PMID- 32035727 OWN - NLM STAT- MEDLINE DCOM- 20210506 LR - 20210506 IS - 1557-3117 (Electronic) IS - 1053-2498 (Linking) VI - 39 IP - 4 DP - 2020 Apr TI - AAV-mediated TIMP-1 overexpression in aortic tissue reduces the severity of allograft vasculopathy in mice. PG - 389-398 LID - S1053-2498(20)31356-5 [pii] LID - 10.1016/j.healun.2020.01.1338 [doi] AB - BACKGROUND: Allograft vasculopathy (AV) is the primary limiting factor for long-term graft survival. An increased activity of matrix metalloproteinases (MMPs) contributes to neointima formation in AV and represents a potential therapeutic target. Adeno-associated virus (AAV)-mediated gene therapy comprises a potentially benign vector model for the long-term expression of MMP antagonists. METHODS: Aortic allografts from DBA/2 mice were incubated with control buffer, AAV-enhanced green fluorescence protein (EGFP), or tissue inhibitor of metalloproteinases 1 (TIMP-1)-loaded AAV (AAV-TIMP-1) and transplanted into the infrarenal aorta of C57BL/6 mice. Cyclosporine A (10 mg/kg body weight) was administered daily. Explantation as well as histomorphometric and immunohistochemical evaluation was performed after 30 days. Matrix metalloproteinase (MMP) activity was visualized by gelatin in situ zymography. RESULTS: Intima-to-media area ratio and neointima formation were significantly reduced in the AAV-TIMP-1 treatment group compared with those in the control group (by 40%; p < 0.001) and the AAV-EGFP group (by 38.2%; p < 0.001). TIMP-1 overexpression positively affected several pathomechanisms for the development of AV both in vitro and in vivo as compared to that in the control groups: endothelium integrity was preserved as shown by zona occludens 1 and occludin staining; MMP9 expression and activity were significantly reduced (p = 0.01); and smooth muscle cell migration was significantly reduced as smooth muscle actin positive cells predominantly remained in the aortic media in the treatment group (p = 0.001). Moreover, macrophage infiltration was markedly reduced by 49% in the AAV-TIMP-1 group (p < 0.001). CONCLUSION: Immediate post-harvesting allograft incubation with AAV-TIMP-1 reduces neointima formation and macrophage infiltration, constituting a possible adjunct therapeutic strategy to preserve graft function after transplantation. CI - Copyright (c) 2020 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved. FAU - Remes, Anca AU - Remes A AD - Department of Internal Medicine III, University Hospital Kiel, Kiel, Germany. FAU - Franz, Maximilian AU - Franz M AD - Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany. FAU - Zaradzki, Marcin AU - Zaradzki M AD - Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany. FAU - Borowski, Christopher AU - Borowski C AD - Department of Internal Medicine III, University Hospital Kiel, Kiel, Germany. FAU - Frey, Norbert AU - Frey N AD - Department of Internal Medicine III, University Hospital Kiel, Kiel, Germany. FAU - Karck, Matthias AU - Karck M AD - Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany. FAU - Kallenbach, Klaus AU - Kallenbach K AD - INCCI HaerzZenter, Department of Cardiac Surgery, Luxembourg, Luxembourg. FAU - Muller, Oliver J AU - Muller OJ AD - Department of Internal Medicine III, University Hospital Kiel, Kiel, Germany. FAU - Wagner, Andreas H AU - Wagner AH AD - Institute of Physiology and Pathophysiology, Heidelberg University, Heidelberg, Germany. FAU - Arif, Rawa AU - Arif R AD - Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany. Electronic address: rawa.arif@med.uni-heidelberg.de. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200130 PL - United States TA - J Heart Lung Transplant JT - The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation JID - 9102703 RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - 63231-63-0 (RNA) SB - IM MH - Allografts MH - Animals MH - Aorta, Thoracic/metabolism/pathology/*transplantation MH - Blotting, Western MH - Cells, Cultured MH - Dependovirus/*enzymology MH - Disease Models, Animal MH - *Gene Expression Regulation MH - Graft Rejection/enzymology/*genetics/pathology MH - Humans MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred DBA MH - RNA/genetics MH - Tissue Inhibitor of Metalloproteinase-1/biosynthesis/*genetics MH - Tunica Intima/*metabolism/pathology OTO - NOTNLM OT - adeno-associated virus OT - allograft vasculopathy OT - gene therapy OT - matrix metalloproteinases OT - tissue inhibitor of metalloproteinases EDAT- 2020/02/10 06:00 MHDA- 2021/05/07 06:00 CRDT- 2020/02/10 06:00 PHST- 2019/10/09 00:00 [received] PHST- 2020/01/16 00:00 [revised] PHST- 2020/01/24 00:00 [accepted] PHST- 2020/02/10 06:00 [pubmed] PHST- 2021/05/07 06:00 [medline] PHST- 2020/02/10 06:00 [entrez] AID - S1053-2498(20)31356-5 [pii] AID - 10.1016/j.healun.2020.01.1338 [doi] PST - ppublish SO - J Heart Lung Transplant. 2020 Apr;39(4):389-398. doi: 10.1016/j.healun.2020.01.1338. Epub 2020 Jan 30.