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首页> 外文期刊>Biological chemistry >T47-D Cells and Type V Collagen: A Model for the Study of Apoptotic Gene Expression by Breast Cancer Cells
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T47-D Cells and Type V Collagen: A Model for the Study of Apoptotic Gene Expression by Breast Cancer Cells

机译:T47-D细胞和V型胶原:乳腺癌细胞凋亡基因表达研究的模型

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We have previously reported that type V collagen is a poorly adhesive, anti-proliferative and motility-inhibitory substrate for the 8701-BC breast cancer cell line, which also triggers DNA fragmentation and impairs survival of the same cell line. In the present work we have extended to other breast cancer cell lines (T47-D, MDA-MB231, Hs578T) our investigation of type V collagen influence on the DNA status and cell survival, also examining whether adhesion and growth of cells on this collagen substrate could exert some effect on the expression level of selected apoptosis-related genes. We report here that, among the cell lines tested, only T47-D is responsive to the death-promoting influence of type V collagen. In addition, the latter induces changes in gene expression by up-regulating p53, Waf-1, Cas, Dap kinase and caspases 1, -5 and -14 and down-regulating Bcl-2. Our data validate the T47-D line as a suitable in vitro model for further and more detailed studies on the molecular mechanisms of the death response induced by type V collagen on mammary tumor cells.
机译:我们以前曾报道过,对于8701-BC乳腺癌细胞系,V型胶原蛋白的粘附性,抗增殖性和运动抑制性差,这也会触发DNA断裂并损害同一细胞系的存活。在目前的工作中,我们已经扩展到其他乳腺癌细胞系(T47-D,MDA-MB231,Hs578T),我们研究了V型胶原蛋白对DNA状态和细胞存活的影响,还检查了细胞是否粘附和生长在该胶原蛋白上底物可能对所选凋亡相关基因的表达水平有一定影响。我们在这里报告,在测试的细胞系中,只有T47-D对V型胶原蛋白促进死亡的影响有反应。另外,后者通过上调p53,Waf-1,Cas,Dap激酶和胱天蛋白酶1,-5和-14以及下调Bcl-2来诱导基因表达的变化。我们的数据验证了T47-D系是合适的体外模型,可用于进一步更详细地研究V型胶原诱导的乳腺肿瘤细胞死亡反应的分子机制。

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