Evidence map›Paper›PMID 34324278›Full record

ArticleThoracic cancer2021

Circ_0000520 contributes to triple-negative breast cancer progression through mediating the miR-1296/ZFX axis.

Yong Zhou, Guoxi Ma, Shijun Peng, Min Tuo, Yinmou Li, Xianxiong Qin, Qiang Yu, Sijie Kuang, Hong Cheng, Jing Li

Open access · goldAbstract read
In one paragraph

Article in Thoracic cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 18% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 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

10 authors at 1 institution in 1 country.

Yong ZhouDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Guoxi MaDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Shijun PengDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Min TuoDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Yinmou LiDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Xianxiong QinDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Qiang YuDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Sijie KuangDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Hong ChengDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.
Jing LiDepartment of Breast Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, China.ORCID 0000-0002-5450-8155
The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTriple-negative breast cancer (TNBC) is the most aggressive subtype of breast cancer with a high incidence of local recurrence and metastasis. Circular RNAs (circRNAs) are implicated in the pathomechanism of TNBC. Here, we investigated the function of circ_0000520 in TNBC and its associated mechanism.

methodsReverse transcription quantitative polymerase chain reaction (RT-qPCR) and Western blot assay were used to measure RNA and protein expression. Cell proliferation was analyzed by cell counting kit-8 (CCK8) assay, flow cytometry and colony formation assay. Cell apoptosis was assessed by flow cytometry. Cell migration ability was analyzed by transwell migration and wound healing assays. Transwell invasion assay was conducted to analyze the invasion ability. Dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay, and RNA-pulldown assay were performed to verify the interaction between microRNA-1296 (miR-1296) and circ_0000520 or zinc finger protein X-linked (ZFX). Xenograft mice model was established to analyze the role of circ_0000520 in xenograft tumor growth in vivo.

resultsCirc_0000520 expression was upregulated in TNBC tissues and cell lines. Circ_0000520 knockdown suppressed the proliferation, migration, and invasion whereas induced the apoptosis of TNBC cells. miR-1296 was verified as a target of circ_0000520, and circ_0000520 silencing-mediated suppressive effects on the malignant potential of TNBC cells were partly overturned by miR-1296 knockdown. miR-1296 interacted with the 3' untranslated region (3'UTR) of ZFX, and ZFX overexpression partly reversed miR-1296 overexpression-mediated effects in TNBC cells. Circ_0000520 absence reduced ZFX expression by upregulating miR-1296 in TNBC cells. Circ_0000520 silencing suppressed xenograft tumor growth in vivo.

conclusionsCirc_0000520 contributed to TNBC development by binding to miR-1296 to induce ZFX expression.

Indexed as

AdultAgedAnimalsApoptosisCell Line, TumorCell MovementCell ProliferationDisease ProgressionGene Expression Regulation, NeoplasticHumansKruppel-Like Transcription FactorsMiceMicroRNAsMiddle AgedRNA, CircularTriple Negative Breast NeoplasmsKruppel-Like Transcription FactorsMicroRNAsRNA, Circularzinc finger protein, X-linkedcirc_0000520miR-1296triple-negative breast cancerZFX

Identifiers

PMID34324278
PMCPMC8447912
OpenAlexW3184389984

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.