Abstract:
:Infections can result in a temporarily restricted unresponsiveness of the innate immune response, thereby limiting pathogen control. Mechanisms of such unresponsiveness are well studied in lipopolysaccharide tolerance; however, whether mechanisms of tolerance limit innate immunity during virus infection remains unknown. Here, we find that infection with the highly cytopathic vesicular stomatitis virus (VSV) leads to innate anergy for several days. Innate anergy is associated with induction of apoptotic cells, which activates the Tyro3, Axl, and Mertk (TAM) receptor Mertk and induces high levels of interleukin-10 (IL-10) and transforming growth factor β (TGF-β). Lack of Mertk in Mertk-/- mice prevents induction of IL-10 and TGF-β, resulting in abrogation of innate anergy. Innate anergy is associated with enhanced VSV replication and poor survival after infection. Mechanistically, Mertk signaling upregulates suppressor of cytokine signaling 1 (SOCS1) and SOCS3. Dexamethasone treatment upregulates Mertk and enhances innate anergy in a Mertk-dependent manner. In conclusion, we identify Mertk as one major regulator of innate tolerance during infection with VSV.
journal_name
Cell Repjournal_title
Cell reportsauthors
Adomati T,Cham LB,Hamdan TA,Bhat H,Duhan V,Li F,Ali M,Lang E,Huang A,Naser E,Khairnar V,Friedrich SK,Lang J,Friebus-Kardash J,Bergerhausen M,Schiller M,Machlah YM,Lang F,Häussinger D,Ferencik S,Hardt C,Lang PA,doi
10.1016/j.celrep.2020.02.101subject
Has Abstractpub_date
2020-03-17 00:00:00pages
3671-3681.e5issue
11issn
2211-1247pii
S2211-1247(20)30275-8journal_volume
30pub_type
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