Engineering three-dimensional genome folding.

Area of Science:

• Genomics
• Molecular Biology
• Evolutionary Biology

Background:

• Animal genomes exhibit complex folding at multiple scales, influencing nuclear functions.
• Previous studies primarily used loss-of-function approaches to understand genome architecture.
• Gain-of-function studies investigating genome architecture have been less explored.

Purpose of the Study:

• To review recent advances in experimentally creating genome structures like chromatin loops and contact domains.
• To explore the evolutionary trajectory of mammalian genome architecture.
• To provide insights for future three-dimensional genome engineering.

Main Methods:

• Review of experimental techniques for creating chromatin loops, contact domains, boundaries, and compartments.
• Comparative analysis of experimental findings with natural genome evolution.
• Exploration of gain-of-function study implications.

Main Results:

• Recent advances enable experimental creation of specific genome architectural features.
• Parallels exist between engineered and naturally evolved mammalian genome complexity.
• Gain-of-function studies offer new perspectives on genome architecture.

Conclusions:

• Experimental manipulation of genome architecture is advancing.
• Understanding genome folding through gain-of-function studies is crucial for future engineering.
• Evolutionary insights complement experimental approaches to genome architecture.