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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

ORGANISM(S): Homo sapiens

PROVIDER: GSE16554 | GEO | 2010/06/01

SECONDARY ACCESSION(S): PRJNA116183

REPOSITORIES: GEO

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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 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.

2010-06-08 | E-GEOD-16554 | biostudies-arrayexpress

MicroRNAome of highly metastatic and non-metastatic human breast cell lines

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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Transcription profiling of human parental parental line MDA-MB-231 and fusion cell lines indicates hybrids assimilate organ-specific metastasis gene signatures from both parental cells

Project description:Spontaneous cell fusion of MDA-MB-231 bone-metastatic subline Bm (i.e., SCP2) and lung metastatic subline Lm (i.e., LM2) gave rise to hybrid lines BLm-FACS or BLm-DRUG, as well as its single clones (#8, #12, #18). The hybrids acquired the metastasis tropisms from both parental cells. Expression profiles of the parental cells, the hybrids and several previously characterized MDA-MB-231 metastatic derivatives were compared. Hierarchical clustering showed the hybrids assimilated the organ-specific metastasis gene signatures from both parental cells. Experiment Overall Design: Twenty-six cell lines were analyzed, including the parental line MDA-MB-231; cell fusion partner lines Bm and Lm; self-fused lines BBm and LLm; hetero-fused lines BLm-FACS, BLM-DRUG and clones BLm-DRUG-8, -12 and -18; strongly bone-metastatic lines 1833, SCP14, SCP20, SCP25 and SCP46; strongly lung-metastatic lines 3481, 4142, 4173, 4175 and 4180; and weakly metastatic lines SCP3, SCP4, SCP6, SCP28, SCP32 and SCP43. Single sample for each line.

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Project description:Two MDA-MB-231 sublines, SCP2 and LM2 (4175), were applied to low oxygen (1%) for 0, 6 and 24 hours, then profiled for RNA expression.

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Hypoxia response by human breast cancer cell MDA-MB-231 sublines

Project description:Two MDA-MB-231 sublines, SCP2 and LM2 (4175), were applied to low oxygen (1%) for 0, 6 and 24 hours, then profiled for RNA expression. Two sublines, each sublines has three conditions: 0h, 6h and 24h for hypoxia treatment. Each condition has two repeats. Total 12 samples

2010-06-16 | E-GEOD-17188 | biostudies-arrayexpress

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Project description:We report the gene expression patterns in MDA-MB-231 (a line selected for low metastatic ability), MDA-MB-231-1833 (its bone-tropic metastatic derivative line), MDA-MB-231p27CK-DD (a phosphomimetic cell line), MDA-MB-231-1833shp27 (p27 knockdown cell line), MDA-MB-231-1833PF1502 (PI3K inhibitor treatment). It shows that the gene expression pattern are regulated in a p27 phosphorylation-dependent manner.

2019-03-19 | GSE112445 | GEO

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Project description:LM2-4175 cell line was originally selected from MDA-MB-231,but has more aggressive characteristics in invasion, migration and metastasis. In addition, LM2 cell line specifically metastasizes to lung. To understand the regulatory mechanisms of lung metastasis in breast cancer, we analyzed the chromatin structure of MDA-MB-231 and LM2-4175 cell lines.

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Next generation sequencing analysis of transcriptomes in MDA-MB-231 and LM2-4175 cell lines

Project description:LM2-4175 cell line was originally selected from MDA-MB-231,but has more aggressive characteristics in invasion, migration and metastasis. In addition, LM2 cell line specifically metastasizes to lung. To understand the melecular mechanisms of lung metastasis in breast cancer,we analyzed the RNA-seq data of MDA-MB-231 and LM2-4175 cell lines.

2019-07-31 | GSE124380 | GEO

Identification of circRNA Expression Signatures for breast cancer metastasis

Project description:To identify breast cancer metastasis-relevant circRNAs, we assessed the expression profiles of circRNAs in parental MDA-MB-231 (231-PAR) cells, isogenic brain metastatic cells (231-BM6), lung metastatic cells (LM2) and bone metastatic cells (1833), which were isolated from brain, lung or bone-seeking 231-PAR cells

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Project description:To discover the potential drivers of TNBC metastasis, we established an in vivo model by injecting MDA-MB-231cells into the tail veins of mice. Then, the breast tumor cells that successfully grew into metastatic lung tumors were collected and expanded in vitro, followed by re-injected into the tail veins of mice for lung metastasis. After three rounds of selection, a highly metastatic subline, MDA-MB-231-P3, was established, and more frequent micro-metastasis was detected in MDA-MB-231-P3 groups than that of MDA-MB-231 groups when the lungs of mice were stained with hematoxylin and eosin (HE). The lncRNA profiles of MDA-MB-231 or MDA-MB-231-P3 cells were analyzed by lncRNA sequencing. A total of 267 lncRNAs in MDA-MB-231-P3 cells were upregulated more than 2-fold in comparison to the MDA-MB-231 cells.

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