Three-dimensional genome organization in epigenetic regulations: cause or consequence?

Area of Science:

• Evolutionary biology
• Genomics
• Cell biology

Background:

• The eukaryotic nucleus compartmentalizes the genome, enabling fine-tuned gene regulation.
• Genome organization involves spatial positioning and topological folding across multiple scales.
• 3D Genomics integrates experimental, theoretical, and modeling approaches to study genome architecture.

Purpose of the Study:

• To explore the causal relationship between genome organization (positioning and folding) and functional states.
• To present emerging answers regarding whether 3D genome structure causes or results from cellular functions.
• To review recent findings in plant and animal models.

Main Methods:

• Review of experimental, theoretical, and modeling approaches in 3D Genomics.
• Analysis of studies investigating genome spatial positioning and topological folding.
• Comparative analysis of findings across plant and animal systems.

Main Results:

• Emerging evidence suggests a complex interplay between genome structure and function.
• Studies highlight how specific 3D genome conformations are linked to distinct functional states.
• Causality is being elucidated through integrated multi-omics and imaging techniques.

Conclusions:

• The multiscale model of the eukaryotic genome is refined by understanding the causality of 3D genome organization.
• Resolving whether structure dictates function or vice versa is crucial for understanding genome regulation.
• Future research in 3D Genomics will continue to unravel the intricate links between genome architecture and biological outcomes.