In Ovo CAM-Based Xenograft Model for Investigating Tumor Developmental Biology in Breast Cancer

Area of Science:

• Oncology
• Developmental Biology
• Translational Research

Background:

• Breast cancer is a leading cause of death in women globally.
• Understanding tumor growth, angiogenesis, and microenvironment is key for effective therapies.
• Traditional murine xenografts are time-consuming, costly, and ethically challenging.

Purpose of the Study:

• To present a novel in ovo chick embryo chorioallantoic membrane (CAM) xenograft model for breast cancer research.
• To offer a rapid, cost-effective, and ethically flexible alternative to traditional in vivo models.
• To facilitate the study of tumor development, angiogenesis, and therapeutic interventions.

Main Methods:

• Human breast cancer cells are implanted onto the vascularized CAM of chick embryos.
• The in ovo model allows for real-time evaluation of tumor growth and angiogenesis.
• Experimental conditions can be manipulated for pharmacological or genetic studies.

Main Results:

• Rapid tumor formation occurs within 3-4 days post-implantation.
• The CAM assay provides a valuable platform for studying tumor development and angiogenesis.
• The model is suitable for high-throughput screening and short-term studies.

Conclusions:

• The chick embryo CAM assay is a simple, low-cost, and ethical model for breast cancer research.
• This method supports translational research by enabling efficient pharmacological testing and microenvironment manipulation.
• It serves as a valuable alternative to rodent models, aligning with the 3Rs principles.