A cell atlas of human thymic development defines T cell repertoire formation
Jong-Eun Park, Rachel A. Botting, Cecilia Domínguez Conde, Dorin-Mirel Popescu, Marieke Lavaert, Daniel J. Kunz, Issac Goh, Emily Stephenson, Roberta Ragazzini, Elizabeth Tuck, Anna Wilbrey-Clark, Kenny Roberts, Veronika R. Kedlian, John R. Ferdinand, Xiaoling He, Simone Webb, Daniel Maunder, Niels Vandamme, Krishnaa T. Mahbubani, Krzysztof Polański, Lira Mamanova, Liam Bolt, David Crossland, Fabrizio De Rita, Andrew Fuller, Andrew Filby, Gary Reynolds, David Dixon, Kourosh Saeb‐Parsy, Steven Lisgo, Deborah J. Henderson, Roser Vento‐Tormo, Omer Ali Bayraktar, Roger A. Barker, Kerstin B. Meyer, Yvan Saeys, Paola Bonfanti, Sam Behjati, Menna R. Clatworthy, Tom Taghon, Muzlifah Haniffa, Sarah A. Teichmann
Abstract
Thymus development, cell by cell The human thymus is the organ responsible for the maturation of many types of T cells, which are immune cells that protect us from infection. However, it is not well known how these cells develop with a full immune complement that contains the necessary variation to protect us from a variety of pathogens. By performing single-cell RNA sequencing on more than 250,000 cells, Park et al. examined the changes that occur in the thymus over the course of a human life. They found that development occurs in a coordinated manner among immune cells and with their developmental microenvironment. These data allowed for the creation of models of how T cells with different specific immune functions develop in humans. Science , this issue p. eaay3224