Single Intracoronary Injection of Encapsulated Antagomir-92a Promotes Angiogenesis and Prevents Adverse Infarct Remodeling
Bellera Gotarda, Neus (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Barba, Ignasi (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Rodriguez-Sinovas, Antonio (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Ferret, Eulalia (I+D Pierre-Fabre Ibérica S.A)
Asín, Miguel Angel (I+D Pierre-Fabre Ibérica S.A)
Gonzalez-Alujas, MªTeresa (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Pérez-Rodón, Jordi (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Esteves, Marielle (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Fonseca, Carla (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Toran, Nuria (Hospital Universitari Vall d'Hebron. Institut de Recerca)
García del Blanco, Bruno (Hospital Universitari Vall d'Hebron)
Pérez, Amadeo (I+D Pierre-Fabre Ibérica S.A)
García-Dorado, David (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Universitat Autònoma de Barcelona

Date:	2014
Abstract:	Small and large preclinical animal models have shown that antagomir-92a-based therapy reduces early postischemic loss of function, but its effect on postinfarction remodeling is not known. In addition, the reported remote miR-92a inhibition in noncardiac organs prevents the translation of nonvectorized miR-targeted therapy to the clinical setting. We investigated whether a single intracoronary administration of antagomir-92a encapsulated in microspheres could prevent deleterious remodeling of myocardium 1 month after acute myocardial infarction AUTHOR: Should "acute" be added before "myocardial infarction" (since abbreviation is AMI)? Also check at first mention in main text (AMI) without adverse effects. In a percutaneous pig model of reperfused AMI, a single intracoronary administration of antagomir-92a encapsulated in specific microspheres (9 μm poly-d,-lactide-co-glycolide [PLGA]) inhibited miR-92a in a local, selective, and sustained manner (n=3 pigs euthanized 1, 3, and 10 days after treatment; 8×, 2×, and 5×-fold inhibition at 1, 3, and 10 days). Downregulation of miR-92a resulted in significant vessel growth (n=27 adult minipigs randomly allocated to blind receive encapsulated antagomir-92a, encapsulated placebo, or saline [n=8, 9, 9]; P =0. 001), reduced regional wall-motion dysfunction (P =0. 03), and prevented adverse remodeling in the infarct area 1 month after injury (P =0. 03). Intracoronary injection of microspheres had no significant adverse effect in downstream myocardium in healthy pigs (n=2), and fluorescein isothiocyanate albumin-PLGA microspheres were not found in myocardium outside the left anterior descending coronary artery territory (n=4) or in other organs (n=2). Early single intracoronary administration of encapsulated antagomir-92a in an adult pig model of reperfused AMI prevents left ventricular remodeling with no local or distant adverse effects, emerging as a promising therapeutic approach to translate to patients who suffer a large AMI.
Grants:	Ministerio de Ciencia e Innovación SAF2008-03067 Instituto de Salud Carlos III RD12-0042-0021
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Angiogenesis ; Antagomir ; Heart failure ; MicroRNA ; Myocardial infarction ; Remodeling
Published in:	Journal of the American Heart Association. Cardiovascular and cerebrovascular disease, Vol. 3 (september 2014) , ISSN 2047-9980

DOI: 10.1161/JAHA.114.000946
PMID: 25240056

21 p, 3.3 MB

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