A picornaviral ‘2A-like’ sequence based tricistronic vector allowing for high level therapeutic gene expression coupled to a dual reporter system.

MJ Osborn, A Panoskaltsis-Mortari, RT McElmurry, SK Bell, DAA Vignali, Martin Denis Ryan, A Wilbur, RS McIvor, J Tolar, BR Blazar

Research output: Contribution to journalArticlepeer-review

Abstract

The 2A-like sequences from members of the picornavirus family were utilized to construct a tricistronic vector bearing the human iduronidase (IDUA) gene along with the firefly luciferase and DsRed2 reporter genes. The 2A-like sequences mediate a cotranslational cleavage event resulting in the release of each individual protein product. Efficient cleavage was observed and all three proteins were functional in vitro and in vivo, allowing for supratherapeutic IDUA enzyme levels and the coexpression of luciferase and DsRed2 expression, which enabled us to track gene expression.

Original languageEnglish
Pages (from-to)569-574
Number of pages6
JournalMolecular Therapy
Volume12
DOIs
Publication statusPublished - Sept 2005

Keywords

  • multicistronic
  • cis-acting hydrolase elements
  • internal ribosome entry site
  • iduronidase
  • mucopolysaccharidosis type I
  • whole body imaging
  • MOUTH-DISEASE VIRUS
  • ALPHA-L-IDURONIDASE
  • CLEAVAGE
  • POLYPROTEIN
  • PROGRESS
  • GENERATION
  • PROSPECTS
  • PROTEINS
  • CISTRON
  • HURLER

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