Cited by 2,441Inflammasome and immune disordersNeuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatments

The NALP3 inflammasome is involved in the innate immune response to amyloid-β

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Halle, Annett, Hornung, Veit, Petzold, Gabor C, Stewart, Cameron R, Monks, Brian G, Reinheckel, Thomas, Fitzgerald, Katherine A, Latz, Eicke +2 more·2008·Nature Immunology

Abstract

The fibrillar peptide amyloid-beta (A beta) has a chief function in the pathogenesis of Alzheimer's disease. Interleukin 1 beta (IL-1 beta) is a key cytokine in the inflammatory response to A beta. Insoluble materials such as crystals activate the inflammasome formed by the cytoplasmic receptor NALP3, which results in the release of IL-1 beta. Here we identify the NALP3 inflammasome as a sensor of A beta in a process involving the phagocytosis of A beta and subsequent lysosomal damage and release of cathepsin B. Furthermore, the IL-1 beta pathway was essential for the microglial synthesis of proinflammatory and neurotoxic factors, and the inflammasome, caspase-1 and IL-1 beta were critical for the recruitment of microglia to exogenous A beta in the brain. Our findings suggest that activation of the NALP3 inflammasome is important for inflammation and tissue damage in Alzheimer's disease.

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Crossref · 10.1038/ni.1636

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  • Cathepsin B leaking from destabilized lysosomes may mediate NLRP3 inflammasome activation upon SHIP1 inhibition.

    “Based on the previous literature42,43,46, we reasoned that cathepsin B leaking from the destabilized lysosomes may mediate the NLRP3 inflammasome activation upon SHIP1 inhibition11.”

    From INPP5D/SHIP1 regulates endo-lysosomal function and cargo-selective phagocytosis in human microglia (2025) · cites this paper as [43]

    In Results (“Lysosomal damage triggers release of cathepsin B”; page unavailable), the paper reports that amyloid-β damages microglial lysosomes, releases cathepsin B, and links cathepsin B to inflammasome activation. It does not examine SHIP1 inhibition, so it supports the proposed mechanism as a rationale, not its occurrence upon SHIP1 inhibition. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Fibrillar Aβ, following phagocytosis by microglia, activates the NLRP3 inflammasome and leads to increases in secretion of IL-1β and IL-18.

    “Fibrillar Aβ (fAβ), following phagocytosis by microglia, activates the NLRP3 inflammasome and leads to increases in secretion of IL-1β and IL-18.”

    From Microglial function, INPP5D/SHIP1 signaling, and NLRP3 inflammasome activation: implications for Alzheimer’s disease (2023) · cites this paper as [78]

    The Results sections “Fibrillar Aβ induces IL-1β from microglia” and “Aβ causes lysosomal damage and IL-1β release” report that fibrillar Aβ triggers IL-1β release from microglia and that phagocytosis is required; the paper also identifies NALP3 (NLRP3) inflammasome activation in this pathway. The copy does not report increased IL-18 secretion after Aβ exposure; its Discussion mentions IL-18 only when describing its receptor. The IL-1β experiments used LPS-primed mouse microglia. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • Halle et al. found that fibrillar Aβ can induce secretion of IL-1β which depends on the presence of NLRP3.

    “Halle et al. found that fibrillar Aβ can induce the secretion of IL-1β which depends on the presence of NLRP3.352,353”

    From Role of neuroinflammation in neurodegeneration development (2023) · cites this paper as [352]

  • Lysosomal cathepsins, such as cathepsin B, can induce NLRP3 inflammasome activation upon leaking into the cytosol following lysosomal membrane permeabilization (LMP).

    “lysosomal cathepsins, such as cathepsin B, can induce NLRP3 inflammasome activation upon leaking into the cytosol following lysosomal membrane permeabilization (LMP)42,43”
  • Fibrillar Aβ phagocytosis results in lysosomal dysfunction and release of lysosomal contents into the cytoplasm, including cathepsin B, which is a mediator of inflammasome activation induced by Aβ.

    “fAβ phagocytosis results in lysosomal dysfunction and release of lysosomal contents into the cytoplasm, including the lysosomal protease cathepsin B, which is a mediator of inflammasome activation induced by Aβ [78].”

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Authors
Halle, A., Hornung, V., Petzold, G. C., Stewart, C. R., Monks, B. G., Reinheckel, T., Fitzgerald, K. A., Latz, E., Moore, K. J., & Golenbock, D. T.
Affiliations
  • University of Massachusetts Chan Medical School (US)
  • Harvard University (US)
  • University of Freiburg (DE)
Corresponding author
Golenbock, Douglas T
Venue
Nature Immunology
Published
2008-07-11
Volume
9
Issue
8
Pages
857-865
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W2119098586
Cited by
2,441
References
50
Citations by year
2026: 92 · 2025: 124 · 2024: 143 · 2023: 165 · 2022: 191 · 2021: 188 · 2020: 169 · 2019: 151 · 2018: 136 · 2017: 139 · 2016: 138 · 2015: 146 · 2014: 149 · 2013: 153 · 2012: 98
FWCI
35.20
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship@UMassChan (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • National Institute on Aging (R01AG020255, AG20255)
  • National Institute of General Medical Sciences (R37GM054060, R01GM054060, GM 54060)
  • National Institute of Allergy and Infectious Diseases (AI065483, R01AI065483)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
NLRP3 inflammasome, amyloid-beta, Alzheimer's disease, innate immunity, IL-1β, caspase-1, microglia, phagocytosis, lysosomal damage, cathepsin B, neuroinflammation, neurotoxicity
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Alzheimer Disease, Carrier Proteins, Immunity, Innate, Inflammation, Amyloid beta-Peptides, Inflammation Mediators

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