高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (8): 20230044.doi: 10.7503/cjcu20230044
收稿日期:
2023-02-02
出版日期:
2023-08-10
发布日期:
2023-05-11
通讯作者:
张瑞平
E-mail:zrp_7142@sxmu.edu.cn
基金资助:
SUN Jinghua, GUO Chunyan, DONG Jie, ZHANG Ruiping()
Received:
2023-02-02
Online:
2023-08-10
Published:
2023-05-11
Contact:
ZHANG Ruiping
E-mail:zrp_7142@sxmu.edu.cn
Supported by:
摘要:
为提高小尺寸黑色素纳米颗粒(MNP)在肿瘤部位的靶向效应, 设计合成了一种在肿瘤微酸性环境下可降解的羟基磷灰石杂化介孔氧化硅(MSN/HAP)对其进行负载, 结合RGD导向肽构建了一种新型靶向纳米药物(MAN/HAP-MNP-RGD), 用于小鼠乳腺癌的多模态成像和光热治疗. 对纳米颗粒进行了理化性能、 细胞和活体实验. 结果表明, 颗粒尺寸约为60 nm, MNP的负载量为37.7%, 在微酸性环境中呈现较好的降解性, 且纳米颗粒的光热转化效率(η)高达40.29%. 细胞实验结果也证明了纳米颗粒的高效摄取和对细胞的光热杀伤效果. 此外, 光声成像和磁共振成像结果表明, 纳米颗粒在肿瘤部位表现出更高的累积和更长时间的滞留. 活体实验结果证明, MAN/HAP-MNP-RGD具有最佳的治疗效果且具有很高的生物安全性, 展现出潜在的应用前景.
中图分类号:
TrendMD:
孙菁华, 郭春燕, 董杰, 张瑞平. 黑色素基靶向纳米药物用于乳腺癌的光热治疗. 高等学校化学学报, 2023, 44(8): 20230044.
SUN Jinghua, GUO Chunyan, DONG Jie, ZHANG Ruiping. Melanin-based Targeted Nanodrugs for Photothermal Therapy of Breast Cancer. Chem. J. Chinese Universities, 2023, 44(8): 20230044.
Fig.5 Concentration⁃dependent thermal infrared images(A) and temperature variations(B) of MSN/HAP⁃MNP⁃RGD solutions within 5 min under 808 nm laser irradiation(1 W/cm2)
Fig.6 Laser power densities⁃dependent thermal infrared images(A) and temperature variations(B) of MSN/HAP⁃MNP⁃RGD solutions within 5 min under 808 nm laser irradiation(100 μg/mL)
Fig.8 Heating and cooling curves of MSN/HAP⁃MNP⁃RGD solution(100 μg/mL) measured with irradiation of 808 nm laser(1 W/cm2)/(A) and the linear time data and -lnθ acquired from the cooling period(B)
Fig.9 Cytotoxicity of MNP, MSN/HAP, MSN/HAP⁃MNP and MSN/HAP⁃MNP⁃RGD against 4T1 cells with respect to their concentrationsThe data are shown as mean ± standard deviation(SD). Error bars represent standard deviation(n=6); *P<0.05, **P<0.01, ***P<0.001.
Fig.10 Representative flow cytometric analysis of 4T1 cells incubation with FITC⁃labeled MSN/HAP⁃MNP(A—D) and MSN/HAP⁃MNP⁃RGD(E—H) nanoparticles at 100 μg/mL for 0 h(A, E), 1 h(B, F), 3 h(C, G) and 6 h(D, H)
Fig.11 Fluorescence images of Calcein AM/PI⁃stained 4T1 cells incubated with PBS, MNP, MSN/HAP, MSN/HAP⁃MNP and MSN/HAP⁃MNP⁃RGD without laser or with laser treatments
Fig.12 PA and MR imaging invivoPA images(A) and MR images(B) of tumor sites at different time points after intravenous injection of MNP-Mn and MSN/HAP-MNP-Mn-RGD; (C) quantitative results of PA signals at different time points in tumor sites, the data are shown as mean ± standard deviation(SD), error bars represent standard deviation(n=3), *P<0.05, **P<0.01, ***P<0.001; (D) quantitative results of MR signals at different time points in tumor sites, the data are shown as mean ± standard deviation(SD), error bars represent standard deviation(n=3), *P<0.05, **P<0.01, ***P<0.001.
Fig.13 Photothermal therapy in vivo and anti⁃tumor ability(A) Whole-body photothermal images of tumor-bearing nude mice; (B) temperature variation curves; (C) tumor growth curves; (D) photographs of tumors removed after 14 days of treatment; (E) representative photographs of tumor-bearing mice; (F) body weight curves of mice; (G) H&E stained and TUNEL stained images of tumors(scale bar=100 µm) after treated with PBS, MSN/HAP, MNP, MSN/HAP-MNP or MSN/HAP-MNP-RGD following by an 808 nm laser irradiation within 5 min.
Fig.14 Haematological and histological analysis(A) Tail vein high dose injection of the same volume of nanoprobe and PBS in healthy mice to examine their liver function ALT and AST; (B) kidney function of blood creatinine SCr; (C) blood urea nitrogen BUN, the data are shown as mean±standard deviation(SD), error bars represent standard deviation(n=3), *P<0.05, **P<0.01, ***P<0.001; (D) H&E stained images of major organs of mice. (A—C) a. PBS; b. MSN/HAP; c. MSN; d. MSN/HAP⁃MNP; e. MSN/HAP⁃MNP⁃RGD.
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