Evidence map›Paper›PMID 23583583›Full record

ReviewDevelopmental biology2013

A unified model for left-right asymmetry? Comparison and synthesis of molecular models of embryonic laterality.

Laura N Vandenberg, Michael Levin

Open access · greenAbstract readComparative StudyReview
In one paragraph

Review in Developmental biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
10.5field-weighted citation impact, top 1% 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

71 citing papers in PubMed, 164 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Bilateral cellular flows display asymmetry prior to left-right organizer formation in amniote gastrulation.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Left-right symmetry breaking: learning from the chicken.Frontiers in cell and developmental biology · 2025
    Review
  6. Article
  7. Review
  8. Development & reproduction · 2024
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Mechanical regulation of early vertebrate embryogenesis.Nature reviews. Molecular cell biology · 2022
    Review
  15. Article
  16. Article
  17. Article
  18. Genes · 2021
    Article
  19. Getting to the Heart of Left-Right Asymmetry: Contributions from the Zebrafish Model.Journal of cardiovascular development and disease · 2021
    Review
  20. Mirrored brain organization: Statistical anomaly or reversal of hemispheric functional segregation bias?Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article

11 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Laura N VandenbergCenter for Regenerative and Developmental Biology, and Biology Department, Tufts University, Medford, MA 02155, USA.
Michael Levin
Tufts University · US

Funding

The Role of Ductin in Embryonic MorphogenesisR01GM067227 · NIGMS · FORSYTH INSTITUTE · PI LEVIN, MICHAEL · 2003 to 2007
$1.7M
Bioelectrical Controls of MorphogenesisR01GM077425 · NIGMS · TUFTS UNIVERSITY MEDFORD · PI LEVIN, MICHAEL · 2007 to 2010
$1.1M
Bioelectrical controls of left-right asymmetryF32GM087107 · NIGMS · TUFTS UNIVERSITY MEDFORD · PI VANDENBERG, LAURA N. · 2009 to 2010
$98k
NIGMS NIH HHS 1F32GM087107NIGMS NIH HHS F32 GM087107NIGMS NIH HHS R01 GM067227NIGMS NIH HHS R01 GM077425NIGMS NIH HHS R01-GM077425
6 · The paper itself

Abstract

Understanding how and when the left-right (LR) axis is first established is a fundamental question in developmental biology. A popular model is that the LR axis is established relatively late in embryogenesis, due to the movement of motile cilia and the resultant directed fluid flow during late gastrulation/early neurulation. Yet, a large body of evidence suggests that biophysical, molecular, and bioelectrical asymmetries exist much earlier in development, some as early as the first cell cleavage after fertilization. Alternative models of LR asymmetry have been proposed that accommodate these data, postulating that asymmetry is established due to a chiral cytoskeleton and/or the asymmetric segregation of chromatids. There are some similarities, and many differences, in how these various models postulate the origin and timing of symmetry breaking and amplification, and these events' linkage to the well-conserved subsequent asymmetric transcriptional cascades. This review examines experimental data that lend strong support to an early origin of LR asymmetry, yet are also consistent with later roles for cilia in the amplification of LR pathways. In this way, we propose that the various models of asymmetry can be unified: early events are needed to initiate LR asymmetry, and later events could be utilized by some species to maintain LR-biases. We also present an alternative hypothesis, which proposes that individual embryos stochastically choose one of several possible pathways with which to establish their LR axis. These two hypotheses are both tractable in appropriate model species; testing them to resolve open questions in the field of LR patterning will reveal interesting new biology of wide relevance to developmental, cell, and evolutionary biology.

Indexed as

Body PatterningCell MovementGene Expression Regulation, DevelopmentalModels, BiologicalAnimalsCell PolarityChromatidsCiliaCytoplasmCytoskeletonEmbryonic DevelopmentMiceModels, AnimalPenetrance

Identifiers

PMID23583583
PMCPMC3698617
OpenAlexW2066661906

What OpenQuestion holds

Textmetadata
LicenceTDM
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.