Kenny mediates selective autophagic degradation of the IKK complex to control innate immune responses.
Kenny mediates selective autophagic degradation of the IKK complex to control innate immune responses.
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DOI:
10.1038/s41467-017-01287-9
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发表时间:
2017-11-02
影响因子:
16.6
通讯作者:
Nezis IP
中科院分区:
文献类型:
--
作者:
Tusco R;Jacomin AC;Jain A;Penman BS;Larsen KB;Johansen T;Nezis IP
Selective autophagy is a catabolic process with which cellular material is specifically targeted for degradation by lysosomes. The function of selective autophagic degradation of self-components in the regulation of innate immunity is still unclear. Here we show that Drosophila Kenny, the homolog of mammalian IKKγ, is a selective autophagy receptor that mediates the degradation of the IκB kinase complex. Selective autophagic degradation of the IκB kinase complex prevents constitutive activation of the immune deficiency pathway in response to commensal microbiota. We show that autophagy-deficient flies have a systemic innate immune response that promotes a hyperplasia phenotype in the midgut. Remarkably, human IKKγ does not interact with mammalian Atg8-family proteins. Using a mathematical model, we suggest mechanisms by which pathogen selection might have driven the loss of LIR motif functionality during evolution. Our results suggest that there may have been an autophagy-related switch during the evolution of the IKKγ proteins in metazoans. Selective autophagy describes the selective degradation of cellular components upon stress or nutrient deficiency, but whether it modulates innate immunity is unclear. Here the authors show that Drosophila Kenny may be an evolution-selected autophagy receptor for the down-regulation of innate NF-κB activation
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DOI:
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发表时间:
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影响因子:
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发表时间:
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