Evidence map›Paper›PMID 23535650›Full record

ArticleNature communications2013

Impaired endolysosomal function disrupts Notch signalling in optic nerve astrocytes.

Mallika Valapala, Stacey Hose, Celine Gongora, Lijin Dong, Eric F Wawrousek, J Samuel Zigler, Debasish Sinha

Open access · bronzeAbstract read
In one paragraph

Article in Nature communications, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

36 citing papers in PubMed, 60 citations in OpenAlex.

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  12. Role of glia in optic nerve.Progress in retinal and eye research · 2021
    Review
  13. Article
  14. Involvement of Anoikis in Dissociated Optic Nerve Fiber Layer Appearance.International journal of molecular sciences · 2021
    Review
  15. Article
  16. Article
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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

7 authors at 4 institutions in 2 countries.

Mallika ValapalaThe Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.
Stacey Hose
Celine Gongora
Lijin Dong
Eric F Wawrousek
J Samuel Zigler
Debasish Sinha
Johns Hopkins Medicine · USNational Eye Institute · USInserm · FRJohns Hopkins University · US

Funding

NEI Genetic Engineering CoreZICEY000458 · NEI · NATIONAL EYE INSTITUTE · PI DONG, LIJIN · 2009 to 2025
$22.6M
Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Jiang Qian · 1985 to 2026
$22.1M
A novel bA3/A1-crystallin gene mutation results in persistent fetal vasculatureR01EY019037 · NEI · JOHNS HOPKINS UNIVERSITY · PI SINHA, DEBASISH · 2008 to 2015
$4.1M
A CRYSTALLIN MUTATION WITH ABNORMAL ASTROCYTES AND RETINAL VESSELSR01EY018636 · NEI · JOHNS HOPKINS UNIVERSITY · PI SINHA, DEBASISH · 2009 to 2010
$820k
NEI NIH HHS EY01765NEI NIH HHS EY018636NEI NIH HHS EY019037NEI NIH HHS P30 EY001765NEI NIH HHS R01 EY018636NEI NIH HHS R01 EY019037
6 · The paper itself

Abstract

Astrocytes migrate from the optic nerve into the inner retina, forming a template upon which retinal vessels develop. In the Nuc1 rat, mutation in the gene encoding βA3/A1-crystallin disrupts both Notch signalling in astrocytes and formation of the astrocyte template. Here we show that loss of βA3/A1-crystallin in astrocytes does not impede Notch ligand binding or extracellular cleavages. However, it affects vacuolar-type proton ATPase (V-ATPase) activity, thereby compromising acidification of the endolysosomal compartments, leading to reduced γ-secretase-mediated processing and release of the Notch intracellular domain (NICD). Lysosomal-mediated degradation of Notch is also impaired. These defects decrease the level of NICD in the nucleus, inhibiting the expression of Notch target genes. Overexpression of βA3/A1-crystallin in those same astrocytes restored V-ATPase activity and normal endolysosomal acidification, thereby increasing the levels of γ-secretase to facilitate optimal Notch signalling. We postulate that βA3/A1-crystallin is essential for normal endolysosomal acidification, and thereby, normal activation of Notch signalling in astrocytes.

Indexed as

Signal TransductionAnimalsAstrocytesCalcium-Binding ProteinsCrystallinsEndosomesIntercellular Signaling Peptides and ProteinsLysosomesMembrane ProteinsMiceOptic NerveReceptor, Notch1Serrate-Jagged ProteinsCalcium-Binding ProteinsCrystallinsIntercellular Signaling Peptides and ProteinsMembrane ProteinsNotch1 protein, mouseReceptor, Notch1Serrate-Jagged Proteins

Identifiers

PMID23535650
PMCPMC3718029
OpenAlexW2032925076

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.