Transcriptomic Characterization, Chemosensitivity and Regulatory Effects of Exosomes in Spontaneous EMT/MET Transitions of Breast Cancer Cells.

ABSTRACT: BACKGROUND/AIM:We examined the gene expression changes of breast cancer cells spontaneously undergoing epithelial-mesenchymal transition (EMT) and its reverse process mesenchymal-epithelial transition (MET) and the role of exosomes in these transitions. MATERIALS AND METHODS:Highly invasive mesenchymal-like breast cancer cells, MDA-MB-231 (basal cells), EMT and MET variants, were characterized by microarray gene expression profiling, immunocytochemistry and chemo-sensitivity. RESULTS:Spontaneously disseminated cells were anoikis resistant, exhibited a dissociative, EMT-like phenotype and underwent MET when reseeded in cell-free plates. MET was inhibited by exosomes secreted by basal cells. Chemo-sensitivity to doxorubicin, vincristine and paclitaxel decreased in the order EMT

SUBMITTER: Bigagli E 

PROVIDER: S-EPMC6542641 | biostudies-literature | 2019 May-Jun

REPOSITORIES: biostudies-literature