Myeloid Cells Restrict MCMV and Drive Stress- Induced Extramedullary Hematopoiesis through STAT1 (CROSBI ID 274648)
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Gawish, Riem ; Bulat, Tanja ; Biaggio, Mario ; Lassnig, Caroline ; Bago-Horvath, Zsuzsanna ; Macho-Maschler, Sabine ; Poelzl, Andrea ; Simonović, Natalija ; Prchal-Murphy, Michaela ; Rom, Rita ; Amenitsch, Lena ; Ferrarese, Luca ; Kornhoff, Juliana ; Lederer, Therese ; Svinka, Jasmin ; Eferl, Robert ; Bosmann, Markus ; Kalinke, Ulrich ; Stoiber, Dagmar ; Sexl, Veronika ; Krmpotić, Astrid ; Jonjić, Stipan ; Müller, Mathias ; Strobl, Birgit
engleski
Myeloid Cells Restrict MCMV and Drive Stress- Induced Extramedullary Hematopoiesis through STAT1
Cytomegalovirus (CMV) has a high prevalence worldwide, is often fatal for immunocompromised patients, and causes bone marrow suppression. Deficiency of signal transducer and activator of transcription 1 (STAT1) results in severely impaired antiviral immunity. We have used cell- type restricted deletion of Stat1 to determine the importance of myeloid cell activity for the defense against murine CMV (MCMV). We show that myeloid STAT1 limits MCMV burden and infection- associated pathology in the spleen but does not affect ultimate clearance of infection. Unexpectedly, we found an essential role of myeloid STAT1 in the induction of extramedullary hematopoiesis (EMH). The EMH- promoting function of STAT1 was not restricted to MCMV infection but was also observed during CpG oligodeoxynucleotide-induced sterile inflammation. Collectively, we provide genetic evidence that signaling through STAT1 in myeloid cells is required to restrict MCMV at early time points post-infection and to induce compensatory hematopoiesis in the spleen.
monocytes signal transducer and activator of transcription Herpesviridae IFN-I receptor IFN-II receptor IL-27 receptor TLR9 agonist
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