TY - JOUR KW - Angiogenesis KW - Computational biology and bioinformatics KW - induced pluripotent stem cells KW - Microglial cells KW - Morphogenesis AU - Nusayhah Hudaa Gopee AU - Elena Winheim AU - Bayanne Olabi AU - Chloe Admane AU - April Rose Foster AU - Ni Huang AU - Rachel A. Botting AU - Fereshteh Torabi AU - Dinithi Sumanaweera AU - Anh Phuong Le AU - Jin Kim AU - Luca Verger AU - Emily Stephenson AU - Diana Adão AU - Clarisse Ganier AU - Kelly Y. Gim AU - Sara A. Serdy AU - CiCi Deakin AU - Issac Goh AU - Lloyd Steele AU - Karl Annusver AU - Mohi-Uddin Miah AU - Win Min Tun AU - Pejvak Moghimi AU - Kwasi Amoako Kwakwa AU - Tong Li AU - Daniela Basurto Lozada AU - Ben Rumney AU - Catherine L. Tudor AU - Kenny Roberts AU - Nana-Jane Chipampe AU - Keval Sidhpura AU - Justin Englebert AU - Laura Jardine AU - Gary Reynolds AU - Antony Rose AU - Vicky Rowe AU - Sophie Pritchard AU - Ilaria Mulas AU - James Fletcher AU - Dorin-Mirel Popescu AU - Elizabeth Poyner AU - Anna Dubois AU - Alyson Guy AU - Andrew Filby AU - Steven Lisgo AU - Roger A. Barker AU - Ian A. Glass AU - Jong-Eun Park AU - Roser Vento-Tormo AU - Marina Tsvetomilova Nikolova AU - Peng He AU - John E. G. Lawrence AU - Josh Moore AU - Stephane Ballereau AU - Christine B. Hale AU - Vijaya Shanmugiah AU - David Horsfall AU - Neil Rajan AU - John A. McGrath AU - Edel A. O’Toole AU - Barbara Treutlein AU - Omer Bayraktar AU - Maria Kasper AU - Fränze Progatzky AU - Pavel Mazin AU - Jiyoon Lee AU - Laure Gambardella AU - Karl R. Koehler AU - Sarah A. Teichmann AU - Muzlifah Haniffa AB - Human prenatal skin is populated by innate immune cells, including macrophages, but whether they act solely in immunity or have additional functions in morphogenesis is unclear. Here we assembled a comprehensive multi-omics reference atlas of prenatal human skin (7–17 post-conception weeks), combining single-cell and spatial transcriptomics data, to characterize the microanatomical tissue niches of the skin. This atlas revealed that crosstalk between non-immune and immune cells underpins the formation of hair follicles, is implicated in scarless wound healing and is crucial for skin angiogenesis. We systematically compared a hair-bearing skin organoid (SkO) model derived from human embryonic stem cells and induced pluripotent stem cells to prenatal and adult skin1. The SkO model closely recapitulated in vivo skin epidermal and dermal cell types during hair follicle development and expression of genes implicated in the pathogenesis of genetic hair and skin disorders. However, the SkO model lacked immune cells and had markedly reduced endothelial cell heterogeneity and quantity. Our in vivo prenatal skin cell atlas indicated that macrophages and macrophage-derived growth factors have a role in driving endothelial development. Indeed, vascular network remodelling was enhanced following transfer of autologous macrophages derived from induced pluripotent stem cells into SkO cultures. Innate immune cells are therefore key players in skin morphogenesis beyond their conventional role in immunity, a function they achieve through crosstalk with non-immune cells. BT - Nature DA - 2024-11 DO - 10.1038/s41586-024-08002-x IS - 8039 LA - en N2 - Human prenatal skin is populated by innate immune cells, including macrophages, but whether they act solely in immunity or have additional functions in morphogenesis is unclear. Here we assembled a comprehensive multi-omics reference atlas of prenatal human skin (7–17 post-conception weeks), combining single-cell and spatial transcriptomics data, to characterize the microanatomical tissue niches of the skin. This atlas revealed that crosstalk between non-immune and immune cells underpins the formation of hair follicles, is implicated in scarless wound healing and is crucial for skin angiogenesis. We systematically compared a hair-bearing skin organoid (SkO) model derived from human embryonic stem cells and induced pluripotent stem cells to prenatal and adult skin1. The SkO model closely recapitulated in vivo skin epidermal and dermal cell types during hair follicle development and expression of genes implicated in the pathogenesis of genetic hair and skin disorders. However, the SkO model lacked immune cells and had markedly reduced endothelial cell heterogeneity and quantity. Our in vivo prenatal skin cell atlas indicated that macrophages and macrophage-derived growth factors have a role in driving endothelial development. Indeed, vascular network remodelling was enhanced following transfer of autologous macrophages derived from induced pluripotent stem cells into SkO cultures. Innate immune cells are therefore key players in skin morphogenesis beyond their conventional role in immunity, a function they achieve through crosstalk with non-immune cells. PY - 2024 SP - 679 EP - 689 T2 - Nature TI - A prenatal skin atlas reveals immune regulation of human skin morphogenesis UR - https://www.nature.com/articles/s41586-024-08002-x VL - 635 Y2 - 2024-11-26 SN - 1476-4687 ER -