Abstract
Chronic hepatitis B, C, and D virus (HBV, HCV, and HDV) infections are the leading causes of liver disease and cancer worldwide. Recently, the solute carrier and sodium taurocholate co-transporter NTCP has been identified as a receptor for HBV and HDV. Here, we uncover NTCP as a host factor regulating HCV infection. Using gain- and loss-of-function studies, we show that NTCP mediates HCV infection of hepatocytes and is relevant for cell-to-cell transmission. NTCP regulates HCV infection by augmenting the bile-acid-mediated repression of interferon-stimulated genes (ISGs), including IFITM3. In conclusion, our results uncover NTCP as a mediator of innate antiviral immune responses in the liver, and they establish a role for NTCP in the infection process of multiple viruses via distinct mechanisms. Collectively, our findings suggest a role for solute carriers in the regulation of innate antiviral responses, and they have potential implications for virus-host interactions and antiviral therapies.
Original language | English |
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Pages (from-to) | 1357-1368 |
Number of pages | 12 |
Journal | Cell Reports |
Volume | 17 |
Issue number | 5 |
DOIs | |
State | Published - 25 Oct 2016 |
Keywords
- NTCP
- antiviral therapy
- hepatitis B virus
- hepatitis C virus
- hepatitis D virus
- host factor
- innate immune responses
- signaling
- solute carrier
- viral entry