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.
复制标题

DOI:
10.1038/s41467-017-01287-9
复制
发表时间:
2017-11-02
影响因子:
16.6
通讯作者:
Nezis IP
Nezis IP
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Tusco R;Jacomin AC;Jain A;Penman BS;Larsen KB;Johansen T;Nezis IP

文献摘要

参考文献

被引文献

相似文献

选择性自噬是一种分解代谢过程,其中细胞物质被溶酶体特异性地靶向降解。选择性自噬降解自身成分在天然免疫调节中的作用尚不清楚。在这里,我们表明,果蝇肯尼,哺乳动物IKKγ的同源物,是一种选择性的自噬受体,介导的IκB激酶复合物的降解。IκB激酶复合物的选择性自噬降解可防止免疫缺陷途径响应肠道微生物群的组成性激活。我们发现,自噬缺陷的苍蝇有一个系统性的先天免疫反应,促进中肠的增生表型。值得注意的是,人IKKγ不与哺乳动物Atg 8家族蛋白相互作用。使用一个数学模型,我们提出的机制,病原体的选择可能会导致LIR基序功能在进化过程中的损失。我们的研究结果表明,在后生动物中IKKγ蛋白的进化过程中可能存在自噬相关的开关。选择性自噬描述了在压力或营养缺乏时细胞成分的选择性降解,但它是否调节先天免疫尚不清楚。在这里,作者表明,果蝇肯尼可能是一个进化选择的自噬受体下调先天NF-κB激活
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
DOI: 10.1073/pnas.0404952102
发表时间: 2005-01-25
影响因子: 11.1
作者:
Choe, KM;Lee, H;Anderson, KV
通讯作者: Anderson, KV
DOI: 10.1073/pnas.0812022106
发表时间: 2009-06-16
影响因子: 11.1
作者:
Erturk-Hasdemir, Deniz;Broemer, Meike;Silverman, Neal
通讯作者: Silverman, Neal
DOI: 10.1016/s1097-2765(00)80392-5
发表时间: 1999-11-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
Hedengren, M;Åsling, B;Hultmark, D
通讯作者: Hultmark, D
DOI: 10.1098/rspb.1995.0147
发表时间: 1995-09-22
影响因子: 4.7
作者:
GUPTA, S;HILL, AVS
通讯作者: HILL, AVS
DOI: 10.1242/jcs.126128
发表时间: 2013-08-01
影响因子: 4
作者:
Birgisdottir, Asa Birna;Lamark, Trond;Johansen, Terje
通讯作者: Johansen, Terje