Evaluation of promoters for driving efficient transgene expression in neonatal porcine islets
- Author(s)
- Londrigan, SL; Brady, JL; Sutherland, RM; Hawthorne, WJ; Thomas, HE; Jhala, G; Cowan, PJ; Kay, TWH; O'Connell, PJ; Lew, AM;
- Details
- Publication Year 2007-03,Volume 14,Issue #2,Page 119-125
- Journal Title
- XENOTRANSPLANTATION
- Publication Type
- Journal Article
- Abstract
- There is considerable interest in the viral modification of insulin-producing islets, including porcine islets, in the context of islet xenotransplantation to treat type I diabetes. Adenovirus (Adv) gene delivery offers the potential to modify pre-transplant islets for enhanced survival. Modifications include transfer of cytoprotective molecules to ensure islet survival immediately post-transplant, and molecules to dampen the immune system and prevent chronic islet graft rejection. In this study, we compared different promoters (three promiscuous and two tissue-specific promoters) for their efficiency in driving gene expression in neonatal pig islet tissue after Adv delivery. We also compared the efficiency of these promoters in adult islets from mouse and human pancreata. We observed that the promiscuous cytomegalovirus promoter was the most potent, eliciting high luciferase expression in neonatal pig islets, as well as in human and mouse islets. In contrast, the mammalian EF1-alpha promoter educed comparatively intermediate gene expression. The mouse major histocompatibility complex class I promoter H-2K(b) and the pancreatic-specific promoters insulin and human pdx-1 (area 11) performed poorly in islets from all three species. This has important implications for the generation of modified neonatal pig islets for transplantation into humans.
- Publisher
- BLACKWELL PUBLISHING
- Keywords
- HUMAN PANCREATIC-ISLETS; MEDIATED GENE-TRANSFER; BETA-CELLS; DIABETES-MELLITUS; TRANSPLANTATION; SURVIVAL; VECTORS; PROTEIN; MURINE; TRANSDUCTION
- Publisher's Version
- https://doi.org/10.1111/j.1399-3089.2007.00376.x
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2007-03-01 12:00:00