Related Experiment Video
Updated: Mar 15, 2026
Production of Humanized Mouse via Thymic Renal Capsule Grafting, CD34+ Cells Injection, and Cytokine Delivery
Published on: September 27, 2021
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.
Abstract:
Cancer research has long been hampered by the limitations of the current model systems. Both cultured cells and mouse xenografts grow in an environment highly dissimilar to that of their originating tumor, frequently resulting in promising treatments that are ultimately clinically ineffective. The development of highly immunodeficient mouse strains into which human immune systems can be engrafted can help bridge this gap. Humanized mice (HM) allow researchers to examine xenograft growth in the context of a human immune system and resultant tumor microenvironment, and recent studies have highlighted the increased similarities in attendant tumor structure, metastasis, and signaling to those features in cancer patients. This setting also facilitates the examination of investigational cancer therapies, including new immunotherapies. This review discusses recent advancements in the generation and application of HM models, their promise in cancer research, and their potential in generating clinically relevant treatments. This review also focuses on current efforts to improve HM models by engineering mouse strains expressing human cytokines or HLA proteins and implanting human bone, liver, and thymus tissue to facilitate immune cell maturation and trafficking. Finally, we discuss how these improvements may help direct future HM model cancer studies. Cancer Res; 76(21); 6153-8. ©2016 AACR.
Insights
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.
