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CONSTITUTIVE EPISOMAL EXPRESSION OF POLYPEPTIDE-IX (PIX) IN A 293-BASED CELL-LINE COMPLEMENTS THE DEFICIENCY OF PIX MUTANT ADENOVIRUS TYPE-5

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UNSPECIFIED (1995) CONSTITUTIVE EPISOMAL EXPRESSION OF POLYPEPTIDE-IX (PIX) IN A 293-BASED CELL-LINE COMPLEMENTS THE DEFICIENCY OF PIX MUTANT ADENOVIRUS TYPE-5. JOURNAL OF VIROLOGY, 69 (11). pp. 6627-6633.

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Abstract

The human adenovirus type 5 capsid is composed of a number of distinct polypeptides. It has been shown previously that one of these, polypeptide IX (pIX), is not absolutely required for the production of viable virus. However, viruses lacking this polypeptide have a significantly reduced packaging limit and, in the one case studied, also show a thermolabile virion phenotype. This report describes the use of eukaryotic episomal vectors based on the Epstein-Barr virus replicon to generate cells which stably express pIX. These cells provide pIX that is efficiently incorporated into virions that are genetically pIX(-); such particles show enhanced thermostability. These cells have also been used to isolate a genetically pIX(-) virus having a genome of length some 2.3 kbp in excess of the previously defined packaging limit for pIX(-) virus; the resulting virions have wild-type thermostability. These cells expand the theoretical capacity of adenovirus vectors for foreign DNA to around 9.2 kbp and may therefore be useful in gene therapy applications in which vector capacity is limiting.

Item Type: Journal Article
Subjects: Q Science > QR Microbiology > QR355 Virology
Journal or Publication Title: JOURNAL OF VIROLOGY
Publisher: AMER SOC MICROBIOLOGY
ISSN: 0022-538X
Official Date: November 1995
Dates:
DateEvent
November 1995UNSPECIFIED
Volume: 69
Number: 11
Number of Pages: 7
Page Range: pp. 6627-6633
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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