Cited by 188Extracellular vesicles in diseaseNeuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology Research

TNFα and IL-1β modify the miRNA cargo of astrocyte shed extracellular vesicles to regulate neurotrophic signaling in neurons

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Chaudhuri, Amrita Datta, Dastgheyb, Raha M., Yoo, Seung-Wan, Trout, Amanda, Talbot Jr, C. Conover, Hao, Haiping, Witwer, Kenneth W., Haughey, Norman J.·2018·Cell Death & Disease

Abstract

Astrocytes are known to be critical regulators of neuronal function. However, relatively few mediators of astrocyte to neuron communication have been identified. Recent advancements in the biology of extracellular vesicles have begun to implicate astrocyte derived extracellular vesicles (ADEV) as mediators of astrocyte to neuron communication, suggesting that alterations in the release and/or composition of ADEVs could influence gliotransmission. TNFα and IL-1β are key mediators of glial activation and neuronal damage, but the effects of these cytokines on the release or molecular composition of ADEVs is unknown. We found that ADEVs released in response to IL-1β (ADEV-IL-1β) and TNFα (ADEV-TNFα) were enriched with miRNAs that target proteins involved in neurotrophin signaling. We confirmed that miR-125a-5p and miR-16-5p (both enriched in ADEV-IL-1β and ADEV-TNFα) targeted NTKR3 and its downstream effector Bcl2. Downregulation of these targets in neurons was associated with reductions in dendritic growth, dendritic complexity, reduced spike rates, and burst activity. Molecular interference of miR-125a-5p and miR-16-5p prevented ADEV-IL-1β from reducing dendritic complexity, spike, and burst rates. These findings suggest that astrocytes respond to inflammatory challenge by modifying the miRNA cargo of ADEVs to diminish the activity of target neurons by regulating the translational expression of proteins controlling programs essential for synaptic stability and neuronal excitability.

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Authors
Chaudhuri, A. D., Dastgheyb, R. M., Yoo, S.-W., Trout, A., Talbot Jr, C. C., Hao, H., Witwer, K. W., & Haughey, N. J.
Affiliations
Johns Hopkins University (US)
Corresponding author
Haughey, Norman J.
Venue
Cell Death & Disease
Published
2018-03-05
Volume
9
Issue
3
Pages
363-363
ISSN
2041-4889 (ISSN-L)
OpenAlex
W2789263143
Cited by
184
References
81
Citations by year
2026: 10 · 2025: 15 · 2024: 21 · 2023: 31 · 2022: 31 · 2021: 30 · 2020: 27 · 2019: 15 · 2018: 4
FWCI
7.12
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Institutes of Health (DA04039, MH075673)
  • National Institute on Aging (R01AG057420)
  • National Institute of Mental Health (P01MH105280, R25MH080661, R01MH110246, R01MH077542, P30MH075673)
  • National Institute on Drug Abuse (R01DA040385, R01DA040390)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
gliotransmission, astrocyte-neuron communication, TNF-α, IL-1β, microRNA cargo, miR-125a-5p, miR-16-5p, NTRK3, Bcl-2, neurotrophin signaling, dendritic complexity, neuronal excitability, synaptic stability, neuroinflammation, glial activation
MeSH terms
Extracellular Vesicles, Animals, Astrocytes, Base Sequence, Dendrites, Humans, Nerve Growth Factors, Nerve Net, Neurons, Tumor Necrosis Factor-alpha, Signal Transduction, Rats, Sprague-Dawley, Receptor, trkC, MicroRNAs, Interleukin-1beta, HEK293 Cells

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