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Interleukin-10 aids survival of cells transplanted to repair cardiac tissues after MI
Date:7/18/2014

Putnam Valley, NY. (July 18th 2014) The long-term, positive benefits of transplanted allogenic (other-donated) smooth muscle cells (SMCs) to repair cardiac tissues after myocardial infarction (MI) have been enhanced by the addition of interleukin 10 (IL-10) to the transplanted cells, report researchers in Canada. Their study with rats modeled with MI has shown that SMCs modified with IL-10 - a small, anti-inflammatory protein - benefitted cell survival, improved heart function, and also provided protection against the host's rejection of the allogenic SMCs.

The study will be published in a future issue of Cell Transplantation and is currently freely available on-line as an unedited early e-pub at: http://www.ingentaconnect.com/content/cog/ct/pre-prints/content-CT1170Dhingra.

Three groups of rats modeled with MI were treated with SMC injections into the MI-damaged area of the heart. One group received unmodified autologous (self-donated) SMCs; a second group received unmodified allogenic (other-donated) SMCs; the third group received allogenic SMCs modified with IL-10. After three weeks, the unmodified autologous cells had engrafted while the unmodified allogenic cells had been rejected by the hosts. However, the IL-10-modified allogenic cells were found to greatly improve cell survival, improve ventricular function, increase myocardial wall thickness, and also prevent host immune response and rejection of the foreign cells.

"While the most appropriate cell type for cardiac repair remains controversial, mesenchymal stem cells (MSCs) that have been differentiated toward myogenic cells restore ventricular function better, as previous studies have shown," said study co-author Ren-Ke Li of the MaRS Centre in Toronto, Canada. "This study demonstrated that IL-10 gene-enhanced cell therapy prevented immune response, increase
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Contact: Robert Miranda
cogcomm@aol.com
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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