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Isolation and Time-Lapse Imaging of Primary Mouse Embryonic Palatal Mesenchyme Cells to Analyze Collective Movement Attributes
Published on: February 13, 2021
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Depolarization induces calcium-dependent BMP4 release from mouse embryonic palate mesenchyme
Biorxiv : the Preprint Server for Biology
|June 25, 2024
Summary
Ion channels regulate craniofacial development by controlling bone morphogenetic protein (BMP) release. Depolarization and calcium signaling in embryonic cells coordinate BMP secretion, essential for skeletal formation.
Area of Science:
- Developmental Biology
- Cellular Electrophysiology
Background:
- Ion channels are crucial for craniofacial skeleton development.
- Molecular mechanisms of bone morphogenetic protein (BMP) signaling in craniofacial morphogenesis are not fully understood.
- The Kcnj2 potassium channel's role in BMP signaling during palate development is known, but BMP secretion mechanisms remain unclear.
Purpose of the Study:
- To investigate the role of ion channels and intracellular calcium in regulating BMP secretion during craniofacial development.
- To elucidate the molecular mechanisms governing bone morphogenetic protein 4 (BMP4) release from mammalian cells.
Main Methods:
- Development of a novel tool to visualize BMP4 release from mammalian cells.
- Utilizing this tool to study BMP4 release in mouse embryonic palate mesenchyme cells.
- Measuring intracellular calcium transients in cranial neural crest and palate mesenchyme cells.
Main Results:
- Depolarization triggers calcium-dependent BMP4 release from embryonic palate mesenchyme cells.
- Cranial neural crest cells exhibit transient intracellular calcium changes, suggesting electrical coupling and coordinated BMP release.
- Disruption of Kcnj2 impairs calcium transient amplitude and BMP secretion.
Conclusions:
- Embryonic palate mesenchyme cells exhibit transient intracellular calcium dynamics.
- Cellular depolarization induces BMP4 release, positioning ion channels as key regulators in BMP4 signaling pathways.
- Ion channels, depolarization, and intracellular calcium changes temporally control developmental cues for craniofacial morphogenesis.
