Iba Toshiaki, Helms Julie, Maier Cheryl L, Ferrer Ricard, Levy Jerrold H
Department of Emergency and Disaster Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo Bunkyo-Ku, Tokyo, 113-8421, Japan.
Strasbourg University (UNISTRA); Strasbourg University Hospital, Medical Intensive Care Unit, NHC; INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France.
J Intensive Care. 2024 Oct 25;12(1):41. doi: 10.1186/s40560-024-00754-y.
In sepsis, inflammation, and nutrient deficiencies endanger cellular homeostasis and survival. Autophagy is primarily a mechanism of cellular survival under fasting conditions. However, autophagy-dependent cell death, known as autophagic cell death, is proinflammatory and can exacerbate sepsis. Autophagy also regulates various types of non-inflammatory and inflammatory cell deaths. Non-inflammatory apoptosis tends to suppress inflammation, however, inflammatory necroptosis, pyroptosis, ferroptosis, and autophagic cell death lead to the release of inflammatory cytokines and damage-associated molecular patterns (DAMPs) and amplify inflammation. The selection of cell death mechanisms is complex and often involves a mixture of various styles. Similarly, protective autophagy and lethal autophagy may be triggered simultaneously in cells. How cells balance the regulatory mechanisms of these processes is an area of interest that is still under investigation. Therapies aimed at modulating autophagy are considered promising. Enhancing autophagy helps clear and recycle damaged organelles and reduce the burden of inflammatory processes while inhibiting excessive autophagy, which could prevent autophagic cell death. In this review, we introduce recent advances in research and the complex regulatory system of autophagy in sepsis.
在脓毒症中,炎症和营养缺乏会危及细胞内稳态和细胞存活。自噬主要是禁食条件下细胞存活的一种机制。然而,依赖自噬的细胞死亡,即自噬性细胞死亡,具有促炎作用,会加重脓毒症。自噬还调节各种类型的非炎性和炎性细胞死亡。非炎性凋亡往往会抑制炎症,然而,炎性坏死性凋亡、细胞焦亡、铁死亡和自噬性细胞死亡会导致炎性细胞因子和损伤相关分子模式(DAMPs)的释放,并放大炎症。细胞死亡机制的选择很复杂,通常涉及多种方式的混合。同样,保护性自噬和致死性自噬可能会在细胞中同时被触发。细胞如何平衡这些过程的调节机制是一个仍在研究中的有趣领域。旨在调节自噬的疗法被认为很有前景。增强自噬有助于清除和回收受损细胞器,并减轻炎症过程的负担,同时抑制过度自噬,从而防止自噬性细胞死亡。在这篇综述中,我们介绍了脓毒症中自噬研究的最新进展及其复杂的调节系统。
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