1. Academic Validation
  2. Red Phosphorus Decorated TiO2 Nanorod Mediated Photodynamic and Photothermal Therapy for Renal Cell Carcinoma

Red Phosphorus Decorated TiO2 Nanorod Mediated Photodynamic and Photothermal Therapy for Renal Cell Carcinoma

  • Small. 2021 Jul;17(30):e2101837. doi: 10.1002/smll.202101837.
Chengyu Yang 1 Yukun Zhu 2 Daohao Li 2 Yiming Liu 3 Chen Guan 1 Xiaofei Man 1 Shuchao Zhang 4 Lixue Zhang 2 Dongjiang Yang 2 Yan Xu 1
Affiliations

Affiliations

  • 1 Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
  • 2 State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Environmental Science and Engineering & College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China.
  • 3 Shanxi Key Laboratory of Advanced Magnesium-based Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
  • 4 Department of Blood Transfusion, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
Abstract

Clear cell renal cell carcinoma (ccRCC) is a serious and tenacious disease. Photodynamic therapy (PDT) and photothermal therapy (PTT) are effective means of Cancer treatment. However, PDT combined with PTT has been rarely reported in ccRCC treatment. In the present study, by developing the core-shell structured TiO2 @red phosphorus nanorods (TiO2 @RP NRs) as a photosensitizer, the feasibility and effectiveness of synchronous PDT and PTT treatments for ccRCC are demonstrated. The core-shell structured TiO2 @RP NRs are synthesized to drive the PDT and PTT for ccRCC, in which the RP shell is the sensitizer even in the near-infrared (NIR) region. The optimized TiO2 @RP NRs can respond to NIR and produce local heat under irradiation. The NRs are estimated in ccRCC treatments via cell counting kit-8 assay, propidium iodide staining, qRT-PCR, and Reactive Oxygen Species (ROS) probes in vitro, while terminal deoxynucleotidyl transferase dUTP nick-end labeling is conducted in vivo. After NIR irradiation, TiO2 @RP NRs can efficiently kill ccRCC cells by producing local heat and ROS and cause low injury to normal kidney cells. Furthermore, treatment with TiO2 @RP NRs and NIR can kill significant numbers of deep-tissue ccRCC cells in vivo. This work highlights a promising photo-driven therapy for kidney Cancer.

Keywords

photodynamic therapy; photothermal therapy; red phosphorus; renal cell carcinoma; titanium dioxide.

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