Evidence map›Paper›PMID 31549961›Full record

ArticleeLife2019

A mechanism in agrin signaling revealed by a prevalent Rapsyn mutation in congenital myasthenic syndrome.

Guanglin Xing, Hongyang Jing, Lei Zhang, Yu Cao, Lei Li, Kai Zhao, Zhaoqi Dong, Wenbing Chen, Hongsheng Wang, Rangjuan Cao and 2 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2019. 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
2.3field-weighted citation impact, top 12% 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, 34 citations in OpenAlex.

  1. Review
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  6. Neddylation E1 Obligatory Subunit Nae1 Is Critical to Neuromuscular Junction Development and Maintenance.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  17. A Role of Lamin A/C in Preventing Neuromuscular Junction Decline in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
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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

12 authors at 3 institutions in 1 country.

Guanglin Xing *Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.ORCID 0000-0002-8258-0293
Hongyang Jing *Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.ORCID 0000-0003-2811-1266
Lei ZhangDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Yu CaoDepartment of Neuroscience and Regenerative Medicine, Augusta University, Augusta, United States.ORCID 0000-0003-3708-575X
Lei LiDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Kai ZhaoDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Zhaoqi DongDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Wenbing ChenDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Hongsheng WangDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Rangjuan CaoDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Wen-Cheng XiongDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.
Lin MeiDepartment of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, United States.ORCID 0000-0001-5772-1229
Case Western Reserve University · USAugusta University · USLouis Stokes Cleveland VA Medical Center · US

Funding

Mechanisms of neuromuscular junction formationR01NS082007 · NINDS · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG · 2013 to 2022
$5.2M
Characterization of Agrin/LRP4 Antibody-Positive Myasthenia GravisR01NS090083 · NINDS · CASE WESTERN RESERVE UNIVERSITY · PI MEI, LIN · 2015 to 2019
$2.9M
Swedish APP mutation and NMJ decline in Alzheimer's diseaseRF1AG051510 · NIA · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG, ZIGMOND, RICHARD E · 2020 to 2020
$2.6M
Swedish APP mutation and NMJ decline in Alzheimer's diseaseR01AG051510 · NIA · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG, ZIGMOND, RICHARD E · 2015 to 2024
$2.6M
Retromer deficiency and Alzheimer's disease pathologyRF1AG045781 · NIA · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG · 2019 to 2019
$2.0M
Retromer deficiency and Alzheimer's disease pathologyR01AG045781 · NIA · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG · 2014 to 2017
$1.7M
Contributions of osteoblastic and muscular APPswe to the pathogenesis of Alzheimers diseaseR56AG060997 · NIA · CASE WESTERN RESERVE UNIVERSITY · PI XIONG, WEN-CHENG · 2018 to 2019
$800k
BLRD VA I01 BX001020NIA NIH HHS R01 AG045781NIA NIH HHS R01 AG051510NIA NIH HHS R56 AG060997NIA NIH HHS RF1 AG045781NIA NIH HHS RF1 AG051510NIH HHS AG051510NIH HHS AG060997NIH HHS AG45781NIH HHS NS082007NIH HHS NS090083NINDS NIH HHS R01 NS082007NINDS NIH HHS R01 NS090083
6 · The paper itself

Abstract

Neuromuscular junction is a synapse between motoneurons and skeletal muscles, where acetylcholine receptors (AChRs) are concentrated to control muscle contraction. Studies of this synapse have contributed to our understanding of synapse assembly and pathological mechanisms of neuromuscular disorders. Nevertheless, underlying mechanisms of NMJ formation was not well understood. To this end, we took a novel approach - studying mutant genes implicated in congenital myasthenic syndrome (CMS). We showed that knock-in mice carrying N88K, a prevalent CMS mutation of Rapsyn (Rapsn), died soon after birth with profound NMJ deficits. Rapsn is an adapter protein that bridges AChRs to the cytoskeleton and possesses E3 ligase activity. In investigating how N88K impairs the NMJ, we uncovered a novel signaling pathway by which Agrin-LRP4-MuSK induces tyrosine phosphorylation of Rapsn, which is required for its self-association and E3 ligase activity. Our results also provide insight into pathological mechanisms of CMS.

Indexed as

Mutation, MissenseSignal TransductionAgrinAnimalsDisease Models, AnimalGene Knock-In TechniquesMiceMuscle ProteinsMutant ProteinsMyasthenic Syndromes, CongenitalAgrinMuscle ProteinsMutant Proteinsperipheral membrane protein 43Kacetylcholine receptorcongenital myasthenic syndromemouseneuromuscular junctionneuroscienceRapsyn

Identifiers

PMID31549961
PMCPMC6779466
OpenAlexW2975755143

What OpenQuestion holds

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LicenceCC BY
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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.