Abstract
ABSTRACTProbing cellular population diversity at single-cell resolution became possible only in recent years. The popularity of single-cell ‘omic’ approaches, which allow researchers to dissect sample heterogeneity and cell-to-cell variation, continues to grow. With continuous technological improvements, single-cell omics are becoming increasingly prevalent and contribute to the discovery of new and rare cell types, and to the deciphering of disease pathogenesis and outcome. Animal models of human diseases have significantly facilitated our understanding of the mechanisms driving pathologies and resulted in the development of more efficient therapies. The application of single-cell omics to animal models improves the precision of the obtained insights, and brings single-cell technology closer to the clinical field. This Review focuses on the use of single-cell omics in cellular and animal models of diseases, as well as in samples from human patients. It also highlights the potential of these approaches to further improve the diagnosis and treatment of various pathologies, and includes a discussion of the advantages and remaining challenges in implementing these technologies into clinical practice.
Highlights
Human body tissues are heterogeneous environments composed of numerous types of cells with unique functions and at various stages of differentiation
Et al, 2018; Svensson et al, 2018) and are not covered here. The aim of this Review is to summarise the current applications of single-cell omics in model organisms and in humans, and to highlight the potential of these approaches for improving the diagnosis and treatment of diseases
Single-cell DNA sequencing allows researchers to study the genetic alterations of rare cell types, such as cancer stem cells (CSCs; Box 1), which are important for tumour relapse and would otherwise be overlooked by traditional, bulk analyses (Liu et al, 2017)
Summary
Human body tissues are heterogeneous environments composed of numerous types of cells with unique functions and at various stages of differentiation. Single-cell DNA sequencing allows researchers to study the genetic alterations of rare cell types, such as cancer stem cells (CSCs; Box 1), which are important for tumour relapse and would otherwise be overlooked by traditional, bulk analyses (Liu et al, 2017). Technological advances and a wide adoption of scRNA-seq approaches have shifted the application of this method from descriptive analyses of cell heterogeneity towards the understanding of disease mechanisms.
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