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Updated: Jun 13, 2025
Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
Published on: December 1, 2016
A Multifunctional Polyester Nanoplatform for the Synergistic Anticancer: Enhanced Photodynamic Therapy and Targeted
Xi Zhang1, De-Zhong Xu1, Wen-Jing Zhao1
1Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, P.R. China.
Abstract:
Gene therapy (GT) and photodynamic therapy (PDT) present promising approaches for cancer treatment. However, GT is frequently impeded by the lysosomal capture of nucleic acids, while PDT is constrained by low oxygen levels in tumors. Herein, we reported the design of a versatile block polyester vector, BFN2, which comprises of a photosensitizer BODIPY (B), an oxygen carrying perfluorinated carbon chain (F) as well as a GSH-responsive, and RNA-condensing [12]aneN3 (N) moiety. In the presence of DOPE (D) and DSPE-PEG-iRGD (R), BFN2 is able to carry oxygen and condense HIF-1α siRNA efficiently and afford hybrid nanoparticles BFN2DR/HIF-1α siRNA@O₂. These combined functionalities work together to reverse tumor hypoxia, remodel the tumor microenvironment, and allow for the efficient lysosomal escape of nucleic acids, thereby significantly boosting the efficacy of PDT and GT in solid tumors. In vitro and in vivo studies demonstrated that the BFN2-DR/HIF-1α siRNA@O₂ nanoplatform significantly exhibited substantial inhibitory effects in 4T1 tumors with TGI up to 87%. This research marks the first-in-class integration of such multimodality therapeutic strategies within a single block polymeric vector, thus offering a novel perspective for developing effective oncological treatment paradigms.
Insights
A novel block polyester vector, BFN2, enhances cancer treatment by combining gene therapy and photodynamic therapy. This nanoplatform delivers oxygen and genetic material, overcoming tumor hypoxia and lysosomal barriers for improved therapeutic outcomes.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Oncology
Background:
- Gene therapy (GT) faces challenges with lysosomal nucleic acid capture.
- Photodynamic therapy (PDT) is limited by tumor hypoxia.
- Developing integrated therapeutic strategies is crucial for effective cancer treatment.
Purpose of the Study:
- To design a versatile block polyester vector (BFN2) for combined gene therapy and photodynamic therapy.
- To address limitations of GT and PDT in solid tumors.
- To create a nanoplatform capable of oxygen delivery and nucleic acid condensation.
Main Methods:
- Synthesis of a block polyester vector (BFN2) incorporating a photosensitizer, oxygen carrier, and RNA-condensing moiety.
- Formation of hybrid nanoparticles (BFN2-DR/HIF-1α siRNA@O₂) with oxygen and siRNA.
- In vitro and in vivo evaluation of the nanoplatform's efficacy in 4T1 tumors.
Main Results:
- The BFN2-based nanoplatform effectively reversed tumor hypoxia and facilitated lysosomal escape of nucleic acids.
- Hybrid nanoparticles demonstrated significant tumor growth inhibition (TGI up to 87%) in 4T1 tumors.
- The integrated approach significantly boosted the combined efficacy of PDT and GT.
Conclusions:
- BFN2 represents a first-in-class block polymeric vector for multi-modality cancer therapy.
- This nanoplatform offers a novel strategy for overcoming therapeutic barriers in solid tumors.
- The developed approach provides a promising perspective for advanced oncological treatment paradigms.
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