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相关概念视频

Labeling DNA Probes03:31

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...

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相关实验视频

Updated: Jun 12, 2026

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

多功能合物用于准备核向的CdS量子点.

Ran Shen1, Xiaoqin Shen, Zengming Zhang

  • 1CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.

Journal of the American Chemical Society
|June 4, 2010
PubMed
概括

一个新型的配体,TA,被合成,以创建稳定的,水性硫化物 (CdS) 量子点 (QDs). 这些TA-CdS QD有效地准癌细胞核,与传统的QD不同.

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 生物医学工程 生物医学工程

背景情况:

  • 量子点 (QD) 是具有独特光学特性的纳米材料.
  • 开发稳定,水性QDs用于生物应用是具有挑战性的.
  • 针对特定的细胞组件,如细胞核,需要对功能表面进行修改.

研究的目的:

  • 为水性CdS QDs合成一种新型双酸连接体 (TA).
  • 描述TA-CdS QD复合体及其稳定性.
  • 评估TA-CdS QDs的细胞准能力.

主要方法:

  • 点击反应以获得TA连接物合成.
  • TA结合的CdS QDs的合成和表征.
  • 光谱 (XPS,拉曼,NMR) 和电化学分析.
  • 光稳定性测试和DNA相互作用测试.
  • 使用光显微镜和TEM进行细胞成像.

主要成果:

  • TA-CdS QD 显示了双光发射峰值.
  • 通过光谱学证实了TA和CdS之间的协调.
  • TA-CdS QDs在各种pH和离子强度中表现出高稳定性.

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Compact Quantum Dots for Single-molecule Imaging
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Compact Quantum Dots for Single-molecule Imaging

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Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count
13:06

Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count

Published on: July 11, 2012

相关实验视频

Last Updated: Jun 12, 2026

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count
13:06

Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count

Published on: July 11, 2012

  • TA连接体显示出强烈的DNA相互作用.
  • TA-CdS QD 选择性地准癌细胞核,不同于用硫糖醇酸覆盖的 QD.

    • 结论:

    • 双酸TA配体可以制备稳定,水性CdS QDs.
    • TA-CdS QDs具有卓越的稳定性和DNA结合亲和力.
    • TA-CdS QD显示了针对癌细胞核细胞成像的有希望的潜力.