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首页> 外文期刊>International heart journal >Cardiac Fibroblast-Derived Extracellular Matrix Produced In Vitro Stimulates Growth and Metabolism of Cultured Ventricular Cells
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Cardiac Fibroblast-Derived Extracellular Matrix Produced In Vitro Stimulates Growth and Metabolism of Cultured Ventricular Cells

机译:体外产生的心脏成纤维细胞衍生的细胞外基质刺激培养的心室细胞的生长和代谢。

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Cardiac fibroblasts (CFs) produce extracellular matrix (ECM) which is a potent regulator of heart cell function and growth, and provides a supportive microenvironment for heart cells. Therefore, CF-derived ECM produced in vitro is very suitable for heart-cell culturing and cardiac tissue engineering. The aim of this study was to investigate the effect of CF-derived ECM produced in vitro on the growth and metabolism of cultured ventricular cells. CF-derived ECM-coated cell culture dishes were prepared by culturing rat CFs and then decellularizing the cultures. Isolated neonatal rat ventricular cells were seeded on ECM-coated, collagen I-coated or uncoated dishes, and the growth of cells after 1-5 days of culture was assayed with MTT reagent. In addition, cellular metabolic activity was analyzed by spectrophotometric methods and protein levels of sarco(endo)plasmic reticulum Ca2+-ATPase type 2a (SERCA2a) by Western blotting. The relative growth of ventricular cells was better on ECM-coated than on uncoated or collagen I-coated dishes. Furthermore, the glucose consumption ratio, lactic acid production ratio, Na+/K+-ATPase activity, SERCA activity and protein levels of SERCA2a were all higher in cells on the ECM-coated dishes. In conclusion, cardiac fi broblast-derived ECM produced in vitro stimulates the growth and metabolism of cultured ventricular cells. This study indicates that the bioactivity of the ECM supports heart cell growth in vitro , and this might be useful for cardiac tissue engineering.
机译:心脏成纤维细胞(CFs)产生细胞外基质(ECM),它是心脏细胞功能和生长的有效调节剂,并为心脏细胞提供了支持性微环境。因此,体外产生的CF衍生的ECM非常适合于心脏细胞培养和心脏组织工程。这项研究的目的是调查体外产生的CF衍生的ECM对培养的心室细胞生长和代谢的影响。通过培养大鼠CF,然后使培养物脱细胞来制备CF源的ECM包被的细胞培养皿。将分离的新生大鼠心室细胞接种在ECM包被的,I胶原包被的或未包被的培养皿上,并用MTT试剂测定培养1-5天后的细胞生长。此外,通过分光光度法分析细胞代谢活性,并通过蛋白质印迹法分析肌浆网中Ca 2 + -ATPase 2a型(SERCA2a)的蛋白水平。 ECM涂层的心室细胞的相对生长要好于未涂层或胶原I涂层的培养皿。此外,在ECM上的细胞中,葡萄糖消耗率,乳酸产生率,Na + / K + -ATPase活性,SERCA活性和SERCA2a蛋白水平均较高。涂层的盘子。总之,体外产生的源自心脏成纤维细胞的ECM刺激培养的心室细胞的生长和代谢。这项研究表明,ECM的生物活性在体外支持心脏细胞的生长,这可能对心脏组织工程有用。

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