Departamento de Enfermedades Infecciosas del Adulto, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile.
Infect Immun. 2020 Feb 20;88(3). doi: 10.1128/IAI.00649-19.
Tuberculosis (TB) is an infectious disease of extremely high epidemiological burden worldwide that is easily acquired through the inhalation of infected respiratory droplets. The complex pathogenesis of this infection spans from subjects never developing this disease despite intense exposure, to others in which immune containment fails catastrophically and severe or disseminated forms of disease ensue. In recent decades, microRNAs (miRNAs) have gained increasing attention due to their role as gene silencers and because of their altered expression in diverse human diseases, including some infections. Recent research regarding miRNAs and TB has revealed that the expression profile for particular miRNAs clearly changes upon infection and also varies in the different stages of this disease. However, despite the growing number of studies-some of which have even proposed some miRNAs as potential biomarkers-methodological variations and key differences in relevant factors, such as sex and age, cell type analyzed, strain, and antimicrobial therapy status, strongly hinder the comparison of data. In this review, we summarize and discuss the literature and highlight the role of selected miRNAs that have specifically and more consistently been associated with infection, together with a discussion of the possible gene and immune regulation pathways involved.
结核病(TB)是一种具有极高流行病学负担的传染病,通过吸入受感染的呼吸道飞沫很容易传播。这种感染的复杂发病机制包括从未接触过这种疾病的人,也包括那些免疫失控导致严重或播散性疾病的人。在最近几十年,由于其作为基因沉默子的作用以及在包括某些感染在内的多种人类疾病中表达异常,microRNAs(miRNAs)越来越受到关注。最近关于 miRNAs 和 TB 的研究表明,特定 miRNAs 的表达谱在感染后明显改变,而且在这种疾病的不同阶段也有所不同。然而,尽管研究数量不断增加,其中一些甚至提出了一些 miRNAs 作为潜在的生物标志物,但方法学的差异以及性别和年龄、分析的细胞类型、菌株和抗菌治疗状态等相关因素的关键差异,严重阻碍了数据的比较。在这篇综述中,我们总结和讨论了文献,并强调了与感染特异性和更一致相关的选定 miRNAs 的作用,同时讨论了涉及的可能的基因和免疫调节途径。
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