成年小鼠心肌细胞腺病毒转染及缺氧/复氧诱导损伤模型的建立
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1.西安交通大学心血管研究中心;2.西安交通大学心血管研究中心, 西安交通大学第一附属医院心血管内科;3.西安交通大学第一附属医院周围血管科;4.西安交通大学第一附属医院周围血管科,西安交通大学心血管研究中心;5.西安交通大学第一附属医院周围血管科,西安交通大学第一附属医院心血管内科;6.西安交通大学第一附属医院周围血管科,西安交通大学心血管研究中心,西安交通大学第一附属医院心血管内科

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国家自然科学基金青年基金(81900256),西安交大一附院院基金(2018QN-04)


The models of adenoviral transfection and hypoxia/reoxygenation-induced injury in AMCMs
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1.Cardiovascular Research Center, Xi'2.'3.an Jiaotong University;4.1. Cardiovascular Research Center, Xi'5.an Jiaotong University, 2. Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'6.Department of Peripheral Vascular,The First Affiliated Hospital of Xi'7.an Jiaotong University,Xi’an;8.1.Department of Peripheral Vascular,The First Affiliated Hospital of Xi'9.2.Cardiovascular Research Center, Xi'10.1. Department of Peripheral Vascular, The First Affiliated Hospital of Xi'11.an Jiaotong University, 2. Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'12.an Jiaotong University.;13.an Jiaotong University, 2. Cardiovascular Research Center, Xi'14.an Jiaotong University, 3. Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'

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Funded by National Natural Science Foundation of China (81900256), Research and Development Fund of The First Affiliated Hospital of Xi’an Jiaotong University (2018QN-04)

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    摘要:

    目的 采用非Langendorff方法分离成年小鼠心肌细胞(adult mouse cardiomyocytes, AMCMs),并建立腺病毒转染及缺氧/复氧诱导细胞损伤模型,为应用AMCMs进行心肌缺血体外实验的研究提供便捷、实用、可操作性强的系统方法。方法 应用非Langendorff方法分离AMCMs,观察贴壁后2 h、24 h、48 h及72 h细胞的形态,计算存活率;应用腺病毒转染AMCMs,观察并统计转染36 h、48 h后的转染效率;通过缺氧45 min/复氧24 h,进行碘化丙啶(ropidium iodide,PI)染色,统计PI阳性细胞率以明确缺氧/复氧损伤模型的建立。结果 与AMCMs贴壁后2 h相比,贴壁后24 h和48 h的细胞存活率无显著下降,贴壁后72 h的细胞存活率显著下降;AMCMs可进行腺病毒转染,36 h和48 h转染效率分别可达82.07±0.60%和82.84±1.18%;缺氧/复氧诱导AMCMs可成功建立细胞损伤模型,PI染色阳性细胞达42.28±3.10%。结论 本研究应用非Langendorff方法分离培养的AMCMs,细胞存活率高,并建立腺病毒转染和缺氧/复氧诱导细胞损伤模型,为体外建立AMCMs基因修饰、缺氧/复氧损伤模型提供了简单易行的系统方法。

    Abstract:

    Objective To build the models of viral transfection and hypoxia-reoxygenation induced cellular injury in AMCMs which are isolated by a non-Langendorff method. Methods AMCMs were isolated, extracted, sedimented and wall-plated by a non-Langendorff method. The morphology and survival rate of isolated cells was evaluated at 2 h, 24 h, 48 h and 72 h after wall-plating. The isolated AMCMs were infected with adenoviruses carrying RFP-expressing vector. Fluorescence photographs were taken at 36 h and 48 h post infection and used for calculation of transfection efficiency. The cells were cultured under hypoxic for 45 min and reoxygenated for 24 h. The cells were then stained with propidium iodide (PI) to verify the establishment of hypoxia-reoxygenation injury model. Results the survival rate of AMCMs at 2 h, 24 h and 48 h after plating were comparable, whereas this number at 72 h was significantly reduced. More than 80% of cells were transfected with adenovirus at 48 h. The hypoxia-reoxygenation treatment induced 42% of cells stained by PI, suggesting successful establishment of AMCMs injury model. Conclusions In this study, we developed a non-Langendorff method for quickly and easily isolating AMCMs with high cell viability. The isolated cells can be efficiently infected with adenovirus and are response to hypoxia-reoxygenation injury. Our findings provide a systematic method for isolating AMCMs as well as gene modification and hypoxia-reoxygenation injury in these cells.

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  • 收稿日期:2023-10-24
  • 最后修改日期:2024-03-18
  • 录用日期:2024-03-18
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