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Type I IFN drives unconventional IL-1β secretion in lupus monocytes
Immunity ( IF 25.5 ) Pub Date : 2024-10-07 , DOI: 10.1016/j.immuni.2024.09.004
Simone Caielli, Preetha Balasubramanian, Juan Rodriguez-Alcazar, Uthra Balaji, Lauren Robinson, Zurong Wan, Jeanine Baisch, Cynthia Smitherman, Lynnette Walters, Paola Sparagana, Djamel Nehar-Belaid, Radu Marches, Lorien Nassi, Katie Stewart, Julie Fuller, Jacques F. Banchereau, Jinghua Gu, Tracey Wright, Virginia Pascual

Opsonization of red blood cells that retain mitochondria (Mito+ RBCs), a feature of systemic lupus erythematosus (SLE), triggers type I interferon (IFN) production in macrophages. We report that monocytes (Mos) co-produce IFN and mature interleukin-1β (mIL-1β) upon Mito+ RBC opsonization. IFN expression depended on cyclic GMP-AMP synthase (cGAS) and RIG-I-like receptors’ (RLRs) sensing of Mito+ RBC-derived mitochondrial DNA (mtDNA) and mtRNA, respectively. Interleukin-1β (IL-1β) production was initiated by the RLR antiviral signaling adaptor (MAVS) pathway recognition of Mito+ RBC-derived mtRNA. This led to the cytosolic release of Mo mtDNA, which activated the inflammasome. Importantly, mIL-1β secretion was independent of gasdermin D (GSDMD) and pyroptosis but relied on IFN-inducible myxovirus-resistant protein 1 (MxA), which facilitated the incorporation of mIL-1β into a trans-Golgi network (TGN)-mediated secretory pathway. RBC internalization identified a subset of blood Mo expressing IFN-stimulated genes (ISGs) that released mIL-1β and expanded in SLE patients with active disease.

中文翻译:


I 型 IFN 驱动狼疮单核细胞中非常规 IL-1β 分泌



保留线粒体的红细胞 (Mito+ RBC) 的调理作用是系统性红斑狼疮 (SLE) 的一个特征,可触发巨噬细胞中 I 型干扰素 (IFN) 的产生。我们报道,单核细胞 (Mos) 在 Mito+ RBC 调理素化后共同产生 IFN 和成熟白细胞介素-1β (mIL-1β)。IFN 表达分别依赖于环状 GMP-AMP 合酶 (cGAS) 和 RIG-I 样受体 (RLR) 对 Mito+ RBC 衍生的线粒体 DNA (mtDNA) 和 mtRNA 的感应。白细胞介素-1β (IL-1β) 的产生是由 Mito+ RBC 来源的 mtRNA 的 RLR 抗病毒信号接头蛋白 (MAVS) 通路识别引发的。这导致 Mo mtDNA 的胞质释放,从而激活炎性小体。重要的是,mIL-1β 分泌独立于 gasdermin D (GSDMD) 和焦亡,但依赖于 IFN 诱导的粘液病毒抗性蛋白 1 (MxA),这有助于将 mIL-1β 掺入反式高尔基体网络 (TGN) 介导的分泌途径。RBC 内化鉴定了表达 IFN 刺激基因 (ISG) 的血液 Mo 亚群,该基因在活动性疾病的 SLE 患者中释放 mIL-1β 并扩增。
更新日期:2024-10-07
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