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Recruitment and activation of a lipid kinase by Hepatitis C virus NS5A is essential for integrity of the membranous replication compartment

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Hepatitis C virus (HCV) is a major causative agent of chronic liver disease in humans. To gain insight into host factor requirements for HCV replication, we performed a siRNA screen of the human kinome and identified 13 different kinases, including phosphatidylinositol-4 kinase III alpha (PI4KIIIα),...

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Main Authors: Reiss, Simon (Author) , Rebhan, Ilka (Author) , Backes, Perdita (Author) , Romero-Brey, Inés (Author) , Erfle, Holger (Author) , Matula, Petr (Author) , Kaderali, Lars (Author) , Pönisch, Marion (Author) , Blankenburg, Hagen (Author) , Hiet, Marie-Sophie (Author) , Longerich, Thomas (Author) , Diehl, Sarah (Author) , Ramirez, Fidel (Author) , Balla, Tamas (Author) , Rohr, Karl (Author) , Kaul, Artur (Author) , Bühler, Sandra (Author) , Pepperkok, Rainer (Author) , Lengauer, Thomas (Author) , Albrecht, Mario (Author) , Eils, Roland (Author) , Schirmacher, Peter (Author) , Lohmann, Volker (Author) , Bartenschlager, Ralf (Author)
Format: Article (Journal)
Language:English
Published: 19 January 2011
In: Cell host and microbe
Year: 2011, Volume: 9, Issue: 1, Pages: 32-45
ISSN:1934-6069
DOI:10.1016/j.chom.2010.12.002
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.chom.2010.12.002
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S1931312810004129
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Author Notes:Simon Reiss, Ilka Rebhan, Perdita Backes, Ines Romero-Brey, Holger Erfle, Petr Matula, Lars Kaderali, Marion Poenisch, Hagen Blankenburg, Marie-Sophie Hiet, Thomas Longerich, Sarah Diehl, Fidel Ramirez, Tamas Balla, Karl Rohr, Artur Kaul, Sandra Bühler, Rainer Pepperkok, Thomas Lengauer, Mario Albrecht, Roland Eils, Peter Schirmacher, Volker Lohmann, and Ralf Bartenschlager
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Summary:Hepatitis C virus (HCV) is a major causative agent of chronic liver disease in humans. To gain insight into host factor requirements for HCV replication, we performed a siRNA screen of the human kinome and identified 13 different kinases, including phosphatidylinositol-4 kinase III alpha (PI4KIIIα), as being required for HCV replication. Consistent with elevated levels of the PI4KIIIα product phosphatidylinositol-4-phosphate (PI4P) detected in HCV-infected cultured hepatocytes and liver tissue from chronic hepatitis C patients, the enzymatic activity of PI4KIIIα was critical for HCV replication. Viral nonstructural protein 5A (NS5A) was found to interact with PI4KIIIα and stimulate its kinase activity. The absence of PI4KIIIα activity induced a dramatic change in the ultrastructural morphology of the membranous HCV replication complex. Our analysis suggests that the direct activation of a lipid kinase by HCV NS5A contributes critically to the integrity of the membranous viral replication complex.
Item Description:Gesehen am 14.09.2022
Physical Description:Online Resource
ISSN:1934-6069
DOI:10.1016/j.chom.2010.12.002

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