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Related Experiment Video

Updated: Jun 27, 2026

Separation of Mouse Embryonic Facial Ectoderm and Mesenchyme

Separation of Mouse Embryonic Facial Ectoderm and Mesenchyme

Published on: April 12, 2013

PRMT1-methylated MSX1 phase separates to control palate development.

Li Meng^1,2, Yucheng Jiang¹, Jiawen You^1,3

¹State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Nanjing, China.

Nature Communications

|January 22, 2025

Summary

This summary is machine-generated.

MSX1 protein phase separation is vital for embryonic palate fusion. Aberrant separation due to mutations or low methylation causes cell defects and cleft palate, a common birth defect.

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Isolation and Time-Lapse Imaging of Primary Mouse Embryonic Palatal Mesenchyme Cells to Analyze Collective Movement Attributes

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Published on: February 13, 2021

Area of Science:

Developmental Biology
Molecular Biology
Genetics

Background:

Cleft palate is the most common craniofacial birth defect, but its molecular regulation is not fully understood.
MSX1 mutations are linked to human cleft palate, yet the underlying mechanisms remain unclear.

Purpose of the Study:

To investigate the role and regulation of MSX1 protein phase separation in craniofacial development, specifically embryonic palatal fusion.
To elucidate how MSX1 phase separation is controlled and how its dysregulation leads to cleft palate.

Main Methods:

Analysis of MSX1 protein phase separation in vertebrate models.
Investigating the role of the intrinsically disordered protein region (IDR) and PRMT1-catalyzed methylation in regulating MSX1 phase separation.
Studying the impact of methylation site mutations and PRMT1 deficiency on MSX1 condensate dynamics and cell proliferation.

Main Results:

MSX1 phase separation is a conserved mechanism essential for embryonic palatal fusion.
MSX1 phase separation is triggered by its IDR and regulated by PRMT1-mediated methylation.
Hypomethylation or mutations (e.g., R157S) disrupt MSX1 phase separation, leading to gel-like condensates, impaired cell proliferation, and cleft palate.

Conclusions:

MSX1 phase separation is a critical regulatory mechanism in craniofacial development.
PRMT1-catalyzed methylation is a key regulator of MSX1 phase separation and function.
Dysregulated MSX1 phase separation provides a mechanistic link between MSX1 mutations and cleft palate, offering insights into craniofacial developmental disorders.