Prdm6 controls heart development by regulating neural crest cell differentiation and migration

Area of Science:

• Developmental biology
• Epigenetics
• Cardiovascular research

Background:

• The molecular basis for neural crest cell (NCC) fate determination remains incompletely understood.
• Cardiac NCCs (CNCCs) are vital for heart development, and their proper differentiation, delamination, and migration are essential for preventing congenital heart disease.

Purpose of the Study:

• To identify key regulators of CNCC fate and migration.
• To elucidate the role of the epigenetic modifier Prdm6 in CNCC development.
• To explore Prdm6 as a potential therapeutic target for congenital heart diseases.

Main Methods:

• Transcriptomic analysis (bulk and single-cell RNA-Seq) in transgenic mice.
• Genetic manipulation and fate mapping of CNCCs.
• Analysis of epigenetic modifications (H4K20 monomethylation) and cell cycle progression.

Main Results:

• Prdm6 regulates the expression of critical CNCC specifier genes, including Wnt1, Tfap2b, and Sox9.
• Loss of Prdm6 disrupts CNCC differentiation, delamination, and migration, leading to patent ductus arteriosus and ventricular noncompaction.
• Prdm6 deficiency causes retention of NCCs in the dorsal neural tube due to impaired epithelial-mesenchymal transition, linked to altered H4K20 monomethylation and Wnt1 expression.

Conclusions:

• Prdm6 is a critical epigenetic regulator of CNCC differentiation and migration.
• Prdm6 and its downstream gene network represent promising targets for treating congenital heart diseases.