Simple and Rapid Model to Generate Differentiated Endometrial Floating Organoids

Area of Science:

• Biomedical Engineering
• Reproductive Biology
• Stem Cell Biology

Background:

• Three-dimensional (3D) organoids are valuable tools for modeling tissue physiology and pathology.
• Current endometrial organoid models lack stromal cells, limiting the study of essential epithelial-stromal interactions.
• Epithelial-stromal interactions are critical for normal endometrial function and disease pathogenesis.

Purpose of the Study:

• To develop a novel 3D endometrial organoid model that incorporates stromal cells.
• To enable the study of epithelial-stromal interactions in the endometrium in vitro.
• To create a more physiologically relevant model for endometrial research.

Main Methods:

• Endometrial organoids were generated in floating Matrigel droplets using a standard culture medium.
• The model was designed to facilitate the co-culture of epithelial and stromal cells.
• Characterization involved assessing gene expression and structural integrity.

Main Results:

• The novel floating organoids formed gland-like structures with a lumen and apicobasal polarity.
• These organoids retained both epithelial and stromal cell populations in close proximity.
• The model produced differentiated organoids without requiring external hormonal stimulation, mimicking in vivo conditions.

Conclusions:

• A simple and rapid method for generating 3D endometrial organoids with preserved epithelial-stromal interactions was established.
• This model allows for the investigation of reciprocal communication between endometrial epithelial and stromal cells.
• The developed organoids represent a significant advancement for studying endometrial biology and disease.