A Multifunctional Low-Temperature Photothermal Nanomedicine for Melanoma Treatment via the Oxidative Stress Pathway Therapy

Abstract

Dou Zhang,1,2,* Xuyi Liu,1,2,* Xiong Li,3,* Xinyi Cai,1,2 Zhenying Diao,1,2 Long Qiu,1,2 Xuelin Chen,1,2 Yuyu Liu,1,2 Jianbo Sun,1 Daxiang Cui,1,4 Qiaoyuan Ye,5 Ting Yin1,2 1Research Center of Nano Technology and Application Engineering, The First Dongguan Affiliated Hospital, School of Pharmacy, Guangdong Medical University, Dongguan, Guangdong, 523808, People’s Republic of China; 2Dongguan Biomedical Nano Engineering Technology Research Center, Guangdong Medical University, Dongguan, Guangdong, 523808, People’s Republic of China; 3Department of Pharmacy, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, Guangdong, 519000, People’s Republic of China; 4School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China; 5Department of Dermatology and Venereology, Second Clinical Medical College of Guangdong Medical University, Dongguan, Guangdong, 523808, People’s Republic of China*These authors contributed equally to this workCorrespondence: Qiaoyuan Ye, Department of Dermatology and Venereology, Second Clinical Medical College of Guangdong Medical University, Dongguan, Guangdong, 523808, People’s Republic of China, Email [email protected] Ting Yin, Research Center of Nano Technology and Application Engineering, School of Pharmacy, Guangdong Medical University, Dongguan, Guangdong, 523808, People’s Republic of China, Email [email protected]: Melanoma is a highly aggressive and dangerous malignant skin tumor and there is an urgent need to develop effective therapeutic approaches against melanoma. The main objective of this study was to construct a multifunctional nanomedicine (GNR@PEG-Qu) to investigate its therapeutic effect on melanoma from the oxidative stress pathway.Methods: First, the nanomedicine GNR@PEG-Qu was synthesized and characterized, and its photothermal and antioxidant properties were confirmed. In addition, in vivo imaging capabilities were observed. Finally, the tumor inhibitory effects of GNR@PEG-Qu in vivo and in vitro as well as its biosafety were observed.Results: GNR@PEG-Qu shows good photothermal and anti-oxidation properties. Following exposure to 1064 nm laser irradiation in the second near-infrared II (NIR-II) window, GNR@PEG-Qu shows anti-tumor ability through low-temperature photothermal therapy (PTT) adjuvant drug chemotherapy. GNR@PEG-Qu makes full use of the antioxidant capacity of quercetin, reduces ROS levels in melanoma, alleviates oxidative stress state, and achieves “oxidative stress avoidance” at the tumor site. Quercetin can also downregulate the expression of the heat shock protein Hsp70, which will improve the thermal sensitivity of the tumor site and enhance the efficacy of low-temperature PTT.Conclusion: GNR@PEG-Qu nanoagent exhibits synergistic treatment and high tumor inhibition effects, which is a promising strategy developed to achieve oxidative stress avoidance and synergistic therapy of melanoma using quercetin (Qu)-coated gold nanorod (GNR@PEG).Keywords: melanoma, gold nanorods, quercetin, chemo-photothermal therapy, oxidative stress

Keywords

• melanoma
• gold nanorods
• quercetin
• chemo-photothermal therapy
• oxidative stress