孕期压力

IF 27.7 1区 医学 Q1 IMMUNOLOGY
Ioana Staicu
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引用次数: 0

摘要

逆转录转座子是一种可转座的DNA元件,在造血干细胞(HSC)中可被衰老、辐照或化疗激活。Phan等人在《科学》(Science)杂志上报告了逆转录转座子(包括内源性逆转录病毒和长穿插核元件)的上调,以及IFN调控基因在脾脏造血干细胞(而非骨髓造血干细胞)中的诱导,以及STING磷酸化和Ifna在妊娠小鼠(而非非妊娠小鼠)脾脏和骨髓造血干细胞中的表达。连续出血和雌二醇处理也会诱导脾脏造血干细胞中的逆转录病毒和 IFN 调控基因。与非妊娠或未经雌激素处理的小鼠的骨髓造血干细胞(脾脏造血干细胞过于稀少)相比,妊娠小鼠或经雌激素处理的小鼠的脾脏造血干细胞更容易获得编码上调逆转录子的基因组区域,逆转录酶抑制剂和 STING 或 cGAS 缺乏会降低妊娠小鼠而非非妊娠小鼠的脾脏造血干细胞、脾脏和骨髓红细胞祖细胞的频率以及红细胞计数。STING 是妊娠期脾脏造血干细胞表达 Ifna 和 IFN 调控基因的必要条件。与非妊娠妇女相比,妊娠妇女的血液造血干细胞表现出逆转录酶转录增加和 IFN 调节基因表达的变化,而且服用逆转录酶抑制剂的妊娠妇女(而非非妊娠妇女)会出现贫血,这表明这些机制是有保护作用的:科学 https://doi.org/10.1126/science.ado6836 (2024)
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pregnancy stress
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来源期刊
Nature Immunology
Nature Immunology 医学-免疫学
CiteScore
40.00
自引率
2.30%
发文量
248
审稿时长
4-8 weeks
期刊介绍: Nature Immunology is a monthly journal that publishes the highest quality research in all areas of immunology. The editorial decisions are made by a team of full-time professional editors. The journal prioritizes work that provides translational and/or fundamental insight into the workings of the immune system. It covers a wide range of topics including innate immunity and inflammation, development, immune receptors, signaling and apoptosis, antigen presentation, gene regulation and recombination, cellular and systemic immunity, vaccines, immune tolerance, autoimmunity, tumor immunology, and microbial immunopathology. In addition to publishing significant original research, Nature Immunology also includes comments, News and Views, research highlights, matters arising from readers, and reviews of the literature. The journal serves as a major conduit of top-quality information for the immunology community.
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