RACK1 mediates rewiring of intracellular networks induced by hepatitis C virus infection

English version

Autoři: Jae Seung Lee ^aff001; Keisuke Tabata ^aff002; Woan-Ing Twu ^aff002; Shafiqur Md Rahman ^aff003; Hee Sun Kim ^aff001; Jin Bae Yu ^aff003; Min Hyeok Jee ^aff003; Ralf Bartenschlager ^aff002; Sung Key Jang ^aff001
Působiště autorů: Department of Integrative Bioscience & Biotechnology, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA ^aff001; Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany ^aff002; Department of Life Sciences, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA ^aff003; Division Virus-Associated Carcinogenesis, German Cancer Research Center, Heidelberg, Germany ^aff004
Vyšlo v časopise: RACK1 mediates rewiring of intracellular networks induced by hepatitis C virus infection. PLoS Pathog 15(9): e32767. doi:10.1371/journal.ppat.1008021
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.ppat.1008021

Souhrn

Hepatitis C virus (HCV) is a positive-strand RNA virus replicating in a membranous replication organelle composed primarily of double-membrane vesicles (DMVs) having morphological resemblance to autophagosomes. To define the mechanism of DMV formation and the possible link to autophagy, we conducted a yeast two-hybrid screening revealing 32 cellular proteins potentially interacting with HCV proteins. Among these was the Receptor for Activated Protein C Kinase 1 (RACK1), a scaffolding protein involved in many cellular processes, including autophagy. Depletion of RACK1 strongly inhibits HCV RNA replication without affecting HCV internal ribosome entry site (IRES) activity. RACK1 is required for the rewiring of subcellular membranous structures and for the induction of autophagy. RACK1 binds to HCV nonstructural protein 5A (NS5A), which induces DMV formation. NS5A interacts with ATG14L in a RACK1 dependent manner, and with the ATG14L-Beclin1-Vps34-Vps15 complex that is required for autophagosome formation. Both RACK1 and ATG14L are required for HCV DMV formation and viral RNA replication. These results indicate that NS5A participates in the formation of the HCV replication organelle through interactions with RACK1 and ATG14L.

Klíčová slova:

Biology and life sciences – Genetics – Gene expression – Gene regulation – Small interfering RNAs – Biochemistry – Nucleic acids – RNA – Non-coding RNA – Cell biology – Cell processes – Cell death – Autophagic cell death – Cellular structures and organelles – Vesicles – Molecular biology – Molecular biology techniques – Transfection – Microbiology – Virology – Viral replication – Medical microbiology – Microbial pathogens – Viral pathogens – Organisms – Viruses – RNA viruses – Flaviviruses – Hepacivirus – Hepatitis C virus – Research and analysis methods – Medicine and health sciences – Pathology and laboratory medicine – Pathogens – Physical sciences – Physics – Condensed matter physics – Nucleation

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