Dorin-Mirel Popescu, Rachel A Botting, Emily Stephenson, Kile Green, Simone Webb, Laura Jardine, Emily F Calderbank, Krzysztof Polanski, Issac Goh, Mirjana Efremova, Meghan Acres, Daniel Maunder, Peter Vegh, Yorick Gitton, Jong-Eun Park, Roser Vento-Tormo, Zhichao Miao, David Dixon, Rachel Rowell, David McDonald, James Fletcher, Elizabeth Poyner, Gary Reynolds, Michael Mather, Corina Moldovan, Lira Mamanova, Frankie Greig, Matthew D Young, Kerstin B Meyer, Steven Lisgo, Jaume Bacardit, Andrew Fuller, Ben Millar, Barbara Innes, Susan Lindsay, Michael J T Stubbington, Monika S Kowalczyk, Bo Li, Orr Ashenberg, Marcin Tabaka, Danielle Dionne, Timothy L Tickle, Michal Slyper, Orit Rozenblatt-Rosen, Andrew Filby, Peter Carey, Alexandra-Chlo�� Villani, Anindita Roy, Aviv Regev, Alain Ch��dotal, Irene Roberts, Berthold G��ttgens, Sam Behjati, Elisa Laurenti, Sarah A Teichmann, Muzlifah Haniffa
Author Information
Dorin-Mirel Popescu: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Rachel A Botting: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Emily Stephenson: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Kile Green: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Simone Webb: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Laura Jardine: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Emily F Calderbank: Department of Haematology and Wellcome and MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK.
Krzysztof Polanski: Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.
Issac Goh: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Definitive haematopoiesis in the fetal liver supports self-renewal and differentiation of haematopoietic stem cells and multipotent progenitors (HSC/MPPs) but remains poorly defined in humans. Here, using single-cell transcriptome profiling of approximately 140,000 liver and 74,000 skin, kidney and yolk sac cells, we identify the repertoire of human blood and immune cells during development. We infer differentiation trajectories from HSC/MPPs and evaluate the influence of the tissue microenvironment on blood and immune cell development. We reveal physiological erythropoiesis in fetal skin and the presence of mast cells, natural killer and innate lymphoid cell precursors in the yolk sac. We demonstrate a shift in the haemopoietic composition of fetal liver during gestation away from being predominantly erythroid, accompanied by a parallel change in differentiation potential of HSC/MPPs, which we functionally validate. Our integrated map of fetal liver haematopoiesis provides a blueprint for the study of paediatric blood and immune disorders, and a reference for harnessing the therapeutic potential of HSC/MPPs.