SegJointGene: joint cell segmentation and spatial gene prioritization by information entropy guided convolutional neural networks

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ID: 318764
2026
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Abstract
MOTIVATION: Spatial sequencing technologies enable the single-cell-level study of molecular organization in tissues. Revealing such spatial patterns relies on accurate cell segmentation. In complex tissues with dense cell packing, segmentation based solely on nuclear staining is insufficient for accurate cell boundary detection. This limitation arises because accurate segmentation necessitates the delineation of cell morphology, which is driven by molecular activities such as cytoskeletal dynamics, cell-cell adhesion, and intercellular signaling. Thus, integrating molecular information, including gene or protein expression, has the potential to improve segmentation, but remains computationally challenging. RESULTS: To address this, we developed SegJointGene, a deep learning framework that jointly performs cell segmentation and spatial gene prioritization by integrating nuclei-based images with spatial gene or protein expression data. SegJointGene designs an information-entropy-guided convolutional neural network together with a computational information discarding score to identify genes that are important for cell-type-specific segmentation. The model iteratively refines gene prioritization and cell boundaries, producing convergent segmentation results along with prioritized spatial genes or proteins across cell types. We applied and benchmarked SegJointGene on both simulation and real spatial datasets, including spatial transcriptomics from the mouse hippocampus and distinct regions of the whole mouse brain, as well as spatial proteomics data from human tonsil. Across datasets, SegJointGene outperformed existing methods by 5-20% in accurately assigning molecular signals to cell boundaries. Robustness analyses further demonstrated stable performance across varying gene numbers and imaging resolutions. In addition, the genes prioritized by SegJointGene were enriched for structural, developmental, and synaptic signaling pathways, supporting their relevance to spatial tissue organization. AVAILABILITY: The source code and data are available at https://github.com/daifengwanglab/segjointgene. SUPPLEMENTARY INFORMATION: Supplementary figures, notes and data descriptions are available in Supplementalmaterials.pdf.
Reference Key
openalex_W7165941468 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Haotian Ma, Daifeng Wang
Journal BMC Bioinformatics
Year 2026
DOI
10.1093/bioinformatics/btag447
URL
https://doi.org/10.1093/bioinformatics/btag447
Keywords Keywords not found

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