Evidence map›Paper›PMID 25664163›Full record

ArticleEvoDevo2014

Roles of retinoic acid and Tbx1/10 in pharyngeal segmentation: amphioxus and the ancestral chordate condition.

Demian Koop, Jie Chen, Maria Theodosiou, João E Carvalho, Susana Alvarez, Angel R de Lera, Linda Z Holland, Michael Schubert

Open access · goldAbstract read
In one paragraph

Article in EvoDevo, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

16 citing papers in PubMed, 33 citations in OpenAlex.

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  10. Evolution and development of the fish jaw skeleton.Wiley interdisciplinary reviews. Developmental biology · 2019
    Review
  11. Article
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  13. Article
  14. Mouth development.Wiley interdisciplinary reviews. Developmental biology · 2017
    Review
  15. Article
  16. Review
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

8 authors at 4 institutions in 3 countries.

Demian KoopMarine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0202 USA.
Jie ChenInstitut de Génomique Fonctionnelle de Lyon (CNRS UMR 5242, UCBL, ENS, INRA 1288), Ecole Normale Supérieure de Lyon, 69364 Lyon, Cedex 07, France.
Maria TheodosiouInstitut de Génomique Fonctionnelle de Lyon (CNRS UMR 5242, UCBL, ENS, INRA 1288), Ecole Normale Supérieure de Lyon, 69364 Lyon, Cedex 07, France.
João E CarvalhoSorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France ; CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France.
Susana AlvarezDepartamento de Química Orgánica, Universidade de Vigo, 33610 Vigo, Spain.
Angel R de LeraDepartamento de Química Orgánica, Universidade de Vigo, 33610 Vigo, Spain.
Linda Z HollandMarine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0202 USA.
Michael SchubertSorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France ; CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France.
Centre National de la Recherche Scientifique · FRScripps Institution of Oceanography · USUniversidade de Vigo · ESUniversité Claude Bernard Lyon 1 · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough chordates descend from a segmented ancestor, the evolution of head segmentation has been very controversial for over 150 years. Chordates generally possess a segmented pharynx, but even though anatomical evidence and gene expression analyses suggest homologies between the pharyngeal apparatus of invertebrate chordates, such as the cephalochordate amphioxus, and vertebrates, these homologies remain contested. We, therefore, decided to study the evolution of the chordate head by examining the molecular mechanisms underlying pharyngeal morphogenesis in amphioxus, an animal lacking definitive neural crest.

resultsFocusing on the role of retinoic acid (RA) in post-gastrulation pharyngeal morphogenesis, we found that during gastrulation, RA signaling in the endoderm is required for defining pharyngeal and non-pharyngeal domains and that this process involves active degradation of RA anteriorly in the embryo. Subsequent extension of the pharyngeal territory depends on the creation of a low RA environment and is coupled to body elongation. RA further functions in pharyngeal segmentation in a regulatory network involving the mutual inhibition of RA- and Tbx1/10-dependent signaling.

conclusionsThese results indicate that the involvement of RA signaling and its interactions with Tbx1/10 in head segmentation preceded the evolution of neural crest and were thus likely present in the ancestral chordate. Furthermore, developmental comparisons between different deuterostome models suggest that the genetic mechanisms for pharyngeal segmentation are evolutionary ancient and very likely predate the origin of chordates.

Indexed as

CephalochordateCyp26 functionevolution of developmental mechanismsevolution of the vertebrate headfunctional knockdownpharmacological treatmentspharyngeal patterningretinoic acid signalingTbx1/10

Identifiers

PMID25664163
PMCPMC4320481
OpenAlexW2132922872

What OpenQuestion holds

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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.