Cited by 352Neuroinflammation and Neurodegeneration MechanismsCytokine Signaling Pathways and InteractionsTryptophan and brain disorders

Interleukin-6, a mental cytokine

Spooren, Anneleen, Kolmus, Krzysztof, Laureys, Guy, Clinckers, Ralph, De Keyser, Jacques, Haegeman, Guy, Gerlo, Sarah·2011·Brain Research Reviews

Abstract

Almost a quarter of a century ago, interleukin-6 (IL-6) was discovered as an inflammatory cytokine involved in B cell differentiation. Today, IL-6 is recognized to be a highly versatile cytokine, with pleiotropic actions not only in immune cells, but also in other cell types, such as cells of the central nervous system (CNS). The first evidence implicating IL-6 in brain-related processes originated from its dysregulated expression in several neurological disorders such as multiple sclerosis, Alzheimer's disease and Parkinson's disease. In addition, IL-6 was shown to be involved in multiple physiological CNS processes such as neuron homeostasis, astrogliogenesis and neuronal differentiation. The molecular mechanisms underlying IL-6 functions in the brain have only recently started to emerge. In this review, an overview of the latest discoveries concerning the actions of IL-6 in the nervous system is provided. The central position of IL-6 in the neuroinflammatory reaction pattern, and more specifically, the role of IL-6 in specific neurodegenerative processes, which accompany Alzheimer's disease, multiple sclerosis and excitotoxicity, are discussed. It is evident that IL-6 has a dichotomic action in the CNS, displaying neurotrophic properties on the one hand, and detrimental actions on the other. This is in agreement with its central role in neuroinflammation, which evolved as a beneficial process, aimed at maintaining tissue homeostasis, but which can become malignant when exaggerated. In this perspective, it is not surprising that 'well-meant' actions of IL-6 are often causing harm instead of leading to recovery.

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Crossref · 10.1016/j.brainresrev.2011.01.002

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  • In cell culture, Aβ stimulates IL-6 release, which leads to microglial differentiation, thought to further enable them to degrade Aβ.

    “In cell culture, Aβ stimulates IL-6 release which leads to microglial differentiation, thought to further enable them to degrade Aβ [154].”

    From Glial contributions to neurodegeneration in tauopathies (2017) · cites this paper as [154]

  • 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 [154]

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Authors
Spooren, A., Kolmus, K., Laureys, G., Clinckers, R., De Keyser, J., Haegeman, G., & Gerlo, S.
Affiliations
  • Ghent University (BE)
  • Vrije Universiteit Brussel (BE)
Corresponding author
Spooren, Anneleen
Venue
Brain Research Reviews
Publisher
Elsevier BV
Published
2011-06
Volume
67
Issue
1-2
Pages
157-183
ISSN
0165-0173 (ISSN-L)
OpenAlex
W2030593831
Cited by
352
References
325
Citations by year
2026: 6 · 2025: 10 · 2024: 25 · 2023: 20 · 2022: 21 · 2021: 20 · 2020: 22 · 2019: 25 · 2018: 19 · 2017: 30 · 2016: 22 · 2015: 29 · 2014: 34 · 2013: 30 · 2012: 26
FWCI
2.89
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
  • VUBIR (Vrije Universiteit Brussel) (submittedVersion)
Funders
  • Fonds Wetenschappelijk Onderzoek
  • Vlaamse regering
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
interleukin-6, neuroinflammation, neurodegeneration, Alzheimer's disease, multiple sclerosis, Parkinson's disease, excitotoxicity, neurotrophic effects, astrogliogenesis, neuronal differentiation, central nervous system, cytokines
MeSH terms
Animals, Mental Disorders, Brain Damage, Chronic, Humans, Inflammation, Interleukin-6, Cell Death, Neurodegenerative Diseases

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