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 Previous Article

Journal of Virology, January 2001, p. 548-555, Vol. 75, No. 1
0022-538X/01/$04.00+0   DOI: 10.1128/JVI.75.1.548-555.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Properties of Wild-Type, C-Terminally Truncated, and Chimeric Maedi-Visna Virus Glycoprotein and Putative Pseudotyping of Retroviral Vector Particles

Udo Zeilfelder and Valerie Bosch*

Forschungsschwerpunkt Angewandte Tumorvirologie, Deutsches Krebsforschungszentrum, D-69120 Heidelberg, Germany

Received 7 February 2000/Accepted 6 October 2000

We have characterized the properties of the maedi-visna virus (MVV) glycoprotein, which has a long cytoplasmic C-terminal domain, and of a panel of C-terminally truncated and C-terminally chimeric MVV-Env constructs. Cells expressing wild-type MVV glycoprotein form syncytia with target cells from many different species and tissues, demonstrating that the MVV-Env cellular receptor is widely distributed. Similar to the situation with other lentiviral glycoproteins, truncation of the C-terminal domain of MVV-Env significantly increases its membrane fusion capacity. However, despite their presence in a fusogenic form at the cell surface, neither the wild-type nor any of the C-terminally modified MVV-Env constructs, these latter lacking sterically inhibitory C termini, were able to successfully pseudotype murine leukemia virus- or human immunodeficiency virus-derived vector particles.


* Corresponding author. Mailing address: Forschungsschwerpunkt Angewandte Tumorvirologie, F0200, Deutsches Krebsforschungszentrum, Im Neuenheimer Feld 242, D-69120 Heidelberg, Germany. Phone: (49)-6221-424948. Fax: (49)-6221-424932. E-mail: v.bosch{at}dkfz-heidelberg.de.


Journal of Virology, January 2001, p. 548-555, Vol. 75, No. 1
0022-538X/01/$04.00+0   DOI: 10.1128/JVI.75.1.548-555.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.



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