Palmitoylation facilitates inflammation through suppressing NOD2 degradation mediated by the selective autophagy receptor SQSTM1

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Abstract

The intracellular pattern recognition receptor NOD2 senses bacterial peptidoglycan to drive proinflammatory and antimicrobial responses. Dysregulation of NOD2 signaling confers susceptibility to several immunological and inflammatory diseases. Although palmitoylation of NOD2 is required for its membrane recruitment and activation, whether palmitoylation can modulate the stability of NOD2 to orchestrate inflammation remains unclear. Recently, we have revealed that S-palmitoylation restricts SQSTM1-mediated selective macroautophagic/autophagic degradation of NOD2, and identified a gain-of-function R444C variant of NOD2 short isoform (NOD2sR444C) in autoinflammatory disease, which induces excessive inflammation through its enhanced S-palmitoylation level and decreased autophagic degradation.

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Zhou, L., Zeng, H., Cui, J., & Jin, S. (2022). Palmitoylation facilitates inflammation through suppressing NOD2 degradation mediated by the selective autophagy receptor SQSTM1. Autophagy, 18(9), 2254–2255. https://doi.org/10.1080/15548627.2022.2054041

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