Yolk sac macrophage progenitors traffic to the embryo during defined stages of development

C. Stremmel, R. Schuchert, F. Wagner, R. Thaler, T. Weinberger, R. Pick, E. Mass, H. C. Ishikawa-Ankerhold, A. Margraf, S. Hutter, R. Vagnozzi, S. Klapproth, J. Frampton, S. Yona, C. Scheiermann, J. D. Molkentin, U. Jeschke, M. Moser, M. Sperandio, S. Massberg, F. Geissmann and C. Schulz ()
Additional contact information
C. Stremmel: Ludwig-Maximilians-Universität
R. Schuchert: Ludwig-Maximilians-Universität
F. Wagner: Ludwig-Maximilians-Universität
R. Thaler: Ludwig-Maximilians-Universität
T. Weinberger: Ludwig-Maximilians-Universität
R. Pick: Ludwig-Maximilians-Universität
E. Mass: Memorial Sloan Kettering Cancer Center
H. C. Ishikawa-Ankerhold: Ludwig-Maximilians-Universität
A. Margraf: Ludwig-Maximilians-Universität
S. Hutter: Klinikum der Universität, Ludwig-Maximilians-Universität
R. Vagnozzi: Cincinnati Children’s Hospital Medical Center
S. Klapproth: Max Planck Institute of Biochemistry
J. Frampton: University of Birmingham
S. Yona: The Weizmann Institute of Science
C. Scheiermann: Ludwig-Maximilians-Universität
J. D. Molkentin: Cincinnati Children’s Hospital Medical Center
U. Jeschke: Klinikum der Universität, Ludwig-Maximilians-Universität
M. Moser: Max Planck Institute of Biochemistry
M. Sperandio: Ludwig-Maximilians-Universität
S. Massberg: Ludwig-Maximilians-Universität
F. Geissmann: Memorial Sloan Kettering Cancer Center
C. Schulz: Ludwig-Maximilians-Universität

Nature Communications, 2018, vol. 9, issue 1, 1-14

Abstract: Abstract Tissue macrophages in many adult organs originate from yolk sac (YS) progenitors, which invade the developing embryo and persist by means of local self-renewal. However, the route and characteristics of YS macrophage trafficking during embryogenesis are incompletely understood. Here we show the early migration dynamics of YS-derived macrophage progenitors in vivo using fate mapping and intravital microscopy. From embryonic day 8.5 (E8.5) CX3CR1+ pre-macrophages are present in the mouse YS where they rapidly proliferate and gain access to the bloodstream to migrate towards the embryo. Trafficking of pre-macrophages and their progenitors from the YS to tissues peaks around E10.5, dramatically decreases towards E12.5 and is no longer evident from E14.5 onwards. Thus, YS progenitors use the vascular system during a restricted time window of embryogenesis to invade the growing fetus. These findings close an important gap in our understanding of the development of the innate immune system.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-017-02492-2

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DOI: 10.1038/s41467-017-02492-2

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