4.6 Article

CytoTree: an R/Bioconductor package for analysis and visualization of flow and mass cytometry data

Journal

BMC BIOINFORMATICS
Volume 22, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12859-021-04054-2

Keywords

Flow cytometry; Mass cytometry; Single-cell; Tree; Pseudotime

Funding

  1. National Key Research and Development Plan of China [2018YFA0107802]
  2. National Natural Science Foundation of China (NSFC) General Program [81570122, 81670094, 81770205, 81830007]
  3. National Key Research and Development Program [2016YFC0902800]
  4. Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Grant Support [20161303]
  5. Shanghai Rising-Star Program [20QC1400100]
  6. Shanghai Collaborative Innovation Program on Regenerative Medicine and Stem Cell Research [2019CXJQ01]
  7. Mayo Clinic Center for Individualized Medicine

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CytoTree is a versatile tool for analyzing multidimensional flow and mass cytometry data, providing various computational functionalities and supporting the construction of tree-shaped trajectories. Its practical utility is demonstrated through several examples of mass cytometry and time-course flow cytometry data.
BackgroundThe rapidly increasing dimensionality and throughput of flow and mass cytometry data necessitate new bioinformatics tools for analysis and interpretation, and the recently emerging single-cell-based algorithms provide a powerful strategy to meet this challenge.ResultsHere, we present CytoTree, an R/Bioconductor package designed to analyze and interpret multidimensional flow and mass cytometry data. CytoTree provides multiple computational functionalities that integrate most of the commonly used techniques in unsupervised clustering and dimensionality reduction and, more importantly, support the construction of a tree-shaped trajectory based on the minimum spanning tree algorithm. A graph-based algorithm is also implemented to estimate the pseudotime and infer intermediate-state cells. We apply CytoTree to several examples of mass cytometry and time-course flow cytometry data on heterogeneity-based cytology and differentiation/reprogramming experiments to illustrate the practical utility achieved in a fast and convenient manner.ConclusionsCytoTree represents a versatile tool for analyzing multidimensional flow and mass cytometry data and to producing heuristic results for trajectory construction and pseudotime estimation in an integrated workflow.

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