CAJ | 학술논문

哺乳动物细胞受到热休克、氧化应激、营养缺乏或者病毒感染等环境压力时，能够迅速启动细胞的压力应答机制，终止细胞内的蛋白翻译，在这个过程中，往往会形成应激颗粒。应激颗粒作为胞浆中终止活动的翻译起始复合物的聚集产物，在细胞的基因表达和内平衡中发挥着重要的作用。尤其是当病毒感染细胞时，应激颗粒的形成可以使细胞的蛋白翻译水平大大降低，从而抑制病毒的复制。然而在病毒的长期进化过程中，也衍生出了对抗细胞压力应答的相应机制，有些病毒甚至可以利用应激颗粒中包裹的沉默的转录本促进自身的复制。本文将着重就RNA病毒对应激颗粒的调控以及最近提出的压力应激与先天性免疫之间的关系做一综述。
포유동물세포수도열휴극、양화응격、영양결핍혹자병독감염등배경압력시，능구신속계동세포적압력응답궤제，종지세포내적단백번역，재저개과정중，왕왕회형성응격과립。응격과립작위포장중종지활동적번역기시복합물적취집산물，재세포적기인표체화내평형중발휘착중요적작용。우기시당병독감염세포시，응격과립적형성가이사세포적단백번역수평대대강저，종이억제병독적복제。연이재병독적장기진화과정중，야연생출료대항세포압력응답적상응궤제，유사병독심지가이이용응격과립중포과적침묵적전록본촉진자신적복제。본문장착중취RNA병독대응격과립적조공이급최근제출적압력응격여선천성면역지간적관계주일종술。
Stress granules (SGs) are reversible dynamic structures that rapidly form when mammalian cells encounter environmental stress like heat shock, oxidative, nutrient deprivation, or viral infection, which can reduce global translation rates. As the complexes of stalled translation factor, SGs play major roles in gene expression and homeostasis. When virus infects host cells, the formation of SGs can greatly reduce the level of protein translation, thereby inhibit viral replication. Yet simple viruses have evolved efficient means to resist the stress responses, some of them even can use the silent transcripts involved in SGs to increase their replication. This review covers the range of interactions between RNA viruses and SGs and discusses the newly described interactions between stress responses and innate immune responses.