Evidence map›Paper›PMID 29706623›Full record

ArticleCell death & disease2018

The deubiquitinase USP21 stabilizes MEK2 to promote tumor growth.

Wenjuan Li, Kaisa Cui, Edward V Prochownik, Youjun Li

Open access · goldAbstract read
In one paragraph

Article in Cell death & disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
2.3field-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

52 citing papers in PubMed, 76 citations in OpenAlex.

  1. Review
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  6. Article
  7. Targeting ubiquitination in disease and therapy.Signal transduction and targeted therapy · 2025
    Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Deubiquitylating Enzymes in Hepatocellular Carcinoma.International journal of biological sciences · 2025
    Review
  15. Review
  16. Article
  17. Review
  18. Article
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  20. Review
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

4 authors at 2 institutions in 2 countries.

Wenjuan LiHubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.
Kaisa CuiHubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.
Edward V ProchownikDivision of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC and The Department of Microbiology and Molecular Genetics, The University of Pittsburgh Medical Center, Pittsburgh, PA, 15224, USA.
Youjun LiHubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China. liy7@whu.edu.cn.
Wuhan University · CNUniversity of Pittsburgh Medical Center · US

Funding

Control of Metabolism and Energy-Sensing Pathways by c-MycR01CA174713 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PROCHOWNIK, EDWARD VICTOR · 2014 to 2018
$1.6M
NCI NIH HHS R01 CA174713
6 · The paper itself

Abstract

Deubiquitinases (DUBs) play essential roles in normal cell proliferation and tumor growth. However, the molecular mechanisms of DUBs on hepatocellular carcinoma (HCC) remains largely unknown. In this study, based on analysis of several HCC datasets, we found that the USP21 gene, which encodes a member of the ubiquitin-specific protease family, is highly amplified and overexpressed in HCCs, with the extent of this up-regulation significantly correlating with poor clinical outcomes. Inhibition of USP21 in HCC cell lines decreased cell proliferation, anchorage-independent growth, cell cycle progression, and in vivo tumor growth. Conversely, ectopic expression of USP21 transformed the normal human hepatocyte line HL-7702 and increased the tumorigenicity of the HCC cell line MHCC97L. Mechanistically, USP21 stabilized MEK2 by decreasing its polyubiquitination at Lys48, thereby activating the ERK signaling pathway. Importantly, MEK2 partially mediated the optimal expression of USP21-mediated oncogenic phenotypes. These findings indicate that USP21-mediated deubiquitination and stabilization of MEK2 play a critical role in HCC development.

Indexed as

Cell ProliferationAnimalsCarcinoma, HepatocellularCell CycleEnzyme ActivationExtracellular Signal-Regulated MAP KinasesGene Expression Regulation, NeoplasticHep G2 CellsHumansLiver NeoplasmsMaleMAP Kinase Kinase 2Mice, Inbred BALB CMice, NudePhosphorylationProtein StabilityExtracellular Signal-Regulated MAP KinasesMAP2K2 protein, humanMAP Kinase Kinase 2Ubiquitin ThiolesteraseUSP21 protein, human

Identifiers

PMID29706623
PMCPMC5924753
OpenAlexW2800815177

What OpenQuestion holds

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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.