Evidence map›Paper›PMID 30145931›Full record

ArticleAutophagy2018

Pathological missorting of endogenous MAPT/Tau in neurons caused by failure of protein degradation systems.

Varun Balaji, Senthilvelrajan Kaniyappan, Eckhard Mandelkow, Yipeng Wang, Eva-Maria Mandelkow

Open access · bronzeAbstract read
In one paragraph

Article in Autophagy, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

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  19. Tau Ubiquitination in Alzheimer's Disease.Frontiers in neurology · 2021
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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

5 authors at 2 institutions in 1 country.

Varun Balajia DZNE, German Center for Neurodeg. Diseases , Bonn , Germany.
Senthilvelrajan Kaniyappana DZNE, German Center for Neurodeg. Diseases , Bonn , Germany.
Eckhard Mandelkowa DZNE, German Center for Neurodeg. Diseases , Bonn , Germany.ORCID 0000-0003-4655-4829
Yipeng Wanga DZNE, German Center for Neurodeg. Diseases , Bonn , Germany.
Eva-Maria Mandelkowa DZNE, German Center for Neurodeg. Diseases , Bonn , Germany.ORCID 0000-0003-4655-4829
Center of Advanced European Studies and Research · DEGerman Center for Neurodegenerative Diseases · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Missorting of MAPT/Tau represents one of the early signs of neurodegeneration in Alzheimer disease. The triggers for this are still a matter of debate. Here we investigated the sorting mechanisms of endogenous MAPT in mature primary neurons using microfluidic chambers (MFCs) where cell compartments can be observed separately. Blocking protein degradation pathways with proteasomal or autophagy inhibitors dramatically increased the missorting of MAPT in dendrites on the neuritic side, suggesting that degradation of MAPT in dendrites is a major determinant for the physiological axonal distribution of MAPT. Such missorted dendritic MAPT differed in its phosphorylation pattern from axonal MAPT. By contrast, enhancing autophagy or proteasomal pathways strongly reduced MAPT missorting, thereby confirming the role of protein degradation pathways in the polar distribution of MAPT. Dendritic missorting of MAPT by blocking protein degradation resulted in the loss of spines but not in overall cell toxicity. Inhibition of local protein synthesis in dendrites eliminated the missorting of MAPT, indicating that the accumulation of dendritic MAPT is locally generated. In support of this, a substantial fraction of Mapt/Tau mRNA was detected in dendrites. Taken together, our results indicate that the autophagy and proteasomal pathways play important roles in fine-tuning dendritic MAPT levels and thereby prevent synaptic toxicity caused by MAPT accumulation. Abbreviations Ani: anisomycin; Baf: bafilomycin A

Indexed as

ProteolysisAlzheimer DiseaseAnimalsAutophagyCells, CulturedEmbryo, MammalianMiceMice, KnockoutNeuritesNeuronsProtein TransportRatsRats, Sprague-DawleySynapsestau ProteinsMapt protein, mouseMapt protein, rattau ProteinsAlzheimer diseaseautophagydegradationMAPT/Taumicrofluidic chambersproteasome

Identifiers

PMID30145931
PMCPMC6984766
OpenAlexW2888796560

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.