FGF-9 accelerates epithelial invagination for ectodermal organogenesis in real time bioengineered organ manipulation

Area of Science:

• Developmental Biology
• Regenerative Medicine
• Bioengineering

Background:

• Epithelial invagination is crucial for ectodermal organogenesis.
• Real-time studies on factors influencing ectodermal organogenesis are limited.
• Electric cell-substrate impedance sensing (ECIS) offers real-time monitoring of cell layer changes.

Purpose of the Study:

• To establish a bioengineered organ-ECIS model for real-time analysis.
• To investigate the effects of fibroblast growth factor-9 (FGF-9) on epithelial invagination.
• To explore FGF-9's role in epithelial-mesenchymal interactions during ectodermal organ development.

Main Methods:

• Dissection of epithelial and mesenchymal cells from murine molar tooth germs (E14.5).
• Establishment of a combined bioengineered organ-Electric cell-substrate impedance sensing (ECIS) model.
• Real-time monitoring of bioengineered ectodermal organ thickness and gene expression.

Main Results:

• Fibroblast growth factor-9 (FGF-9) was shown to accelerate epithelial invagination within 3 days.
• FGF-9 stimulates and sustains the expression of Ameloblastin and Amelogenin during odontogenesis.
• The study provides the first real-time data on FGF-9's role in epithelial invagination.

Conclusions:

• FGF-9 plays a significant role in initiating epithelial invagination and ectodermal organogenesis.
• FGF-9 holds potential for ectodermal organ regeneration research.
• The bioengineered organ-ECIS model is a promising tool for ectodermal organ engineering.