Thymic myeloid cells are heterogenous and include a novel population of transitional dendritic cells

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10505726" target="_blank" >RIV/00216208:11310/25:10505726 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VyfMR76O9Y" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VyfMR76O9Y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1084/jem.20250733" target="_blank" >10.1084/jem.20250733</a>

Result language
angličtina
Original language name
Thymic myeloid cells are heterogenous and include a novel population of transitional dendritic cells
Original language description
Myeloid cells, including dendritic cells (DCs) and macrophages, are essential for establishing central tolerance in the thymus by promoting T cell clonal deletion and regulatory T cell (Treg) generation. Previous studies suggest that the thymic DC pool consists of plasmacytoid DC (pDC), XCR1(+) DC1, and SIRPα(+) DC2. Yet the precise origin, development, and homeostasis, particularly of DC2, remain unresolved. Using single-cell transcriptomics and lineage-defining mouse models, we identify nine major populations of thymic myeloid cells and describe their lineage identities. What was previously considered to be "DC2" is actually composed of four distinct cell lineages. Among these are monocyte-derived DCs (moDCs) and monocyte-derived macrophages (moMacs), which are dependent on thymic IFN to upregulate MHCII and CD11c. We further demonstrate that conventional DC2 undergo intrathymic maturation through CD40 signaling. Finally, amongst DC2, we identify a novel thymic population of CX3CR1(+) transitional DC (tDC), which represents transendothelial DCs positioned near thymic microvessels. Together, these findings reveal the thymus as a niche for diverse, developmentally distinct myeloid cells and elucidate their specific requirements for development and maturation.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
30102 - Immunology

Project
<a href="/en/project/GM25-16606M" target="_blank" >GM25-16606M: Inflammation Related Transitional Dendritic Cells as Key Players in T Cell Tolerance</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)