Pianno: a probabilistic framework automating semantic annotation for spatial transcriptomics

Yuqiu Zhou, Wei He, Weizhen Hou and Ying Zhu ()
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Yuqiu Zhou: Fudan University
Wei He: Fudan University
Weizhen Hou: Fudan University
Ying Zhu: Fudan University

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Spatial transcriptomics has revolutionized the study of gene expression within tissues, while preserving spatial context. However, annotating spatial spots’ biological identity remains a challenge. To tackle this, we introduce Pianno, a Bayesian framework automating structural semantics annotation based on marker genes. Comprehensive evaluations underscore Pianno’s remarkable prowess in precisely annotating a wide array of spatial semantics, ranging from diverse anatomical structures to intricate tumor microenvironments, as well as in estimating cell type distributions, across data generated from various spatial transcriptomics platforms. Furthermore, Pianno, in conjunction with clustering approaches, uncovers a region- and species-specific excitatory neuron subtype in the deep layer 3 of the human neocortex, shedding light on cellular evolution in the human neocortex. Overall, Pianno equips researchers with a robust and efficient tool for annotating diverse biological structures, offering new perspectives on spatial transcriptomics data.

Date: 2024
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DOI: 10.1038/s41467-024-47152-4

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