β-glucan signaling connects phagocytosis to autophagy

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Abstract

A growing list of innate immune receptors is being defined that recognize polysaccharides of microbial cell walls. Fungal β-glucan recognition by the receptor Dectin-1 triggers inflammatory immune responses in macrophages and dendritic cells that are appropriate for defense against fungal pathogens. Among these responses is the specific recruitment of the autophagy-related protein light chain 3 (LC3) to phagosomes containing fungi. Studies documenting LC3's recruitment to phagosomes containing β-glucan and other nonsugar particles suggest that LC3 plays a role in regulating phagocytosis and its related immunological responses.

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