Institute for Glycomics, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia.
Viruses. 2022 Dec 31;15(1):136. doi: 10.3390/v15010136.
Old world alphaviruses, such as Ross River virus (RRV), cause debilitating arthralgia during acute and chronic stages of the disease. RRV-induced cartilage degradation has been implicated as a cause of joint pain felt by RRV patients. Chondrocytes are a major cell type of cartilage and are involved in the production and maintenance of the cartilage matrix. It is thought that these cells may play a vital role in RRV disease pathogenesis. In this study, we used RNA-sequencing (RNA-Seq) to examine the transcriptomes of RRV-infected and bystander chondrocytes in the same environment. RRV containing green fluorescent protein (GFP) allowed for the separation of RRV-infected (GFP+) and bystander uninfected cells (GFP-). We found that whereas GFP+ and GFP- populations commonly presented similar gene expression profiles during infection, there were also unique signatures. For example, and were unique to GFP+ cells, whilst and were only found in bystander chondrocytes. This indicates that careful selection of potential therapeutic targets is important to minimise adverse effects to the neighbouring uninfected cell populations. Our study serves as a resource to provide more information about the pathways and responses elicited by RRV in cells which are both infected and stimulated because of neighbouring infected cells.
旧世界甲病毒,如罗斯河病毒(RRV),在疾病的急性和慢性阶段引起使人虚弱的关节炎。RRV 诱导的软骨降解被认为是 RRV 患者关节疼痛的原因。软骨细胞是软骨的主要细胞类型,参与软骨基质的产生和维持。人们认为这些细胞可能在 RRV 疾病发病机制中发挥重要作用。在这项研究中,我们使用 RNA 测序(RNA-Seq)来检查同一环境中 RRV 感染和旁观者软骨细胞的转录组。含有绿色荧光蛋白(GFP)的 RRV 允许分离 RRV 感染(GFP+)和旁观者未感染细胞(GFP-)。我们发现,虽然 GFP+和 GFP-群体在感染过程中通常表现出相似的基因表达谱,但也存在独特的特征。例如,和仅在 GFP+细胞中发现,而和仅在旁观者软骨细胞中发现。这表明,仔细选择潜在的治疗靶点对于减少对相邻未感染细胞群体的不良反应非常重要。我们的研究为提供更多关于 RRV 在感染和因相邻感染细胞而受到刺激的细胞中引发的途径和反应的信息提供了资源。