Expression of KCNA5 Protein in Human Mammary Epithelial Cell Line Associated with Caveolin-1
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- 作者：Jia Liu ; Chao Qu ; Hongyan Li ; Yejun Zhang ; Jia Sun…
- 刊名：Journal of Membrane Biology
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：249
- 期：4
- 页码：449-457
- 全文大小：903 KB
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Biochemistry
Human Physiology - 出版者：Springer New York
- ISSN：1432-1424
- 卷排序：249
文摘
Voltage-gated potassium (Kv) channels are involved in the proliferation and transformation of mammary epithelial cells. They are thought to be related to the development of breast carcinoma, although the exact role they play in this event remains unclear. In this study, we investigated whether the expression and function of Kv channels is associated with Caveolin-1 (Cav-1, a principal component of caveolae) in different cell lines. We found that expression of Cav-1 correlated with the expression of Kv channels in mammary epithelial cells (MCF10A, MCF10A-ST1, and MCF7), and silencing of Cav-1 inhibited the expression of KCNA5 (voltage-gated shaker-related subfamily A, member 5). Immunofluorescence analysis indicated the colocalization of KCNA5 with Cav-1, whereas immunoprecipitation suggested a possible interaction between the two proteins. Overall, our finding indicated that KCNA5 protein may interact with Cav-1, thereby contributing to the proliferation and early transformation of mammary cells.KeywordsKCNA5 proteinCaveolin-1Human mammary epithelium cell line