1. TANK-binding kinase 1-dependent or -independent signaling elicits the cell-type-specific innate immune responses induced by the adenovirus vector
- Author
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Masashi Tachibana, Shizuo Akira, Masahisa Hemmi, Hiroyuki Mizuguchi, Sayaka Tsuzuki, Tomoko Yamaguchi, Masaki Shoji, Fuminori Sakurai, Kouji Kobiyama, Kenji Kawabata, and Ken Ishii
- Subjects
0301 basic medicine ,viruses ,animal diseases ,medicine.medical_treatment ,Genetic Vectors ,Immunology ,Protein Serine-Threonine Kinases ,Biology ,medicine.disease_cause ,Adenoviridae ,Viral vector ,Mice ,03 medical and health sciences ,Immune system ,TANK-binding kinase 1 ,medicine ,Animals ,Immunology and Allergy ,Cells, Cultured ,Mice, Knockout ,Innate immune system ,Dendritic Cells ,General Medicine ,Fibroblasts ,Immunity, Innate ,Cell biology ,Mice, Inbred C57BL ,030104 developmental biology ,Cytokine ,Liver ,Organ Specificity ,DNA, Viral ,Interferon Type I ,Signal transduction ,Spleen ,Interferon type I ,Signal Transduction ,medicine.drug - Abstract
Adenovirus vectors (Adv) elicit innate immune responses via several pattern-recognition receptors. Although it has been suggested that various Adv-induced mechanisms play important roles in the induction of innate immunity in vitro , the impacts of these mechanisms in vivo remain unclear. Viral nucleic acids elicit innate immune responses through the recognition of cytosolic nucleic acid sensors and transduce intracellular signals to TANK-binding kinase (TBK) 1. In this study, to determine the impacts of viral nucleic acids on innate immune responses in vivo , we administered transgene-expressing Adv to Tbk1 -deficient mice. The systemic Adv administration failed to induce type I interferons (type I IFNs) in the spleen, but not the liver, of Tbk1 -deficient mice, resulting in the increase of transgene-expressing cells in the spleen, but not the liver. Moreover, Adv failed to induce type I IFNs in the bone-marrow-derived dendritic cells, but not the mouse embryonic fibroblasts, from Tbk1 -deficient mice in vitro . These results support the idea that Adv elicit innate immunity in immune cells and non-immune cells in a TBK1-dependent and TBK1-independent manner, respectively.
- Published
- 2015