GEO series

The microRNAs miR-373 and miR-520c promote tumor migration, invasion and metastasis

GSE9742 Homo sapiens (human) Expression microarray 9 samples Submitted 2007/12/04 Platform GPL6171

At a glance

Expression microarray · human · 9 samples

What it is: Expression microarrayGene activity read on a chip (the older technology that RNA-seq replaced).
Organism: Homo sapiens (human)
Samples: 9 samples
Data you can get: A processed expression table (series matrix) and the array files, from NCBI.

Summary (written by the submitters)

MicroRNAs (miRNAs) are single-stranded noncoding RNAs that play important roles in many biological processes. Although the oncogenic and tumor suppressive functions of several miRNAs have been characterized, the role of miRNAs in mediating tumor metastasis was only recently addressed and still remain largely unexplored. To identify potential metastasis-promoting miRNAs, we set up a genetic screen using a non-metastatic human breast tumor cell line that was transduced with a miRNA expression library and subjected to a trans-well migration assay.

Read the full summary ↓

We found human miR-373 and 520c to stimulate cancer cell migration as well as tumor cell invasion in vitro and in vivo, and that certain cancer cell lines depend on endogenous miR-373 activity to migrate efficiently. Mechanistically, the migration phenotype of miR-373 and miR-520c can be explained by their suppression of CD44 expression. Finally, we found significant up-regulation of miR-373 expression in clinical breast cancer primary and metastasis samples that inversely correlated with CD44 expression. Taken together, our study indicates that miRNAs are involved in tumor migration and invasion and implicates miR-373 and conceivably miR-520c as metastasis-promoting miRNAs. Keywords: human breast cancer cell MCF7 vs MCF7 expressing miR-373 vs MCF7 expressing miR-520c

This dataset

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Download · which file do I need?

Direct links to NCBI, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

Series matrix ↓

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need.

All supplementary files ↗

3 · The original raw files

Whole study · RAW.tar

Everything the authors deposited as one archive (GSE9742_RAW.tar), including the raw array or instrument files. Can be large; the picker in step 2 takes just the samples you need.

Whole study · RAW.tar ↓

What the files usually look like: For arrays the series matrix is normally the normalised expression table you want; the raw array files (CEL and similar) are in the RAW.tar.

Also filed as BioProject PRJNA103659. Searching any of these in the dataset finder brings you back here.

NCBI GEO page ↗ Paper (PMID 18193036) ↗

Samples in this study

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+ 9 more — browse all 9 samples with per-sample file links →

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