NIR-II window absorbing graphene oxide-coated gold nanorods and graphene quantum dot-coupled gold nanorods for photothermal cancer therapy

被引：5
作者：
Lebepe, Thabang C. [1 ,2 ]
Parani, Sundararajan [1 ,2 ]
Maluleke, Rodney [1 ,2 ]
Ncapayi, Vuyelwa [1 ,2 ]
Aladesuyi, Olanrewaju A. [1 ,2 ]
Komiya, Atsuki [3 ]
Kodama, Tetsuya [4 ,5 ]
Oluwafemi, Oluwatobi S. [1 ,2 ]
机构：
[1] Univ Johannesburg, Dept Chem Sci, ZA-2028 Johannesburg, South Africa
[2] Univ Johannesburg, Ctr Nanomat Sci Res, ZA-2028 Johannesburg, South Africa
[3] Tohoku Univ, Inst Fluid Sci, Grad Sch Engn, Sendai 9808577, Japan
[4] Tohoku Univ, Grad Sch Biomed Engn, Lab Biomed Engn Canc, Sendai 9808575, Japan
[5] Tohoku Univ, Biomed Engn Canc Res Ctr, Grad Sch Biomed Engn, Sendai 9808575, Japan
来源：
NANOTECHNOLOGY REVIEWS | 2023年 / 12卷 / 01期
基金：
芬兰科学院; 新加坡国家研究基金会;
关键词：
gold nanorods; graphene oxide; graphene quantum dots; stability; cytotoxicity; photothermal therapy; DESIGN; GROWTH;
D O I：
10.1515/ntrev-2022-0541
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The graphene-based materials have been used as a potential coating material for nanoparticles due to their excellent passivation. Herein, we report for the first time the colloidal stability, photothermal profile, thermal stability, cytotoxicity, and photo-cytotoxicity of graphene quantum dots (GQDs) coupled with the second infrared window (NIR-II) absorbing gold nanorods (AuNRs/GQDs) and compare it to graphene oxide (GO)-coated NIR-II absorbing AuNRs (AuNRs/GO). The composites were achieved by electrostatic interaction of the GO or GQDs with AuNRs. The results revealed that (i) AuNRs/GQDs were more stable in the aqueous phosphate buffer and cell culture media than AuNRs/GO and AuNRs; (ii) GO enhanced the photothermal efficiency of the AuNRs, whereas GQDs reduced it; (iii) GQDs enhanced the photothermal stability of AuNRs than GO; (iv) both AuNRs/GO and AuNRs/GQDs were biocompatible with mouse colon carcinoma (C26) cell lines and malignant fibrous histiocytoma-like, expressing a fusion of the luciferase and enhanced green fluorescent protein genes (KM-Luc/GFP) cell lines; and (v) photo-cytotoxicity of AuNRs/GO and AuNRs/GQDs conducted against C26 cell lines showed significantly improved cell death compared to laser irradiation alone; however, AuNRs/GO exhibited high photo-toxicity than AuNRs/GQDs. This study shows that AuNRs/GO and AuNRs/GQDs composites possess unique properties to improve AuNRs and be utilised in photothermal applications.
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页数：13
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