TY - JOUR KW - Computational models KW - Data integration KW - Lymphocyte differentiation KW - Lymphopoiesis KW - Software AU - Nadav Yayon AU - Veronika R. Kedlian AU - Lena Boehme AU - Chenqu Suo AU - Brianna T. Wachter AU - Rebecca T. Beuschel AU - Oren Amsalem AU - Krzysztof Polanski AU - Simon Koplev AU - Elizabeth Tuck AU - Emma Dann AU - Jolien Van Hulle AU - Shani Perera AU - Tom Putteman AU - Alexander V. Predeus AU - Monika Dabrowska AU - Laura Richardson AU - Catherine Tudor AU - Alexandra Y. Kreins AU - Justin Engelbert AU - Emily Stephenson AU - Vitalii Kleshchevnikov AU - Fabrizio De Rita AU - David Crossland AU - Marita Bosticardo AU - Francesca Pala AU - Elena Prigmore AU - Nana-Jane Chipampe AU - Martin Prete AU - Lijiang Fei AU - Ken To AU - Roger A. Barker AU - Xiaoling He AU - Filip Van Nieuwerburgh AU - Omer Ali Bayraktar AU - Minal Patel AU - E. Graham Davies AU - Muzlifah A. Haniffa AU - Virginie Uhlmann AU - Luigi D. Notarangelo AU - Ronald N. Germain AU - Andrea J. Radtke AU - John C. Marioni AU - Tom Taghon AU - Sarah A. Teichmann AB - T cells develop from circulating precursor cells, which enter the thymus and migrate through specialized subcompartments that support their maturation and selection1. In humans, this process starts in early fetal development and is highly active until thymic involution in adolescence. To map the microanatomical underpinnings of this process in pre- and early postnatal stages, we established a quantitative morphological framework for the thymus—the Cortico-Medullary Axis—and used it to perform a spatially resolved analysis. Here, by applying this framework to a curated multimodal single-cell atlas, spatial transcriptomics and high-resolution multiplex imaging data, we demonstrate establishment of the lobular cytokine network, canonical thymocyte trajectories and thymic epithelial cell distributions by the beginning of the the second trimester of fetal development. We pinpoint tissue niches of thymic epithelial cell progenitors and distinct subtypes associated with Hassall’s corpuscles and identify divergence in the timing of medullary entry between CD4 and CD8 T cell lineages. These findings provide a basis for a detailed understanding of T lymphocyte development and are complemented with a holistic toolkit for cross-platform imaging data analysis, annotation and OrganAxis construction (TissueTag), which can be applied to any tissue. BT - Nature DA - 2024-11 DO - 10.1038/s41586-024-07944-6 IS - 8039 LA - en N2 - T cells develop from circulating precursor cells, which enter the thymus and migrate through specialized subcompartments that support their maturation and selection1. In humans, this process starts in early fetal development and is highly active until thymic involution in adolescence. To map the microanatomical underpinnings of this process in pre- and early postnatal stages, we established a quantitative morphological framework for the thymus—the Cortico-Medullary Axis—and used it to perform a spatially resolved analysis. Here, by applying this framework to a curated multimodal single-cell atlas, spatial transcriptomics and high-resolution multiplex imaging data, we demonstrate establishment of the lobular cytokine network, canonical thymocyte trajectories and thymic epithelial cell distributions by the beginning of the the second trimester of fetal development. We pinpoint tissue niches of thymic epithelial cell progenitors and distinct subtypes associated with Hassall’s corpuscles and identify divergence in the timing of medullary entry between CD4 and CD8 T cell lineages. These findings provide a basis for a detailed understanding of T lymphocyte development and are complemented with a holistic toolkit for cross-platform imaging data analysis, annotation and OrganAxis construction (TissueTag), which can be applied to any tissue. PY - 2024 SP - 708 EP - 718 T2 - Nature TI - A spatial human thymus cell atlas mapped to a continuous tissue axis UR - https://www.nature.com/articles/s41586-024-07944-6 VL - 635 Y2 - 2024-11-26 SN - 1476-4687 ER -