单细胞RNA序列映射在小鼠同种异体心脏移植免疫细胞异质性
![Single-Cell RNA Sequencing of Immune Cells in Lymph Nodes Reveals the Presence of 11 Cell Clusters. A. Scheme of the overall study design. Single-cell RNA sequencing was applied to immune cells of lymph nodes derived from cardiac transplanted mice, and the output data were used for expression analyses. B. t-SNE projection of 7967 single immune cells (each point represents a single cell) in lymph nodes from syngeneic cardiac transplanted mice sharing similar transcriptome profiles, grouped by color according to unsupervised clustering results. C. Cluster map showing the assigned identity for each cluster defined in (B). D. Heatmap analysis with known gene expression profiles of T cells, B cells, DC cells, NK cells, and nuocytes. E. Top ten upregulated DEGs (ranked by log fold change) of each cluster in immune cells, plotted in a heatmap. F-I. t-SNE maps indicating the expression of selected well-established cellular markers in cell populations identified as (F), T cells, (G), B cells, (H), DC cells, and (I), NK cells. Credit: Cardiovascular Innovations and Applications (2023). DOI: 10.15212/CVIA.2023.0023 单细胞RNA序列映射在小鼠同种异体心脏移植免疫细胞异质性](https://scx1.b-cdn.net/csz/news/800a/2023/single-cell-rna-sequen.jpg)
免疫细胞发挥着重要作用在调节心脏移植后异体排斥和宽容。然而,免疫细胞异质性在单细胞水平和免疫细胞状态如何影响移植免疫,仍不完全的特征。
一项新研究的作者,发表在心血管的创新和应用程序,进行单细胞RNA序列(scRNA-seq)免疫细胞从一只老鼠LNs同源的和同种异体心脏移植模型。9 T细胞通过无监督方法确定集群。通路富集分析被用来探索功能细胞亚种群之间的区别和描述代谢T细胞的异质性。
免疫细胞的转录景观是确定,尤其是T细胞,和它们的代谢在LNs转录组鼠标心脏移植。分子和功能性质的基础上,我们还发现了T细胞类型与transplantation-associated免疫过程,包括细胞毒性CD8+传统的CD4 T细胞,激活+T细胞和功能失调的亚群。的贡献JunB Th17的感应细胞分化和限制Treg发展进一步阐明,作者发现,HIF-1a参与T细胞的代谢和功能。
第一个系统的单细胞分析T细胞内的转录变异人口呈现在这篇文章中,为新药的开发提供新的见解的同种异体移植物排斥反应。
更多信息:中华通et al,单细胞RNA序列映射在小鼠同种异体心脏移植免疫细胞异质性,心血管的创新和应用程序(2023)。DOI: 10.15212 / CVIA.2023.0023