PMID- 25915925 OWN - NLM STAT- MEDLINE DCOM- 20160418 LR - 20181203 IS - 1525-0024 (Electronic) IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 23 IP - 7 DP - 2015 Jul TI - Cardiac AAV9 Gene Delivery Strategies in Adult Canines: Assessment by Long-term Serial SPECT Imaging of Sodium Iodide Symporter Expression. PG - 1211-1221 LID - S1525-0016(16)30152-6 [pii] LID - 10.1038/mt.2015.78 [doi] AB - Heart failure is a leading cause of morbidity and mortality, and cardiac gene delivery has the potential to provide novel therapeutic approaches. Adeno-associated virus serotype 9 (AAV9) transduces the rodent heart efficiently, but cardiotropism, immune tolerance, and optimal delivery strategies in large animals are unclear. In this study, an AAV9 vector encoding canine sodium iodide symporter (NIS) was administered to adult immunocompetent dogs via epicardial injection, coronary infusion without and with cardiac recirculation, or endocardial injection via a novel catheter with curved needle and both end- and side-holes. As NIS mediates cellular uptake of clinical radioisotopes, expression was tracked by single-photon emission computerized tomography (SPECT) imaging in addition to Western blot and immunohistochemistry. Direct epicardial or endocardial injection resulted in strong cardiac expression, whereas expression after intracoronary infusion or cardiac recirculation was undetectable. A threshold myocardial injection dose that provides robust nonimmunogenic expression was identified. The extent of transmural myocardial expression was greater with the novel catheter versus straight end-hole needle delivery. Furthermore, the authors demonstrate that cardiac NIS reporter gene expression and duration can be quantified using serial noninvasive SPECT imaging up to 1 year after vector administration. These data are relevant to efforts to develop cardiac gene delivery as heart failure therapy. FAU - Moulay, Gilles AU - Moulay G AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Ohtani, Tomohito AU - Ohtani T AD - Osaka University, Osaka, Japan. FAU - Ogut, Ozgur AU - Ogut O AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Guenzel, Adam AU - Guenzel A AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Behfar, Atta AU - Behfar A AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Zakeri, Rosita AU - Zakeri R AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Haines, Philip AU - Haines P AD - University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Storlie, Jimmy AU - Storlie J AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Bowen, Lorna AU - Bowen L AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Pham, Linh AU - Pham L AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Kaye, David AU - Kaye D AD - Baker Heart Research Institute, Melbourne, Australia. FAU - Sandhu, Gurpreet AU - Sandhu G AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - O'Connor, Michael AU - O'Connor M AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Russell, Stephen AU - Russell S AD - Mayo Clinic, Rochester, Minnesota, USA. FAU - Redfield, Margaret AU - Redfield M AD - Mayo Clinic, Rochester, Minnesota, USA. Electronic address: redfield.margaret@mayo.edu. LA - eng GR - P01 HL076611/HL/NHLBI NIH HHS/United States GR - R01 HL105418/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150427 PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - 0 (Symporters) RN - 4XE5NDT4K1 (sodium-iodide symporter) SB - IM MH - Animals MH - Dependovirus/genetics MH - Dogs MH - Gene Expression MH - *Gene Transfer Techniques MH - *Genetic Therapy MH - Genetic Vectors MH - Heart Failure/genetics/pathology/*therapy MH - Humans MH - Myocardium/metabolism MH - Pericardium/pathology MH - Symporters/administration & dosage/*genetics MH - Tomography, Emission-Computed, Single-Photon PMC - PMC4817780 EDAT- 2015/04/29 06:00 MHDA- 2016/04/19 06:00 PMCR- 2016/07/01 CRDT- 2015/04/28 06:00 PHST- 2014/11/19 00:00 [received] PHST- 2015/04/18 00:00 [accepted] PHST- 2015/04/28 06:00 [entrez] PHST- 2015/04/29 06:00 [pubmed] PHST- 2016/04/19 06:00 [medline] PHST- 2016/07/01 00:00 [pmc-release] AID - S1525-0016(16)30152-6 [pii] AID - 10.1038/mt.2015.78 [doi] PST - ppublish SO - Mol Ther. 2015 Jul;23(7):1211-1221. doi: 10.1038/mt.2015.78. Epub 2015 Apr 27.