波谱学杂志 ›› 2016, Vol. 33 ›› Issue (4): 627-634.doi: 10.11938/cjmr20160412

• 研究论文 • 上一篇    下一篇

靶向肺癌干细胞的多肽Gd基T1型MRI探针的研究

张宏岩1,2, 李春林2, 英晓芳2, 魏建东1, 张海禄2, 邓宗武2, 朱毅敏2, 谭波2   

  1. 1. 上海大学 环境与化学工程学院, 上海 200444;
    2. 中国科学院 苏州纳米技术与纳米仿生研究所, 江苏 苏州 215123
  • 收稿日期:2016-03-03 修回日期:2016-10-25 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: 谭波,电话:0512-62872631,E-mail:btan2012@sinano.ac.cn E-mail:btan2012@sinano.ac.cn
  • 作者简介:张宏岩(1990-),女,安徽六安人,硕士研究生,应用化学专业
  • 基金资助:
    国家自然科学基金资助项目(31371010).

A Gadolinium-Based T1 MRI Probe for Detection of Lung Cancer Stem Cells

ZHANG Hong-yan1,2, LI Chun-lin2, YING Xiao-fang2, WEI Jian-dong1, ZHANG Hai-lu2, DENG Zong-wu2, ZHU Yi-min2, TAN Bo2   

  1. 1. Institute of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;
    2. Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, China
  • Received:2016-03-03 Revised:2016-10-25 Online:2016-12-05 Published:2016-12-05

摘要: 用固相多肽合成技术制备了特异性靶向肺癌干细胞的T1型多肽核磁共振成像(MRI)探针——Gd-DOTA-HCBP-1.在11.7 T静磁场条件下,其纵向弛豫效率(r1)为6.15 mmol-1·L·s-1,是商用T1造影剂Dotarem的1.6倍.体外细胞成像表明,此探针的使用可显著提高肺癌干细胞克隆球的可观测性,单个克隆球(包含2 000~4 000个细胞)可被明显辨识.

关键词: 多肽分子探针, T1造影剂, 肺癌干细胞, 磁共振成像(MRI)

Abstract: A T1 magnetic resonance imaging (MRI) contrast agent specific to lung cancer stem cells Gd-DOTA-HCBP-1 was synthesized by solid-phase peptide synthesis technology. Its longitudinal relaxation rate (r1) was 6.15 mmol-1·L·s-1, approximately 0.6 times higher than that of the commercial T1 contrast agents Dotarem at 11.7 T. In vitro MRI experiments indicated that the detectability of the cancer stem cells could be significantly improved to about 2 000~4 000 cells per sphere by the use of the probe.

Key words: peptide molecular probe, lung cancer stem cells, MRI, T1 contrast agent

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