Evidence map›Paper›PMID 30308165›Full record

ArticleNeuron2018

CD47 Protects Synapses from Excess Microglia-Mediated Pruning during Development.

Emily K Lehrman, Daniel K Wilton, Elizabeth Y Litvina, Christina A Welsh, Stephen T Chang, Arnaud Frouin, Alec J Walker, Molly D Heller, Hisashi Umemori, Chinfei Chen and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuron, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 306 papers.

0numbers the graph read from it
0cells of the map it votes in
306citing papers in PubMed
17.9field-weighted citation impact, top 1% 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

306 citing papers in PubMed, 453 citations in OpenAlex.

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  18. Control of microglial dynamics by the Arp2/3 complex and the autism- and schizophrenia-associated protein CYFIP1.Proceedings of the National Academy of Sciences of the United States of America · 2026
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246 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 1 country.

Emily K LehrmanDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Daniel K WiltonDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Elizabeth Y LitvinaDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Christina A WelshDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Stephen T ChangDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Arnaud FrouinDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Alec J WalkerDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Molly D HellerDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Hisashi UmemoriDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Chinfei ChenDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Beth StevensDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Stanley Center, Broad Institute, Cambridge, MA 02142, USA. Electronic address: beth.stevens@childrens.harvard.edu.
Boston Children's Hospital · USBroad Institute · US

Funding

SYNAPTIC MECHANISMS IN HIPPOCAMPAL EPILEPTOGENESISP30HD018655 · NICHD · CHILDREN'S HOSPITAL BOSTON · PI WOOLF, CLIFFORD J · 1985 to 2015
$26.2M
Short-term plasticity of the retinogeniculate synapseR01EY013613 · NEI · CHILDREN'S HOSPITAL BOSTON · PI Chinfei Chen · 2003 to 2026
$10.3M
How do neurons in the brain decide to refine their synaptic connections in vivo?R01MH111647 · NIMH · BOSTON CHILDREN'S HOSPITAL · PI Chinfei Chen, Hisashi Umemori · 2017 to 2026
$6.8M
Mouse Neurodevelopmental Behavior CoreU54HD090255 · NICHD · BOSTON CHILDREN'S HOSPITAL · PI KUNKEL, LOUIS M · 2016 to 2020
$5.2M
Investigating CD47-SIRPa as novel protective signals during CNS synaptic pruningR01NS092578 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI STEVENS, BETH ANN, UMEMORI, HISASHI · 2015 to 2019
$2.9M
Investigating the Role of Glia in Activity-Dependent Synapse EliminationR01NS071008 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI STEVENS, BETH ANN · 2011 to 2017
$2.3M
NEI NIH HHS R01 EY013613NICHD NIH HHS P30 HD018655NICHD NIH HHS U54 HD090255NIMH NIH HHS R01 MH111647NINDS NIH HHS R01 NS071008NINDS NIH HHS R01 NS092578
6 · The paper itself

Abstract

Microglia regulate synaptic circuit remodeling and phagocytose synaptic material in the healthy brain; however, the mechanisms directing microglia to engulf specific synapses and avoid others remain unknown. Here, we demonstrate that an innate immune signaling pathway protects synapses from inappropriate removal. The expression patterns of CD47 and its receptor, SIRPα, correlated with peak pruning in the developing retinogeniculate system, and mice lacking these proteins exhibited increased microglial engulfment of retinogeniculate inputs and reduced synapse numbers in the dorsal lateral geniculate nucleus. CD47-deficient mice also displayed increased functional pruning, as measured by electrophysiology. In addition, CD47 was found to be required for neuronal activity-mediated changes in engulfment, as microglia in CD47 knockout mice failed to display preferential engulfment of less active inputs. Taken together, these results demonstrate that CD47-SIRPα signaling prevents excess microglial phagocytosis and show that molecular brakes can be regulated by activity to protect specific inputs.

Indexed as

AnimalsCD47 AntigenFemaleMaleMiceMice, Inbred C57BLMice, KnockoutMicrogliaNeurogenesisNeuronal PlasticityPhagocytosisReceptors, ImmunologicSynapsesCD47 AntigenCd47 protein, mouseReceptors, ImmunologicSirpa protein, mouseactivityCD47don’t eat memicrogliaphagocytosisprotective signalpruningrefinementretinogeniculate systemSIRPα

Identifiers

PMID30308165
PMCPMC6314207
OpenAlexW2896935109

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.