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Interference of the low-pH inactivated herpes simplex virus type 1 (HSV-1) strain HSZP with the early shutoff function of superinfecting HSV-1 strain KOS


Interference of the low-pH inactivated herpes simplex virus type 1 (HSV-1) strain HSZP with the early shutoff function of superinfecting HSV-1 strain KOS



Virus Research 60(1): 81-86



ISSN/ISBN: 0168-1702

PMID: 10225276

DOI: 10.1016/s0168-1702(99)00004-0

In former studies, we described that the HSZP strain of herpes simplex virus type 1 (HSV-1) was defective with respect to the early shutoff of host protein synthesis but was effective at interfering with the early shutoff function of the HSV-1 strain KOS, even when heat-inactivated or neutralized by antibody. However, the HSZP strain failed to interfere when inactivated with zinc ions or purified from cells treated with 2-deoxy-D-glucose. In this study, we provide evidence that the ability of the purified low-pH inactivated (citrate buffer, pH 3.0) and gel-filtered (Sephadex G-25) HSZP virions to adsorb host cells was not significantly affected. However, their ability to induce interference with the early shutoff function of the superinfecting HSV-1 strain KOS was restricted. In comparison with native virus, up to eight times more low-pH inactivated HSZP virions were needed to interfere with the shutoff by strain KOS. The interference was not due to exclusion of strain KOS by HSZP at the level of adsorption and/or penetration. The restriction was partially overcome by treatment of the cells with polyethylene glycol after adsorption of the low-pH inactivated HSZP virions. This observation indicates that the direct fusion of the virion envelope of low-pH inactivated HSZP with the plasma cell membrane was predominantly hampered.

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Accession: 010865714

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Related references

Specific binding of herpes simplex virus type 1 (HSV-1) strain HSZP to host cell surface can provoke interference with early shutoff of host protein synthesis induced by HSV-1 strain KOS. Journal of General Virology 75: 2053-2058, 1994

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