期刊
IMMUNOGENETICS
卷 69, 期 7, 页码 439-450出版社
SPRINGER
DOI: 10.1007/s00251-017-1002-x
关键词
Innate lymphoid cells; Single-cell RNA-Seq; Immune cell type evolution; Immunogenomics; Cell type predictions
资金
- Ludwig Institute for Cancer Research (LICR)
- Center for Advanced Modeling Science (CADMOS)
- SystemsX (MelamonX grant)
- Swiss National Science Foundation (Ambizione Fellowship) [PZOOP3_161459]
Innate lymphoid cells (ILCs) consist of natural killer (NK) cells and non-cytotoxic ILCs that are broadly classified into ILC1, ILC2, and ILC3 subtypes. These cells recently emerged as important early effectors of innate immunity for their roles in tissue homeostasis and inflammation. Over the last few years, ILCs have been extensively studied in mouse and human at the functional and molecular level, including gene expression profiling. However, sorting ILCs with flow cytometry for gene expression analysis is a delicate and time-consuming process. Here we propose and validate a novel framework for studying ILCs at the transcriptomic level using single-cell RNA-Seq data. Our approach combines unsupervised clustering and a new cell type classifier trained on mouse ILC gene expression data. We show that this approach can accurately identify different ILCs, especially ILC2 cells, in human lymphocyte single-cell RNA-Seq data. Our new model relies only on genes conserved across vertebrates, thereby making it in principle applicable in any vertebrate species. Considering the rapid increase in throughput of single-cell RNA-Seq technology, our work provides a computational framework for studying ILC2 cells in single-cell transcriptomic data and may help exploring their conservation in distant vertebrate species.
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