Evidence map›Paper›PMID 22649503›Full record

ArticlePloS one2012

Suppression of AP1 transcription factor function in keratinocyte suppresses differentiation.

Bingshe Han, Ellen A Rorke, Gautam Adhikary, Yap Ching Chew, Wen Xu, Richard L Eckert

RetractedOpen access · goldAbstract readRetracted Publication
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.4field-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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Squamous-state excursions activate APOBEC3A in cancer.bioRxiv : the preprint server for biology · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Interleukin-4 Downregulation of Involucrin Expression in Human Epidermal Keratinocytes Involves Stat6 Sequestration of the Coactivator CREB-Binding Protein.Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research · 2016
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Bingshe HanDepartment of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland, United States of America.
Ellen A Rorke
Gautam Adhikary
Yap Ching Chew
Wen Xu
Richard L Eckert
University of Maryland, Baltimore · US

Funding

UNIVERSITY OF MARYLAND GREENEBAUM CANCER CENTERSUPPORT GRANTP30CA134274 · NCI · UNIVERSITY OF MARYLAND BALTIMORE · PI Vu H. Duong · 2008 to 2026
$51.0M
MAP KINASES REGULATE INVOLUCRIN GENE EXPRESSIONR01AR046494 · NIAMS · UNIVERSITY OF MARYLAND BALTIMORE · PI ECKERT, RICHARD L. · 2000 to 2010
$1.9M
NCI NIH HHS P30 CA134274NIAMS NIH HHS R01 AR046494
6 · The paper itself

Abstract

Our previous study shows that inhibiting activator protein one (AP1) transcription factor function in murine epidermis, using dominant-negative c-jun (TAM67), increases cell proliferation and delays differentiation. To understand the mechanism of action, we compare TAM67 impact in mouse epidermis and in cultured normal human keratinocytes. We show that TAM67 localizes in the nucleus where it forms TAM67 homodimers that competitively interact with AP1 transcription factor DNA binding sites to reduce endogenous jun and fos factor binding. Involucrin is a marker of keratinocyte differentiation that is expressed in the suprabasal epidermis and this expression requires AP1 factor interaction at the AP1-5 site in the promoter. TAM67 interacts competitively at this site to reduce involucrin expression. TAM67 also reduces endogenous c-jun, junB and junD mRNA and protein level. Studies with c-jun promoter suggest that this is due to reduced transcription of the c-jun gene. We propose that TAM67 suppresses keratinocyte differentiation by interfering with endogenous AP1 factor binding to regulator elements in differentiation-associated target genes, and by reducing endogenous c-jun factor expression.

Indexed as

AnimalsBinding, CompetitiveCell DifferentiationCells, CulturedChromatin ImmunoprecipitationDNA PrimersElectrophoretic Mobility Shift AssayFluorescent Antibody TechniqueGene Expression RegulationHumansImmunoblottingImmunoprecipitationKeratinocytesMicePeptide FragmentsProtein PrecursorsDNA PrimersinvolucrinPeptide FragmentsProtein PrecursorsProto-Oncogene Proteins c-junTAM67 peptideTranscription Factor AP-1

Identifiers

PMID22649503
PMCPMC3359321
OpenAlexW2042631510

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.