Liang Qiao1, Yan Kong1, Yingshen Shi1, Aijun Sun1, Ruijuan Ji1, Chao Huang1, Yuquan Li2, Xiangqun Yang3. 1. Department of Anatomy, Institute of Biomedical Engineering, Naval Medical University, Shanghai, 200433, China. 2. Department of Anatomy, Institute of Biomedical Engineering, Naval Medical University, Shanghai, 200433, China. Electronic address: liyuquanf@163.com. 3. Department of Anatomy, Institute of Biomedical Engineering, Naval Medical University, Shanghai, 200433, China. Electronic address: yangxq_sh@126.com.
Abstract
AIMS: The aims of the study are to investigate whether the combination of adipose-derived stem cells (ADSCs) with decellularized extracellular matrix (dECM) of myocardium can exert synergistic therapeutic effects on acute MI and the underlying mechanism. MAIN METHODS: Myocardial dECM from fresh porcine myocardium was prepared in an injectable gel, ADSCs were seeded into the myocardial dECM gels, and then the mixture was injected into the myocardium of the infarct border zone after acute MI, which was induced by ligating the left anterior descending coronary artery in male SD rats, to assess the therapeutic potential. The degree of fibrosis was detected by Masson's trichrome. The evaluation of cardiac function was performed by Electrocardiography. KEY FINDINGS: Myocardial dECM (2.0%) had a suitable aperture and arrangement for cell growth, and also exhibited suitable biomechanical properties. Four-weeks after treatment in vivo, the combination of ADSCs and myocardial dECM could obviously increase angiogenesis, reduce the degree of fibrosis, and decrease infarct size. Furthermore, the combination treatment exerted significant functional improvement. Compared with ADSCs or dECM group alone, the left ventricular ejection fraction (LVEF) in the combination group was 13.4% and 21.8% elevated, respectively. SIGNIFICANCE: The combination of ADSCs and myocardial dECM has synergistic effects on cardiac repair in acute MI.
AIMS: The aims of the study are to investigate whether the combination of adipose-derived stem cells (ADSCs) with decellularized extracellular matrix (dECM) of myocardium can exert synergistic therapeutic effects on acute MI and the underlying mechanism. MAIN METHODS: Myocardial dECM from fresh porcine myocardium was prepared in an injectable gel, ADSCs were seeded into the myocardial dECM gels, and then the mixture was injected into the myocardium of the infarct border zone after acute MI, which was induced by ligating the left anterior descending coronary artery in male SD rats, to assess the therapeutic potential. The degree of fibrosis was detected by Masson's trichrome. The evaluation of cardiac function was performed by Electrocardiography. KEY FINDINGS: Myocardial dECM (2.0%) had a suitable aperture and arrangement for cell growth, and also exhibited suitable biomechanical properties. Four-weeks after treatment in vivo, the combination of ADSCs and myocardial dECM could obviously increase angiogenesis, reduce the degree of fibrosis, and decrease infarct size. Furthermore, the combination treatment exerted significant functional improvement. Compared with ADSCs or dECM group alone, the left ventricular ejection fraction (LVEF) in the combination group was 13.4% and 21.8% elevated, respectively. SIGNIFICANCE: The combination of ADSCs and myocardial dECM has synergistic effects on cardiac repair in acute MI.