Multilayered adipose-derived regenerative cell sheets created by a novel magnetite tissue engineering method for myocardial infarction

INTERNATIONAL JOURNAL OF CARDIOLOGY

卷:175

Article

Ouchi, Noriyuki¹  Tanigawa, Tohru²  Ito, Akira³  Honda, Hiroyuki⁴ 

[1] Nagoya Univ, Dept Mol Cardiol, Grad Sch Med, Nagoya, Aichi 4668550, Japan

[2] Aichi Med Univ, Dept Otolaryngol, Nagakute, Aichi, Japan

[3] Kyushu Univ, Dept Chem Engn, Fac Engn, Fukuoka 812, Japan

[4] Nagoya Univ, Dept Biotechnol, Grad Sch Med, Nagoya, Aichi 4668550, Japan

关键词: Stem cell;    Tissue engineering;    Myocardial infarction;    Adipose-derived regenerative cells;    Magnetic nanoparticle;   

DOI  :  10.1016/j.ijcard.2014.06.034

来源: Elsevier

【 摘 要 】

Background: Adipose-derived regenerative cells (ADRCs) are a promising source of autologous stem cells for regeneration and repair of damaged tissue. Herein, we investigated the therapeutic potential of ADRC sheets created by a magnetite tissue engineering technology (Mag-TE) for myocardial infarction. Methods and results: Adipose tissue was obtained from wild-type (WT) mice and ADRCs were isolated. ADRCs incubated with magnetic nanoparticle-containing liposomes (MCLs) were cultured. MCL-labeled ADRCs were mixed with a diluted extracellular matrix (ECM) precursor, and a magnet was placed on the reverse side. Magnetized ADRCs formed multilayered cell sheets after a 24-h incubation. WT mice were subjected to myocardial infarction by permanent ligation of the left anterior descending artery. We then transplanted the constructed ADRC sheet or a cell-free collagen gel sheet, as a control, onto the infarcted myocardium using an Alnico magnet before skin closure. Cardiac parameters were measured by echocardiogram, and angiogenesis was determined by tissue capillary density. ADRC sheet-treated mice showed significant improvements in systolic function, infarct wall thinning, and fibrotic length after myocardial infarction. ADRC sheet implantation also promoted angiogenesis in both the infarct area and the border zone in WT mice after myocardial infarction. The angiogenic effects of ADRC sheets were attributed to an increased expression of VEGF and bFGF mRNA in ischemic hearts. Conclusions: ADRC sheets created by this Mag-TE method protect the heart against pathological cardiac remodeling. Our ADRC sheets have the potential to be a novel regenerative strategy for ischemic heart disease. (C) 2014 Elsevier Ireland. Ltd. All rights reserved.

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