宿主细胞死亡与 感染免疫应答的调节。
Host Cell Death and Modulation of Immune Response against Infection.
机构信息
College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA.
出版信息
Int J Mol Sci. 2024 Jun 6;25(11):6255. doi: 10.3390/ijms25116255.
() is the causative agent of tuberculosis (TB), a prevalent infectious disease affecting populations worldwide. A classic trait of TB pathology is the formation of granulomas, which wall off the pathogen, via the innate and adaptive immune systems. Some key players involved include tumor necrosis factor-alpha (TNF-α), foamy macrophages, type I interferons (IFNs), and reactive oxygen species, which may also show overlap with cell death pathways. Additionally, host cell death is a primary method for combating and controlling within the body, a process which is influenced by both host and bacterial factors. These cell death modalities have distinct molecular mechanisms and pathways. Programmed cell death (PCD), encompassing apoptosis and autophagy, typically confers a protective response against by containing the bacteria within dead macrophages, facilitating their phagocytosis by uninfected or neighboring cells, whereas necrotic cell death benefits the pathogen, leading to the release of bacteria extracellularly. Apoptosis is triggered via intrinsic and extrinsic caspase-dependent pathways as well as caspase-independent pathways. Necrosis is induced via various pathways, including necroptosis, pyroptosis, and ferroptosis. Given the pivotal role of host cell death pathways in host defense against , therapeutic agents targeting cell death signaling have been investigated for TB treatment. This review provides an overview of the diverse mechanisms underlying -induced host cell death, examining their implications for host immunity. Furthermore, it discusses the potential of targeting host cell death pathways as therapeutic and preventive strategies against infection.
结核分枝杆菌()是结核病(TB)的病原体,这是一种影响全球人口的流行传染病。结核病病理学的一个典型特征是通过先天和适应性免疫系统形成肉芽肿,将病原体隔离起来。涉及的一些关键参与者包括肿瘤坏死因子-α(TNF-α)、泡沫状巨噬细胞、I 型干扰素(IFNs)和活性氧物质,它们也可能与细胞死亡途径重叠。此外,宿主细胞死亡是在体内对抗和控制的主要方法,这一过程受宿主和细菌因素的影响。这些细胞死亡方式具有不同的分子机制和途径。程序性细胞死亡(PCD),包括细胞凋亡和自噬,通常通过将细菌包含在死亡的巨噬细胞内来对抗,促进未感染或邻近细胞吞噬它们,而坏死细胞死亡有利于病原体,导致细菌在细胞外释放。细胞凋亡通过内在和外在的 caspase 依赖性途径以及 caspase 非依赖性途径触发。坏死通过多种途径诱导,包括坏死性细胞死亡、细胞焦亡和铁死亡。鉴于宿主细胞死亡途径在宿主防御中的关键作用,针对细胞死亡信号的治疗剂已被用于结核病治疗。本综述概述了诱导宿主细胞死亡的多种机制,研究了它们对宿主免疫的影响。此外,还讨论了靶向宿主细胞死亡途径作为针对感染的治疗和预防策略的潜力。