Evidence map›Paper›PMID 20071673›Full record

ArticleInvestigative ophthalmology & visual science2010

The zebrafish galectin Drgal1-l2 is expressed by proliferating Müller glia and photoreceptor progenitors and regulates the regeneration of rod photoreceptors.

Sonya E L Craig, Ryan Thummel, Hafiz Ahmed, Gerardo R Vasta, David R Hyde, Peter F Hitchcock

Abstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
–field-weighted citation impact
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

45 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. A "proto" type galectin expressed in striped bass (Frontiers in cellular and infection microbiology · 2025
    Article
  6. Article
  7. leptin b and its regeneration enhancer illustrate the regenerative features of zebrafish hearts.Developmental dynamics : an official publication of the American Association of Anatomists · 2024
    Article
  8. An Overview towards Zebrafish Larvae as a Model for Ocular Diseases.International journal of molecular sciences · 2023
    Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Human red and green cone opsins areThe Journal of biological chemistry · 2019
    Article
  15. Review
  16. Nanoparticle-mediated siRNA Gene-silencing in Adult Zebrafish Heart.Journal of visualized experiments : JoVE · 2018
    Article
  17. Article
  18. Article
  19. Review
  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.

Sonya E L CraigDepartment of Ophthalmology and Visual Sciences, University of Michigan School of Medicine, Ann Arbor, Michigan 48105, USA.
Ryan Thummel
Hafiz Ahmed
Gerardo R Vasta
David R Hyde
Peter F Hitchcock

Funding

RETINAL DEVELOPMENT--DENDRITIC GROWTH SYNAPSER01EY007060 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI HITCHCOCK, PETER F · 1987 to 2021
$7.0M
Vision Research Training Program - T32EY013934T32EY013934 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Patrice Elie Fort · 2002 to 2026
$4.2M
Biological Roles of GalectinsR01GM070589 · NIGMS · UNIVERSITY OF MD BIOTECHNOLOGY INSTITUTE · PI VASTA, GERARDO RAUL · 2004 to 2013
$2.0M
Genetic Hierarchy Underlying Photoreceptor RegenerationR01EY018417 · NEI · UNIVERSITY OF NOTRE DAME · PI HYDE, DAVID R, THUMMEL, RYAN · 2009 to 2012
$1.3M
Role of Pax6 in photoreceptor cell regeneration using conditional knockdownsR21EY018919 · NEI · UNIVERSITY OF NOTRE DAME · PI HYDE, DAVID R · 2008 to 2009
$450k
NEI NIH HHS R01 EY007060NEI NIH HHS R01-EY007060NEI NIH HHS R01 EY018417NEI NIH HHS R01-EY018417NEI NIH HHS R21 EY018919NEI NIH HHS R21-EY018919NEI NIH HHS T32 EY013934NEI NIH HHS T32-EY13934NIGMS NIH HHS R01 GM070589NIGMS NIH HHS R01-GM070589
6 · The paper itself

Abstract

purposeThe purpose of this study was to identify secreted proteins in the retina of the adult zebrafish that are induced by the selective death of photoreceptors and to test experimentally the function of these proteins during the regeneration of photoreceptors.

methodsInduced selective death of photoreceptors in the retina of the adult zebrafish was combined with in situ hybridization and immunocytochemistry to identify the induced cellular expression of the secreted beta-galactoside binding protein Galectin 1-like 2 (Drgal1-L2). Electroporation of morpholino oligonucleotides was used to knock down protein synthesis, and regenerated photoreceptors were counted in control and experimental retinas after labeling with cell type-specific RNA probes.

resultsExpression analysis and immunocytochemistry showed that Drgal1-L2 is induced de novo by photoreceptor death and is synthesized by microglia and proliferating Müller glia and their mitotic progeny. Knockdown of Drgal1-L2 expression in Müller glia results in reduced regeneration of rod photoreceptors without affecting injury-induced proliferation or the regeneration of cone photoreceptors.

conclusionsBased on these data, the authors conclude that Drgal1-L2 is induced by photoreceptor cell death and secreted by stem cells and neuronal progenitors and that it regulates the regeneration of rod photoreceptors. Drgal1-L2 is the first secreted factor shown to regulate aspects of regenerative neurogenesis in the teleost retina.

Indexed as

AnimalsCell CountCell DeathCell ProliferationElectroporationGalectinsImmunoblottingIn Situ HybridizationLightMicrogliaMorpholinesPhotoreceptor Cells, VertebrateRadiation Injuries, ExperimentalRegenerationRetinal Rod Photoreceptor CellsReverse Transcriptase Polymerase Chain ReactionGal1-L2 protein, zebrafishGalectinsMorpholinesRNA, MessengerZebrafish Proteins

Identifiers

PMID20071673
PMCPMC2891476

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.