miReg: a resource for microRNA regulation.

Area of Science:

• Molecular Biology
• Bioinformatics
• Genetics

Background:

• MicroRNAs (miRNAs) are key posttranscriptional gene regulators; their dysregulation is linked to various diseases.
• Existing miRNA databases primarily focus on targets, sequences, or diseases, lacking a holistic view of regulatory networks.
• Understanding upstream and downstream miRNA regulation is crucial for disease research.

Purpose of the Study:

• To develop a comprehensive, manually curated web resource (miReg) for miRNA regulation.
• To integrate information on upstream regulators, downstream targets, and associated biological contexts for miRNAs.
• To provide a user-friendly platform for exploring miRNA regulatory networks.

Main Methods:

• Manual curation of validated upstream regulators (transcription factors, drugs, chemicals) and downstream targets.
• Data organization including biological processes, experimental conditions, disease states, and miRNA regulation (up/down).
• Integration of PubMed references and links for comprehensive data exploration.

Main Results:

• The miReg database (Version 1.0) contains 47 human miRNAs and 295 validated regulatory relations from 190 references.
• The resource presents regulatory facts, including feedback/feed-forward loops and activation/inhibition.
• An example demonstrates miReg's utility in elucidating signaling pathways in cardiomyopathy.

Conclusions:

• miReg provides a unique, integrated view of miRNA regulatory networks, addressing a gap in current bioinformatics resources.
• The database serves as an essential knowledge base for researchers studying miRNA functions and disease mechanisms.
• Continuous updates and data enrichment will enhance miReg's value to the scientific community.