Minimizing the Heat Effect of Photodynamic Therapy Based on Inorganic Nanocomposites Mediated by 808 nm Near-Infrared Light
Journal
Small
Date Issued
2017
Author(s)
Ming-Hsien Chan
Yu-Ting Pan
I-Jung Lee
Chieh-Wei Chen
Yung-Chieh Chan
Michael Hsiao
Feng Wang
Lingdong Sun
Xueyuan Chen
Abstract
Photodynamic therapy (PDT) based on photosensitizers (PSs) constructed with nanomaterials has become popular in cancer treatment, especially oral carcinoma cell. This therapy is characterized by improved PS accumulation in tumor regions and generation of reactive oxygen species (ROS) for PDT under specific excitation. In the selection of near-infrared (NIR) window, 808 nm NIR light because it can avoid the absorption of water is particularly suitable for the application in PDT. Hence, multiband emissions under a single 808 nm near-infrared excitation of Nd3+-sensitized upconversion nanoparticles (808 nm UCNPs) have been applied for the PDT effect. 808 nm UCNPs serve as light converter to emit UV light to excite inorganic PS, graphitic carbon nitride quantum dots (CNQDs), thereby generating ROS. In this study, a nanocomposite consisting UCNPs conjugated with poly-l-lysine (PLL) to improve binding with CNQDs is fabricated. According to the research results, NIR-triggered nanocomposites of 808 nm UCNP-PLL@CNs have been verified by significant improvement in ROS generation. Consequently, 808 nm UCNP-PLL@CNs exhibit high capability for ROS production and efficient PDT in vitro and in vivo. Moreover, the mechanism of PDT treatment by 808 nm UCNP-PLL@CNs is evaluated using the cell apoptosis pathway. ? 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Subjects
808 nm near-infrared light; bioimaging; graphitic carbon nitride quantum dots; photodynamic therapy; upconversion nanoparticles
Other Subjects
Amino acids; Carbon nitride; Cell death; Infrared devices; Nanocomposites; Nanocrystals; Nanoparticles; Nitrides; Phase locked loops; Photosensitizers; Semiconductor quantum dots; Water absorption; Bio-imaging; Graphitic carbon nitrides; High capabilities; Near infrared light; Near-infrared excitation; Photodynamic therapy (PDT); Reactive oxygen species; Upconversion nanoparticles; Photodynamic therapy; DNA; nanocomposite; nanoparticle; photosensitizing agent; chemistry; human; infrared radiation; photochemotherapy; procedures; Raman spectrometry; DNA; Humans; Infrared Rays; Nanocomposites; Nanoparticles; Photochemotherapy; Photosensitizing Agents; Spectrum Analysis, Raman
Publisher
Wiley-Blackwell
Type
journal article