| First Author | Soberman RJ | Year | 2012 |
| Journal | PLoS One | Volume | 7 |
| Issue | 10 | Pages | e47740 |
| PubMed ID | 23082204 | Mgi Jnum | J:192198 |
| Mgi Id | MGI:5464162 | Doi | 10.1371/journal.pone.0047740 |
| Citation | Soberman RJ, et al. (2012) CD200R1 supports HSV-1 viral replication and licenses pro-inflammatory signaling functions of TLR2. PLoS One 7(10):e47740 |
| abstractText | The CD200R1:CD200 axis is traditionally considered to limit tissue inflammation by down-regulating pro-inflammatory signaling in myeloid cells bearing the receptor. We generated CD200R1(-/-) mice and employed them to explore both the role of CD200R1 in regulating macrophage signaling via TLR2 as well as the host response to an in vivo, TLR2-dependent model, herpes simplex virus 1 (HSV-1) infection. CD200R1(-/-) peritoneal macrophages demonstrated a 70-75% decrease in the generation of IL-6 and CCL5 (Rantes) in response to the TLR2 agonist Pam(2)CSK(4) and to HSV-1. CD200R1(-/-) macrophages could neither up-regulate the expression of TLR2, nor assemble a functional inflammasome in response to HSV-1. CD200R1(-/-) mice were protected from HSV-1 infection and exhibited dysfunctional TLR2 signaling. Finally, both CD200R1(-/-) mice and CD200R1(-/-) fibroblasts and macrophages showed a markedly reduced ability to support HSV-1 replication. In summary, our data demonstrate an unanticipated and novel requirement for CD200R1 in "licensing" pro-inflammatory functions of TLR2 and in limiting viral replication that are supported by ex vivo and in vivo evidence. |
