Nlrp3 Inflammasome
Nlrp3 Inflammasome - Related Videos
03:44
Detection of Inflammasome Activation via Fluorescence Microscopy
0 Views •
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
0 Views •
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
0 Views •
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.
03:02
A Lactate Dehydrogenase Release Assay To Detect Macrophage Death Following Nigericin Exposure
0 Views •
2025
This video demonstrates the lactate dehydrogenase assay to detect inflammasome-mediated macrophage death. The macrophages are exposed to lipopolysaccharide for priming, followed by exposure to nigericin to cause inflammasome-induced cell death, which is determined by the lactate dehydrogenase assay.
06:52
Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
0 Views •
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.
FAQs
Activation begins when NLRP3 detects cellular stress or microbial threats and assembles with ASC and procaspase-1. This assembly creates the signaling platform required for caspase-1 activation. The pathway therefore links danger detection inside immune cells to downstream inflammatory events, making it useful for studying how infection and tissue injury generate innate immune responses.
ASC and procaspase-1 are essential assembly partners for NLRP3. Once the complex forms, procaspase-1 is enabled to become active caspase-1. Caspase-1 then drives maturation of interleukin-1β and interleukin-18 and contributes to pyroptosis. Examining these sequential roles helps distinguish inflammasome assembly from the inflammatory outcomes that follow it.
These outcomes show how inflammasome signaling affects inflammation at more than one level. Caspase-1 enables maturation of interleukin-1β and interleukin-18, while pyroptosis represents inflammatory cell death. Assessing both cytokine maturation and cell-death responses provides a broader view of pathway activity than considering complex assembly alone, especially during infection or tissue injury.
The pathway responds to diverse signals rather than a single narrowly defined trigger. Microbial threats can activate it during infection, while cellular stress associated with tissue injury can produce a similar inflammatory response. This breadth makes NLRP3 relevant to both host defense and harmful inflammation, but the overview does not specify that every trigger uses an identical molecular route.
A pathway-focused investigation can follow the sequence from activating signal to complex assembly, caspase-1 activation, cytokine maturation, and pyroptosis. These stages provide related but distinct readouts of the response. Comparing them helps researchers determine whether a stimulus affects initial sensing, inflammasome formation, downstream inflammatory signaling, or inflammatory cell death.
NLRP3 research is especially relevant when investigators want to understand innate immune responses to pathogens, cellular stress, or tissue injury. The pathway also provides context for studying host defense, chronic inflammatory disease, and therapies intended to selectively limit excessive inflammasome activity. Its importance lies in connecting protective inflammation with the potential consequences of dysregulated signaling.