Related Experiment Video
Updated: Mar 27, 2026
Advanced Animal Model of Colorectal Metastasis in Liver: Imaging Techniques and Properties of Metastatic Clones
Published on: November 30, 2016
Biology and preclinical models of colorectal cancer metastasis
Yoojeong Seo1, Jinho Jang1, Jae-Il Park1,2,3
1Division of Radiation Oncology, Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Abstract:
Metastatic colorectal cancer (mCRC) is the principal cause of CRC-related mortality, yet the biology of mCRC remains only partly understood and challenging to interrogate experimentally. Despite recent progress in mapping recurrent genetic and epigenetic alterations and treatment responses of mCRC, these efforts provide limited insight into how heterogeneous primary tumors breach tissue barriers, survive in circulation, and colonize distant organs. In this review, we summarize current experimental systems for studying mCRC, including genetically engineered mouse models, carcinogen-induced and transplant models, and patient-derived organoid and xenograft platforms, and discuss how each captures or fails to capture key steps of the metastatic cascade and organ-specific microenvironments. We highlight practical obstacles to longitudinal sampling and quantitative readouts of metastatic burden, as well as conceptual gaps in modeling immune and stromal influences. Finally, we outline how emerging approaches, including single-cell and spatial transcriptomics, and advances in longitudinal tracking of metastatic burden could be combined into an integrated framework that more faithfully links mechanistic insight to clinical behavior and ultimately to metastasis-specific therapies.
Insights
Investigating metastatic colorectal cancer (mCRC) requires better experimental models. Current systems have limitations in capturing the full metastatic cascade and tumor microenvironment for developing effective therapies.
Area of Science:
- Oncology
- Cancer Metastasis Research
Background:
- Metastatic colorectal cancer (mCRC) is a leading cause of cancer mortality.
- The complex biology of mCRC, including metastasis, remains poorly understood.
- Existing research provides limited insight into how primary tumors metastasize.
Purpose of the Study:
- To review current experimental systems for studying mCRC.
- To discuss the strengths and limitations of various models in capturing metastatic processes.
- To identify gaps in modeling and propose integrated approaches for future research.
Main Methods:
- Review of existing literature on experimental models for mCRC.
- Analysis of genetically engineered mouse models, carcinogen-induced models, transplant models, patient-derived organoids, and xenografts.
- Discussion of challenges in longitudinal sampling and modeling of tumor microenvironment.
Main Results:
- Current experimental systems partially capture key steps of the metastatic cascade.
- Significant limitations exist in modeling immune and stromal influences.
- Obstacles hinder longitudinal sampling and quantitative assessment of metastatic burden.
Conclusions:
- Improved experimental systems are crucial for understanding mCRC metastasis.
- Integrating emerging approaches like single-cell transcriptomics and advanced tracking methods is needed.
- A comprehensive framework is required to link mechanistic insights to clinical behavior and develop metastasis-specific therapies.
