Related Experiment Video
Updated: Jun 5, 2025
Bioluminescent Orthotopic Model of Pancreatic Cancer Progression
Published on: June 28, 2013
Deeply Implantable, Shape-Morphing, 3D MicroLEDs for Pancreatic Cancer Therapy
Jae Hee Lee1,2, Chae Gyu Lee3,4, Min Seo Kim1
1Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
Abstract:
Controlled photooxidation-mediated disruption of collagens in the tumor microenvironment can reduce desmoplasia and enhance immune responsiveness. However, achieving effective light delivery to solid tumors, particularly those with dynamic volumetric changes like pancreatic ductal adenocarcinoma (PDAC), remains challenging and limits the repeated and sustained photoactivation of drugs. Here, 3D, shape-morphing, implantable photonic devices (IPDs) are introduced that enable tumor-specific and continuous light irradiation for effective metronomic photodynamic therapy (mPDT). This IPD adheres seamlessly to the surface of orthotopic PDAC tumors, mitigating issues related to mechanical mismatch, delamination, and internal lesions. In freely moving mouse models, mPDT using the IPD with close adhesion significantly reduces desmoplastic tumor volume without causing cytotoxic effects in healthy tissues. These promising in vivo results underscore the potential of an adaptable and unidirectional IPD design in precisely targeting cancerous organs, suggesting a meaningful advance in light-based therapeutic technologies.
Insights
Researchers developed 3D, shape-morphing implantable photonic devices (IPDs) for metronomic photodynamic therapy (mPDT). These devices enable continuous light delivery to pancreatic ductal adenocarcinoma (PDAC) tumors, reducing desmoplasia and enhancing immune response in mouse models.
Area of Science:
- Biomedical Engineering
- Oncology
- Photomedicine
Background:
- Collagens in the tumor microenvironment contribute to desmoplasia and immune suppression.
- Effective light delivery to solid tumors, especially dynamic ones like pancreatic ductal adenocarcinoma (PDAC), is crucial for photodynamic therapy but remains a challenge.
- Current methods struggle with sustained light activation due to tumor movement and volumetric changes.
Purpose of the Study:
- To introduce 3D, shape-morphing implantable photonic devices (IPDs) for tumor-specific and continuous light irradiation.
- To evaluate the efficacy of metronomic photodynamic therapy (mPDT) using IPDs in PDAC models.
- To address challenges in light delivery for sustained phototherapy in dynamic tumors.
Main Methods:
- Development of 3D, shape-morphing implantable photonic devices (IPDs) designed for seamless adhesion to tumor surfaces.
- Application of mPDT using IPDs in orthotopic PDAC mouse models.
- Assessment of tumor volume reduction, desmoplasia, and immune responsiveness post-treatment.
Main Results:
- The IPDs adhered effectively to orthotopic PDAC tumors, overcoming issues of mechanical mismatch and delamination.
- mPDT with IPDs significantly reduced desmoplastic tumor volume in freely moving mouse models.
- The treatment demonstrated efficacy without causing cytotoxic effects in surrounding healthy tissues.
Conclusions:
- Adaptable and unidirectional IPDs offer a promising approach for precise light delivery in cancer therapy.
- This technology facilitates effective metronomic photodynamic therapy for challenging tumors like PDAC.
- The findings represent a significant advancement in light-based therapeutic technologies for targeted cancer treatment.
