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Updated: Mar 19, 2026
Longitudinal Measurement of Extracellular Matrix Rigidity in 3D Tumor Models Using Particle-tracking Microrheology
Published on: June 10, 2014
Biomechanical 3D tumor models on a micro-milled high-throughput force sensor array
Bashar Emon1, Ahmadreza Kashefi1, Md Habibur Rahman1
1Department of Mechanical Science and Engineering, Grainger College of Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States of America.
Abstract:
The tumor microenvironment plays a critical role in drug resistance, with extracellular matrix mechanics, cell-cell crosstalk, and transport barriers contributing to poor therapeutic outcomes. Traditional two-dimensional (2D) cultures fail to capture these features, and drug efficacy in 2D often does not translate to three-dimensional (3D) models orin vivotumors. Here, we present a 3D tumor model integrated with a high-throughput biomechanical sensor array that enables simultaneous measurement of cellular forces and matrix remodeling. The platform, fabricated using a scalable and cost-effective micro-milling approach, supports the parallel generation of multiple tumor constructs within a single dish. To demonstrate feasibility, we formedin vitrotumors using patient-derived pancreatic ductal adenocarcinoma organoids, cancer cells, and stromal fibroblasts. The sensors were then applied to characterize the evolving biophysical properties of these tumors (tissue force and stiffness) and to evaluate responses to chemotherapy drug, Gemcitabine, and the investigational agent, all-trans retinoic acid. Drug responses in 3D tumors were compared with those in 2D cultures. By combining biochemical and biomechanical readouts, this 3D platform provides a more physiologically relevant tumor model and a powerful tool for preclinical drug testing and personalized medicine.
Insights
This study introduces a 3D tumor model with biomechanical sensors to better predict drug response. This advanced model offers a more accurate preclinical testing tool for cancer therapies.
Area of Science:
- Oncology
- Biomedical Engineering
- Biophysics
Background:
- The tumor microenvironment significantly impacts drug resistance and therapeutic outcomes.
- Traditional 2D cell cultures do not accurately represent the complex in vivo tumor environment.
- Key factors like extracellular matrix mechanics and cell communication are crucial but poorly modeled in 2D.
Purpose of the Study:
- To develop and validate a novel 3D tumor model integrated with biomechanical sensors.
- To enable simultaneous measurement of cellular forces and extracellular matrix remodeling in a physiologically relevant context.
- To compare drug responses in the 3D model versus traditional 2D cultures for improved preclinical drug testing.
Main Methods:
- Fabrication of a scalable 3D tumor model using micro-milling techniques.
- Integration of a high-throughput biomechanical sensor array for force and stiffness measurements.
- Culturing of patient-derived pancreatic ductal adenocarcinoma organoids with cancer cells and fibroblasts.
Main Results:
- The 3D model successfully characterized evolving biophysical properties (force, stiffness) of tumor constructs.
- Evaluated responses of 3D tumors to gemcitabine and all-trans retinoic acid (ATRA).
- Demonstrated significant differences in drug response between 3D and 2D culture models.
Conclusions:
- The developed 3D tumor model provides a more physiologically relevant platform for studying drug resistance.
- This biomechanically integrated model enhances preclinical drug testing accuracy.
- The platform holds potential for advancing personalized medicine approaches in cancer treatment.
