Hepatitis C virus infection of cholangiocarcinoma cell lines

Fletcher NF., Humphreys E., Jennings E., Osburn W., Lissauer S., Wilson GK., van IJzendoorn SCD., Baumert TF., Balfe P., Afford S., McKeating JA.

Hepatitis C virus (HCV) infects the liver and hepatocytes are the major cell type supporting viral replication. Hepatocytes and cholangiocytes derive from a common hepatic progenitor cell that proliferates during inflammatory conditions, raising the possibility that cholangiocytes may support HCV replication and contribute to the hepatic reservoir. We screened cholangiocytes along with a panel of cholangiocarcinoma-derived cell lines for their ability to support HCV entry and replication. While primary cholangiocytes were refractory to infection and lacked expression of several entry factors, two cholangiocarcinoma lines, CC-LP-1 and Sk-ChA-1, supported efficient HCV entry; furthermore, Sk-ChA-1 cells supported full virus replication. In vivo cholangiocarcinomas expressed all of the essential HCV entry factors; however, cholangiocytes adjacent to the tumour and in normal tissue showed a similar pattern of receptor expression to ex vivo isolated cholangiocytes, lacking SR-BI expression, explaining their inability to support infection. This study provides the first report that HCV can infect cholangiocarcinoma cells and suggests that these heterogeneous tumours may provide a reservoir for HCV replication in vivo.

DOI

10.1099/vir.0.000090

Type

Journal article

Publisher

Microbiology Society

Publication Date

2015-06-01T00:00:00+00:00

Volume

96

Pages

1380 - 1388

Total pages

8

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