Evidence map›Paper›PMID 30893604›Full record

ArticleCell reports2019

DBC1 Regulates p53 Stability via Inhibition of CBP-Dependent p53 Polyubiquitination.

Oluwatoyin E Akande, Priyadarshan K Damle, Marius Pop, Nicholas E Sherman, Barbara B Szomju, Larisa V Litovchick, Steven R Grossman

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Downregulation of PTEN Promotes AutophagyFrontiers in cardiovascular medicine · 2022
    Article
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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

7 authors at 4 institutions in 1 country.

Oluwatoyin E AkandeDepartment of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, VA, USA; VCU Massey Cancer Center, VCU, Richmond, VA, USA.
Priyadarshan K DamleDepartment of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, VA, USA; VCU Massey Cancer Center, VCU, Richmond, VA, USA.
Marius PopKronos Bio, Inc., Cambridge, MA, USA.
Nicholas E ShermanW.M. Keck Biomedical Mass Spectrometry Laboratory, University of Virginia, Charlottesville, VA, USA.
Barbara B SzomjuDepartment of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, VA, USA; VCU Massey Cancer Center, VCU, Richmond, VA, USA.
Larisa V LitovchickDepartment of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, VA, USA; VCU Massey Cancer Center, VCU, Richmond, VA, USA.
Steven R GrossmanDepartment of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, VA, USA; VCU Massey Cancer Center, VCU, Richmond, VA, USA. Electronic address: steven.grossman@vcuhealth.org.
Virginia Commonwealth University · USUniversity of Virginia · USVCU Massey Comprehensive Cancer CenterVirginia Cancer Institute · US

Funding

Virus Vector Shared ResourceP30CA016059 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI Keri R Maher · 1985 to 2026
$51.0M
Role of p300/CBP and hHR23 Proteins in p53 RegulationR01CA107532 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI GROSSMAN, STEVEN R. · 2004 to 2014
$2.6M
NCI NIH HHS P30 CA016059NCI NIH HHS R01 CA107532
6 · The paper itself

Abstract

The control of p53 protein stability is critical to its tumor suppressor functions. The CREB binding protein (CBP) transcriptional co-activator co-operates with MDM2 to maintain normally low physiological p53 levels in cells via exclusively cytoplasmic E4 polyubiquitination activity. Using mass spectrometry to identify nuclear and cytoplasmic CBP-interacting proteins that regulate compartmentalized CBP E4 activity, we identified deleted in breast cancer 1 (DBC1) as a stoichiometric CBP-interacting protein that negatively regulates CBP-dependent p53 polyubiquitination, stabilizes p53, and augments p53-dependent apoptosis. TCGA analysis demonstrated that solid tumors often retain wild-type p53 alleles in conjunction with DBC1 loss, supporting the hypothesis that DBC1 is selected for disruption during carcinogenesis as a surrogate for p53 functional loss. Because DBC1 maintains p53 stability in the nucleus, where p53 exerts its tumor-suppressive transcriptional function, replacement of DBC1 functionality in DBC1-deleted tumors might enhance p53 function and chemosensitivity for therapeutic benefit.

Indexed as

ApoptosisUbiquitinationAdaptor Proteins, Signal TransducingCell NucleusHEK293 CellsHumansMCF-7 CellsNeoplasmsPeptide FragmentsProtein StabilitySialoglycoproteinsTumor Suppressor Protein p53Adaptor Proteins, Signal Transducingbone sialoprotein (35-62), humanCCAR2 protein, humanPeptide FragmentsSialoglycoproteinsTP53 protein, humanTumor Suppressor Protein p53apoptosisCBPDBC1p53ubiquitin

Identifiers

PMID30893604
PMCPMC6478392
OpenAlexW2922942994

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.