Using 3-Dimensional Cultures to Propagate Genetically Modified Lung Organoids.

Area of Science:

• Biotechnology
• Cancer Research
• Organoid Technology

Background:

• Traditional 2D cell cultures are insufficient for modeling murine primary lung tumors.
• Three-dimensional (3D) air-liquid interface (ALI) cultures are effective for normal lung organoids and can be adapted for cancerous cells.

Purpose of the Study:

• To detail a protocol for cultivating genetically modified lung organoids in 3D-ALI cultures.
• To establish a platform for lung cancer modeling, drug screening, and studying cancer progression.

Main Methods:

• Part 1: Transduction of lung epithelial cells (primary or from existing organoids) with virus for gene modification, followed by co-culture with stromal cells in Matrigel.
• Part 2: Isolation and culture of orthotopic tumor cells from genetically engineered mouse models using 3D-ALI culture with Matrigel, followed by passaging to establish organoid lines.

Main Results:

• Successfully established a protocol for genetically modified lung organoids using 3D-ALI culture.
• Developed methods for creating organoid cell lines from murine lung tumors for drug discovery.

Conclusions:

• The described protocols offer a robust platform for studying lung cancer genesis, progression, and treatment.
• 3D-ALI organoid cultures provide a superior model for lung cancer research compared to 2D methods.