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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hou, Lifei Soong, Lynn Desai, Mayura Liang, Yuejin Jie, Zuliang Sun, Jiaren Wang, Tian |
| Description | Country affiliation: United States Author Affiliation: Hou L ( Department of Microbiology and Immunology, Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA.) |
| Abstract | This study was conducted to examine the interactions among the innate and adaptive immune components of the liver parenchyma during acute viral hepatitis. Mice were i.v. infected with a recombinant adenovirus, and within the first 24 h of infection, we found a transient but significant accumulation of IL-17 and IL-23 in the liver. In vivo neutralization of these interleukins alleviated the liver injury. Further investigations showed that IL-17 neutralization halted the intrahepatic accumulation of CTLs and Th1 cells. A majority of the IL-17-producing cells in the liver were γδ T cells. Additionally, intrahepatic IL-17(+) γδ T cells, but not the IFN-γ(+) ones, preferentially expressed IL-7R (CD127) on their surface, which coincided with an elevation of hepatocyte-derived IL-7 at 12 h postinfection. IL-7R blockade in vivo severely impeded the expansion of IL-17-producing cells after viral infection. In vitro, IL-7 synergized with IL-23 and directly stimulated IL-17 production from γδ T cells in response to TCRγδ stimulation. Finally, type I IFN (IFN-I) signaling was found to be critical for hepatic IL-7 induction. Collectively, these results showed that the IFN-I/IL-7/IL-17 cascade was important in priming T cell responses in the liver. Moreover, the highly coordinated cross talk among hepatocytes and innate and adaptive immune cells played a critical role in anti-viral immunity in hepatitis. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1201970 |
| Journal | The Journal of Immunology |
| Issue Number | 2 |
| Volume Number | 190 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2013-01-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Adaptive Immunity Hepatitis, Viral, Animal Immunology Metabolism Interleukin-17 Biosynthesis Liver T-lymphocytes Animals Pathology Hepatocytes Interferon Type I Interleukin-23 Interleukin-7 Mice Mice, Knockout Receptors, Antigen, T-cell, Gamma-delta Signal Transduction T-lymphocyte Subsets Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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