A Synthetic Hydrogel with Tunable Stiffness for Engineering Pancreatic Cancer Organoids and Drug Testing

Area of Science:

• Biomedical Engineering
• Cancer Research
• Materials Science

Background:

• Pancreatic cancer organoids (PCOs) are valuable in vitro models.
• Current PCO culture relies on animal-derived matrices with limitations like batch variability and poor tumor mimicry.

Purpose of the Study:

• To develop a controllable hydrogel matrix that mimics native tumor mechanical properties for PCO culture.
• To evaluate the impact of this biomimetic hydrogel on PCO behavior and drug response.

Main Methods:

• Fabrication of a sodium alginate (NaA) and hyaluronic acid (HA) hydrogel matrix.
• Culture of PCOs within the NaA-HA hydrogel and comparison with Matrigel.
• Assessment of PCO viability, growth, tumor-specific features, and gene expression.
• Evaluation of PCO drug response to conventional and targeted therapies.

Main Results:

• PCOs in the NaA-HA hydrogel showed comparable viability and growth to Matrigel.
• Hydrogel culture improved tumor-specific features and activated ECM-related signaling pathways.
• Biomimetic hydrogel stiffness modulated PCO drug resistance and sensitivity, enhancing response to targeted therapy in EGFR-mutated PCOs.

Conclusions:

• The NaA-HA hydrogel provides a controllable and biomimetic matrix for PCO culture.
• This platform supports advanced pancreatic cancer research and drug screening.
• Customizable hydrogel stiffness can be leveraged to optimize PCO models for specific research applications.