Immune cells fold and damage fungal hyphae

JM Bain, MF Alonso, DS Childers… - Proceedings of the …, 2021 - National Acad Sciences
JM Bain, MF Alonso, DS Childers, CA Walls, K Mackenzie, A Pradhan, LE Lewis, J Louw…
Proceedings of the National Academy of Sciences, 2021National Acad Sciences
Innate immunity provides essential protection against life-threatening fungal infections.
However, the outcomes of individual skirmishes between immune cells and fungal
pathogens are not a foregone conclusion because some pathogens have evolved
mechanisms to evade phagocytic recognition, engulfment, and killing. For example,
Candida albicans can escape phagocytosis by activating cellular morphogenesis to form
lengthy hyphae that are challenging to engulf. Through live imaging of C. albicans …
Innate immunity provides essential protection against life-threatening fungal infections. However, the outcomes of individual skirmishes between immune cells and fungal pathogens are not a foregone conclusion because some pathogens have evolved mechanisms to evade phagocytic recognition, engulfment, and killing. For example, Candida albicans can escape phagocytosis by activating cellular morphogenesis to form lengthy hyphae that are challenging to engulf. Through live imaging of C. albicans–macrophage interactions, we discovered that macrophages can counteract this by folding fungal hyphae. The folding of fungal hyphae is promoted by Dectin-1, β2-integrin, VASP, actin–myosin polymerization, and cell motility. Folding facilitates the complete engulfment of long hyphae in some cases and it inhibits hyphal growth, presumably tipping the balance toward successful fungal clearance.
National Acad Sciences
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