Epigenetic regulation and transcriptional memory in development; selection facilitating prudence

Area of Science:

• Developmental biology
• Epigenetics
• Genomics

Background:

• Epigenetic mechanisms regulate gene expression for developmental processes.
• Global regulators control gene expression profiles using a conserved set of tools.
• Epigenetic regulation involves DNA modification and histone post-translational modification.

Purpose of the Study:

• To review the epigenetic mechanisms controlling developmental gene expression.
• To illustrate the functional diversity of epigenetic regulation.
• To discuss the utilization of genome data for identifying new epigenetic players.

Main Methods:

• Review of existing literature on epigenetic mechanisms.
• Analysis of genome sequence data for de novo identification of new players.
• Functional validation of identified epigenetic players.

Main Results:

• Epigenetic mechanisms involve DNA motif recognizing proteins, actin-related proteins, histone modifiers (writers, readers, erasers), and chromatin remodelers.
• These complexes regulate transcription and maintain transcriptional memory through mitosis.
• Genome data analysis facilitates the identification of novel epigenetic regulators.

Conclusions:

• Epigenetic regulation is crucial for developmental gene expression and cellular memory.
• A diverse toolkit of proteins participates in epigenetic regulation.
• Genome-based approaches are effective for discovering new epigenetic players and understanding their functions.