3CDB: a manually curated database of chromosome conformation capture data

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• Chromosome conformation capture (3C) and its variants like Hi-C/ChIA-PET study nuclear organization.
• 3C remains crucial for specific regulatory DNA element interactions (enhancers, promoters) due to Hi-C/ChIA-PET's limitations.
• Existing data on chromatin interactions is fragmented and lacks standardized reliability assessment.

Purpose of the Study:

• To develop a comprehensive database (3CDB) of functional chromatin interactions.
• To establish a systematic evaluation scheme for assessing the reliability of 3C-derived interaction data.
• To provide a user-friendly platform for accessing and analyzing chromatin interaction information.

Main Methods:

• Systematic literature search of PubMed and Google Scholar using targeted keywords.
• Manual extraction and curation of 3319 chromatin interactions from over 5000 retrieved articles across 17 species.
• Development of a novel evaluation scheme to classify interaction data reliability into four categories.

Main Results:

• The creation of 3CDB, a curated database of 3C-determined functional chromatin interactions.
• Implementation of a reliability scoring system to address inconsistencies in 3C protocol variations.
• A user-friendly web interface for efficient searching and retrieval of interaction data.

Conclusions:

• 3CDB offers a valuable resource for researchers studying genome organization and function.
• The proposed evaluation scheme provides a standardized method for assessing data quality in chromatin interaction studies.
• 3CDB will facilitate experimental design, phylogenetic analysis, and interdisciplinary research bridging molecular and systems biology.