期刊
MOLECULAR PHARMACEUTICS
卷 17, 期 7, 页码 2648-2659出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.molpharmaceut.0c00331
关键词
Zn(II) phthalocyanine; mesoporous silica nanoparticles; cetuximab; singlet oxygen; photodynamic therapy
资金
- Scientific and Technological Research Council of Turkey (TUBITAK) [2214/A]
- Ege University, Scientific Research Project (BAP) [16 NBE 001]
Photodynamic therapy (PDT) is a noninvasive therapy based on the photodynamic effect. In this study, we sought to determine intracellular uptake and in vivo photodynamic therapy potential of Zn phthalocyanine-loaded mesoporous silica nanoparticles (MSNPS) against pancreatic cancer cells. MSNPS were labeled with I-131; the radiolabeling efficiency was found to 95.5 +/- 1.2% in pH 9 and 60 min reaction time. Besides, the highest intracellular uptake yields of I-131-MSNPS nanoparticles in MIA PaCa-2, AsPC-1, and PANC-1 cells were determined as 43.9 +/- 3.8%, 41.8 +/- 0.2%, and 37.9 +/- 1.3%, respectively, at 24 h incubation time. In vivo PDT studies were performed with subcutaneous xenograft cancer model nude mice with AsPC-1 pancreatic cancer cells. For photodynamic therapy, 685 nm red laser light 100 J/cm(2) light dose using and 5-20 mu M ZnPc containing MSNPS concentrations were applied. Histopathological studies revealed that the ratio of necrosis in tumor tissue was higher in the treatment group than the control groups.
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