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New Insights of Human Parvovirus B19 in Modulating Erythroid Progenitor Cell Differentiation.
Viral Immunology ( IF 2.2 ) Pub Date : 2020-09-25 , DOI: 10.1089/vim.2020.0013
Shuwen Feng 1 , Dongxin Zeng 1 , Junwen Zheng 1 , Dongchi Zhao 1
Affiliation  

Human parvovirus B19 (B19), a human pathogen of the erythroparvovirus genus, is responsible for a variety of diseases. B19 cause less symptoms in healthy individuals, also cause acute and chronic anemia in immunodeficiency patients. Transient aplastic crisis and pure red cell aplasia are two kinds of anemic hemogram, respectively, in acute and chronic B19 infection phase, especially occurring in patients with a shortened red cell survival or with immunodeficiency. In addition, B19-infected pregnant women may cause hydrops fetalis or fetal loss. B19 possesses high affinity to bone marrow and fetal liver due to its extremely restricted cytotoxicity to erythroid progenitor cells (EPCs) mediated by viral proteins. The nonstructural protein NS1 is considered to be the major pathogenic factor, which has been shown to inhibit the differentiation and maturation of EPCs through inducing viral DNA damage responses and cell cycle arrest. The time phase property of NS1 activity during DNA replication and conformity to transient change of hemogram are suggestive of its role in regulating differentiation of hematopoietic cells, which is not completely understood. In this review, we summarized the bridge between B19 NS1 and Notch signaling pathway or transcriptional factors GATA, which play an important role in erythroid cell proliferation and differentiation, to provide a new insight of the potential mechanism of B19-induced differential inhibition of EPCs.

中文翻译:

人类细小病毒 B19 在调节红细胞祖细胞分化方面的新见解。

人类细小病毒 B19 (B19) 是红细小病毒属的人类病原体,可导致多种疾病。B19 在健康个体中引起的症状较少,在免疫缺陷患者中也会引起急性和慢性贫血。短暂性再生障碍危象和纯红细胞再生障碍分别是急性和慢性 B19 感染期的两种贫血血象,尤其发生在红细胞存活时间缩短或免疫缺陷的患者中。此外,感染 B19 的孕妇可能会导致胎儿水肿或胎儿丢失。由于 B19 对病毒蛋白介导的红细胞祖细胞 (EPC) 的细胞毒性极其有限,因此它对骨髓和胎肝具有高亲和力。非结构蛋白 NS1 被认为是主要的致病因素,它已被证明通过诱导病毒 DNA 损伤反应和细胞周期停滞来抑制 EPC 的分化和成熟。DNA 复制过程中 NS1 活性的时间相位特性和对血象瞬时变化的一致性暗示其在调节造血细胞分化中的作用,但尚未完全了解。在这篇综述中,我们总结了 B19 NS1 与 Notch 信号通路或转录因子 GATA 之间的桥梁,它们在红细胞增殖和分化中起重要作用,为 B19 诱导 EPC 差异抑制的潜在机制提供了新的见解。DNA 复制过程中 NS1 活性的时间相位特性和对血象瞬时变化的一致性暗示其在调节造血细胞分化中的作用,但尚未完全了解。在这篇综述中,我们总结了 B19 NS1 与 Notch 信号通路或转录因子 GATA 之间的桥梁,它们在红细胞增殖和分化中起重要作用,为 B19 诱导 EPC 差异抑制的潜在机制提供了新的见解。DNA 复制过程中 NS1 活性的时间相位特性和对血象瞬时变化的一致性暗示其在调节造血细胞分化中的作用,但尚未完全了解。在这篇综述中,我们总结了 B19 NS1 与 Notch 信号通路或转录因子 GATA 之间的桥梁,它们在红细胞增殖和分化中起重要作用,为 B19 诱导 EPC 差异抑制的潜在机制提供了新的见解。
更新日期:2020-10-02
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