Related Experiment Video
Updated: Aug 17, 2026

Vaccinia Reporter Viruses for Quantifying Viral Function at All Stages of Gene Expression
Published on: May 15, 2014
A picornaviral 2A-like sequence-based tricistronic vector allowing for high-level therapeutic gene expression coupled
Mark J Osborn1, Angela Panoskaltsis-Mortari, Ron T McElmurry
1Pediatrics, Hematology-Oncology, Blood and Marrow Transplant Program, Institute of Human Genetics, Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA.
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.

