PMID- 17255530 OWN - NLM STAT- MEDLINE DCOM- 20070425 LR - 20220223 IS - 1524-4636 (Electronic) IS - 1079-5642 (Linking) VI - 27 IP - 4 DP - 2007 Apr TI - Nrf2 gene transfer induces antioxidant enzymes and suppresses smooth muscle cell growth in vitro and reduces oxidative stress in rabbit aorta in vivo. PG - 741-7 AB - BACKGROUND: Reactive oxygen species (ROS) play a major role in vascular inflammation and pathophysiology of many vascular diseases such as atherosclerosis and injury-induced neointima formation after balloon angioplasty. Nuclear factor E2-related factor-2 (Nrf2) is a transcription factor orchestrating antioxidant and cytoprotective responses on oxidative and electrophilic stress, and it has been shown to have antiinflammatory effects in vascular cells in vitro. We therefore postulated that Nrf2 gene transfer would have salutary effects on vascular inflammation after angioplasty. METHODS AND RESULTS: Transduction of vascular smooth muscle cells (VSMCs) with Nrf2-expressing adenovirus increased the expression of several antioxidant enzymes including heme oxygenase-1 (HO-1) compared with beta-galactosidase (AdLacZ)-transduced controls. Moreover, Nrf2 gene transfer also inhibited vascular smooth muscle cell (VSMC) proliferation, and the effect was partially reversed by the HO inhibitor Sn(IV) protoporphyrin. In vivo, adenoviral gene transfer effectively reduced oxidative stress determined by antibody staining against oxidized epitopes of LDL, as well as inhibited vascular inflammation assessed by the macrophage cell count and monocyte chemoattractant protein-1 (MCP-1) staining. However, the antiproliferative effects of Nrf2 in vivo were counterbalanced with diminished apoptosis in neointimal VSMCs, resulting in no change in neointimal hyperplasia. CONCLUSIONS: Nrf2 gene transfer or Nrf2-inducing drugs may have therapeutic applications in vascular diseases in which inflammation and oxidative stress play a role. However, the contrasting growth inhibitory and antiapoptotic effects of Nrf2 need to be considered in pathological conditions in which SMC proliferation plays a critical role. FAU - Levonen, Anna-Liisa AU - Levonen AL AD - Department of Biotechnology and Molecular Medicine, A.I. Virtanen Institute, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland. Anna-Liisa.Levonen@uku.fi FAU - Inkala, Matias AU - Inkala M FAU - Heikura, Tommi AU - Heikura T FAU - Jauhiainen, Suvi AU - Jauhiainen S FAU - Jyrkkanen, Henna-Kaisa AU - Jyrkkanen HK FAU - Kansanen, Emilia AU - Kansanen E FAU - Maatta, Kirsi AU - Maatta K FAU - Romppanen, Elina AU - Romppanen E FAU - Turunen, Paivi AU - Turunen P FAU - Rutanen, Juha AU - Rutanen J FAU - Yla-Herttuala, Seppo AU - Yla-Herttuala S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070125 PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (NF-E2-Related Factor 2) RN - EC 1.- (Oxidoreductases) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 1.6.5.2 (NAD(P)H Dehydrogenase (Quinone)) SB - IM MH - Animals MH - Aorta/injuries/*metabolism/pathology MH - Apoptosis MH - Arteritis/etiology/pathology/physiopathology MH - Catheterization/adverse effects MH - Cell Division MH - Cell Proliferation MH - Endothelium, Vascular/physiopathology MH - Gene Expression Regulation MH - *Gene Transfer Techniques MH - Heme Oxygenase-1/metabolism MH - Humans MH - Hyperplasia MH - Myocytes, Smooth Muscle/*cytology MH - NAD(P)H Dehydrogenase (Quinone)/metabolism MH - NF-E2-Related Factor 2/*genetics/metabolism MH - *Oxidative Stress MH - Oxidoreductases/genetics/*metabolism MH - Rabbits MH - Tunica Intima/pathology/physiopathology EDAT- 2007/01/27 09:00 MHDA- 2007/04/26 09:00 CRDT- 2007/01/27 09:00 PHST- 2007/01/27 09:00 [pubmed] PHST- 2007/04/26 09:00 [medline] PHST- 2007/01/27 09:00 [entrez] AID - 01.ATV.0000258868.80079.4d [pii] AID - 10.1161/01.ATV.0000258868.80079.4d [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 2007 Apr;27(4):741-7. doi: 10.1161/01.ATV.0000258868.80079.4d. Epub 2007 Jan 25.