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Segmentation-free integration of nuclei morphology and spatial transcriptomics for retinal images

8 Feb 2025arXiv:2502.13974archive 2025-07-28

Eduard Chelebian, Pratiti Dasgupta, Zainalabedin Samadi, Carolina Wählby, Amjad Askary

This study introduces SEFI (SEgmentation-Free Integration), a novel method for integrating morphological features of cell nuclei with spatial transcriptomics data. Cell segmentation poses a significant challenge in the analysis of spatial transcriptomics data, as tissue-specific structural complexities and densely packed cells in certain regions make it difficult to develop a universal approach. SEFI addresses this by utilizing self-supervised learning to extract morphological features from fluorescent nuclear staining images, enhancing the clustering of gene expression data without requiring segmentation. We demonstrate SEFI on spatially resolved gene expression profiles of the developing retina, acquired using multiplexed single molecule Fluorescence In Situ Hybridization (smFISH). SEFI is publicly available at https://github.com/eduardchelebian/sefi.

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Cell SegmentationSegmentationSelf-Supervised Learning

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