A heavy atom-free copolymer for light triggered photodynamic and photothermal therapy of human prostate cancer cells. (14th August 2019)

• Record Type: Journal Article
• Authors: Shen, Jian; Ke, Zhen; Chen, Jianjiao; Zou, Zhenyuan; Sun, Liguo; Zou, Dengfeng
• Is Part Of: New journal of chemistry. Volume 43:Number 34(2019)
• Page Start: 13670
• Page End: 13674
• Publication Date: 2019-08-14
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj00941h
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : In this paper, a heavy-atom free co-polymer (NDTT ) with high singlet oxygen quantum yield (48.2%) has been designed and prepared. Abstract : In this paper, a heavy atom-free co-polymer (NDTT ) with high singlet oxygen quantum yield (48.2%) has been designed and prepared. This polymer can be self-assembled to form uniform nanoparticles (NPs) in water. Such NPs still retain singlet oxygen generation ability with SOSG (singlet oxygen sensor green) as a probe and high photothermal conversion efficacy (35.2%). An in vitro MTT assay indicates that these NPs have a low half inhibitory concentration (IC50 ) of only 5.8 μg mL −1 on human prostate cancer (Du145). Moreover, in vivo investigation suggests that the growth of tumors of nude mice can be completely suppressed upon irradiation while those of the control and no illumination groups increase at a high speed, demonstrating the high phototoxicity as well as low dark toxicity ofNDTT NPs. However, the normal organs, including the liver, lungs, spleen, heart and kidneys suffer from no damage, as indicated by the H&E stained pictures. Our results show thatNDTT is a potential candidate for imaging guided photothermal and photodynamic synergistic therapy of prostate cancer clinically.