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Novae: a graph-based foundation model for spatial transcriptomics data
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DOI：10.1038/s41592-025-02899-6.png)
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Abstract
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Spatial transcriptomics is advancing molecular biology by providing high-resolution insights into gene expression within the spatial context of tissues. This context is essential for identifying spatial domains, enabling the understanding of microenvironment organizations and their implications for tissue function and disease progression. To improve current model limitations on multiple slides, we have designed Novae (
https://github.com/MICS-Lab/novae
), a graph-based foundation model that extracts representations of cells within their spatial contexts. Our model was trained on a large dataset of nearly 30 million cells across 18 tissues, allowing Novae to perform zero-shot domain inference across multiple gene panels, tissues and technologies. Unlike other models, it also natively corrects batch effects and constructs a nested hierarchy of spatial domains. Furthermore, Novae supports various downstream tasks, including spatially variable gene or pathway analysis and spatial domain trajectory analysis. Overall, Novae provides a robust and versatile tool for advancing spatial transcriptomics and its applications in biomedical research. Novae, a self-supervised graph attention network, is a foundation model excelling at a diverse spectrum of spatial transcriptomics modeling and analysis tasks.
Keywords:
Spatial transcriptomics
Graph-based model
Gene expression
Spatial domains
Foundation model
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