Evidence map›Paper›PMID 25010260›Full record

ArticleJournal of hepatology2014

YAP activation is an early event and a potential therapeutic target in liver cancer development.

Andrea Perra, Marta Anna Kowalik, Elena Ghiso, Giovanna Maria Ledda-Columbano, Luca Di Tommaso, Maria Maddalena Angioni, Carlotta Raschioni, Elena Testore, Massimo Roncalli, Silvia Giordano and 1 more

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In one paragraph

Article in Journal of hepatology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 149 papers.

0numbers the graph read from it
0cells of the map it votes in
149citing papers in PubMed
9.9field-weighted citation impact, top 1% 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

149 citing papers in PubMed, 253 citations in OpenAlex.

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89 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 1 country.

Andrea PerraDepartment of Biomedical Sciences, Unit of Oncology and Molecular Pathology, University of Cagliari, Cagliari, Italy.
Marta Anna KowalikDepartment of Biomedical Sciences, Unit of Oncology and Molecular Pathology, University of Cagliari, Cagliari, Italy.
Elena GhisoDepartment of Oncology, University of Torino School of Medicine, Candiolo Cancer Institute - FPO, IRCCS, 10060 Candiolo (Torino), Italy.
Giovanna Maria Ledda-ColumbanoDepartment of Biomedical Sciences, Unit of Oncology and Molecular Pathology, University of Cagliari, Cagliari, Italy.
Luca Di TommasoUniversity of Milano and Humanitas Clinical and Research Center, Rozzano, Milano, Italy.
Maria Maddalena AngioniDepartment of Biomedical Sciences, Unit of Oncology and Molecular Pathology, University of Cagliari, Cagliari, Italy.
Carlotta RaschioniUniversity of Milano and Humanitas Clinical and Research Center, Rozzano, Milano, Italy.
Elena TestoreDepartment of Oncology, University of Torino School of Medicine, Candiolo Cancer Institute - FPO, IRCCS, 10060 Candiolo (Torino), Italy.
Massimo RoncalliUniversity of Milano and Humanitas Clinical and Research Center, Rozzano, Milano, Italy.
Silvia GiordanoDepartment of Oncology, University of Torino School of Medicine, Candiolo Cancer Institute - FPO, IRCCS, 10060 Candiolo (Torino), Italy. Electronic address: silvia.giordano@unito.it.
Amedeo ColumbanoDepartment of Biomedical Sciences, Unit of Oncology and Molecular Pathology, University of Cagliari, Cagliari, Italy. Electronic address: columbano@unica.it.
University of Cagliari · ITCandiolo Cancer Institute · ITUniversity of Milan · ITHumanitas University · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND &

aimsAlthough the growth suppressing Hippo pathway has been implicated in hepatocellular carcinoma (HCC) pathogenesis, it is unknown at which stage of hepatocarcinogenesis its dysregulation occurs. We investigated in rat and human preneoplastic lesions whether overexpression of the transcriptional co-activator Yes-associated protein (YAP) is an early event.

methodsThe experimental model used is the resistant-hepatocyte (R-H) rat model. Gene expression was determined by qRT-PCR or immunohistochemistry. Forward genetic experiments were performed in human HCC cells and in murine oval cells.

resultsAll foci of preneoplastic hepatocytes, generated in rats 4weeks after diethylnitrosamine (DENA) treatment, displayed YAP accumulation. This was associated with down-regulation of the β-TRCP ligase, known to mediate YAP degradation, and of microRNA-375, targeting YAP. YAP accumulation was paralleled by the up-regulation of its target genes. Increased YAP expression was also observed in human early dysplastic nodules and adenomas. Animal treatment with verteporfin (VP), which disrupts the formation of the YAP-TEAD complex, significantly reduced preneoplastic foci and oval cell proliferation. In vitro experiments confirmed that VP-mediated YAP inhibition impaired cell growth in HCC and oval cells; notably, oval cell transduction with wild type or active YAP conferred tumorigenic properties in vitro and in vivo.

conclusionsThese results suggest that (i) YAP overexpression is an early event in rat and human liver tumourigenesis; (ii) it is critical for the clonal expansion of carcinogen-initiated hepatocytes and oval cells, and (iii) VP-induced disruption of the YAP-TEAD interaction may provide an important approach for the treatment of YAP-overexpressing cancers.

Indexed as

Adaptor Proteins, Signal TransducingAdenoma, Liver CellAdultAgedAnimalsAntineoplastic AgentsApoptosis Regulatory ProteinsCarcinoma, HepatocellularCell Cycle ProteinsCell Line, TumorCell ProliferationFemaleGene ExpressionHippo Signaling PathwayHumansLiver NeoplasmsAdaptor Proteins, Signal TransducingAntineoplastic AgentsApoptosis Regulatory ProteinsCell Cycle ProteinsMicroRNAsMIRN375 microRNA, humanPhosphoproteinsPorphyrinsProtein Serine-Threonine KinasesTranscription FactorsVerteporfinYAP1 protein, humanYap1 protein, mouseYap1 protein, ratYAP-Signaling ProteinsHCCHippo pathwayPreneoplastic stagesTCPOBOPVerteporfin

Identifiers

PMID25010260
OpenAlexW1994302891

What OpenQuestion holds

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Registered trials

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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.