他汀类药物通过促进自噬减轻巨噬细胞负担。

Statin Decreases Burden in Macrophages by Promoting Autophagy.

作者信息

Liao Wei-Chih, Huang Mei-Zi, Wang Michelle Lily, Lin Chun-Jung, Lu Tzu-Li, Lo Horng-Ren, Pan Yi-Jiun, Sun Yu-Chen, Kao Min-Chuan, Lim Hui-Jing, Lai Chih-Ho

机构信息

Graduate Institute of Clinical Medical Science, China Medical UniversityTaichung, Taiwan; Department of Pulmonary and Critical Care Medicine, China Medical University HospitalTaichung, Taiwan.

Department of Medical Laboratory Science and Biotechnology, China Medical UniversityTaichung, Taiwan; Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung UniversityTaoyuan, Taiwan.

出版信息

Front Cell Infect Microbiol. 2017 Jan 17;6:203. doi: 10.3389/fcimb.2016.00203. eCollection 2016.

Abstract

Statins, 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) reductase inhibitors, have been found to provide protective effects against several bacterial infectious diseases. Although the use of statins has been shown to enhance antimicrobial treated eradication and reduce -mediated inflammation, the mechanisms underlying these effects remain unclear. In this study, and macrophage models were established to investigate the molecular pathways involved in statin-mediated inhibition of . -induced inflammation. Our study showed that statin treatment resulted in a dose-dependent decrease in intracellular . burden in both RAW264.7 macrophage cells and murine peritoneal exudate macrophages (PEMs). Furthermore, statin yielded enhanced early endosome maturation and subsequent activation of the autophagy pathway, which promotes lysosomal fusion resulting in degradation of sequestered bacteria, and in turn attenuates interleukin (IL)-1β production. These results indicate that statin not only reduces cellular cholesterol but also decreases the . burden in macrophages by promoting autophagy, consequently alleviating . -induced inflammation.

摘要

他汀类药物,即3-羟基-3-甲基戊二酰辅酶A(HMG-CoA)还原酶抑制剂,已被发现对多种细菌感染性疾病具有保护作用。尽管已证明使用他汀类药物可增强抗菌治疗的根除效果并减轻炎症反应,但其作用机制仍不清楚。在本研究中,建立了RAW264.7和巨噬细胞模型,以研究他汀类药物介导的抑制单核细胞增多性李斯特菌(Lm)诱导的炎症所涉及的分子途径。我们的研究表明,他汀类药物治疗导致RAW264.7巨噬细胞和小鼠腹腔渗出巨噬细胞(PEMs)中细胞内Lm负荷呈剂量依赖性降低。此外,他汀类药物可增强早期内体成熟并随后激活自噬途径,这促进溶酶体融合,导致被隔离细菌的降解,进而减弱白细胞介素(IL)-1β的产生。这些结果表明,他汀类药物不仅降低细胞胆固醇水平,还通过促进自噬减少巨噬细胞中的Lm负荷,从而减轻Lm诱导的炎症。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a18a/5239775/4b28459b1292/fcimb-06-00203-g0001.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索