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  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. MicroRNAs as biomarkers for breast cancer.Acta bio-medica : Atenei Parmensis · 2021
    Article
  9. Article
  10. Understanding the Impact of Uterine Fibroids on Human Endometrium Function.Frontiers in cell and developmental biology · 2021
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
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

7 authors at 4 institutions in 1 country.

Avital GilamSackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Ayelet ShaiOncology Department, Galilee Medical Center, Nahariya, Israel.
Itamar AshkenaziHillel Yaffe Medical Center, Hedera, Israel.
Liat Appel SaridOncology Department, Galilee Medical Center, Nahariya, Israel.
Assi DrobotOncology Department, Galilee Medical Center, Nahariya, Israel.
Amitai BickelOncology Department, Galilee Medical Center, Nahariya, Israel.
Noam ShomronSackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Western Galilee Hospital · ILTel Aviv University · ILBar-Ilan University · ILHillel Yaffe Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hormone receptor status is of significant value when deciding on anti-estrogenic adjuvant therapy for breast cancer tumors. However, while estrogen receptor (ER) regulation was intensively studied, the regulation of progesterone receptor (PR) levels has not been extensively investigated. MicroRNAs (miRNAs, miRs) are post-transcriptional negative regulators of gene expression involved in diverse cellular processes. The aim of this study was to identify miRNAs that regulate PR in breast cancer.We mapped potential miRNA binding sites for miR-181a, miR-23a and miR-26b on PR mRNA and demonstrated a direct regulation of PR by these three miRNAs by in-vitro Luciferase binding assays. Over-expression of each miRNA in MCF-7 cells resulted in a reduction in the expression levels of PR mRNA. Then, expression levels of these miRNAs were measured in Formalin-Fixed, Paraffin-Embedded (FFPE) samples of 29 ER-positive breast cancer tumors and adjacent normal breast tissues. A significant reciprocal correlation between PR mRNA and the miRNA levels were identified suggesting a role for miR-181a, miR-23a and miR-26b in PR regulation in breast cancer. Moreover, the average expression fold-changes of the three miRNAs between cancerous and normal tissues displayed an opposite trend when analyzing according to Immuno-histochemistry(IHC) status. Furthermore, miR-181a and miR-26b were found to be over-expressed in most tumor tissues supporting their role in ER-positive breast cancer development. We conclude that miR-181a, miR-23a and miR-26b act as negative regulators of PR expression in ER-positive breast cancer. The diagnostic and prognostic potential of these miRNAs in breast cancer should be further evaluated.

Indexed as

Gene Expression Regulation, NeoplasticRNA Interference3' Untranslated RegionsAdultAgedAged, 80 and overBreast NeoplasmsCell Line, TumorFemaleGene ExpressionGenes, ReporterHumansMicroRNAsMiddle AgedNeoplasm StagingReceptors, Progesterone3' Untranslated RegionsMicroRNAsReceptors, ProgesteroneRNA, Messengerbreast cancermicroRNAmiR-181amiR-23aprogesterone receptor

Identifiers

PMID28404930
PMCPMC5432230
OpenAlexW2589704771

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.