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Humanized Mouse Xenograft Models: Narrowing the Tumor-Microenvironment Gap
J Jason Morton1, Gregory Bird2, Yosef Refaeli2,3
1Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado.
Cancer Research
|September 3, 2016
Summary
Humanized mice (HM) provide a more accurate cancer research model by incorporating a human immune system. These advanced models improve the study of tumor microenvironments and the development of effective cancer therapies.
Area of Science:
- Oncology
- Immunology
- Translational Research
Background:
- Current cancer model systems (cell cultures, mouse xenografts) lack physiological relevance, leading to ineffective clinical treatments.
- Humanized mice (HM) engrafted with human immune systems offer a more accurate preclinical environment.
- Recent studies show HM models better mimic human tumor structure, metastasis, and signaling.
Purpose of the Study:
- To review advancements in humanized mouse model generation and application in cancer research.
- To highlight the potential of HM in developing clinically relevant cancer treatments.
- To discuss improvements in HM models for enhanced immune cell function and future cancer studies.
Main Methods:
- Engrafting human immune systems into immunodeficient mouse strains.
- Engineering mouse strains with human cytokines or HLA proteins.
- Implanting human tissues (bone, liver, thymus) to support immune cell maturation.
Main Results:
- Humanized mice exhibit increased similarities to human tumors in structure, metastasis, and signaling.
- HM models facilitate the study of investigational cancer therapies, including immunotherapies.
- Ongoing improvements enhance immune cell maturation and trafficking within HM models.
Conclusions:
- Humanized mice represent a significant advancement in cancer research models.
- Improved HM models hold promise for generating more effective and clinically relevant cancer therapies.
- Future research directions are informed by enhancements in HM model capabilities.
