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Herd-level seroprevalence of pestivirus infection in goat population in Poland

100%

Potârniche A. V. , Czopowicz M. , Szaluś-Jordanow O. , Moroz A. , Mickiewicz M. , Witkowski L. , Grabovskyi S. S. , Spînu M. , Kaba J. , Potârniche A. V. , Czopowicz M. , Szaluś-Jordanow O. , Moroz A. , Mickiewicz M. , Witkowski L. , Grabovskyi S. S. , Spînu M. , Kaba J.

Biologia molekularna wirusow z rodzaju Pestivirus

63%

Stadejek T. , Pejsak Z.

Biotechnologia

1993

nr 2

63-68

Effect of N-glycosylation inhibition on the synthesis and processing of classical swine fever virus glycoproteins

63%

Tyborowska J. , Zdunek E. , Szewczyk B.

tom 54

nr 4

813-819

Classical swine fever virus (CSFV) is often used as a surrogate model in molecular studies of the closely related hepatitis C virus. In this report we have examined the effect of the inhibition of glycosylation on the survival and maturation of CSFV. Viral glycoproteins (Erns, E1, E2) form biologically active complexes — homo- and heterodimers, which are indispensable for viral life cycle. Those complexes are highly N-glycosylated. We studied the influence of N-glycosylation on dimer formation using Erns and E2 glycoproteins produced in insect cells after infection with recombinant baculoviruses. The glycoproteins were efficiently synthesized in insect cells, had similar molecular masses and formed dimers like their natural counterparts. Surprisingly, the addition of tunicamycin (an antibiotic which blocks early steps of glycosylation) to insect cell culture blocked not only dimer formation but it also led to an almost complete disappearance of E2 even in monomeric form. Tunicamycin did not exert a similar effect on the synthesis and formation of Erns dimers; the dimers were still formed, which suggests that Erns glycan chains are not necessary for dimer formation. We have also found that very low doses of tunicamycin (much lower than those used for blocking N-glycosylation) drastically reduced CSFV spread in SK6 (swine kidney) cell culture and the virus yield. These facts indicate that N-glycosylation inhibitors structurally similar to tunicamycin may be potential therapeutics for the inhibition of the spread of CSFV and related viruses

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51%

Wilczek-Jagiello A.

2013

nr 03-04