Evidence map›Paper›PMID 22771034›Full record

ArticleDevelopmental cell2012

The LIM protein Ajuba restricts the second heart field progenitor pool by regulating Isl1 activity.

Hagen R Witzel, Benno Jungblut, Chong Pyo Choe, J Gage Crump, Thomas Braun, Gergana Dobreva

Open access · bronzeAbstract read
In one paragraph

Article in Developmental cell, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
3.1field-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

55 citing papers in PubMed, 81 citations in OpenAlex.

  1. Article
  2. Article
  3. Chemical-induced heart defects using a transgenic zebrafish model.Toxicological sciences : an official journal of the Society of Toxicology · 2025
    Article
  4. The molecular mechanisms of cardiac development and related diseases.Signal transduction and targeted therapy · 2024
    Review
  5. Article
  6. Article
  7. The second heart field: the first 20 years.Mammalian genome : official journal of the International Mammalian Genome Society · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. From Stripes to a Beating Heart: Early Cardiac Development in Zebrafish.Journal of cardiovascular development and disease · 2021
    Review
  15. Article
  16. Spotlight on Isl1: A Key Player in Cardiovascular Development and Diseases.Frontiers in cell and developmental biology · 2021
    Review
  17. Role of carotenoids and retinoids during heart development.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2020
    Review
  18. Review
  19. Article
  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.

Hagen R WitzelOrigin of Cardiac Cell Lineages Group, Max Planck Institute for Heart and Lung Research, Parkstrasse 1, Bad Nauheim, Germany.
Benno Jungblut
Chong Pyo Choe
J Gage Crump
Thomas Braun
Gergana Dobreva
Max Planck Institute for Heart and Lung Research · DEUniversity of Southern California · US

Funding

Epithelial-mesenchymal interactions in facial patterningR01DE018405 · NIDCR · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CRUMP, GAGE D · 2007 to 2017
$4.1M
NIDCR NIH HHS R01 DE018405
6 · The paper itself

Abstract

Morphogenesis of the heart requires tight control of cardiac progenitor cell specification, expansion, and differentiation. Retinoic acid (RA) signaling restricts expansion of the second heart field (SHF), serving as an important morphogen in heart development. Here, we identify the LIM domain protein Ajuba as a crucial regulator of the SHF progenitor cell specification and expansion. Ajuba-deficient zebrafish embryos show an increased pool of Isl1(+) cardiac progenitors and, subsequently, dramatically increased numbers of cardiomyocytes at the arterial and venous poles. Furthermore, we show that Ajuba binds Isl1, represses its transcriptional activity, and is also required for autorepression of Isl1 expression in an RA-dependent manner. Lack of Ajuba abrogates the RA-dependent restriction of Isl1(+) cardiac cells. We conclude that Ajuba plays a central role in regulating the SHF during heart development by linking RA signaling to the function of Isl1, a key transcription factor in cardiac progenitor cells.

Indexed as

AnimalsAnimals, Genetically ModifiedEmbryonic Stem CellsFemaleHeartHEK293 CellsHomeobox Protein Nkx-2.5HumansLIM Domain ProteinsLIM-Homeodomain ProteinsMaleMiceMyocytes, CardiacNIH 3T3 CellsRepressor ProteinsSignal TransductionAjuba protein, zebrafishHomeobox Protein Nkx-2.5insulin gene enhancer binding protein Isl-1LIM Domain ProteinsLIM-Homeodomain ProteinsNkx2.5 protein, zebrafishRepressor ProteinsTranscription FactorsTretinoinZebrafish Proteins

Identifiers

PMID22771034
PMCPMC3671491
OpenAlexW1986264157

What OpenQuestion holds

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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.