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Epicardial transplantation of atrial micrografts

ABSTRACT: Ischemic heart disease remains the leading cause of mortality and morbidity worldwide despite improved possibilities in medical care. Alongside interventional therapies, such as coronary artery bypass grafting (CABG), adjuvant tissue-engineered and cell-based treatments can provide regenerative improvement. Unfortunately, most of these advanced approaches require multiple lengthy and costly preparation stages without in turn delivering significant clinical benefit. Here, we investigated the effect of epicardial matrix patch-encased atrial appendage micrografts (AAMs) in a mouse model of myocardial infarction. The matrix-covered AAM patches salvaged the myocardium from infarction-induced functional tissue loss. Fibrosis was attenuated, and site-targeted proteomics revealed AAM patch-activated pathways for angiogenesis and cardiogenesis. The matrix component of the graft further supports functional myocardial recovery by ventricular unloading. The composite epicardial matrix graft encasing AAM micrografts delivers effects desirable for adjuvant cardiac therapy preserving functional cardiac tissue and restricting fibrosis after myocardial infarction.

INSTRUMENT(S): Synapt G2-S HDMS

ORGANISM(S): Mus Musculus (ncbitaxon:10090)

SUBMITTER: Esko Kankuri

PROVIDER: MSV000084120 | MassIVE | Tue Jul 23 03:33:00 BST 2019

REPOSITORIES: MassIVE

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