Evidence map›Paper›PMID 21500363›Full record

ArticleDevelopmental neurobiology2011

Heparan sulfate proteoglycan specificity during axon pathway formation in the Drosophila embryo.

Ashley D Smart, Meredith M Course, Joel Rawson, Scott Selleck, David Van Vactor, Karl G Johnson

Open access · greenAbstract read
In one paragraph

Article in Developmental neurobiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.3field-weighted citation impact, top 25% 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

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
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  6. Glycosylation in Axonal Guidance.International journal of molecular sciences · 2021
    Review
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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 3 institutions in 1 country.

Ashley D SmartDepartment of Biology and Program in Neuroscience, Pomona College, Claremont, California 91711, USA.
Meredith M Course
Joel Rawson
Scott Selleck
David Van Vactor
Karl G Johnson
Pomona College · USUniversity of Minnesota · USHarvard University · US

Funding

GENES ESSENTIAL TO MOTOR AXON GUIDANCE IN DROSOPHILIAR01NS035909 · NINDS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI VAN VACTOR, DAVID L. · 1997 to 2009
$3.9M
PROTEOGLYCANS IN GROWTH FACTOR SIGNALING AND DEVELOPMENTR01GM054832 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI SELLECK, SCOTT B · 1997 to 2010
$2.4M
Characterizing the function of Syndecan during CNS developmentR15NS065433 · NINDS · POMONA COLLEGE · PI JOHNSON, KARL GREGORY · 2009 to 2009
$51k
NIGMS NIH HHS GM054832NIGMS NIH HHS R01 GM054832NINDS NIH HHS 1R15NS065433-01NINDS NIH HHS NS35909NINDS NIH HHS R01 NS035909NINDS NIH HHS R15 NS065433
6 · The paper itself

Abstract

Axon guidance is influenced by the presence of heparan sulfate (HS) proteoglycans (HSPGs) on the surface of axons and growth cones (Hu, [2001]: Nat Neurosci 4:695-701; Irie et al. [2002]: Development 129:61-70; Inatani et al. [2003]: Science 302:1044-1046; Johnson et al. [2004]: Curr Biol 14:499-504; Steigemann et al. [2004]: Curr Biol 14:225-230). Multiple HSPGs, including Syndecans, Glypicans and Perlecans, carry the same carbohydrate polymer backbones, raising the question of how these molecules display functional specificity during nervous system development. Here we use the Drosophila central nervous system (CNS) as a model to compare the impact of eliminating Syndecan (Sdc) and/or the Glypican Dally-like (Dlp). We show that Dlp and Sdc share a role in promoting accurate patterns of axon fasciculation in the lateral longitudinal neuropil; however, unlike mutations in sdc, which disrupt the ability of the secreted repellent Slit to prevent inappropriate passage of axons across the midline, mutations in dlp show neither midline defects nor genetic interactions with Slit and its Roundabout (Robo) receptors at the midline. Dlp mutants do show genetic interactions with Slit and Robo in lateral fascicle formation. In addition, simultaneous loss of Dlp and Sdc demonstrates an important role for Dlp in midline repulsion, reminiscent of the functional overlap between Robo receptors. A comparison of HSPG distribution reveals a pattern that leaves midline proximal axons with relatively little Dlp. Finally, the loss of Dlp alters Slit distribution distal but not proximal to the midline, suggesting that distinct yet overlapping pattern of HSPG expression provides a spatial system that regulates axon guidance decisions.

Indexed as

AnimalsAxonsCentral Nervous SystemDrosophila melanogasterDrosophila ProteinsImmunohistochemistryMicroscopy, ConfocalNerve Tissue ProteinsNeural PathwaysNeurogenesisProteoglycansReceptors, ImmunologicRoundabout ProteinsSubstrate SpecificitySyndecansdlp protein, DrosophilaDrosophila ProteinsNerve Tissue ProteinsProteoglycansReceptors, ImmunologicRoundabout Proteinssli protein, DrosophilaSyndecans

Identifiers

PMID21500363
PMCPMC3115403
OpenAlexW1986720812

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.