Inflammasome Activation
Inflammasome Activation - Related Videos
03:44
Detection of Inflammasome Activation via Fluorescence Microscopy
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2025
This video demonstrates a method to detect NLRP3 inflammasome activation in macrophages using fluorescent reporter probes. The cells are treated with potassium ionophores and glycine to induce inflammasome assembly and caspase-1 activation. Fluorescent reporter probes visualize activated caspase-1, and cells are stained with a fluorescent dye for nuclei visualization.
09:04
Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
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Cited by 7 •
2014
Dendritic cells (DCs) secrete IL-1β in response to TLR8 recognition of synthetic purine, R848, followed by NLRP3 inflammasome activation with nigericin, therefore, IL-1β can be used to measure NLRP3 inflammasome activity. Intracellular cytokine staining, immunoblotting, and ELISA are used to accurately measure NLRP3 inflammasome priming and activation via IL-1β expression.
03:06
An In Vitro Technique to Study Inflammasome Complex Formation in Macrophages
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2025
This video demonstrates a technique to study NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome formation in primary macrophages via immunofluorescence. The macrophages are first primed with bacterial lipopolysaccharide (LPS) to upregulate NLRP3 protein expression. Exposing the macrophages to nigericin—a potassium ionophore—leads to the activation of NLRP3 and the formation of inflammasomes, which are visualized via immunofluorescence.
06:52
Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
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Cited by 14 •
2018
We describe the detection of NLRP3 inflammasome activation on cellular basis using fluorescence microscopy and staining for active caspase-1 and the adaptor, ASC. A lactate dehydrogenase release assay is presented to detect pyroptotic lysis on a population basis. These techniques can be adapted to study many aspects of inflammasome biology.
04:01
Assessment of the Activation of Multiple Caspases in Macrophages
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2025
This video demonstrates the assessment of multiple caspase activations in bone marrow-derived macrophages through stimulation with the influenza virus. Following macrophage lysis, heat-inactivation of lysate, and centrifugation, intracellular caspases are collected for subsequent immunological analysis.
FAQs
The process follows an ordered molecular sequence. Cytosolic sensor proteins detect infection, cellular stress, or tissue damage, then assemble a multiprotein complex that recruits the adaptor ASC. ASC enables activation of caspase-1, creating a signaling junction that converts danger recognition into cytokine processing and an inflammatory cellular response.
Caspase-1 processes interleukin-1β and interleukin-18, two cytokines that help express the inflammatory consequences of danger detection. The same pathway can trigger pyroptosis, an inflammatory form of cell death. Together, cytokine release and cellular disruption connect intracellular sensing with broader tissue inflammation and host defense.
Its protective value comes from responding to infection and other danger signals, helping the immune system react when cells or tissues are threatened. However, excessive or poorly controlled pathway activity can promote harmful inflammation. This dual role links the same innate immune mechanism to host protection and to autoinflammatory, infectious, metabolic, and degenerative diseases.
Three broad categories are identified: infection, cellular stress, and tissue damage. These inputs are biologically distinct, but each can indicate that normal cellular conditions have been disrupted. Their convergence on cytosolic sensor proteins allows inflammasome pathways to translate varied threats into related downstream events, including caspase-1 activation and inflammatory cytokine processing.
Medical research examines this pathway through two complementary goals: identifying biomarkers that reflect its activity and developing therapies that selectively limit excessive inflammation. The intended outcome is not simply to suppress immunity, but to distinguish harmful pathway overactivation from responses needed for essential immune protection.
The pathway provides a mechanistic framework for studying several disease categories, including autoinflammatory, infectious, metabolic, and degenerative disorders. Its relevance differs across conditions, but the shared focus is how innate immune sensing, cytokine processing, and inflammatory cell death may influence tissue injury or disease progression and reveal opportunities for targeted intervention.