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Journal of Virology, July 2001, p. 6375-6383, Vol. 75, No. 14
Molecular and Cellular Biology
Program1 and Division of Human
Biology,2 Fred Hutchinson Cancer Research
Center, Seattle, Washington 98109-1024, and Department of
Pathology, University of Washington, Seattle, Washington
981953
Received 27 December 2000/Accepted 13 April 2001
Previous studies have suggested that Moloney murine leukemia virus
(MoMLV)-based vectors pseudotyped with the vesicular stomatitis virus G
glycoprotein (VSV-G) have extensive ability to transduce nonmammalian
cells. However, we have identified multiple cell lines from fish (FHM),
mosquitoes (Mos-55), moths (Sf9 and High-5), flies (S2), and frogs
(XPK2) that are not efficiently transduced by MoMLV-based vectors
pseudotyped with many different viral envelope proteins, including
VSV-G, while the same vectors are functional in these cells following
transfection. A comparison of MoMLV-based vector transduction in
mammalian and nonmammalian cells shows that the nonmammalian cells
exhibit blocks at either entry, reverse transcription, or integration.
Additionally, VSV-G-pseudotyped MoMLV-based vector transduction is
attenuated in the zebrafish cell line ZF4 at entry and/or reverse
transcription, whereas other transduction processes are unaffected. We
show that the variation of transduction by MoMLV-based vectors in
mammalian and nonmammalian cells is not due to differences in culture
conditions or cell division rate but is likely the result of divergence
in cellular factors required for retroviral transduction.
0022-538X/01/$04.00+0 DOI: 10.1128/JVI.75.14.6375-6383.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Many Nonmammalian Cells Exhibit Postentry Blocks to
Transduction by Gammaretroviruses Pseudotyped with Various Viral
Envelopes, Including Vesicular Stomatitis Virus G
Glycoprotein
*
Corresponding author. Mailing address: Fred Hutchinson
Cancer Research Center, 1100 Fairview Ave. N., Room C2-105, Seattle, WA
98109-1024. Phone: (206) 667-2890. Fax: (206) 667-6523. E-mail: dmiller{at}fhcrc.org.
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