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    Adult Langerhans cells derive predominantly from embryonic fetal liver monocytes with a minor contribution of yolk sac-derived macrophages.

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    Author
    Hoeffel, G; Wang, Y; Greter, M; See, P; Teo, P; Malleret, B; Leboeuf, M; Low, D; Oller, G; Almeida, F; ...
    Date
    2012-06-04
    Source Title
    Journal of Experimental Medicine
    Publisher
    Rockefeller University Press
    University of Melbourne Author/s
    de Almeida, Francisca
    Affiliation
    Medical Biology (W.E.H.I.)
    Metadata
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    Document Type
    Journal Article
    Citations
    Hoeffel, G., Wang, Y., Greter, M., See, P., Teo, P., Malleret, B., Leboeuf, M., Low, D., Oller, G., Almeida, F., Choy, S. H. Y., Grisotto, M., Renia, L., Conway, S. J., Stanley, E. R., Chan, J. K. Y., Ng, L. G., Samokhvalov, I. M., Merad, M. & Ginhoux, F. (2012). Adult Langerhans cells derive predominantly from embryonic fetal liver monocytes with a minor contribution of yolk sac-derived macrophages.. J Exp Med, 209 (6), pp.1167-1181. https://doi.org/10.1084/jem.20120340.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/253487
    DOI
    10.1084/jem.20120340
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3371735
    Abstract
    Langerhans cells (LCs) are the dendritic cells (DCs) of the epidermis, forming one of the first hematopoietic lines of defense against skin pathogens. In contrast to other DCs, LCs arise from hematopoietic precursors that seed the skin before birth. However, the origin of these embryonic precursors remains unclear. Using in vivo lineage tracing, we identify a first wave of yolk sac (YS)-derived primitive myeloid progenitors that seed the skin before the onset of fetal liver hematopoiesis. YS progenitors migrate to the embryo proper, including the prospective skin, where they give rise to LC precursors, and the brain rudiment, where they give rise to microglial cells. However, in contrast to microglia, which remain of YS origin throughout life, YS-derived LC precursors are largely replaced by fetal liver monocytes during late embryogenesis. Consequently, adult LCs derive predominantly from fetal liver monocyte-derived cells with a minor contribution of YS-derived cells. Altogether, we establish that adult LCs have a dual origin, bridging early embryonic and late fetal myeloid development.

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