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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.

Advanced Materials (Deerfield Beach, Fla.)
|December 16, 2024
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Summary

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.

Keywords:
3D electronicsimplantable optoelectronicsmetronomic photodynamic therapypancreatic cancer treatmentself‐adaptation

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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.