Evidence map›Paper›PMID 31789394›Full record

ArticleInternational journal of oncology2020

MicroRNA‑21 contributes to renal cell carcinoma cell invasiveness and angiogenesis via the PDCD4/c‑Jun (AP‑1) signalling pathway.

Bo Fan, Yiying Jin, Hongshuo Zhang, Rui Zhao, Man Sun, Mengfan Sun, Xiaoying Yuan, Wei Wang, Xiaogang Wang, Zhiqi Chen and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in International journal of oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. MiR-21 modulatesNon-coding RNA research · 2026
    Article
  3. The Role of miRNA-21 in the Metastasis of Hepatocellular Carcinoma as a Therapeutic Target.International journal of hematology-oncology and stem cell research · 2026
    Review
  4. Targeting miRNAs in renal cell carcinoma: emerging therapeutic strategies.International journal of clinical oncology · 2025
    Review
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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

15 authors at 2 institutions in 1 country.

Bo FanDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Yiying JinDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Hongshuo ZhangDepartment of Biochemistry, Institute of Glycobiology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China.
Rui ZhaoDepartment of Pharmacy, Zhongshan College of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Man SunDepartment of Clinical Medicine, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Mengfan SunDepartment of Pharmacy, Zhongshan College of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Xiaoying YuanDepartment of Anatomy, College of Basic Medicine, Dalian Medical University, Dalian, Liaoning 116044, P.R. China.
Wei WangDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Xiaogang WangDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Zhiqi ChenDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Wankai LiuDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Na YuDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Qun WangDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Tingjiao LiuDepartment of Oral Pathology, College of Stomatology of Dalian Medical University, Dalian, Liaoning 116044, P.R. China.
Xiancheng LiDepartment of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.
Dalian Medical University · CNSecond Affiliated Hospital of Dalian Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Accumulating evidence has demonstrated that microRNAs are associated with malignant biological behaviour, including tumorigenesis, cancer progression and metastasis via the regulation of target gene expression. Our previous study demonstrated that programmed cell death protein 4 (PDCD4), which is a tumour suppressor gene, is a target of microRNA‑21 (miR‑21), which affects the proliferation and transformation capabilities of renal cell carcinoma (RCC) cells. However, the role of miR‑21 in the molecular mechanism underlying the migration, invasion and angiogenesis of RCC remains poorly understood. The effects of miR‑21 on the invasion, migration and angiogenesis of RCC cells was determined through meta‑analysis and regulation of miR‑21 expression in vitro. After searching several databases, 6 articles including a total of 473 patients met the eligibility criteria for this analysis. The combined results of the meta‑analysis revealed that increased miR‑21 expression was significantly associated with adverse prognosis in patients with RCC, with a pooled hazard ratio estimate of 1.740. In in vitro experiments, we demonstrated that a miR‑21 inhibitor decreased the number of migrating and invading A498 and 786‑O RCC cells, along with a decrease in PDCD4, c‑Jun, matrix metalloproteinase (MMP)2 and MMP9 expression. Additionally, inhibition of miR‑21 was revealed to reduce tube formation and tube junctions in the endothelial cell line HMEC‑1 by affecting the expression of angiotensin‑1 and vascular endothelial growth factor A, whereas PDCD4 small interfering RNA exerted opposite effects on the same cells. Overall, these findings, along with evidence‑based molecular biology, demonstrated that miR‑21 expression promoted the migration, invasion and angiogenic abilities of RCC cells by directly targeting the PDCD4/c‑Jun signalling pathway. The results may help elucidate the molecular mechanism underlying the development and progression of RCC and provide a promising target for microRNA‑based therapy.

Indexed as

ApoptosisApoptosis Regulatory ProteinsBiomarkers, TumorCarcinoma, Renal CellCell ProliferationFollow-Up StudiesGene Expression Regulation, NeoplasticHumansKidney NeoplasmsMicroRNAsNeovascularization, PathologicPrognosisRNA-Binding ProteinsTranscription Factor AP-1Tumor Cells, CulturedApoptosis Regulatory ProteinsBiomarkers, TumorMicroRNAsMIRN21 microRNA, humanPDCD4 protein, humanRNA-Binding ProteinsTranscription Factor AP-1

Identifiers

PMID31789394
PMCPMC6910186
OpenAlexW2989972906

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.