Hepatitis B virus core protein interacts with CD59 to promote complement-mediated liver inflammation during chronic hepatitis B virus infection

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Abstract

The inflammatory response mediated by the immune system is the major cause of hepatitis B virus (HBV)-associated liver injury. Here, we identified CD59, as a novel HBc-interacting protein in hepatocytes by tandem affinity purification (TAP) screening. The expression of CD59 was markedly down-regulated in HBc-transfected HepG2 or HepG2.215 cells, which resulted in an upshift of hepatocyte sensitivity to membrane attack complex (MAC)-induced cell lysis. These results were consistent with the accumulation of MACs in the liver of HBV-infected patients. Additional analyses using laser confocal microscopy, quantitative PCR and flow cytometry revealed that CD59 was specifically translocated to the nucleus upon binding to HBc, which induced the down-regulation of CD59 on both the mRNA and protein levels. © 2013 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Liu, D., Ni, B., Wang, L., Zhang, M., Liu, W., & Wu, Y. (2013). Hepatitis B virus core protein interacts with CD59 to promote complement-mediated liver inflammation during chronic hepatitis B virus infection. FEBS Letters, 587(20), 3314–3320. https://doi.org/10.1016/j.febslet.2013.08.044

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