中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (39): 6369-6374.doi: 10.3969/j.issn.2095-4344.2014.39.024

• 生物材料综述 biomaterial review • 上一篇    下一篇

金纳米颗粒在肿瘤放射增敏治疗中的应用:如何最大效应利用金纳米棒?

沈  蕾,高  斌,贺克武   

  1. 安徽医科大学第三附属医院,安徽省合肥市  230061
  • 出版日期:2014-09-17 发布日期:2014-09-17
  • 通讯作者: 高斌,教授,主任医师,安徽医科大学第三附属医院影像中心主任,介入放射科主任,硕士生导师,安徽医科大学第三附属医院,安徽省合肥市 230061
  • 作者简介:沈蕾,女,1987年生,安徽省合肥市人,汉族,安徽医科大学在读硕士,医师,主要从事医学影像诊断研究。
  • 基金资助:

     国家自然科学基金面上项目(81071240)

Gold nanoparticles in tumor sensitize radiotherapy: how to maximize the effect of gold nanorods?

Shen Lei, Gao Bin, He Ke-wu   

  1. Third Affiliated Hospital, Anhui Medical University, Hefei 230061, Anhui Province, China
  • Online:2014-09-17 Published:2014-09-17
  • Contact: Gao Bin, Professor, Chief physician, Master’s supervisor, Third Affiliated Hospital, Anhui Medical University, Hefei 230061, Anhui Province, China
  • About author:Shen Lei, Studying for master’s degree, Physician, Third Affiliated Hospital, Anhui Medical University, Hefei 230061, Anhui Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81071240

摘要:

背景:金纳米棒具有独特的光学性质、良好的组织相容性、易控的表面修饰性,其在生物及医学领域有着广阔的应用前景。

目的:综述金纳米颗粒特别是金纳米棒的光学性质、光热疗法及对肿瘤放射增敏的机制与研究进展。

 

方法:由作者检索PubMed数据库和中国知网数据库获得文献,英文检索词为“gold nanoparticles, radiotherapy sensitivity”,中文检索词为“金纳米颗粒,放疗增敏”。纳入用于体内外临床研究的金纳米颗材料,以及与肿瘤放疗敏感相关的金纳米颗粒研究。

 

结果与结论:金纳米颗粒拥有独特的表面等离子共振效应,与传统球形金纳米颗粒不同的是,金纳米棒具有2个表面等离子共振效应峰,分别对应其横轴和纵轴2个特征尺寸。通过控制不同纵横轴比能够实现纵向表面等离子共振效应峰位置的人为调控,为金纳米棒自由进入近红外光区开辟了一条有效路径。金纳米棒具有低毒、高效、高产而作为一种新颖放射增敏剂,其增敏作用不仅与照射剂量、自身浓度、自身尺寸、表面修饰物有关,尚与放射线的种类和所取得细胞系种类等多种因素相关。但金纳米棒放射增敏作用如何避免放射线种类的限制、如何选择适宜修饰物提高靶向性高效杀伤肿瘤,以及如何最大程度利用金纳米棒等还需进一步优化和深入。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 纳米材料, 金纳米颗粒, 表面等离子共振, 光热特性, 肿瘤, 放疗, 增敏, 放射性核素, 国家自然科学基金

Abstract:

BACKGROUND: Gold nanorods have unique optical properties, good histocompatibility, easily controlled surface modification, which have a broad application prospect in the field of biology and medicine.

OBJECTIVE: To summarize the optical and thermal properties of gold nanoparticles, and to review the mechanism and research advances of gold nanoparticles, especially gold nanorods in tumor sensitize radiotherapy.

 

METHODS: A computer-based search of PubMed and CNKI databases was undertaken with the keywords of “gold nanoparticles, radiotherapy sensitivity” in English and Chinese, respectively. The included articles were related to nanoparticles used in vitro and in vivo for clinic study as well as gold nanoparticles-related tumor sensitize radiotherapy.

 

RESULTS AND CONCLUSION: Gold nanoparticles exhibit unique properties of surface plasmon resonance properties. Compared with the traditional spherical gold nanoparticles, gold nanorods are capsule-like gold nanoparticles containing two absorption peaks that are a transverse surface plasmon resonance absorption peak and a longitudinal surface plasmon resonance absorption peak corresponding to the dimensional characteristics of their horizontal axis and vertical axis, respectively. By regulation of the ratio of horizontal axis and vertical axis, we can realize the manipulation of the longitudinal surface plasmon resonance absorption peak location. Thus, the longitudinal surface plasmon resonance absorption peak can be changed from visible region to the near-infrared region which is the most ideal optical transmission through for all of biological tissues. As a kind of novel radiotherapy sensitization agent, gold nanorods have the properties of low toxicity, high efficiency, high yield. Its sensitization effect is not only related to the exposure dose, own concentration and size, surface modified compounds, but also related to the types of radiation and cell lines. However, for radiotherapy sensitization of gold nanorods how to avoid the limits of radioactive ray species, choose appropriate trim and maximize the use of gold nanorods still need a further research.

 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: nanoparticles, neoplasms, review

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