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Updated: Mar 13, 2026
Tissue Engineering of a Human 3D in vitro Tumor Test System
Published on: August 6, 2013
Self-assembly of vascularized tissue to support tumor explants in vitro
Despina Bazou1, Nir Maimon1, Gabriel Gruionu2
1Edwin L. Steele Laboratory, Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, 100 Blossom Street, Boston, Massachusetts 02114, USA. munn@steele.mgh.harvard.edu.
Abstract:
Testing the efficacy of cancer drugs requires functional assays that recapitulate the cell populations, anatomy and biological responses of human tumors. Although current animal models and in vitro cell culture platforms are informative, they have significant shortcomings. Mouse models can reproduce tissue-level and systemic responses to tumor growth and treatments observed in humans, but xenografts from patients often do not grow, or require months to develop. On the other hand, current in vitro assays are useful for studying the molecular bases of tumorigenesis or drug activity, but often lack the appropriate in vivo cell heterogeneity and natural microenvironment. Therefore, there is a need for novel tools that allow rapid analysis of patient-derived tumors in a robust and representative microenvironment. We have developed methodology for maintaining harvested tumor tissue in vitro by placing them in a support bed with self-assembled stroma and vasculature. The harvested biopsy or tumor explant integrates with the stromal bed and vasculature, providing the correct extracellular matrix (collagen I, IV, fibronectin), associated stromal cells, and a lumenized vessel network. Our system provides a new tool that will allow ex vivo drug-screening and can be adapted for the guidance of patient-specific therapeutic strategies.
Insights
This study introduces a novel method for testing cancer drugs using patient tumors maintained ex vivo. This new approach enables rapid drug screening and personalized cancer treatment strategies.
Area of Science:
- Oncology
- Biotechnology
- Drug Discovery
Background:
- Current cancer drug testing methods, including animal models and in vitro assays, have limitations in fully recapitulating human tumor complexity and microenvironments.
- Animal models face challenges with xenograft growth and development time, while in vitro assays lack in vivo cell heterogeneity and natural tumor microenvironments.
- A need exists for advanced tools that facilitate rapid analysis of patient-derived tumors within a representative and robust microenvironment.
Purpose of the Study:
- To develop a novel methodology for maintaining harvested human tumor tissue ex vivo.
- To create a system that supports rapid analysis and drug screening of patient-derived tumors.
- To provide a platform adaptable for guiding patient-specific therapeutic strategies.
Main Methods:
- Developed a method for preserving harvested tumor tissue in vitro using a support bed with self-assembled stroma and vasculature.
- Harvested biopsy or tumor explants were integrated with the stromal bed and vasculature.
- Ensured the provision of appropriate extracellular matrix components (collagen I, IV, fibronectin), associated stromal cells, and a lumenized vessel network.
Main Results:
- The developed system successfully integrates harvested tumor tissue with a supportive stromal and vascular bed.
- The system maintains key components of the tumor microenvironment, including extracellular matrix and stromal cells.
- A lumenized vessel network was established within the ex vivo tumor explants.
Conclusions:
- The novel methodology enables the maintenance of patient-derived tumors ex vivo in a representative microenvironment.
- This system serves as a new tool for ex vivo drug screening.
- The platform can be adapted to guide patient-specific therapeutic strategies in cancer treatment.
