Cited by 76Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsCytokine Signaling Pathways and Interactions

Role of the JAKs/STATs pathway in the intracellular calcium changes induced by interleukin-6 in hippocampal neurons

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Orellana, Daniel I., Quintanilla, Rodrigo A., Gonzalez-Billault, Christian, Maccioni, Ricardo B.·2005·Neurotoxicity Research

Abstract

Recent studies show that inflammation has an active role in the onset of neurodegenerative diseases. It is known that in response to extracellular insults microglia and/or astrocytes produce inflammatory agents. These contribute to the neuropathological events in the aging process and neuronal degeneration. Interleukin-6 (IL-6) has been involved in the pathogenesis of neurodegenerative disorders, such as Alzheimer's and Parkinson's diseases. Here, we show that IL-6 treatment of rat hippocampal neurons increases the calcium influx via NMDA-receptor, an effect that is prevented by the specific NMDA receptor antagonist MK-801 (dizocilpine). We also show that this calcium influx is mediated by the JAKs/STATs pathway, since the inhibitor of JAKs/STATs pathway, JAK 3 inhibitor, blocks calcium influx even in the presence of IL-6. This increase in calcium signal was dependent on external sources, since this signal was not observed in the presence of EGTA. Additional studies indicate that the increase in cytosolic calcium induces tau protein hyperphosphorylation, as revealed by using specific antibodies against Alzheimer phosphoepitopes. This anomalous tau hyperphosphorylation was dependent on both the JAKs/STATs pathway and NMDA receptor. These results suggest that IL-6 would induce a cascade of molecular events that produce a calcium influx through NMDA receptors, mediated by the JAKs/STATs pathway, which subsequently modifies the tau hyperphosphorylation patterns.

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Crossref · 10.1007/bf03033983

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  • IL-6 can activate JAK-STAT pathways, NMDA receptors, and p38-MAPK kinases, which all have been shown to contribute to p-tau formation.

    “IL-6 can also activate JAK-STAT pathways, NMDA receptors, and p38-MAPK kinases which all have been shown to contribute to p-tau formation [154, 159].”

    From Glial contributions to neurodegeneration in tauopathies (2017) · cites this paper as [159]

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Authors
Orellana, D. I., Quintanilla, R. A., Gonzalez-Billault, C., & Maccioni, R. B.
Affiliations
University of Chile (CL)
Corresponding author
Maccioni, Ricardo B.
Venue
Neurotoxicity Research
Published
2005-09
Volume
8
Issue
3-4
Pages
295-304
ISSN
  • 1029-8428 (ISSN-L)
  • 1476-3524
OpenAlex
W2165730202
Cited by
76
References
49
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 8 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 3 · 2014: 4 · 2013: 7 · 2012: 4
FWCI
1.79
Type
journal article
Language
en
Open access
Locations
  • Neurotoxicity Research (publishedVersion)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • Universidad de Chile (submittedVersion, cc-by-nc-nd)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
interleukin-6, JAK/STAT signaling, intracellular calcium influx, NMDA receptor, hippocampal neurons, tau hyperphosphorylation, neuroinflammation, neurodegenerative diseases, Alzheimer's disease, MK-801, JAK3 inhibitors, calcium signaling
MeSH terms
Animals, Animals, Newborn, Antibodies, Monoclonal, Calcium, Cells, Cultured, Chelating Agents, Drug Interactions, Egtazic Acid, Enzyme Inhibitors, Fluorescent Antibody Technique, Hippocampus, Neurons, Protein-Tyrosine Kinases, Time Factors, Blotting, Western, Signal Transduction, Interleukin-6, Dizocilpine Maleate, Rats, Sprague-Dawley, Excitatory Amino Acid Antagonists, Intracellular Space, STAT Transcription Factors, Rats, Janus Kinase 3

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