Cited by 322Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsNeuroscience and Neuropharmacology Research

Astrocytic interleukin-3 programs microglia and limits Alzheimer’s disease

Open access
McAlpine, Cameron S., Park, Joseph, Griciuc, Ana, Kim, Eunhee, Choi, Se Hoon, Iwamoto, Yoshiko, Kiss, Máté G., Christie, Kathleen A. +19 more·2021·Nature

Abstract

Communication within the glial cell ecosystem is essential for neuronal and brain health 1-3. The influence of glial cells on the accumulation and clearance of β-amyloid (Aβ) and neurofibrillary tau in the brains of individuals with Alzheimer's disease (AD) is poorly understood, despite growing awareness that these are therapeutically important interactions 4,5. Here we show, in humans and mice, that astrocyte-sourced interleukin-3 (IL-3) programs microglia to ameliorate the pathology of AD. Upon recognition of Aβ deposits, microglia increase their expression of IL-3Rα-the specific receptor for IL-3 (also known as CD123)-making them responsive to IL-3. Astrocytes constitutively produce IL-3, which elicits transcriptional, morphological, and functional programming of microglia to endow them with an acute immune response program, enhanced motility, and the capacity to cluster and clear aggregates of Aβ and tau. These changes restrict AD pathology and cognitive decline. Our findings identify IL-3 as a key mediator of astrocyte-microglia cross-talk and a node for therapeutic intervention in AD.

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  • Other inflammatory factors such as IL-3, IL-6, IL-18, TNFα, and MIF are involved in tau phosphorylation and/or truncation.

    “Other inflammatory factors such as IL-3, IL-6, IL-18, tumor necrosis factor-α (TNFα), and macrophage migration inhibitory factor (MIF) are also found to be involved in tau phosphorylation and/or truncation [166–170].”
  • Astrocyte-derived IL-3 binds to upregulated IL-3Rα in microglia, enhancing microglial migration toward Aβ deposits and clearance of Aβ aggregates.

    “Astrocyte-derived IL-3 bound to the upregulated IL-3Rα in microglia, enhancing microglial migration toward Aβ deposits and the Aβ aggregates clearance.”

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Research works printed but not linked: 6

  1. [39]Wang Y TREM2 lipid sensing sustains the microglial response in an Alzheimer’s disease model. Cell (2015) doi: 10.1016/j.cell.2015.01.049. PMC4477963 25728668 · DOI · Paper page
  2. [2]Anzai A Self-reactive CD4+ IL-3+ T cells amplify autoimmune inflammation in myocarditis by inciting monocyte chemotaxis. J. Exp. Med 216, 369– 383 (2019). 30670465 PMC6363430
  3. [3]Weber GF Interleukin-3 amplifies acute inflammation and is a potential therapeutic target in sepsis. Science (80-.). 347, 1260– 1265 (2015). PMC4376966 25766237
  4. [12]Griciuc A TREM2 Acts Downstream of CD33 in Modulating Microglial Pathology in Alzheimer’s Disease. Neuron 103, 820– 835.e7 (2019). 31301936 PMC6728215
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Authors
McAlpine, C. S., Park, J., Griciuc, A., Kim, E., Choi, S. H., Iwamoto, Y., Kiss, M. G., Christie, K. A., Vinegoni, C., Poller, W. C., Mindur, J. E., Chan, C. T., He, S., Janssen, H., Wong, L. P., Downey, J., Singh, S., Anzai, A., Kahles, F., Jorfi, M., Feruglio, P. F., Sadreyev, R. I., Weissleder, R., Kleinstiver, B. P., Nahrendorf, M., Tanzi, R. E., & Swirski, F. K.
Affiliations
  • Harvard University (US)
  • University of Verona (IT)
Corresponding author
Tanzi, Rudolph E.
Venue
Nature
Published
2021-07-14
Volume
595
Issue
7869
Pages
701-706
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W3182356919
Cited by
322
References
61
Citations by year
2026: 38 · 2025: 68 · 2024: 70 · 2023: 72 · 2022: 51 · 2021: 22
FWCI
21.52
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Heart, Lung, and Blood Institute (F31HL147364, R35HL135752, K99HL151750, R00HL151750, R35HL139598, P01HL131478, P01HL142494, R01HL158534)
  • National Cancer Institute (R01CA158534, R00CA218870, R13CA135752)
  • National Institute of General Medical Sciences (R35GM139598)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
interleukin-3, astrocytes, microglia, Alzheimer's disease, amyloid-beta clearance, tau clearance, CD123, microglial motility, cognitive decline, neuroinflammation
MeSH terms
Alzheimer Disease, Animals, Astrocytes, Cell Communication, Cells, Cultured, Humans, Interleukin-3, Mice, Inbred C57BL, Microglia, Mice, Knockout, Mice, Neural Stem Cells

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