Evidence map›Paper›PMID 25429077›Full record

ArticleScience signaling2014

Differential splicing and glycosylation of Apoer2 alters synaptic plasticity and fear learning.

Catherine R Wasser, Irene Masiulis, Murat S Durakoglugil, Courtney Lane-Donovan, Xunde Xian, Uwe Beffert, Anandita Agarwala, Robert E Hammer, Joachim Herz

Abstract read
In one paragraph

Article in Science signaling, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing 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

32 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. [Tau Protein Induces Aberrant Alternative Splicing Changes in PS19 Transgenic Mice].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2023
    Article
  6. Article
  7. Article
  8. Review
  9. Human APOER2 Isoforms Have Differential Cleavage Events and Synaptic Properties.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. ApoER2: Functional Tuning Through Splicing.Frontiers in molecular neuroscience · 2020
    Review
  17. Article
  18. Article
  19. Article
  20. Article
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

9 authors at 1 institution in 1 country.

Catherine R WasserCenter for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. catherine.wasser@utsouthwestern.edu joachim.herz@utsouthwestern.edu.
Irene MasiulisDepartment of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Murat S DurakoglugilCenter for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Courtney Lane-DonovanCenter for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Xunde XianCenter for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Uwe BeffertDepartment of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Anandita AgarwalaDepartment of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Robert E HammerDepartment of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Joachim HerzCenter for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. catherine.wasser@utsouthwestern.edu joachim.herz@utsouthwestern.edu.
The University of Texas Southwestern Medical Center · US

Funding

Metabolism of the VLDL receptor and ApoE receptor 2R37HL063762 · NHLBI · UT SOUTHWESTERN MEDICAL CENTER · PI HERZ, JOACHIM J · 2010 to 2019
$4.0M
METABOLISM OF THE VLDL RECEPTOR AND APOE RECEPTOR 2R01HL063762 · NHLBI · UT SOUTHWESTERN MEDICAL CENTER · PI HERZ, JOACHIM J · 2000 to 2009
$3.1M
NHLBI NIH HHS R01 HL063762NHLBI NIH HHS R37 HL063762
6 · The paper itself

Abstract

Apoer2 is an essential receptor in the central nervous system that binds to the apolipoprotein ApoE. Various splice variants of Apoer2 are produced. We showed that Apoer2 lacking exon 16, which encodes the O-linked sugar (OLS) domain, altered the proteolytic processing and abundance of Apoer2 in cells and synapse number and function in mice. In cultured cells expressing this splice variant, extracellular cleavage of OLS-deficient Apoer2 was reduced, consequently preventing γ-secretase-dependent release of the intracellular domain of Apoer2. Mice expressing Apoer2 lacking the OLS domain had increased Apoer2 abundance in the brain, hippocampal spine density, and glutamate receptor abundance, but decreased synaptic efficacy. Mice expressing a form of Apoer2 lacking the OLS domain and containing an alternatively spliced cytoplasmic tail region that promotes glutamate receptor signaling showed enhanced hippocampal long-term potentiation (LTP), a phenomenon associated with learning and memory. However, these mice did not display enhanced spatial learning in the Morris water maze, and cued fear conditioning was reduced. Reducing the expression of the mutant Apoer2 allele so that the abundance of the protein was similar to that of Apoer2 in wild-type mice normalized spine density, hippocampal LTP, and cued fear learning. These findings demonstrated a role for ApoE receptors as regulators of synaptic glutamate receptor activity and established differential receptor glycosylation as a potential regulator of synaptic function and memory.

Indexed as

Alternative SplicingProtein Processing, Post-TranslationalAmyloid Precursor Protein SecretasesAnimalsAvoidance LearningCA1 Region, HippocampalConditioning, ClassicalCuesDendritesExonsFearFemaleGlycosylationLDL-Receptor Related ProteinsLong-Term PotentiationMaleAmyloid Precursor Protein SecretasesLDL-Receptor Related Proteinslow density lipoprotein receptor-related protein 8Nerve Tissue Proteins

Identifiers

PMID25429077
PMCPMC4355955
OpenAlexW2157735201

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.