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Engineering Murine Adipocytes and Skeletal Muscle Cells in Meat-like Constructs Using Self-Assembled Layer-by-Layer Biofabrication: A Platform for Development of Cultivated Meat
Cells Tissues Organs ( IF 2.9 ) Pub Date : 2021-01-13 , DOI: 10.1159/000511764
Alireza Shahin-Shamsabadi 1 , P Ravi Selvaganapathy 2, 3
Affiliation  

Global meat consumption has been growing on a per capita basis over the past 20 years resulting in ever-increasing devotion of resources in the form of arable land and potable water to animal husbandry which is unsustainable and inefficient. One approach to meet this insatiable demand is to use biofabrication methods used in tissue engineering in order to make skeletal muscle tissue-like constructs known as cultivated meat to be used as a food source. Here, we demonstrate the use of a scaffold-free biofabrication method that forms cell sheets composed of murine adipocytes and skeletal muscle cells and assembles these sheets in parallel to create a 3D meat-like construct without the use of any exogenous materials. This layer-by-layer self-assembly and stacking process is fast (4 days of culture to form sheets and few hours for assembly) and scalable (stable sheets with diameters >3 cm are formed). Tissues formed with only muscle cells were equivalent to lean meat with comparable protein and fat contents (lean beef had 1.5 and 0.9 times protein and fat, respectively, as our constructs) and incorporating adipocyte cells in different ratios to myoblasts and/or treatment with different media cocktails resulted in a 5% (low fat meat) to 35% (high fat meat) increase in the fat content. Not only such constructs can be used as cultivated meat, they can also be used as skeletal muscle models.

中文翻译:

使用自组装的逐层生物制造技术在肉样结构中工程化小鼠脂肪细胞和骨骼肌细胞:培养肉的开发平台

在过去的 20 年中,全球人均肉类消费量一直在增长,导致以耕地和饮用水形式的资源越来越多地投入到畜牧业,这是不可持续和低效的。满足这种永不满足的需求的一种方法是使用组织工程中使用的生物制造方法,以制造称为人造肉的骨骼肌组织样结构,用作食物来源。在这里,我们演示了使用无支架生物制造方法,该方法形成由小鼠脂肪细胞和骨骼肌细胞组成的细胞片,并在不使用任何外源材料的情况下并行组装这些片以创建 3D 肉状结构。这种逐层自组装和堆叠过程快速(4 天培养形成片材,几小时组装)和可扩展(形成直径 >3 厘米的稳定片材)。仅由肌肉细胞形成的组织相当于蛋白质和脂肪含量相当的瘦肉(瘦牛肉的蛋白质和脂肪分别是我们的构建体的 1.5 倍和 0.9 倍),并以不同的比例将脂肪细胞与成肌细胞和/或用不同的处理媒体鸡尾酒导致脂肪含量增加 5%(低脂肪肉)至 35%(高脂肪肉)。这种结构不仅可以用作栽培肉,还可以用作骨骼肌模型。仅由肌肉细胞形成的组织相当于蛋白质和脂肪含量相当的瘦肉(瘦牛肉的蛋白质和脂肪分别是我们的构建体的 1.5 倍和 0.9 倍),并以不同的比例将脂肪细胞与成肌细胞和/或用不同的处理媒体鸡尾酒导致脂肪含量增加 5%(低脂肪肉)至 35%(高脂肪肉)。这种结构不仅可以用作栽培肉,还可以用作骨骼肌模型。仅由肌肉细胞形成的组织相当于蛋白质和脂肪含量相当的瘦肉(瘦牛肉的蛋白质和脂肪分别是我们的构建体的 1.5 倍和 0.9 倍),并以不同的比例将脂肪细胞与成肌细胞和/或用不同的处理媒体鸡尾酒导致脂肪含量增加 5%(低脂肪肉)至 35%(高脂肪肉)。这种结构不仅可以用作栽培肉,还可以用作骨骼肌模型。
更新日期:2021-01-13
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