TY - JOUR KW - Cell biology KW - Computational biology and bioinformatics KW - Transcriptomics AU - Sam N. Barnett AU - Ana-Maria Cujba AU - Lu Yang AU - Ana Raquel Maceiras AU - Shuang Li AU - Veronika Kedlian AU - J. Patrick Pett AU - Krzysztof Polanski AU - Antonio M. A. Miranda AU - Chuan Xu AU - James Cranley AU - Kazumasa Kanemaru AU - Michael Lee AU - Lukas Mach AU - Shani Perera AU - Catherine Tudor AU - Philomeena D. Joseph AU - Sophie Pritchard AU - Rebecca Toscano-Rivalta AU - Kelvin Tuong AU - Liam Bolt AU - Robert Petryszak AU - Martin Prete AU - Batuhan Cakir AU - Alik Huseynov AU - Ioannis Sarropoulos AU - Rasheda A. Chowdhury AU - Rasa Elmentaite AU - Elo Madissoon AU - Amanda Oliver AU - Lia Campos AU - Agnieska Brazovskaja AU - Tomás Gomes AU - Barbara Treutlein AU - Chang N. Kim AU - Tomasz J. Nowakowski AU - Kerstin B. Meyer AU - Anna M. Randi AU - Michela Noseda AU - Sarah A. Teichmann AB - The human vascular system, comprising endothelial (EC) and mural cells, covers a vast surface area in the body, providing a critical interface between blood and tissue environments. Functional differences exist across specific vascular beds, but their molecular determinants across tissues remain largely unknown. Here, we integrated single-cell transcriptomics data from 19 human organs and tissues, and defined 42 vascular cell states from ~67,000 cells (62 donors), including angiotypic transitional signatures along the arterial endothelial axis from large to small calibre vessels. We also characterised organotypic populations, including splenic littoral ECs and blood-brain barrier cells, thus clarifying the molecular profiles of these important cell states. Interrogating endothelial-mural cell molecular crosstalk revealed angiotypic and organotypic communication pathways related to Notch, Wnt, retinoic acid, prostaglandin, and cell adhesion signalling. Transcription factor network analysis revealed differential regulation of downstream target genes in tissue-specific modules, such as FOXF1 target genes across multiple lung vascular subpopulations. Additionally, we make mechanistic inferences of vascular drug targets within different vascular beds. This open access resource enhances our understanding of angiodiversity and organotypic molecular signatures in human vascular cells and has therapeutic implications for vascular diseases across tissues. BT - Nature Medicine DA - 2024-11-20 DO - 10.1038/s41591-024-03376-x LA - en N2 - The human vascular system, comprising endothelial (EC) and mural cells, covers a vast surface area in the body, providing a critical interface between blood and tissue environments. Functional differences exist across specific vascular beds, but their molecular determinants across tissues remain largely unknown. Here, we integrated single-cell transcriptomics data from 19 human organs and tissues, and defined 42 vascular cell states from ~67,000 cells (62 donors), including angiotypic transitional signatures along the arterial endothelial axis from large to small calibre vessels. We also characterised organotypic populations, including splenic littoral ECs and blood-brain barrier cells, thus clarifying the molecular profiles of these important cell states. Interrogating endothelial-mural cell molecular crosstalk revealed angiotypic and organotypic communication pathways related to Notch, Wnt, retinoic acid, prostaglandin, and cell adhesion signalling. Transcription factor network analysis revealed differential regulation of downstream target genes in tissue-specific modules, such as FOXF1 target genes across multiple lung vascular subpopulations. Additionally, we make mechanistic inferences of vascular drug targets within different vascular beds. This open access resource enhances our understanding of angiodiversity and organotypic molecular signatures in human vascular cells and has therapeutic implications for vascular diseases across tissues. PY - 2024 SP - 1 EP - 1 T2 - Nature Medicine TI - An organotypic atlas of human vascular cells UR - https://www.nature.com/articles/s41591-024-03376-x Y2 - 2024-11-26 SN - 1546-170X ER -