Journal of molecular and cellular cardiology · 2022
Cardiac injection of USSC boosts remuscularization of the infarcted heart by shaping the T-cell response.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Ding Zhaoping, Tan Kezhe, Alter Christina, Temme Sebastian, Bouvain Pascal, Owenier Christoph, Hänsch Sebastian, Wesselborg Sebastian, Peter Christoph, Weidtkamp-Peters Stefanie, Flögel Ulrich, Schira-Heinen Jessica, Stühler Kai, Hesse Julia, Kögler Gesine, Schrader Jürgen
Аннотация
Regenerating the injured heart remains one of the most vexing challenges in cardiovascular medicine. Cell therapy has shown potential for treatment of myocardial infarction, but low cell retention so far has limited its success. Here we show that intramyocardial injection of highly apoptosis-resistant unrestricted somatic stem cells (USSC) into infarcted rat hearts resulted in an unprecedented thickening of the left ventricular wall with cTnT+/BrdU+ cardiomyocytes that was paralleled by progressively restored ejection fraction. USSC induced significant T-cell enrichment in ischemic tissue with enhanced expression of T-cell related cytokines. Inhibition of T-cell activation by anti-CD28 monoclonal antibody, fully abolished the regenerative response which was restored by adoptive T-cell transfer. Secretome analysis of USSC and lineage tracing studies suggest that USSC secrete paracrine factors over an extended period of time which boosts a T-cell driven endogenous regenerative response mainly from adult cardiomyocytes.