Evidence map›Paper›PMID 25189530›Full record

ArticleCancer research2014

MYC activates stem-like cell potential in hepatocarcinoma by a p53-dependent mechanism.

Hirofumi Akita, Jens U Marquardt, Marian E Durkin, Mitsuteru Kitade, Daekwan Seo, Elizabeth A Conner, Jesper B Andersen, Valentina M Factor, Snorri S Thorgeirsson

Abstract read
In one paragraph

Article in Cancer research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

45 citing papers in PubMed, 84 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

9 authors at 2 institutions in 1 country.

Hirofumi AkitaLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Jens U MarquardtLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland. Department of Medicine I, Johannes Gutenberg University, Mainz, Germany.
Marian E DurkinLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Mitsuteru KitadeLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Daekwan SeoLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Elizabeth A ConnerLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Jesper B AndersenLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland. Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.
Valentina M FactorLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland.
Snorri S ThorgeirssonLaboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland. snorri_thorgeirsson@nih.gov.
Center for Cancer Research · USNational Cancer Institute · US

Funding

Cancer stem cells and human liver cancerZIABC011031 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI THORGEIRSSON, SNORRI · 2009 to 2014
$3.7M
Intramural NIH HHS ZIA BC011031
6 · The paper itself

Abstract

Activation of c-MYC is an oncogenic hallmark of many cancers, including liver cancer, and is associated with a variety of adverse prognostic characteristics. Despite a causative role during malignant transformation and progression in hepatocarcinogenesis, consequences of c-MYC activation for the biology of hepatic cancer stem cells (CSC) are undefined. Here, distinct levels of c-MYC overexpression were established by using two dose-dependent tetracycline-inducible systems in four hepatoma cell lines with different p53 mutational status. The CSCs were evaluated using side population (SP) approach as well as standard in vitro and in vivo assays. Functional repression of p53 was achieved by lentiviral shRNA transduction. The results show that c-MYC expression levels have a differential impact on liver CSC characteristics. At low levels, c-MYC activation led to increased proliferation and enhanced CSC properties including activation of reprogramming transcription factors and CSC marker expression (e.g., NANOG, OCT4, and EpCAM), expansion of SP, and acceleration of tumor growth upon subcutaneous transplantation into immunocompromised mice. However, when exceeding a threshold level, c-MYC induced a proapoptotic program and loss of CSC potential both in vitro and in vivo. Mechanistically, c-MYC-induced self-renewal capacity of liver cancer cells was exerted in a p53-dependent manner. Low c-MYC activation increased spheroid formation in p53-deficient tumor cells, whereas p53-dependent effects were blunted in the absence of c-MYC overexpression. Together, our results confirm the role of c-MYC as a master regulator during hepatocarcinogenesis and establish a new gatekeeper role for p53 in repressing c-MYC-induced CSC phenotype in liver cancer cells.

Indexed as

AnimalsCarcinogenesisCarcinoma, HepatocellularHep G2 CellsHumansLiver NeoplasmsMice, Inbred NODMice, SCIDNeoplasm TransplantationNeoplastic Stem CellsPhenotypeProto-Oncogene Proteins c-mycTumor BurdenTumor Suppressor Protein p53MYC protein, humanProto-Oncogene Proteins c-mycTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID25189530
PMCPMC4199878
OpenAlexW2049509484

What OpenQuestion holds

Textmetadata
LicenceTDM
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.