Integrative Map of HIF1A Regulatory Elements and Variations

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• Hypoxia-inducible factors (HIFs) regulate cellular responses to low oxygen and are implicated in diseases like cancer and diabetes.
• A comprehensive map of HIF gene interactions across different omics types is lacking.
• The HIF1A gene is a key regulator in this family.

Purpose of the Study:

• To construct an integrative map of genomic elements associated with the HIF1A gene.
• To identify and prioritize potentially deleterious genetic variants within HIF1A.
• To provide a holistic view of HIF1A's molecular interactions.

Main Methods:

• Utilized genomic databases (Ensembl, MirTarBase) and bioinformatics tools (STRING, Cytoscape, CADD, SIFT, UALCAN).
• Integrated data on transcriptional/post-transcriptional regulators, downstream targets, and genetic variants.
• Visualized the integrative HIF1A gene map.

Main Results:

• Identified one CpG island overlapping the HIF1A transcription start site.
• Prioritized four out of over 450 missense variants with predicted deleterious effects.
• Cataloged 85 targeting miRNAs and diverse downstream targets including lncRNAs and hypoxamiRs.

Conclusions:

• Presents the first integrated map of molecular interactions for the HIF1A gene.
• Enables a holistic understanding of HIF1A's role in cellular processes and disease.
• Provides a foundation for future data integration and research into HIF1A variants.