Zhuang Xiaodong, Gallo Giulia, Sharma Parul, Ha Jiyeon, Magri Andrea, Borrmann Helene, Harris James M, Tsukuda Senko, Bentley Eleanor, Kirby Adam, de Neck Simon, Yang Hongbing, Balfe Peter, Wing Peter A C, Matthews David, Harris Adrian L, Kipar Anja, Stewart James P, Bailey Dalan, McKeating Jane A
Nuffield Department of Medicine, University of Oxford, Oxford, UK.
The Pirbright Institute, Guildford, Surrey, UK.
iScience. 2023 Dec 18;27(1):108763. doi: 10.1016/j.isci.2023.108763. eCollection 2024 Jan 19.
Respiratory syncytial virus (RSV) is a global healthcare problem, causing respiratory illness in young children and elderly individuals. Our knowledge of the host pathways that define susceptibility to infection and disease severity are limited. Hypoxia inducible factors (HIFs) define metabolic responses to low oxygen and regulate inflammatory responses in the lower respiratory tract. We demonstrate a role for HIFs to suppress RSV entry and RNA replication. We show that hypoxia and HIF prolyl-hydroxylase inhibitors reduce the expression of the RSV entry receptor nucleolin and inhibit viral cell-cell fusion. We identify a HIF regulated microRNA, miR-494, that regulates nucleolin expression. In RSV-infected mice, treatment with the clinically approved HIF prolyl-hydroxylase inhibitor, Daprodustat, reduced the level of infectious virus and infiltrating monocytes and neutrophils in the lung. This study highlights a role for HIF-signalling to limit multiple aspects of RSV infection and associated inflammation and informs future therapeutic approaches for this respiratory pathogen.
呼吸道合胞病毒(RSV)是一个全球性的医疗保健问题,可导致幼儿和老年人患上呼吸道疾病。我们对决定感染易感性和疾病严重程度的宿主途径的了解有限。缺氧诱导因子(HIFs)决定对低氧的代谢反应,并调节下呼吸道的炎症反应。我们证明了HIFs在抑制RSV进入和RNA复制方面的作用。我们表明,缺氧和HIF脯氨酰羟化酶抑制剂可降低RSV进入受体核仁素的表达,并抑制病毒细胞间融合。我们鉴定出一种受HIF调节的微小RNA,即miR-494,它调节核仁素的表达。在RSV感染的小鼠中,使用临床批准的HIF脯氨酰羟化酶抑制剂达普司他进行治疗,可降低肺中传染性病毒的水平以及浸润的单核细胞和中性粒细胞的数量。这项研究突出了HIF信号传导在限制RSV感染及相关炎症的多个方面所起的作用,并为针对这种呼吸道病原体的未来治疗方法提供了依据。