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Qianyu Zhang, Cuixia Bao, Xiaojun Cai, Longwei Jin, Lingling Sun, Yuehong Lang, Libo Li
Sonodynamic therapy (SDT), which is based on photodynamic therapy (PDT), is a new cancer treatment modality. Unlike PDT, which has poor tissue penetration, ultrasound can penetrate deeply into tissues and largely target tumor tissue to mediate the cytotoxicity of sonosensitizers. We hypothesize that, similar to PDT, SDT may perform effectively as a cancer vaccines. Thus, we developed a therapeutic strategy to explore whether SDT can eliminate primary tumors, inhibit metastases, and prevent tumor relapse. In this study, we found that HiPorfin (HPD)-induced SDT killed tumor cells, promoted calreticulin expression on the cell surface and elicited immune responses...
March 25, 2018: Cancer Science
Mengxiong Sun, Chenghao Zhou, Hui Zeng, Nahum Puebla-Osorio, Elisabetta Damiani, Jian Chen, Hongsheng Wang, Guodong Li, Fei Yin, Liancheng Shan, Dongqing Zuo, Yuxin Liao, Zhuoying Wang, Longpo Zheng, Yingqi Hua, Zhengdong Cai
This study was carried out to investigate the anti-tumor effect and mechanism of hiporfin-mediated photodynamic therapy (hiporfin-PDT) in osteosarcoma. We found that hiporfin accumulated mainly in the cytoplasm of osteosarcoma cells in a time and concentration-dependent manner. Hiporfin-PDT inhibited the proliferation, induced apoptosis and produced cell cycle arrest at G2M in osteosarcoma cell lines. Hiporfin-PDT increased the expression of cleaved-caspase-3, cleaved PARP-1, Bax and RIP1 while it decreased the expression of Bcl-2; in addition, low concentration of hiporfin increased LC3 conversion...
May 2015: Photochemistry and Photobiology
Xiaona Zhang, Jinzhang Chen, Yuling Luo, Lanying Zhang, Rongcheng Luo, Libo Li
BACKGROUND AND OBJECTIVE: To evaluate the usefulness and feasibility of fluorescence examination and photodynamic therapy (PDT) for facial squamous cell carcinoma. METHODS: A 68-year-old male patient underwent 3 courses of PDT. The first treatment was carried out using topically applied 5-aminolevulinic acid (ALA) to the affected area (5.0 cm × 2.5 cm) 3h before light irradiation. ALA/PpIX-mediated fluorescence was used to visualize the lesion and its margin. The lesion was illuminated with a 630 nm laser at 120 J/cm²...
March 2012: Photodiagnosis and Photodynamic Therapy
Zheng Huang
Numerous photosensitizers have been developed and evaluated in China. HiPorfin, a hematoporphyrin derivative (HpD) received the first regulatory approval in the early 2000s. Aila, a topical formulation containing predrug 5-aminolevulinic acid, received the regulatory approval in 2007. Recently, new drug applications have been filed for several hematoporphyrin derivatives and a zinc phthalocyanine (ZnPc) derivative. This short report will summarize the current regulatory status of Chinese photosensitizers developed for photodynamic therapy (PDT)...
December 2008: Photodiagnosis and Photodynamic Therapy
Libo Li, Yongjian Deng, Lanying Zhang, Wangjun Liao, Rongcheng Luo, Zheng Huang
Our aim was to determine the usefulness of fluorescence examination and photodynamic therapy (PDT) for the management of perianal extramammary Paget's disease. A 75-year-old woman underwent two courses of PDT. The first treatment was carried out with topically applied 5-aminolevulinic acid (ALA) to the affected area (2.5 x 2.5 cm(2)) 3 h before light treatment. We used ALA/protoporphyrin IX (PpIX)-mediated fluorescence to visualize the lesion and its margins. The lesion was treated with a 630 nm laser at 120 J/cm(2)...
November 2009: Lasers in Medical Science
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