Related Experiment Video
Updated: Aug 17, 2026
Orthotopic Transplantation of Breast Tumors as Preclinical Models for Breast Cancer
Published on: May 18, 2020
Clinically relevant metastatic breast cancer models to study chemosensitivity
1Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, USA.
Abstract:
Metastatic disease, notably to the lungs, liver, bone, and brain, is the most common cause of death from breast cancer, despite advances in surgical and clinical management. Two basic principles govern the process of metastasis: first, that tumors are heterogeneous populations of cells; and second, that the process of metastasis is a sequence of events that depends on tumor cell properties and interactions with the microenvironment at the sites of metastasis. In theory, inhibitors targeted at any of the steps of metastasis have the potential to inhibit metastatic progression. In vitro assays cannot simulate accurately the complex process of metastasis, and the use of appropriate animal models is necessary to model the process, and for testing the impact of targeted inhibitors on the growth and development of breast cancer metastasis. Animal models of the growth and metastasis of rodent and human breast cancer cells have been developed, including models that target the metastatic growth in key organs sites such as the bone and brain.
Insights
Breast cancer metastasis, a leading cause of death, involves complex tumor cell properties and microenvironment interactions. Animal models are crucial for studying metastasis and testing targeted inhibitors to block cancer spread.
Area of Science:
- Oncology
- Cancer Biology
- Translational Research
Background:
- Metastatic breast cancer to organs like the lungs, liver, bone, and brain remains the primary cause of cancer-related mortality.
- Tumor metastasis is governed by tumor cell heterogeneity and a sequential process involving tumor cell-host microenvironment interactions.
Purpose of the Study:
- To highlight the importance of understanding metastasis principles for developing targeted inhibitors.
- To emphasize the necessity of animal models for accurately simulating and studying breast cancer metastasis.
- To discuss the development of animal models for evaluating therapeutic strategies against metastatic breast cancer.
Main Methods:
- Review of fundamental principles governing tumor metastasis.
- Discussion on the limitations of in vitro assays for simulating metastasis.
- Description of the development and application of animal models for studying breast cancer metastasis in key organs.
Main Results:
- Metastasis is a complex, multi-step process dependent on tumor cell characteristics and microenvironmental factors.
- In vitro methods are insufficient for accurately modeling the metastatic cascade.
- Specialized animal models have been developed to study breast cancer metastasis to critical sites like bone and brain.
Conclusions:
- Targeting any step in the metastatic cascade offers theoretical potential for therapeutic intervention.
- Appropriate animal models are essential for validating the efficacy of metastasis inhibitors.
- Developed animal models facilitate the study of targeted inhibitors' impact on breast cancer growth and metastasis.
