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The NLRP3 inflammasome is a key multi-protein complex controlling inflammation, particularly interleukin-1β (IL-1β) production. Here, we present a protocol to profile spatially resolved NLRP3 inflammasome complexes using ascorbic peroxidase 2 (APEX2)-based proximity labeling combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS). We describe steps for design and generation of the fusion construct, characterization of the stable FLAG-NLRP3-APEX2 expression cell line by western blotting/imaging, biotinylated proteome enrichment, and mass spectrometry analysis. For complete details on the use and execution of this protocol, please refer to Liang et al.1.

Original publication

DOI

10.1016/j.xpro.2024.103417

Type

Journal article

Journal

STAR Protoc

Publication Date

25/10/2024

Volume

5

Keywords

immunology, mass spectrometry, molecular biology, proteomics