吲哚菁绿金纳米笼的制备及体外抗肿瘤活性研究
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篇名: 吲哚菁绿金纳米笼的制备及体外抗肿瘤活性研究
TITLE:
摘要: 目的:制备吲哚菁绿金纳米笼(ICG/Biotin-PEG-AuNC-PCM),研究其体外抗肿瘤活性。方法:使用多元醇还原法制备银纳米立方体(AgNC)作为模板,通过离子置换反应制备金纳米笼(AuNC)。对AuNC形貌、粒径及近红外(NIR)光热性质进行表征。使用有机溶剂挥发法制备装载ICG、1-十四醇(PCM)、表面修饰生物素聚乙二醇巯基(Biotin-PEG-SH)的ICG/Biotin-PEG-AuNC-PCM,检测其粒径、多分散系数(PDI)、载药量,考察其在37、40 ℃下180 min内的体外累积释放度(Q)。以耐阿霉素人乳腺癌细胞(MCF-7/ADR细胞)为研究对象,采用MTT法考察ICG、ICG/PEG-AuNC-PCM、ICG/Biotin-PEG-AuNC-PCM的抗肿瘤活性,计算半数抑制浓度(IC50)。结果:AuNC为立方体,粒径为60 nm左右,具有良好的光热性质。ICG/Biotin-PEG-AuNC- PCM的粒径为(105±2.8) nm,PDI为0.261±0.02(n=3);载药量为1.34×108 g/mol AuNC;37 ℃下Q180 min约为10%,40 ℃下Q20 min约为80%。ICG、ICG/PEG-AuNC-PCM、ICG/Biotin-PEG-AuNC-PCM对MCF-7/ADR细胞的IC50分别为95.2、29.3、16.1 μg/mL。结论:成功制得ICG/Biotin-PEG-AuNC-PCM,其对MCF-7/ADR细胞的抗肿瘤活性强于ICG。
ABSTRACT: OBJECTIVE: To prepare the Indocyanine green gold nanocages (ICG/Biotin-PEG-AuNC-PCM), and study its antitumor activity. METHODS: Polyol reduction method was used to prepare silver nanometer cubes (AgNC) as template, ion exchange reaction was used to prepare gold nanocages (AuNC) to characterize its morphology, particle size, near infrared (NIR) light and heat properties. Organic solvent evaporation method was conducted to prepare the ICG/Biotin-PEG-AuNC-PCM loaded with ICG, 1-tetradecanol (PCM), surface modification of biotin polyethylene glycol mercapto (Biotin-PEG-SH). Its particle size, polydispersity index (PDI) and drug loading were detected, and in vitro cumulative release (Q) within 180 min under 37, 40 ℃ was investigated. Using adriamycin-resistant human breast cancer cells (MCF-7/ADR cells) as objects, MTT method was used to investigate the antitumor activities of ICG, ICG/PEG-AuNC-PCM and ICG/Biotin-PEG-AuNC-PCM, and half inhibitory concentration (IC50) was calculated. RESULTS: AuNC was cubic with particle size of about 60 nm and good light and heat properties. The particle size of ICG/Biotin-PEG-AuNC-PCM was (105±2.8) nm, PDI was 0.261±0.02 (n=3). Drug loading was 1.34×108 g/mol AuNC, Q180 min was about 10% under 37 ℃ and Q20 min was about 80% under 40 ℃. IC50 of ICG, ICG/PEG-AuNC-PCM and ICG/Biotin-PEG-AuNC-PCM on MCF-7/ADR cells was 95.2, 29.3, 16.1 μg/mL, respectively. CONCLUSIONS: ICG/Biotin-PEG- AuNC-PCM is successfully prepared, and the antitumor activity on MCF-7/ADR cells is stronger than ICG.
期刊: 2017年第28卷第22期
作者: 俞燕娜,李方舟,朱浩,沈园园
AUTHORS: YU Yanna,LI Fangzhou,ZHU Hao,SHEN Yuanyuan
关键字: 金纳米笼;吲哚菁绿;光热性质;抗肿瘤活性
KEYWORDS: Gold nanocages; Indocyanine green; Light and heat property; Antitumor activity
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