Evidence map›Paper›PMID 31702864›Full record

ArticleGlia2020

Epigenetic regulation of microglial phosphatidylinositol 3-kinase pathway involved in long-term potentiation and synaptic plasticity in rats.

Genevieve Saw, Kumar Krishna, Neelima Gupta, Tuck Wah Soong, Karthik Mallilankaraman, Sreedharan Sajikumar, S Thameem Dheen

Open access · hybridAbstract read
In one paragraph

Article in Glia, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

53 citing papers in PubMed, 85 citations in OpenAlex.

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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 1 institution in 1 country.

Genevieve SawDepartment of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Kumar KrishnaDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Neelima GuptaDepartment of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Tuck Wah SoongDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-0876-0325
Karthik MallilankaramanDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Sreedharan SajikumarDepartment of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-5761-8982
S Thameem DheenDepartment of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0001-9600-6789
National University of Singapore · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microglia are the main form of immune defense in the central nervous system. Microglia express phosphatidylinositol 3-kinase (PI3K), which has been shown to play a significant role in synaptic plasticity in neurons and inflammation via microglia. This study shows that microglial PI3K is regulated epigenetically through histone modifications and posttranslationally through sumoylation and is involved in long-term potentiation (LTP) by modulating the expression of brain-derived neurotrophic factor (BDNF), which has been shown to be involved in neuronal synaptic plasticity. Sodium butyrate, a histone deacetylase inhibitor, upregulates PI3K expression, the phosphorylation of its downstream effectors, AKT and cAMP response element-binding protein (CREB), and the expression of BDNF in microglia, suggesting that BDNF secretion is regulated in microglia via epigenetic regulation of PI3K. Further, knockdown of SUMO1 in BV2 microglia results in a decrease in the expression of PI3K, the phosphorylation of AKT and CREB, as well as the expression of BDNF. These results suggest that microglial PI3K is epigenetically regulated by histone modifications and posttranslationally modified by sumoylation, leading to altered expression of BDNF. Whole-cell voltage-clamp showed the involvement of microglia in neuronal LTP, as selective ablation or disruption of microglia with clodronate in rat hippocampal slices abolished LTP. However, LTP was rescued when the same hippocampal slices were treated with active PI3K or BDNF, indicating that microglial PI3K/AKT signaling contributes to LTP and synaptic plasticity. Understanding the mechanisms by which microglial PI3K influences synapses provides insights into the ways it can modulate synaptic transmission and plasticity in learning and memory.

Indexed as

AnimalsEpigenesis, GeneticHippocampusLong-Term PotentiationMemoryMicrogliaNeuronal PlasticityNeuronsPhosphatidylinositol 3-KinasesRatsSignal TransductionSynapsesPhosphatidylinositol 3-Kinaseshistone deacetylaselong-term potentiationmicrogliasumoylationsynaptic plasticity

Identifiers

PMID31702864
PMCPMC7003906
OpenAlexW2984798457

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.