Evidence map›Paper›PMID 29183284›Full record

ArticleBMC cancer2017

Robust expression of tumor suppressor miRNA's let-7 and miR-195 detected in plasma of Saudi female breast cancer patients.

Amal Qattan, Haya Intabli, Wafa Alkhayal, Chafica Eltabache, Taher Tweigieri, Suad Bin Amer

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
2.8field-weighted citation impact, top 9% 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

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 68 citations in OpenAlex.

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  18. Regulation of angiogenesis by microRNAs in cancer.Molecular medicine reports · 2021
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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

6 authors at 3 institutions in 2 countries.

Amal QattanBreast Cancer Research, Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, P.O.Box 3354, Riyadh, 11211, Saudi Arabia. akattan@kfshrc.edu.sa.ORCID http://orcid.org/0000-0001-7362-789X
Haya IntabliBreast Cancer Research, Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, P.O.Box 3354, Riyadh, 11211, Saudi Arabia.
Wafa AlkhayalCollege of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
Chafica EltabacheBreast Cancer Research, Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, P.O.Box 3354, Riyadh, 11211, Saudi Arabia.
Taher TweigieriDepartment of Oncology, King Faisal Specialist Hospital and Research centre, Riyadh, Saudi Arabia.
Suad Bin AmerBreast Cancer Research, Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, P.O.Box 3354, Riyadh, 11211, Saudi Arabia. suad@kfshrc.edu.sa.
King Faisal Specialist Hospital & Research Centre · SAAlfaisal University · SAPrincess Nourah bint Abdulrahman University · SA

Funding

King Faisal Specialist Hospital and Research centre 2110016 and 2160029
6 · The paper itself

Abstract

backgroundFemale breast cancer is frequently diagnosed at a later stage and the leading cause of cancer deaths world-wide. Levels of cell-free circulating microRNAs (miRNAs) can potentially be used as biomarkers to measure disease progression in breast cancer patients in a non-invasive way and are therefore of high clinical value.

methodsUsing quantitative RT-PCR, circulating miRNAs were measured in blood samples collected from disease-free individuals (n = 34), triple-negative breast tumours (TNBC) (n = 36) and luminal tumours (n = 57). In addition to intergroup comparisons, plasma miRNA expression levels of all groups were analyzed against RNASeq data from cancerous breast tissue via The Cancer Genome Atlas (TCGA).

resultsA differential set of 18 miRNAs were identified in the plasma of breast cancer patients and 10 miRNAs were uniquely identified based on ROC analysis. The most striking findings revealed elevated tumor suppressor let-7 miRNA in luminal breast cancer patients, irrespective of subtype, and elevated miR-195 in plasma of TNBC breast cancer patients. In contrast, hsa-miR-195 and let-7 miRNAs were absent from cancerous TCGA tissue and strongly expressed in surrounding non-tumor tissue indicating that cancerous cells may selectively export tumor suppressor hsa-miR-195 and let-7 miRNAs in order to maintain oncogenesis.

conclusionsWhile studies have indicated that the restoration of let-7 and miR-195 may be a potential therapy for cancer, these results suggested that tumor cells may selectively export hsa-miR-195 and let-7 miRNAs thereby neutralizing their potential therapeutic effect. However, in order to facilitate earlier detection of breast cancer, blood based screening of hsa-miR-195 and let-7 may be beneficial in a female patient cohort.

Indexed as

Up-RegulationAgedBiomarkers, TumorBreast NeoplasmsEarly Detection of CancerFemaleGene Expression Regulation, NeoplasticHumansMicroRNAsReverse Transcriptase Polymerase Chain ReactionSaudi ArabiaSequence Analysis, RNATriple Negative Breast NeoplasmsBiomarkers, TumorMicroRNAsMIRN195 microRNA, humanmirnlet7 microRNA, humanCancer therapyCirculating biomarkersCirculating miRNAsFASN pathwayPlasma versus tissueROC curvesSecretionTriple-negative breast cancer (TNBC)

Identifiers

PMID29183284
PMCPMC5706292
OpenAlexW2768169798

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.