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Characterization of cell fate probabilities in single-cell data with Palantir
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Characterization of cell fate probabilities in single-cell data with Palantir
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Journal Article
Characterization of cell fate probabilities in single-cell data with Palantir
2019
Overview
Single-cell RNA sequencing studies of differentiating systems have raised fundamental questions regarding the discrete versus continuous nature of both differentiation and cell fate. Here we present Palantir, an algorithm that models trajectories of differentiating cells by treating cell fate as a probabilistic process and leverages entropy to measure cell plasticity along the trajectory. Palantir generates a high-resolution pseudo-time ordering of cells and, for each cell state, assigns a probability of differentiating into each terminal state. We apply our algorithm to human bone marrow single-cell RNA sequencing data and detect important landmarks of hematopoietic differentiation. Palantir’s resolution enables the identification of key transcription factors that drive lineage fate choice and closely track when cells lose plasticity. We show that Palantir outperforms existing algorithms in identifying cell lineages and recapitulating gene expression trends during differentiation, is generalizable to diverse tissue types, and is well-suited to resolving less-studied differentiating systems.
Palantir uses single-cell RNA-seq data to generate continuous models of differentiation, infer developmental trajectories, and calculate the probabilities of cell fate choices.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ Animals
/ Biomedical and Life Sciences
/ Biomedical Engineering/Biotechnology
/ Bone Marrow Cells - cytology
/ Bone Marrow Cells - metabolism
/ Cell Differentiation - genetics
/ Entropy
/ Gene Expression Regulation, Developmental
/ Humans
/ Mice
/ RNA
/ Sequence Analysis, RNA - statistics & numerical data
