NCBI GEO

NCBI GEO provides a public repository for high-throughput functional genomics data, including microarray and next-generation sequencing datasets, to enable storage, retrieval, and reanalysis.

Key Features:

• Affiliation: Hosted by the National Center for Biotechnology Information (NCBI).
• Data types: Stores microarray-based gene expression data and datasets generated by next-generation sequencing technologies.
• Repository scale: Houses over 20,000 microarray- and sequence-based functional genomics studies.
• Diverse experimental content: Accommodates genome copy number variation datasets and genome-wide profiling of DNA-binding proteins.
• Data model: Organizes records around platforms, samples, and series to represent probes, molecular abundance measurements, and experiment groupings respectively.
• Experimental scope: Supports heterogeneous datasets from high-throughput gene expression and genomic hybridization experiments.
• Data management: Facilitates submission, storage, and retrieval of functional genomics datasets.

Scientific Applications:

• Microarray data archiving: Provides long-term archival and access to microarray gene expression experiments for reuse and comparison.
• Sequencing-based functional genomics: Stores sequence-based functional genomics studies for downstream reanalysis and integration.
• Copy number variation studies: Archives genome copy number variation datasets for comparative genomic analyses.
• DNA-binding protein profiling: Hosts genome-wide profiling data of DNA-binding proteins for studies of transcriptional regulation.
• Reproducibility and publication support: Serves as a repository for dataset deposition associated with publication and reproducibility efforts.

Methodology:

Data are organized around three core entities—platforms (probe definitions), samples (molecular abundance measurements), and series (groupings of samples representing experiments)—to enable submission, storage, and retrieval of heterogeneous functional genomics datasets.