A novel functional assessment of the differentiation of micropatterned muscle cells.

A novel functional assessment of the differentiation of micropatterned muscle cells.
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DOI:
10.1016/j.jbiomech.2008.09.025
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发表时间:
2008-12-05
影响因子:
2.4
通讯作者:
Wang, James H. -C.
Wang, James H. -C.
中科院分区:
工程技术3区
文献类型:
--
作者:
Li, Bin;Lin, Michael;Tang, Ying;Wang, Bing;Wang, James H. -C.

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杜氏肌营养不良症(DMD)是一种致命的疾病,其特征是快速,进行性萎缩的肌肉组织。及时筛选治疗干预措施对于DMD有效治疗方法的发展是必要的。我们已经开发了一种体外模型,使用C2 C12骨骼肌细胞和细胞牵引力显微镜(CTFM)的微图案的组合。在该模型中,C2 C12细胞在高度伸长的粘附岛上微图案化,使得细胞呈现典型的肌管形状。在分化过程中,这些细胞逐渐融合在一起,并开始表达肌营养不良蛋白(肌管的一种结构蛋白);同时,它们的收缩力(以细胞牵引力为代表)不断增加,直到肌管成熟。此外,细胞的高度排列有利于肌管分化和肌营养不良蛋白的表达。由于肌肉组织的基本结构单位是负责肌肉收缩的肌纤维,因此可以直接量化肌管(肌纤维的前体)的收缩力的这种技术可以构成DMD疗法的快速且有效的筛选方法。
Duchenne muscular dystrophy (DMD) is a lethal disease characterized by rapid, progressive atrophy of muscle tissues. Timely screening of therapeutic interventions is necessary for the development of effective treatment approaches for DMD. We have developed an in vitro model using a combination of micropatterning of C2C12 skeletal muscle cells and cell traction force microscopy (CTFM). In this model, C2C12 cells were micropatterned on a highly elongated adhesive island such that the cells assumed a shape typical of a myotube. During differentiation, these cells gradually fused together and began expressing dystrophin, a structural protein of myotubes; meanwhile, their contractile forces, represented by cell traction forces, continually increased until the myotubes reached maturation. In addition, the high-degree alignment of cells favored myotube differentiation and dystrophin expression. Since the fundamental structural unit of muscle tissue is myofiber, which is responsible for muscle contraction, such a technology that can directly quantify the contractile forces of the myotube, a precursor of myofiber, may constitute a fast and efficient screening approach for DMD therapies.
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