کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5824 438 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The role of integrin α2 in cell and matrix therapy that improves perfusion, viability and function of infarcted myocardium
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
The role of integrin α2 in cell and matrix therapy that improves perfusion, viability and function of infarcted myocardium
چکیده انگلیسی

Injectable delivery matrices hold promise in enhancing engraftment and the overall efficacy of cardiac cell therapies; however, the mechanisms responsible remain largely unknown. Here we studied the interaction of a collagen matrix with circulating angiogenic cells (CACs) in a mouse myocardial infarction model. CACs + matrix treatment enhanced CAC engraftment, and improved myocardial perfusion, viability and function compared to cells or matrix alone. Integrin-linked kinase (ILK) was up-regulated in matrix-cultured CACs. Integrin α2β1 blocking prevented ILK up-regulation, significantly reduced the adhesion, proliferation, and paracrine properties of matrix-cultured CACs, and negated the benefits of CACs + matrix therapy in vivo. Furthermore, integrin α5 was essential for the angiogenic potential of CACs on matrix. These findings indicate that the synergistic therapeutic effect of CACs + matrix therapy in MI requires the matrix to enhance CAC function via α2β1 and α5 integrin signaling mechanisms, rather than simply delivering the cells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 35, Issue 17, June 2014, Pages 4749–4758
نویسندگان
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