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Deep learning-based high-resolution time inference for deciphering dynamic gene regulation from fixed embryos

Author

Listed:
  • Huihan Bao

    (Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Shihe Zhang

    (Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Zhiyang Yu

    (Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

  • Heng Xu

    (Shanghai Jiao Tong University
    Shanghai Jiao Tong University)

Abstract

Embryo development is driven by the spatiotemporal dynamics of complex gene regulatory networks. Uncovering these dynamics requires simultaneous tracking of multiple fluctuating molecular species over time, which exceeds the capabilities of traditional live-imaging approaches. Fixed-embryo imaging offers the necessary sensitivity and capacity but lacks temporal resolution. Here, we present a multi-scale ensemble deep learning approach to precisely infer absolute developmental time with 1-minute resolution from nuclear morphology in fixed Drosophila embryo images. Applying this approach to quantitative imaging of fixed wild-type embryos, we resolve the spatiotemporal regulation of the endogenous segmentation gene Krüppel (Kr) by multiple transcription factors (TFs) during early development without genetic modification. Integrating a time-resolved theoretical model of single-molecule mRNA statistics, we further uncover the unsteady-state bursty kinetics of the endogenous segmentation gene, hunchback (hb), driven by dynamic TF binding. Our method provides a versatile framework for deciphering complex gene network dynamics in genetically unmodified organisms.

Suggested Citation

  • Huihan Bao & Shihe Zhang & Zhiyang Yu & Heng Xu, 2025. "Deep learning-based high-resolution time inference for deciphering dynamic gene regulation from fixed embryos," Nature Communications, Nature, vol. 16(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-61907-7
    DOI: 10.1038/s41467-025-61907-7
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