Dedifferentiated Adipocytes Improve Heart Function Post-Myocardial Infarction.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Background The development of pluripotent stem cell-based strategies for regenerative medicine offers hope of one day having a limitless source of therapeutic cells for the repairing of damaged cardiac tissue resulting from myocardial infarction (MI). Dedifferentiated adipose cells (DFAT) have recently gained attention in this regard for their in vitro and in vivo ability to express vascular and cardiac-specific markers. To date, there is limited knowledge with respect to their capacity to improve cardiac function and contractility when introduced into the myocardium after the onset of MI. To that end, this study investigated the in vivo potential of intramyocardially injected mouse DFAT (mDFAT) cells to differentiate towards cardiovascular lineages and enhance cardiac function in a murine model of MI. Methods Mature adipocytes were harvested from GFP-transgenic mice and dedifferentiated in vitro to produce pluripotent mDFAT cells. Mice that underwent LAD ligation surgery were injected intramyocardially with a dose of therapeutic mDFAT cells (n=6) shortly after the confirmation of successful MI. Results Consistent with previous findings by the authors, we observed an immunofluorescent stain pattern in the infarct area of mDFAT cells adjacent to or co-localized with Troponin T, Cx-43, CD31, isolectin B4 and α-SMA up to eight weeks after cell transplantation. Furthermore, echocar

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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