Cell attachment and spreading on extracellular matrix-coated beads.

Cell attachment and spreading on extracellular matrix-coated beads.
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细胞附着并铺展在细胞外基质包被的珠子上。

DOI:
10.1016/0014-4827(84)90652-9
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发表时间:
1984
影响因子:
3.7
通讯作者:
Chung,AE
Chung,AE
中科院分区:
医学3区
文献类型:
--
作者:
Mai,S;Chung,AE

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在cytodex 2珠上生长的壁卵黄囊细胞M1536-B3在珠的表面上沉积细胞外基质。通过用浓度为10 μg/ml的磷酸盐缓冲盐水(PBS)的细胞松弛素B(CB)处理细胞单层来分离无细胞基质包被的珠。当通过聚丙烯酰胺凝胶电泳(PAGE)分析时,基质显示主要成分是层粘连蛋白和巢蛋白。使用基质包被微珠研究非洲绿色猴BSC-40、人乳腺MCF-7、小鼠成纤维细胞L929、大鼠肝克隆9和大鼠肝癌H-4-II-E细胞在规定的无血清生长培养基中的附着、铺展和生长。不同的细胞系表现出不同的反应,基质包被与未包被的珠的附着率,扩散和生长。观察到的最一致的反应之一是基质包被的珠上细胞铺展的增强。结果表明,基质包被珠将提供一个容易获得的和有价值的工具,研究细胞表面-细胞外基质的相互作用和这些相互作用的生理后果。
Parietal yolk sac cells M1536-B3 grown on cytodex 2 beads deposited an extracellular matrix on the surface of the beads. Cell-free matrix-coated beads were isolated by treatment of the cell monolayer with cytochalasin B (CB) at a concentration of 10 μg/ml of phosphate-buffered saline (PBS). The matrix when analysed by electrophoresis on polyacrylamide gels (PAGE) revealed that the major components were laminin and entactin. The matrix-coated beads were used to study the attachment, spreading, and growth of African Green monkey BSC-40, human mammary MCF-7, mouse fibroblast L929, rat liver clone 9, and rat hepatoma H-4-II-E cells in defined serum-free growth medium. The different cell lines exhibited varying responses to matrix-coated vs uncoated beads with respect to rate of attachment, spreading, and growth. One of the most consistent responses observed was the enhancement of cell spreading on matrix-coated beads. The results suggested that the matrix-coated beads will provide a readily available and valuable tool for studies on cell surface-extracellular matrix interactions and the physiological consequences of those interactions.
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