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Enhancement of metastasis by spontaneous ploidy doubling of breast cancer cell MDA-MB-231.

ABSTRACT: MDA-MB-231 bone-metastatic subline 1833 and lung metastatic subline 4175 underwent spontaneous ploidy doubling in culture, i.e. the genome approximately duplicated itself gradually. The modal- and hyper-ploid subpopulations during the ploidy transition were sorted into two separate sublines, 1833-Modal and 1833-Hyper for 1833, 4175-Modal and 4175-Hyper for 4175. Their expresssion patterns were compared to each other as well as to other MDA-MB-231 sublines isolated previously by Kang et al. 2003 and Minn et al. 2005. Keywords: Cell type comparison 19 cell lines were analyzed, including the parental line MDA-MB-231, modal-ploid sublines 1833-Modal and 4175-Modal, hyper-ploid sublines 1833-Hyper and 4175-Hyper, strongly bone-metastatic lines 1833 (the original subline after short culture), 2274, 2268 and 2269, weakly bone-metastatic lines 2293, 2295 and 2297, strongly lung-metastaic lines 4142, 4173, 4175 (the original subline after short culture) and 4180, and weakly lung-metastatic lines SCP6, SCP21 and SCP26. Single sample for each line.

ORGANISM(S): Homo sapiens

SUBMITTER: Yibin Kang

PROVIDER: E-GEOD-16554 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Enhancement of metastasis by spontaneous ploidy doubling of breast cancer cell MDA-MB-231.

Project description:MDA-MB-231 bone-metastatic subline 1833 and lung metastatic subline 4175 underwent spontaneous ploidy doubling in culture, i.e. the genome approximately duplicated itself gradually. The modal- and hyper-ploid subpopulations during the ploidy transition were sorted into two separate sublines, 1833-Modal and 1833-Hyper for 1833, 4175-Modal and 4175-Hyper for 4175. Their expresssion patterns were compared to each other as well as to other MDA-MB-231 sublines isolated previously by Kang et al. 2003 and Minn et al. 2005. Keywords: Cell type comparison

2010-06-01 | GSE16554 | GEO

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2009-05-16 | E-GEOD-14244 | biostudies-arrayexpress

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Project description:MicroRNAs are noncoding, endogenous small RNAs that regulate target genes by cleavage of the targeted mRNA or translational repression. We investigated the microRNAome using 2-color microarrays in a highly invasive human breast cancer cell line, MDA-MB-231 (sub line 4175) and a non-invasive breast epithelial cell line, MCF10A. We found 13 miRNAs that were up-regulated and 9 were down-regulated significantly in 4175 cells (p <0.05, fold change >2) compared with MCF10A cells. We compared the highly metastatic human breast cell lines MDA-MB-231 (4175 subline) with non-metastatic MCF10A cell lines. Two 4175 sublines and two MCF10A cell lines, independently grown and harvested. Dye swap was performed.

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