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Uchida, T. et al.

HN glycoprotein of HVJ (Sendai virus) enhances the selective cytotoxicity of diphtheria toxin fragment A-containing liposomes on subacute sclerosing panencephalitis virus-infected cells.

Fragment A of diphtheria toxin-containing liposomes (naked liposomes) selectively kill subacute sclerosing panencephalitis virus-infected cells (SSPE cells) (Exp cell res 132 (1981) 259) [10]. Fragment A-containing liposomes associated with either hemagglutinating and neuraminidase ( HN) or fusion (F) glycoprotein of HVJ (Sendai virus) were prepared. These liposomes did not kill normal cultured cells. Fragment A-containing liposomes associated with HN protein were much more cytotoxic than naked liposomes containing fragment A to SSPE cells. Their cytotoxicity to the SSPE cells was influenced by the duration of incubation and the amount of HN protein. Fragment A-containing liposomes associated with F protein had about the same cytotoxicity on SSPE cells as had naked liposomes containing fragment A. Fragment A-containing liposomes associated with wheat germ agglutinin (WGA) were also prepared, but these also had the same toxicity as naked liposomes containing fragment A. The effects of monoclonal antibodies against HN protein on the cytotoxicity on SSPE cells of fragment A-containing liposomes associated with HN were studied. The significance of these results with regard to the actions of HN protein and possible reasons for the selective killing of SSPE cells are discussed.[1]

References

HN glycoprotein of HVJ (Sendai virus) enhances the selective cytotoxicity of diphtheria toxin fragment A-containing liposomes on subacute sclerosing panencephalitis virus-infected cells. Uchida, T., Ueda, S., Nakanishi, M., Miura, N., Okada, Y. Exp. Cell Res. (1984) [Pubmed]

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