Myeloid-derived suppressor cells: the dark knight or the joker in viral infections?

Myeloid-derived suppressor cells: the dark knight or the joker in viral infections?
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DOI:
10.1111/imr.12084
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发表时间:
2013-09
影响因子:
8.7
通讯作者:
Hahn YS
Hahn YS
中科院分区:
医学1区
文献类型:
--
作者:
Goh C;Narayanan S;Hahn YS

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髓源性抑制细胞(MDSC)是髓源性的未成熟细胞,经常在肿瘤微环境和癌症患者的血液中发现。近年来,在非癌症环境中也发现了MDSC,包括一些病毒感染。病毒逃避宿主免疫以建立病毒持久性的机制与肿瘤逃逸的机制惊人地相似,促使人们研究慢性病毒感染中MDSC的产生和功能。重要的是,与肿瘤微环境类似,MDSC通过限制包括T细胞、自然杀伤细胞和抗原呈递细胞在内的几种免疫细胞的功能来有效抑制抗病毒宿主免疫。在这篇文章中,我们回顾了MDSC的产生,积累和生存的机制的研究,努力了解他们在病毒感染的紧急重要性。我们包括一个不断增长的列表中的病毒感染MDSC已被报道。最后,我们讨论了MDSC如何在建立慢性病毒感染中发挥作用,并确定了靶向MDSC的潜在治疗方法。
Myeloid derived suppressor cells (MDSCs) are immature cells of myeloid origin, frequently found in tumor microenvironments and in the blood of cancer patients. In recent years, MDSCs have also been found in non-cancer settings, including a number of viral infections. The evasion of host immunity employed by viruses to establish viral persistence strikingly parallels mechanisms of tumor escape, prompting investigations into the generation and function of MDSCs in chronic viral infections. Importantly, analogous to the tumor microenvironment, MDSCs effectively suppress anti-viral host immunity by limiting the function of several immune cells including T cells, natural killer cells, and antigen-presenting cells. In this article, we review studies on the mechanisms of MDSC generation, accumulation, and survival in an effort to understanding their emergent importance in viral infections. We include a growing list of viral infections in which MDSCs have been reported. Finally, we discuss how MDSCs might play a role in establishing chronic viral infections and identify potential therapeutics that target MDSCs.
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