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金纳米星诊疗剂的光热特性及其在光热治疗和光学相干层析成像中的应用研究

吴哲 陆冬筱 李金华

吴哲, 陆冬筱, 李金华. 金纳米星诊疗剂的光热特性及其在光热治疗和光学相干层析成像中的应用研究[J]. 中国光学(中英文), 2022, 15(2): 233-241. doi: 10.37188/CO.2021-0205
引用本文: 吴哲, 陆冬筱, 李金华. 金纳米星诊疗剂的光热特性及其在光热治疗和光学相干层析成像中的应用研究[J]. 中国光学(中英文), 2022, 15(2): 233-241. doi: 10.37188/CO.2021-0205
WU Zhe, LU Dong-xiao, LI Jin-hua. Photothermal properties of gold nanostars therapeutic agent and its application in photothermal therapy and optical coherence tomography[J]. Chinese Optics, 2022, 15(2): 233-241. doi: 10.37188/CO.2021-0205
Citation: WU Zhe, LU Dong-xiao, LI Jin-hua. Photothermal properties of gold nanostars therapeutic agent and its application in photothermal therapy and optical coherence tomography[J]. Chinese Optics, 2022, 15(2): 233-241. doi: 10.37188/CO.2021-0205

金纳米星诊疗剂的光热特性及其在光热治疗和光学相干层析成像中的应用研究

doi: 10.37188/CO.2021-0205
基金项目: 吉林省科技发展计划项目(No. 20210101155JC);国家自然科学基金资助项目(No. 62174015);教育部“111”创新引智项目(No. D17017);吉林省教育厅项目(No. JJKH20200730KJ,No. JJKH20210798KJ)
详细信息
    作者简介:

    吴 哲(1996—),男,吉林白城人,硕士研究生,2018年于延边大学获得理学学士学位,主要从事纳米功能材料的制备、光物理特性及其在生物成像与光热治疗中的应用研究。E-mail: w_zhello@163.com

    陆冬筱(1988—),女,吉林长春人,博士,讲师,2016年于吉林大学获得博士学位,主要从事低维纳米材料的物性及其在生物医学诊断与治疗方面的研究工作。E-mail: ludongxiao@cust.edu.cn

    李金华(1977—),女,吉林长春人,博士,教授,2006年于中国科学院长春光学精密机械与物理研究所获得博士学位,主要从事纳米技术、光子学技术在生物研究及医学诊断与治疗应用方面的研究工作。E-mail: lijh@cust.edu.cn

  • 中图分类号: O469

Photothermal properties of gold nanostars therapeutic agent and its application in photothermal therapy and optical coherence tomography

Funds: Supported by Developing Project of Science and Technology of Jilin Province (No. 20210101155JC); National Natural Science Foundation of China (No. 62174015); the “111” Project of China (No. D17017); Project of Education Department of Jilin Province(No. JJKH20200730KJ, No. JJKH20210798KJ)
More Information
  • 摘要: 为了开发一种优异的用于光热治疗和光学相干层析成像的金纳米星诊疗剂,对金纳米星的制备、光热特性以及光热治疗和光学相干层析成像中的应用进行研究。利用尖端结构增强金纳米材料的局域表面等离子体共振特性,通过种子介导法制备了多枝化的金纳米星,多尖端的结构使其具有明显的光热效果,并探究了其作为光热治疗的诊疗剂和光学相干层析成像造影剂的效果。实验结果表明:多枝化的金纳米星诊疗剂相比于金纳米粒子具有较高的光热转换效率,达到42%;具有较好的生物兼容性,在100 μg/mL浓度下,人乳腺癌细胞存活率为82%;而且具有较好的癌细胞光热治疗效果,在100 μg/mL浓度下,经激光照射后,人乳腺癌细胞被有效杀死,其存活率降至37%;同时,金纳米星诊疗剂还具有较好的光学相干层析成像造影效果,可显著提高信号强度和造影深度。金纳米星诊疗剂既具有高效光热治疗能力,又具备优异光学相干层析成像造影成像能力,是一种非常有前景的多功能诊疗剂。

     

  • 图 1  金纳米星的表征。Ag+浓度分别为(a)1 mM,(b)2 mM和(c)4 mM金纳米星的透射电子显微镜照片。(d)金纳米星的XRD图谱。(e)金纳米星的粒径分析。(f)金纳米星的吸收光谱

    Figure 1.  Characterization of AuSTs. Transmission electron micrographs of gold nanostars with Ag+ concentrations of (a) 1 mM, (b) 2 mM and (c) 4 mM. (d) XRD patterns of AuSTs. (e) Particle size of AuSTs. (f) Absorption spectra of AuSTs

    图 2  金纳米星的光热性能测试。(a)AuSTs在808 nm激光不同功率密度下的温度-时间曲线。在808 nm,2 W/cm2激光照射下。(b)不同Ag+浓度制备的AuSTs的温度-时间曲线。(c)不同浓度金纳米星的温度-时间曲线。(d)AuSTs、AuNPs和去离子水的温度-时间曲线。(e)金纳米星系统的光热稳定性测试。(f)金纳米星系统的特征热时间常数

    Figure 2.  Photothermal property of AuSTs. (a) Temperature-time curves of AuSTs at different power densities. Under 808 nm, 2 W/cm2 laser irradiation. (b) Time-temperature curve of AuSTs prepared with different Ag+ concentrations. (c) Temperature-time curves of AuSTs at different concentrations. (d) Temperature-time curves of AuSTs, AuNPs and DI Water. (e) Photothermal stability of AuSTs. (f) Graph of cooling period of the time versus negative natural logarithm of the temperature

    图 3  金纳米星诊疗剂的生物兼容性测试

    Figure 3.  Biocompatibility test of AuSTs

    图 4  金纳米星诊疗剂的光热治疗效果

    Figure 4.  The photothermal therapy effect of AuSTs

    图 5  AuSTs作为造影剂在OCT成像中的效果。(a)加入去离子水的组织体模。(b)嵌入PEG-200的体模成像效果。(c)嵌入AuSTs的体模成像效果。(d)对(a)、(b)和(c)中框选区域的信号强度统计。鲫鱼眼部AuSTs造影剂注射前(e)和注射后(f)的OCT成像效果。(g)对(e)和(f)中框选区域的信号强度统计

    Figure 5.  OCT imaging with AuSTs as contrast agents. OCT image of simulated tissue with (a) DI water, (b) PEG-200, and (c) AuSTs. (d) OCT signal intensity on depth of simulated tissue with DI water, PEG-200 and AuSTs. The OCT imaging effects of AuSTs in the eyes of crucian carp before (e) and after (f) injection. (g) Statistics on the signal strength of the area selected in (e) and (f)

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出版历程
  • 收稿日期:  2021-11-25
  • 修回日期:  2021-12-16
  • 录用日期:  2022-02-12
  • 网络出版日期:  2022-02-15
  • 刊出日期:  2022-03-21

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