Endoluminal photodynamic therapy with a photoreactive stent-based catheter system to treat malignant colorectal obstruction.

ABSTRACT: Photodynamic therapy (PDT) using photosensitizer (PS)-embedded silicone membrane-covered self-expandable metallic stents (SEMSs) can function in palliative therapeutic option for malignant gastrointestinal tract obstruction. However, stent-related complications should be considered, and accurate delivery of light sources is technically difficult. Here, a Chlorin e6 (Ce6)-an embedded stent-based catheter is developed to improve its therapeutic efficacy and safety. PDT using Ce6-embedded stent successfully induced cell death of colorectal cancer cell line. PDT-treated liver tissues showed an increase in ablation depth in proportion to irradiation energy, and 600 J/cm² demonstrates an even and sufficient ablation depth. Endoluminal PDT using the Ce6-embedded stent-based catheter wa

SUBMITTER: Eo SJ 

PROVIDER: S-EPMC11883124 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature