Abstract
The transcriptomic profiles of human breast cancer cell lines MCF-7 and MDA-MB-435 were investigated using the next-generation RNA sequencing (RNA-Seq). The DESeq package was used to screen the differentially expressed transcripts. A total of 229 genes with a significantly differential expression in MDA-MB-435 cells as compared with MCF-7 cells were obtained. Annotation of the biological functions of these genes through the Database for Annotation, Visualization and Integrated Discovery (DAVID) v6.7 demonstrated that the 229 differentially expressed genes were mainly implicated in the biological functions related to cell adhesion and motion, antigen processing and presentation (via MHC class II), hormone response, extracellular structure organization, tissue remodeling, and cell proliferation regulation. Analysis of the individual genes demonstrated that MDA-MB-435 cells exhibited a higher tendency to metastasis and antigen processing and presentation, and lower ability to hormone response. Twenty most abundant transcripts in MDA-MB-435 cells, such as VIM, TNC, and CD74, represent its high potential for metastasis. Besides the genes previously reported to be involved in tumor metastasis and development, genes newly identified in this study could provide new clues for the diagnosis and prognosis of aggressive breast cancers.
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Published in Russian in Molekulyarnaya Biologiya, 2015, Vol. 49, No. 2, pp. 279–288.
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Wang, C.H., Gao, X.J., Liao, S.Y. et al. Transcriptome analysis of human breast cancer cell lines MCF-7 and MDA-MB-435 by RNA-Seq. Mol Biol 49, 244–252 (2015). https://doi.org/10.1134/S0026893315020144
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DOI: https://doi.org/10.1134/S0026893315020144