Related Experiment Video
Updated: Jun 8, 2025
Generation of Heterogeneous Drug Gradients Across Cancer Populations on a Microfluidic Evolution Accelerator for Real-Time Observation
Published on: September 19, 2019
A heterotypic tumor-on-a-chip platform for user-friendly combinatorial chemotherapeutic testing
Xufang Liu1, Meilin Sun1, Fen Zhang2
1Departments of Biomedical Engineering and Pathology, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China.
Background:
Three-dimensional (3D) tumor microdevices are promising platform for biomimetic antitumor prediction and high-throughput chemotherapeutic screening and play crucial roles in the exploration of cancer-associated pharmaceutics and therapeutics. Traditional cell manipulation tools (e.g., non-adhesive surfaces and hanging drops) and recent microengineered systems (e.g., microfluidic chips and micropatterned array chips) have progressed in terms of microscale control, substantial tumor production, programmable drug combinations, and throughput analysis. However, establishing a facile 3D tumor microdevice to construct heterotypic tumor-microenvironmental profiles and for throughput, implementable, multi-instrument-compatible analysis of chemotherapies to advance consumer-grade tumor modelling tools is still being explored.
Results:
In this study, we present a facilely operated tumor-on-a-chip platform for massive production of heterotypic 3D tumors and diverse investigations of combinatorial chemotherapy screening. Large quantity of heterotypic tumor generation with high geometric controllability (size difference: 19.6 μm) and operational repeatability (n = 10) was achieved using simple-to-fabricate micropatterned chips. Multiple characteristics of solid tumors, including phenotypic gradients (viability and proliferation) and heterogeneous cellular compositions (multi-cell participation and stroma composition), were reproduced in heterotypic tumors, being more biomimetic than homotypic tumors. We completed the user-friendly analytical evaluation of individual and combinatorial drug therapies, and demonstrated the high applicability of the platform in biomimetic tumor-related large-scale manipulation and on-chip analysis, as well as its high compatibility for off-chip detection. The entire operative process during tumor production and chemotherapy only requires the routine and easy-to-master pipetting manipulation.
Significance:
The establishment of a biomimetic and easy-to-use 3D tumor platform and the large-scale screening-like evaluation of combinatorial chemotherapies based on the usage of the micropatterned chip was achieved in a user-friendly manner. This advancement has significant application potential in the fields of oncology, drug discovery, and tissue engineering, and is expected to be valuable for developing accessible and generalizable tumor-on-a-chip microsystems for exploring cancer therapies.
Insights
A new, easy-to-use 3D tumor-on-a-chip platform enables mass production of heterotypic tumors for biomimetic drug screening. This system simplifies combinatorial chemotherapy analysis, advancing cancer research and drug discovery.
Area of Science:
- Biomedical Engineering
- Oncology
- Drug Discovery
Background:
- Three-dimensional (3D) tumor microdevices are crucial for predicting antitumor responses and high-throughput drug screening.
- Existing methods for 3D tumor model creation and analysis have limitations in ease of use, throughput, and biomimicry.
- Developing accessible 3D tumor models for consumer-grade applications remains an active area of research.
Purpose of the Study:
- To develop a facilely operated tumor-on-a-chip platform for mass production of heterotypic 3D tumors.
- To enable diverse investigations of combinatorial chemotherapy screening using these 3D tumor models.
- To demonstrate the platform's applicability for user-friendly, large-scale analysis of cancer therapies.
Main Methods:
- Utilized simple-to-fabricate micropatterned chips for high geometric controllability and repeatability in heterotypic tumor generation.
- Reproduced key solid tumor characteristics, including phenotypic gradients and heterogeneous cellular compositions.
- Employed user-friendly pipetting manipulation for tumor production and chemotherapy analysis, ensuring ease of operation.
Main Results:
- Achieved massive production of heterotypic 3D tumors with high geometric controllability (19.6 μm size difference) and operational repeatability (n=10).
- Successfully reproduced complex tumor characteristics like phenotypic gradients and multi-cell compositions, enhancing biomimicry compared to homotypic tumors.
- Demonstrated user-friendly analytical evaluation of individual and combinatorial drug therapies with high applicability for on-chip and off-chip analysis.
Conclusions:
- Established a biomimetic and user-friendly 3D tumor platform for large-scale combinatorial chemotherapy screening.
- The platform offers significant potential for oncology, drug discovery, and tissue engineering applications.
- This advancement is expected to contribute to the development of accessible and generalizable tumor-on-a-chip systems for cancer therapy exploration.
