PMID- 30782477 OWN - NLM STAT- MEDLINE DCOM- 20200601 LR - 20200601 IS - 1873-2364 (Electronic) IS - 0960-8966 (Linking) VI - 29 IP - 3 DP - 2019 Mar TI - Various effects of AAV9-mediated betaARKct gene therapy on the heart in dystrophin-deficient (mdx) mice and delta-sarcoglycan-deficient (Sgcd-/-) mice. PG - 231-241 LID - S0960-8966(18)30150-0 [pii] LID - 10.1016/j.nmd.2018.12.006 [doi] AB - So far effective strategies to treat cardiomyopathy in patients with muscular dystrophies are still not clearly defined. Previously, treatment with beta-blockers showed beneficial effects on the development of cardiomyopathy in dystrophin-deficient (mdx) mice, but not in delta-sarcoglycan-deficient (Sgcd-/-) mice. We therefore aimed to study a more specific approach to target maladaptive beta-adrenergic signalling in these mice. It has been shown that lowering cardiac G-protein-coupled-receptor-kinase-2 (GRK2) activity with betaARKct expression, a peptide inhibitor of protein-coupled-receptor-kinase-2 (GRK2), results in improvement of heart failure in several different animal models. We therefore investigated whether adeno-associated virus type 9 (AAV9)-mediated gene delivery of betaARKct, could ameliorate cardiac pathology in mdx and Sgcd-/- mice. We found that long-term treatment with AAV9- betaARKct-cDNA with a cardiac-specific promoter significantly improves left ventricular systolic function and reduces myocardial hypertrophy in mdx mice, whereas only mild beneficial effects on cardiac function is observed in Sgcd-/- mice. Interestingly, in contrast to mdx mice neither GRK2 nor nuclear-factor-kappaB (NFkappaB) were upregulated in Sgcd-/- mice. Taken together, effectiveness of AAV-mediated betaARKct therapy may vary between different genetic mutations and presumably depend on the state of adrenergic dysregulation mediated through the upregulation of GRK2. CI - Copyright (c) 2018. Published by Elsevier B.V. FAU - Bauer, Ralf AU - Bauer R AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. Electronic address: ralf.bauer@wiesloch-zwei.de. FAU - Enns, Helene AU - Enns H AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Jungmann, Andreas AU - Jungmann A AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Leuchs, Barbara AU - Leuchs B AD - Tumor Virology, German Cancer Research Center, Im Neuenheimer Feld 580, 69120 Heidelberg, Germany. FAU - Volz, Christian AU - Volz C AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Schinkel, Stefanie AU - Schinkel S AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Koch, Walter J AU - Koch WJ AD - Center for Translational Medicine, Temple University School of Medicine, 3500 N Broad St, 19140 Philadelphia, PA, USA. FAU - Raake, Philip W AU - Raake PW AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Germany. FAU - Most, Patrick AU - Most P AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Germany; Center for Molecular and Translational Cardiology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. FAU - Katus, Hugo A AU - Katus HA AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Germany. FAU - Muller, Oliver J AU - Muller OJ AD - Internal Medicine III, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Germany; Department of Internal Medicine III, University of Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany. LA - eng PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20181220 PL - England TA - Neuromuscul Disord JT - Neuromuscular disorders : NMD JID - 9111470 RN - 0 (Dystrophin) RN - 0 (Sarcoglycans) RN - 0 (Sgcd protein, mouse) SB - IM MH - Animals MH - Cardiomyopathies/*genetics MH - *Dependovirus/genetics MH - Dystrophin/*deficiency/genetics MH - Genetic Therapy/methods MH - Heart/physiopathology MH - Heart Failure/genetics/physiopathology MH - Mice, Inbred mdx MH - Mice, Transgenic MH - Muscular Dystrophies/*genetics/metabolism MH - Sarcoglycans/*genetics MH - Ventricular Function, Left/genetics OTO - NOTNLM OT - Gene therapy OT - cardiomyopathy OT - muscular dystrophy OT - beta-adrenergic signalling EDAT- 2019/02/21 06:00 MHDA- 2020/06/02 06:00 CRDT- 2019/02/21 06:00 PHST- 2018/02/25 00:00 [received] PHST- 2018/10/21 00:00 [revised] PHST- 2018/12/16 00:00 [accepted] PHST- 2019/02/21 06:00 [pubmed] PHST- 2020/06/02 06:00 [medline] PHST- 2019/02/21 06:00 [entrez] AID - S0960-8966(18)30150-0 [pii] AID - 10.1016/j.nmd.2018.12.006 [doi] PST - ppublish SO - Neuromuscul Disord. 2019 Mar;29(3):231-241. doi: 10.1016/j.nmd.2018.12.006. Epub 2018 Dec 20.