Hepatitis B virus Dane particles bind to human plasma apolipoprotein H

作者：Stefas I^*; Rucheton M; D'Angeac AD; Morel Baccard C; Seigneurin JM; Zarski JP; Martin M; Cerutti M; Bossy JP; Misse D; Graafland H; Veas F

来源：Hepatology, 2001, 33(1): 207-217.

DOI：10.1053/jhep.2001.20531

Human apolipoprotein H (apo H) was found to bind specifically to hepatitis B surface antigen (HBsAg) from hepatitis B virus (HBV)-infected individuals. We used recombinant HBsAg proteins to analyze HBV domains recognized by apo H. We showed that the myristylated pre-Si domain of HBsAg strongly interacted with apo H, This binding involved phospholipid components of the HBV envelope because their removal by detergent prevented apo H-HBsAg interaction. The opposite effects of iron and zinc metal ions on binding suggest that the oxidation of phospholipids also affects apo H-HBsAg interaction. After fractionation of viral particles on a sucrose gradient, and their addition to microtiter plates coated with apo H or anti-HBsAg, we observed that the maximal anti-HBsAg capture activity corresponded to a sucrose concentration of 36%, whereas the maximal apo H capture activity corresponded to a concentration of 39%. Electron microscopy and polymerase chain reaction (PCR) Southern blot studies of these fractions showed that the fraction with maximal apo H binding predominantly contained full Dane particles. Finally, we studied apo H-HBsAg binding relative to the presence of hepatitis B virus markers and observed that apo H binding activity for HBsAg was higher in sera from patients in the active virus replication phase.

• 出版日期2001-1