Evidence map›Paper›PMID 19439658›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Synaptic activation modifies microtubules underlying transport of postsynaptic cargo.

Christoph Maas, Dorthe Belgardt, Han Kyu Lee, Frank F Heisler, Corinna Lappe-Siefke, Maria M Magiera, Juliette van Dijk, Torben J Hausrat, Carsten Janke, Matthias Kneussel

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing 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

68 citing papers in PubMed.

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8 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

10 authors.

Christoph MaasZentrum für Molekulare Neurobiologie Hamburg, Universität Hamburg, Hamburg, Germany.
Dorthe Belgardt
Han Kyu Lee
Frank F Heisler
Corinna Lappe-Siefke
Maria M Magiera
Juliette van Dijk
Torben J Hausrat
Carsten Janke
Matthias Kneussel

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Synaptic plasticity, the ability of synapses to change in strength, requires alterations in synaptic molecule compositions over time, and synapses undergo selective modifications on stimulation. Molecular motors operate in sorting/transport of neuronal proteins; however, the targeting mechanisms that guide and direct cargo delivery remain elusive. We addressed the impact of synaptic transmission on the regulation of intracellular microtubule (MT)-based transport. We show that increased neuronal activity, as induced through GlyR activity blockade, facilitates tubulin polyglutamylation, a posttranslational modification thought to represent a molecular traffic sign for transport. Also, GlyR activity blockade alters the binding of the MT-associated protein MAP2 to MTs. By using the kinesin (KIF5) and the postsynaptic protein gephyrin as models, we show that such changes of MT tracks are accompanied by reduced motor protein mobility and cargo delivery into neurites. Notably, the observed neurite targeting deficits are prevented on functional depletion or gene expression knockdown of neuronal polyglutamylase. Our data suggest a previously undescribed concept of synaptic transmission regulating MT-dependent cargo delivery.

Indexed as

Biological TransportCarrier ProteinsCells, CulturedKinesinsMembrane ProteinsMicrotubulesPolyglutamic AcidSynapsesTubulinCarrier ProteinsgephyrinKinesinsMembrane ProteinsPolyglutamic AcidTubulin

Identifiers

PMID19439658
PMCPMC2681317

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.