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J Gen Virol 78 (1997), 925-928
© 1997 Society for General Microbiology
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Journal of General Virology, Vol 78, 925-928, Copyright © 1997 by Society for General Microbiology

ARTICLES

Tropic determinant for canine parvovirus and feline panleukopenia virus functions through the capsid protein VP2

AL Spitzer, CR Parrish and IH Maxwell
Department of Dermatology B153, University of Colorado Health Sciences Center, Denver 80262, USA.

Canine parvovirus (CPV) can productively infect canine and feline cell lines whereas feline panleukopenia virus (FPV) is restricted to the latter. The major determinants of tropism are two amino acids in the sequence shared by the capsid proteins, VP1 and VP2. We have shown that a rodent parvovirus-derived transducing genome, containing the luciferase reporter, can be packaged by VP1 and VP2 from separate helper sources. Canine A72 cells and feline CFK cells were transduced with recombinant virions generated using VP1 and VP2 combinations from CPV and FPV. Both VP1 and VP2 were necessary for production of transducing virions. Efficient transduction of A72 cells required VP2 of CPV. Therefore, the capsid determinants of tropism for CPV and FPV are in VP2, although a source of VP1 is also necessary to produce infectious particles. The results extend similar observations on the tropic determinants of different strains of minute virus of mice.


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I. H. Maxwell and F. Maxwell
Parvovirus LuIII transducing vectors packaged by LuIII versus FPV capsid proteins: the VP1 N-terminal region is not a major determinant of human cell permissiveness
J. Gen. Virol., May 1, 2004; 85(5): 1251 - 1257.
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