Flexocatalysis Enhances Tumor Photodynamic Therapy
Anshuo Li1,2, Liuyang Xu1, Yanmin Jia3
1State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, Applying Chemistry Key Lab of Hebei Province, Heavy Metal Deep-Remediation in Water and Resource Reuse Key Lab of Hebei, Yanshan University, Qinhuangdao, 066004, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 20, 2024
Summary
This study introduces sound-activated flexocatalysis to improve photodynamic therapy (PDT) by reducing tumor pressure and increasing oxygen levels. This novel approach enhances photosensitizer delivery and boosts PDT efficacy against solid tumors.
Area of Science:
- Biomedical Engineering
- Materials Science
- Nanotechnology
Background:
- Photodynamic therapy (PDT) efficacy is limited by high tumor interstitial fluid pressure (TIFP) and hypoxia.
- These factors hinder photosensitizer penetration and reduce treatment effectiveness in solid malignancies.
Purpose of the Study:
- To develop a novel sound-activated flexocatalytic system to overcome PDT limitations.
- To enhance tumor penetration and oxygenation for improved photodynamic therapy outcomes.
Main Methods:
- Constructed a Schottky junction using MoSe2 nanoflowers and Pt.
- Developed a bionic-flexocatalytic nanomedicine (MPI@M) by loading ICG and encapsulating with tumor cytomembrane.
- Utilized acoustic stimulation for flexocatalytic water splitting to reduce TIFP and release oxygen.
Main Results:
- MPI@M successfully reduced TIFP by 30% and relieved tumor hypoxia after 60 minutes.
- Enhanced tumor penetration of indocyanine green (ICG) was observed.
- Significant improvement in PDT therapeutic effects was demonstrated.
Conclusions:
- Sound-activated flexocatalysis effectively addresses TIFP and hypoxia in solid tumors.
- MoSe2/Pt junction nanoflowers show great potential for advanced biocatalytic cancer therapies.
- This approach offers a promising strategy to enhance PDT efficacy.
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