PMID- 11482983 OWN - NLM STAT- MEDLINE DCOM- 20011204 LR - 20071114 IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 4 IP - 2 DP - 2001 Aug TI - Epstein-Barr virus/human vector provides high-level, long-term expression of alpha1-antitrypsin in mice. PG - 122-9 AB - We have constructed plasmid DNA vectors that contain Epstein-Barr virus (EBV) sequences and the human gene (SERPINA1) encoding alpha1-Antitrypsin (AAT). We demonstrate that a plasmid carrying the full SERPINA1 on a 19-kb genomic fragment and the EBV gene EBNA1 and its family of repeats binding sites undergoes efficient extrachromosomal replication in dividing mammalian tissue culture cells. Therefore, use of a whole genomic therapeutic gene to provide both replication and gene expression may be an effective gene therapy vector design, if the target cells are dividing. The efficacy of this same vector for expression of AAT in vivo in the nondividing cells of mouse liver was determined by hydrodynamic injection of naked plasmid DNA by means of the tail vein. A single injection of an EBV/genomic SERPINA1 vector provided >300 microg/ml of AAT, which approached normal plasma levels and persisted for the >9-month duration of the experiment. These data exceed most previously reported values, probably due to sequences in the genomic DNA that resist silencing of gene expression, possibly in combination with favorable effects on expression provided by the EBV sequences. These results demonstrate that plasmid DNA with the correct cis-acting sequences can provide in vivo long-term expression of protein at high levels that are therapeutically relevant for gene therapy. FAU - Stoll, S M AU - Stoll SM AD - Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA. FAU - Sclimenti, C R AU - Sclimenti CR FAU - Baba, E J AU - Baba EJ FAU - Meuse, L AU - Meuse L FAU - Kay, M A AU - Kay MA FAU - Calos, M P AU - Calos MP LA - eng GR - DK49022/DK/NIDDK NIH HHS/United States GR - DK51834/DK/NIDDK NIH HHS/United States GR - HLL64274/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - 0 (Trypsin Inhibitors) RN - 0 (alpha 1-Antitrypsin) SB - IM MH - Animals MH - Blotting, Southern MH - Cell Line MH - DNA Replication/physiology MH - *Gene Transfer Techniques MH - *Genetic Vectors MH - Herpesvirus 4, Human/*genetics/metabolism MH - Humans MH - Liver/physiology MH - Mice MH - Mice, Inbred C57BL MH - Plasmids MH - Trypsin Inhibitors/biosynthesis/genetics MH - alpha 1-Antitrypsin/biosynthesis/*genetics EDAT- 2001/08/03 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/08/03 10:00 PHST- 2001/08/03 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/08/03 10:00 [entrez] AID - S1525-0016(01)90429-0 [pii] AID - 10.1006/mthe.2001.0429 [doi] PST - ppublish SO - Mol Ther. 2001 Aug;4(2):122-9. doi: 10.1006/mthe.2001.0429.