Extended transgene expression from a nonintegrating adenoviral vector containing retroviral elements.

ABSTRACT: We studied the effects of specific retroviral elements in a first-generation serotype 5 adenoviral (Ad5) vector, AdLTR(2)EF1alpha-hEPO. This vector contains 858 base pair (bp) [251-bp envelope sequence plus 607-bp long-terminal repeat (LTR)] from Moloney murine leukemia virus (MoMLV), upstream of the human elongation factor-1alpha (EF1alpha) promoter and human erythropoietin (hEPO) cDNA, with the LTR sequence downstream of the polyadenylation signal. We compared expression of AdLTR(2)EF1alpha-hEPO with corresponding expressions of two conventional Ad5 vectors, AdEF1alpha-hEPO and AdCMV-hEPO, in vivo in submandibular glands in rats. Both the conventional vectors yielded low serum hEPO levels by day 7, and little change in hematocrits. In contrast, after receiving AdLTR(2)EF1alpha-hEPO, the

SUBMITTER: Zheng C 

PROVIDER: S-EPMC5264529 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature