PopTargs: a database for studying population evolutionary genetics of human microRNA target sites

Area of Science:

• Genomics and Bioinformatics
• Molecular Biology
• Population Genetics

Background:

• Growing interest in polymorphic variants within gene regulatory elements, particularly microRNA target sites.
• Need for integrated analysis of multiple datasets (e.g., expression levels, evolutionary conservation) to understand selective forces on microRNA targets.
• Challenges in studying microRNA target site variations due to data fragmentation.

Purpose of the Study:

• To build a comprehensive database for studying microRNA targets in human populations.
• To develop a web-based tool (PopTargs) for easy extraction and joint analysis of multiple relevant datasets.
• To facilitate the study of allele frequencies, population differentiation, and site conservation at microRNA target sites.

Main Methods:

• Compilation of information from multiple sources regarding microRNA target sites.
• Comparison with predicted microRNA target sites to construct the database.
• Development of a web tool enabling joint analysis of allele frequencies, ancestral status, population differentiation statistics, and site conservation.

Main Results:

• Creation of PopTargs, a comprehensive, expandable database of microRNA target sites in human populations.
• A functional web tool allowing users to extract multiple datasets and perform joint analyses, including comparative allele frequency spectrum plots.
• Availability of the raw database and code for custom database creation, promoting further research.

Conclusions:

• PopTargs provides a valuable resource for researchers investigating the evolutionary and population-level aspects of microRNA target site variation.
• The integrated approach offered by PopTargs simplifies complex analyses of genetic variation in regulatory elements.
• The open availability of data and code encourages community-driven expansion and application of the resource.