Evidence map›Paper›PMID 26174965›Full record

ArticleHepatology (Baltimore, Md.)2015

NUMB phosphorylation destabilizes p53 and promotes self-renewal of tumor-initiating cells by a NANOG-dependent mechanism in liver cancer.

Hifzur R Siddique, Douglas E Feldman, Chia-Lin Chen, Vasu Punj, Hiroshi Tokumitsu, Keigo Machida

Abstract read
In one paragraph

Article in Hepatology (Baltimore, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.0field-weighted citation impact, top 12% 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

33 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
  2. Endocytic Control of Cell-Autonomous and Non-Cell-Autonomous Functions of p53.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. The CRL7Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  7. Article
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  11. Article
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  16. Review
  17. Article
  18. Review
  19. Drug resistance and Cancer stem cells.Cell communication and signaling : CCS · 2021
    Review
  20. Article
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

6 authors at 2 institutions in 2 countries.

Hifzur R SiddiqueDepartment of Molecular Microbiology and Immunology, University of Southern California, Keck School of Medicine, Los Angeles, CA.
Douglas E FeldmanDepartment of Molecular Microbiology and Immunology, University of Southern California, Keck School of Medicine, Los Angeles, CA.
Chia-Lin ChenDepartment of Molecular Microbiology and Immunology, University of Southern California, Keck School of Medicine, Los Angeles, CA.
Vasu PunjNorris Comprehensive Cancer Center, University of Southern California, Keck School of Medicine, Los Angeles, CA.
Hiroshi TokumitsuDivision of Medical Bioengineering, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
Keigo MachidaDepartment of Molecular Microbiology and Immunology, University of Southern California, Keck School of Medicine, Los Angeles, CA.
University of Southern California · USOkayama University · JP

Funding

USC/NORRIS COMPREHENSIVE CANCER CENTER (CORE) SUPPORTP30CA014089 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Fumito Ito · 1985 to 2026
$181.4M
The Southernearch Center for ALPD and CirrhosisP50AA011999 · NIAAA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ANNA S. GUKOVSKAYA · 1999 to 2026
$45.8M
USC RESEARCH CENTER FOR LIVER DISEASES: PILOT PROGRAMSP30DK048522 · NIDDK · UNIVERSITY OF SOUTHERN CALIFORNIA · PI KAPLOWITZ, NEIL · 1995 to 2020
$21.8M
NON-PARENCHYMAL LIVER CELL CORER24AA012885 · NIAAA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI TSUKAMOTO, HIDEKAZU · 2001 to 2025
$8.1M
Multiple Risk Behavior Intervention in Health Care SettingsR01CA123228 · NCI · DANA-FARBER CANCER INST · PI EMMONS, KAREN M. · 2007 to 2011
$3.3M
Nanog-positive cancer stem cells in and liver oncogenesis by alcohol and HCVR01AA018857 · NIAAA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI MACHIDA, KEIGO · 2009 to 2013
$1.8M
Confocal Microscopy Imaging SystemS10RR022508 · NCRR · UNIVERSITY OF SOUTHERN CALIFORNIA · PI OOKHTENS, MURAD · 2007 to 2007
$415k
NCI NIH HHS P01 CA123228NCI NIH HHS P30 CA014089NCI NIH HHS P30CA014089NCI NIH HHS R01 CA123228NCRR NIH HHS S10 RR022508NIAAA NIH HHS P50 AA011999NIAAA NIH HHS P50 AA11999NIAAA NIH HHS R01 AA018857NIAAA NIH HHS R24 AA012885NIAAA NIH HHS R24AA012885NIDDK NIH HHS P30 DK048522
6 · The paper itself

Abstract

unlabelledStem cell populations are maintained through self-renewing divisions in which one daughter cell commits to a particular fate whereas the other retains the multipotent characteristics of its parent. The NUMB, a tumor suppressor, in conjunction with another tumor-suppressor protein, p53, preserves this property and acts as a barrier against deregulated expansion of tumor-associated stem cells. In this context, NUMB-p53 interaction plays a crucial role to maintain the proper homeostasis of both stem cells, as well as differentiated cells. Because the molecular mechanism governing the assembly and stability of the NUMB-p53 interaction/complex are poorly understood, we tried to identify the molecule(s) that govern this process. Using cancer cell lines, tumor-initiating cells (TICs) of liver, the mouse model, and clinical samples, we identified that phosphorylations of NUMB destabilize p53 and promote self-renewal of TICs in a pluripotency-associated transcription factor NANOG-dependent manner. NANOG phosphorylates NUMB by atypical protein kinase C zeta (aPKCζ), through the direct induction of Aurora A kinase (AURKA) and the repression of an aPKCζ inhibitor, lethal (2) giant larvae. By radioactivity-based kinase activity assays, we showed that NANOG enhances kinase activities of both AURKA and aPKCζ, an important upstream process for NUMB phosphorylation. Phosphorylation of NUMB by aPKCζ destabilizes the NUMB-p53 interaction and p53 proteolysis and deregulates self-renewal in TICs.

conclusionPost-translational modification of NUMB by the NANOG-AURKA-aPKCζ pathway is an important event in TIC self-renewal and tumorigenesis. Hence, the NANOG-NUMB-p53 signaling axis is an important regulatory pathway for TIC events in TIC self-renewal and liver tumorigenesis, suggesting a therapeutic strategy by targeting NUMB phosphorylation. Further in-depth in vivo and clinical studies are warranted to verify this suggestion.

Indexed as

AC133 AntigenAnimalsAntigens, CDAurora Kinase AGlycoproteinsHep G2 CellsHomeodomain ProteinsHumansLiver NeoplasmsMembrane ProteinsMiceNanog Homeobox ProteinNeoplastic Stem CellsNerve Tissue ProteinsPeptidesPhosphorylationAC133 AntigenAntigens, CDAURKA protein, humanAurora Kinase AGlycoproteinsHomeodomain ProteinsMembrane ProteinsNanog Homeobox ProteinNANOG protein, humanNerve Tissue ProteinsNUMB protein, humanPeptidesProtein Kinase CProtein Kinase C zetaTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID26174965
PMCPMC4618247
OpenAlexW1919142410

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.