Evidence map›Paper›PMID 21610027›Full record

ArticleDevelopment (Cambridge, England)2011

Topoisomerase IIbeta is required for lamina-specific targeting of retinal ganglion cell axons and dendrites.

Linda M Nevin, Tong Xiao, Wendy Staub, Herwig Baier

Abstract read
In one paragraph

Article in Development (Cambridge, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

21 citing papers in PubMed, 38 citations in OpenAlex.

  1. The Roles of Topoisomerases in Transcriptional Regulation.International journal of molecular sciences · 2026
    Review
  2. Article
  3. Article
  4. To Break or Not to Break: The Role of TOP2B in Transcription.International journal of molecular sciences · 2023
    Review
  5. Article
  6. Article
  7. Article
  8. TOP2B Enzymatic Activity on Promoters and Introns Modulates Multiple Oncogenes in Human Gliomas.Clinical cancer research : an official journal of the American Association for Cancer Research · 2021
    Article
  9. Review
  10. TOP2B: The First Thirty Years.International journal of molecular sciences · 2018
    Review
  11. The Roles of DNA Topoisomerase IIβ in Transcription.International journal of molecular sciences · 2018
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  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

4 authors at 1 institution in 1 country.

Linda M NevinDepartment of Physiology, University of California, San Francisco, 1550 4th Street, San Francisco, CA 94158-2722, USA.
Tong Xiao
Wendy Staub
Herwig Baier
University of California, San Francisco · US

Funding

LARGE SCALE GENETIC APPROACH TO ZEBRAFISH VISUAL SYSTEMR01EY012406 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BAIER, HERWIG · 1999 to 2008
$2.7M
Genetic approach to the assembly of parallel circuits in the visual systemR01EY013855 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BAIER, HERWIG · 2003 to 2010
$2.6M
NEI NIH HHS EY12406NEI NIH HHS EY13855NEI NIH HHS R01 EY012406NEI NIH HHS R01 EY013855
6 · The paper itself

Abstract

The specific partnering of synaptically connected neurons is central to nervous system function. Proper wiring requires the interchange of signals between a postmitotic neuron and its environment, a distinct pattern of transcription in the nucleus, and deployment of guidance and adhesion cues to the cell surface. To identify genes involved in neurite targeting by retinal ganglion cells (GCs), their presynaptic partners in the retina, and their postsynaptic targets in the optic tectum, we undertook a forward genetic screen for mutations disrupting visual responses in zebrafish. This rapid primary screen was subsequently refined by immunohistochemical labeling of retinal and tectal neurites to detect patterning errors. From this unbiased screen, the notorious (noto) mutant exhibited the most specific phenotypes: intact retinal and tectal differentiation but multiple neurite targeting defects in the retinal inner plexiform layer (IPL) and tectal neuropil. Positional cloning and morpholino phenocopy revealed that the mutation disrupts Topoisomerase IIβ (Top2b), a broadly distributed nuclear protein involved in chromatin modifications during postmitotic differentiation. Top2b-DNA interactions are known to regulate transcription of developmentally important genes, including axon guidance factors and cell adhesion molecules, but a specific role in local synaptic targeting has not been previously described. The neurite targeting defects among GC axons are largely restricted to crossovers between sublaminae of a specific layer, SFGS, and were shown by mosaic analysis to be autonomous to the GC axons. The noto mutant provides the first example of the importance of an epigenetic regulator, Top2b, in the intricate series of events that lead to a properly wired visual system.

Indexed as

AnimalsAxonsDendritesDNA-Binding ProteinsDNA Topoisomerases, Type IIEpigenomicsRetinal Ganglion CellsVision, OcularVisual PathwaysZebrafishDNA-Binding ProteinsDNA Topoisomerases, Type II

Identifiers

PMID21610027
PMCPMC3100707
OpenAlexW2006582186

What OpenQuestion holds

Textmetadata
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.