Generation of Tumor Organoids from Genetically Engineered Mouse Models of Prostate Cancer

Area of Science:

• Genetics and Genomics
• Cancer Biology
• Developmental Biology

Background:

• Homologous recombination methods have advanced gene modification in biological research.
• Genetically engineered mouse models (GEMMs) are crucial for studying mammalian development and disease.
• Prostate cancer (PCa) research has utilized GEMMs with deleted tumor suppressor genes via Cre-loxP recombination.

Purpose of the Study:

• To describe necropsy methods for PCa GEMMs, focusing on prostate tumor dissection.
• To detail a 3D cell culture method for generating tumor organoids from PCa GEMMs.
• To highlight the advantages of GEMMs and 3D organoid cultures over traditional 2D models in pre-clinical cancer research.

Main Methods:

• Development of PCa GEMMs using Cre-loxP system and prostate-specific promoters.
• Necropsy procedures for PCa GEMMs with emphasis on prostate tumor dissection.
• Establishment of 3D tumor organoid cultures from PCa GEMMs.

Main Results:

• Detailed protocols for necropsy and dissection of PCa GEMMs are provided.
• Successful generation of prostate cancer tumor organoids from GEMMs is achieved.
• 3D organoid cultures recapitulate tumor architecture and cell lineage characteristics.

Conclusions:

• GEMMs offer a more physiologically relevant model for tumorigenesis and cancer progression compared to 2D cultures or xenografts.
• 3D tumor organoid cultures provide an in vitro system that mirrors tumor architecture and cell types.
• Combining GEMMs with 3D organoid culture enhances pre-clinical cancer research, improving understanding of cancer biology and enabling better therapeutic development.