Dissecting transition cells from single-cell transcriptome data through multiscale stochastic dynamics

Peijie Zhou, Shuxiong Wang, Tiejun Li () and Qing Nie ()
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Peijie Zhou: Peking University
Shuxiong Wang: University of California, Irvine
Tiejun Li: Peking University
Qing Nie: University of California, Irvine

Nature Communications, 2021, vol. 12, issue 1, 1-15

Abstract: Abstract Advances in single-cell technologies allow scrutinizing of heterogeneous cell states, however, detecting cell-state transitions from snap-shot single-cell transcriptome data remains challenging. To investigate cells with transient properties or mixed identities, we present MuTrans, a method based on multiscale reduction technique to identify the underlying stochastic dynamics that prescribes cell-fate transitions. By iteratively unifying transition dynamics across multiple scales, MuTrans constructs the cell-fate dynamical manifold that depicts progression of cell-state transitions, and distinguishes stable and transition cells. In addition, MuTrans quantifies the likelihood of all possible transition trajectories between cell states using coarse-grained transition path theory. Downstream analysis identifies distinct genes that mark the transient states or drive the transitions. The method is consistent with the well-established Langevin equation and transition rate theory. Applying MuTrans to datasets collected from five different single-cell experimental platforms, we show its capability and scalability to robustly unravel complex cell fate dynamics induced by transition cells in systems such as tumor EMT, iPSC differentiation and blood cell differentiation. Overall, our method bridges data-driven and model-based approaches on cell-fate transitions at single-cell resolution.

Date: 2021
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DOI: 10.1038/s41467-021-25548-w

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