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Einwächter, H.* ; Heiseke, A.* ; Schlitzer, A.* ; Gasteiger, G.* ; Adler, H. ; Voehringer, D.* ; Manz, M.G.* ; Ruzsics, Z.* ; Dölken, L.* ; Koszinowski, U.H.* ; Sparwasser, T.* ; Reindl, W.* ; Jordan, S.*

The innate immune response to infection induces erythropoietin-dependent replenishment of the dendritic cell compartment.

Front. Immunol. 11:1627 (2020)
Postprint Research data DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Dendritic cells (DC) play a key role in the adaptive immune response due to their ability to present antigens and stimulate naive T cells. Many bacteria and viruses can efficiently target DC, resulting in impairment of their immunostimulatory function or elimination. Hence, the DC compartment requires replenishment following infection to ensure continued operational readiness of the adaptive immune system. Here, we investigated the molecular and cellular mechanisms of inflammation-induced DC generation. We found that infection with viral and bacterial pathogens as well as Toll-like receptor 9 (TLR9) ligation with CpG-oligodeoxynucleotide (CpG-ODN) expanded an erythropoietin (EPO)-dependent TER119(+)CD11a(+)cell population in the spleen that had the capacity to differentiate into TER119(+)CD11c(high)and TER119(-)CD11c(high)cells bothin vitroandin vivo. TER119(+)CD11c(high)cells contributed to the conventional DC pool in the spleen and specifically increased in lymph nodes draining the site of local inflammation. Our results reveal a so far undescribed inflammatory EPO-dependent pathway of DC differentiation and establish a mechanistic link between innate immune recognition of potential immunosuppressive pathogens and the maintenance of the DC pool during and after infection.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Infection ; Inflammation ; Erythropoietin ; Dendritic Cell ; Extramedullary Hematopoiesis ; Ter119 ; Toll-like Receptor; High-dimensional Analysis; T-cells; Extramedullary Erythropoiesis; Bone-marrow; Cytomegalovirus; Hematopoiesis; Identification; Macrophages; Homeostasis; Recognizes
Language english
Publication Year 2020
HGF-reported in Year 2020
ISSN (print) / ISBN 1664-3224
e-ISSN 1664-3224
Quellenangaben Volume: 11, Issue: , Pages: , Article Number: 1627 Supplement: ,
Publisher Frontiers
Publishing Place Avenue Du Tribunal Federal 34, Lausanne, Ch-1015, Switzerland
Reviewing status Peer reviewed
POF-Topic(s) 30202 - Environmental Health
Research field(s) Lung Research
PSP Element(s) G-503100-005
Scopus ID 85089511733
PubMed ID 32849551
Erfassungsdatum 2020-09-15