{"title":"免疫蛋白酶体的选择性自噬可抑制先天性炎症。","authors":"Jiao Zhou, Huihui Li, Kefeng Lu","doi":"10.1080/15548627.2024.2353437","DOIUrl":null,"url":null,"abstract":"<p><p>Immunoproteasomes are involved in various inflammatory diseases. Upon stimulation, standard constitutive proteasomes are partially replaced by newly formed immunoproteasomes that promote inflammatory responses. How the upregulated immunoproteasomes are cleared to constrain hyper-inflammation is unknown. Recently, our studies showed that the pan-FGFR inhibitor LY2874455 efficiently activates macroautophagy/autophagy in macrophages, leading to the degradation of the immunoproteasomes. Immunoproteasome subunits are ubiquitinated and recognized by the selective autophagy receptor SQSTM1/p62. LY2874455 suppresses inflammation induced by lipopolysaccharide both <i>in vivo</i> and <i>in vitro</i> through autophagic degradation of the immunoproteasomes. In summary, our work uncovers a mechanism of inflammation suppression by autophagy in macrophages.</p>","PeriodicalId":93893,"journal":{"name":"Autophagy","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11346561/pdf/","citationCount":"0","resultStr":"{\"title\":\"Selective autophagy of the immunoproteasomes suppresses innate inflammation.\",\"authors\":\"Jiao Zhou, Huihui Li, Kefeng Lu\",\"doi\":\"10.1080/15548627.2024.2353437\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Immunoproteasomes are involved in various inflammatory diseases. Upon stimulation, standard constitutive proteasomes are partially replaced by newly formed immunoproteasomes that promote inflammatory responses. How the upregulated immunoproteasomes are cleared to constrain hyper-inflammation is unknown. Recently, our studies showed that the pan-FGFR inhibitor LY2874455 efficiently activates macroautophagy/autophagy in macrophages, leading to the degradation of the immunoproteasomes. Immunoproteasome subunits are ubiquitinated and recognized by the selective autophagy receptor SQSTM1/p62. LY2874455 suppresses inflammation induced by lipopolysaccharide both <i>in vivo</i> and <i>in vitro</i> through autophagic degradation of the immunoproteasomes. In summary, our work uncovers a mechanism of inflammation suppression by autophagy in macrophages.</p>\",\"PeriodicalId\":93893,\"journal\":{\"name\":\"Autophagy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11346561/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Autophagy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/15548627.2024.2353437\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/5/18 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Autophagy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/15548627.2024.2353437","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/5/18 0:00:00","PubModel":"Epub","JCR":"","JCRName":"","Score":null,"Total":0}
Selective autophagy of the immunoproteasomes suppresses innate inflammation.
Immunoproteasomes are involved in various inflammatory diseases. Upon stimulation, standard constitutive proteasomes are partially replaced by newly formed immunoproteasomes that promote inflammatory responses. How the upregulated immunoproteasomes are cleared to constrain hyper-inflammation is unknown. Recently, our studies showed that the pan-FGFR inhibitor LY2874455 efficiently activates macroautophagy/autophagy in macrophages, leading to the degradation of the immunoproteasomes. Immunoproteasome subunits are ubiquitinated and recognized by the selective autophagy receptor SQSTM1/p62. LY2874455 suppresses inflammation induced by lipopolysaccharide both in vivo and in vitro through autophagic degradation of the immunoproteasomes. In summary, our work uncovers a mechanism of inflammation suppression by autophagy in macrophages.