NDLI: Redirecting lentiviral vectors by insertion of integrin-tageting peptides into envelope proteins.

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Redirecting lentiviral vectors by insertion of integrin-tageting peptides into envelope proteins.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Morizono, Kouki Pariente, Nonia Xie, Yiming Chen, Irvin S. Y.
Description	Country affiliation: United States Author Affiliation: Morizono K ( Department of Medicine, University of California, Los Angeles, 90095, USA.)
Abstract	BACKGROUND: Targeting gene therapy vectors that can home in on desired cell and tissue types in vivo comprise the ultimate gene delivery system. We have previously developed targeting lentiviral vectors by pseudotyping vectors with modified Sindbis virus envelope proteins. The envelope protein contains the Fc-binding region of protein A (ZZ domain), so the virus can be conjugated with antibodies. The conjugated antibody mediates specific transduction of the cells and tissues expressing the target antigens, both in vitro and in vivo. However, more stable conjugation of targeting molecules would be optimal for use in immunocompetent animals, as well as in humans. METHODS: We inserted integrin-targeting peptides into two sites of the targeting envelope proteins and determined whether the peptides serve as receptor-binding regions of the envelope proteins and redirect the pseudotyped viruses. RESULTS: The integrin-targeting peptides can mediate binding to cells via the interaction with integrins on target cells and transduction. Peptides with a higher binding affinity increase titers of pseudotyped virus. We found two regions on the envelope protein that can accommodate insertion and serve as receptor-binding regions. Combining the peptides in two distinct regions increased the titers of the virus. CONCLUSIONS: Successful incorporation of targeting molecules into the envelope protein will broaden the application of targeting vectors for a wide variety of experimental and clinical settings.
File Format	HTM / HTML
ISSN	1099498X
e-ISSN	15212254
DOI	10.1002/jgm.1339
Journal	The Journal of Gene Medicine
Issue Number	7
Volume Number	11
Language	English
Publisher	Wiley
Publisher Date	2009-07-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Molecular Biology Genetic Vectors Integrins Metabolism Lentivirus Peptides Viral Envelope Proteins Animals Cell Line Genetics Recombinant Fusion Proteins Sindbis Virus Transduction, Genetic Research Support, N.i.h., Extramural
Content Type	Text
Resource Type	Article
Subject	Genetics Drug Discovery Molecular Biology Molecular Medicine Genetics (clinical)

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