title: Inhibition of Hepatitis B virus replication by phospholipid scramblase 1 in vitro and in vivo.
abstract: Human Phospholipid scramblase 1 (PLSCR1) is an α/β interferon-inducible protein that mediates antiviral activity against RNA viruses including vesicular stomatitis virus (VSV) and encephalomyocarditis virus (EMCV). In the present study, we investigated the antiviral activity of PLSCR1 protein against HBV (Hepatitis B virus). Firstly, PLSCR1 mRNA and protein expression was found to be downregulated in HepG2 cells after HBV infection. Then by performing co-transient-transfection experiments in cells and hydrodynamics-based transfection experiments in mice using a HBV expression plasmid and a PLSCR1 expression plasmid, we found that PLSCR1 inhibited HBV replication in vitro and in vivo through a significant reduction in the synthesis of viral proteins, DNA replicative intermediates and HBV RNAs. We also demonstrated that the antiviral action of PLSCR1 against HBV occurs, partly at least, by activating the Jak/Stat pathway. In conclusion, our results suggest that the expression of PLSCR1 is involved in HBV replication and that PLSCR1 has antiviral activity against HBV.
authors.affiliation: Beijing Institute of Radiation Medicine, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Yang
authors.forename: Xiangqian
authors.initials: X
authors.lastname: Zhu
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.forename: Xiaoran
authors.initials: X
authors.lastname: Ding
authors.forename: Mingming
authors.initials: M
authors.lastname: Han
authors.forename: Wei
authors.initials: W
authors.lastname: Hu
authors.forename: Xuejun
authors.initials: X
authors.lastname: Wang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhou
authors.forename: Shengqi
authors.initials: S
authors.lastname: Wang
mesh_terms: D000818:Animals; D015536:Down-Regulation; D015967:Gene Expression Regulation, Viral; D006509:Hepatitis B / Q000201:enzymology* / Q000235:genetics / Q000821:virology*; D006515:Hepatitis B virus / Q000235:genetics / Q000502:physiology*; D006801:Humans; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D049294:Phospholipid Transfer Proteins / Q000235:genetics / Q000378:metabolism*; D012367:RNA, Viral / Q000235:genetics / Q000378:metabolism; D014779:Virus Replication
chemical_list: C493422:PLSCR1 protein, human; D049294:Phospholipid Transfer Proteins; D012367:RNA, Viral