4.8 Article

A machine learning approach to discover migration modes and transition dynamics of heterogeneous dendritic cells

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FRONTIERS IN IMMUNOLOGY
卷 14, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2023.1129600

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dendritic cell; cell migration; machine learning; transition dynamics; maturation

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Immature dendritic cells (imDCs) change their migratory modes frequently, while mature dendritic cells (mDCs) do not show directional transitions. This study provides new insights into the complex migratory behavior of dendritic cells and highlights the importance of migration mode transition and maturation-dependent motility changes.
Dendritic cell (DC) migration is crucial for mounting immune responses. Immature DCs (imDCs) reportedly sense infections, while mature DCs (mDCs) move quickly to lymph nodes to deliver antigens to T cells. However, their highly heterogeneous and complex innate motility remains elusive. Here, we used an unsupervised machine learning (ML) approach to analyze long-term, two-dimensional migration trajectories of Granulocyte-macrophage colony-stimulating factor (GMCSF)-derived bone marrow-derived DCs (BMDCs). We discovered three migratory modes independent of the cell state: slow-diffusive (SD), slow-persistent (SP), and fast-persistent (FP). Remarkably, imDCs more frequently changed their modes, predominantly following a unicyclic SD -> FP -> SP -> SD transition, whereas mDCs showed no transition directionality. We report that DC migration exhibits a history-dependent mode transition and maturation-dependent motility changes are emergent properties of the dynamic switching of the three migratory modes. Our ML-based investigation provides new insights into studying complex cellular migratory behavior.

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