GEO series

Analysis of HeLa cells after transfection with miR-1 or miR-155, by microarray profiling

GSE22002 Homo sapiens (human) Expression microarray 6 samples Submitted 2010/08/03 Platform GPL570

At a glance

Expression microarray · human · 6 samples

What it is: Expression microarrayGene activity read on a chip (the older technology that RNA-seq replaced).
Organism: Homo sapiens (human)
Samples: 6 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 endogenous ~22-nucleotide RNAs that mediate important gene-regulatory events by pairing to the mRNAs of protein-coding genes to direct their repression. Repression of these regulatory targets leads to decreased translational efficiency and/or decreased mRNA levels, but the relative contributions of these two outcomes have been largely unknown, particularly for endogenous targets expressed at low-to-moderate levels.

Read the full summary ↓

Here, we use ribosome profiling to measure the overall effects on protein production and compare these to simultaneously measured effects on mRNA levels. For both ectopic and endogenous miRNA regulatory interactions, lowered mRNA levels account for most (≥84%) of the decreased protein production. These results show that changes in mRNA levels closely reflect the impact of miRNAs on gene expression and indicate that destabilization of target mRNAs is the predominant reason for reduced protein output.

This dataset

Open GSE22002 in finder → Find more human microarray datasets →

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 (GSE22002_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 PRJNA129165. Searching any of these in the dataset finder brings you back here.

NCBI GEO page ↗ Paper (PMID 20703300) ↗

Samples in this study

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+ 6 more — browse all 6 samples with per-sample file links →

Datasets on a similar topic

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GSE23905 miR-126 over-expression in highly metastatic LM2 breast cancer cells. 8 samples shares mir-1
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GSE259372 Analysis of a pair of HCA-7 derived cells with low expressing (CC) or high expressing (CC-CR) levels of miR-100 and miR-125b and RNA collected from Ago2 RNA immunoprecipitation 22 samples shares mir-1
GSE262978 Transcriptome profiling of cartilage progenitor cells over-expressing miR-138 or miR-181a/b-1 during chondrogenic induction 12 samples shares mir-1
GSE259370 Analysis of a pair of HCA-7 derived cells with low expressing (CC) or high expressing (CC-CR) levels of miR-100 and miR-125b and RNA collected from Ago2 RNA immunoprecipitation (RNAseq_human_AGO2_IP.8635) 11 samples shares mir-1

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