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相关概念视频

Labeling DNA Probes03:31

Labeling DNA Probes

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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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Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

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A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
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Fixation and Sectioning01:03

Fixation and Sectioning

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Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
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相关实验视频

Updated: Jun 28, 2025

Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes
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一个远红色光探头可视化患者样本中的格兰美阳性细菌.

Krittapas Jantarug1, Vishwachi Tripathi2, Benedict Morin3

  • 1Department of Chemistry, University of Zurich, Zurich 8057, Switzerland.

ACS infectious diseases
|April 18, 2024
PubMed
概括

研究人员开发了一种新的远红色光探针,用于在深层人体感染中可视化像金黄色葡萄球菌 (Staphylococcus aureus) 这样的阳性细菌. 这种先进的探测器在组织中提供了卓越的检测,有助于微生物学研究和诊断.

关键词:
格拉姆阳性菌种.黄金色的S. 黄金色的光探测器的光探测器影像成像技术 影像成像技术超分辨率显微镜的显微镜.这就是Vancomycin.

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相关实验视频

Last Updated: Jun 28, 2025

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科学领域:

  • 微生物学 微生物学
  • 生物医学成像技术 生物医学成像技术
  • 传染性疾病 传染性疾病

背景情况:

  • 格拉姆阳性细菌,特别是金黄色葡萄球菌,是高收入国家死亡和疾病的主要原因.
  • 黄金葡萄球菌感染导致长时间住院,经济成本显著,治疗失败,死亡率高.
  • 了解感染期间黄金葡萄球菌的确切位置至关重要,但目前有限.

研究的目的:

  • 开发和验证一种新的远红色光探针,用于检测阳性细菌.
  • 从深层感染中专门针对人类活检中的金黄色葡萄球菌.
  • 提供一种改进的工具,用于可视化复杂的生物样本中的细菌存在.

主要方法:

  • 开发一种远红色光探针,对阳性细菌具有很高的特异性.
  • 在人体组织活检中验证探针的性能.
  • 应用的演示,包括固定和活细胞成像,流细胞计和超分辨率显微镜.

主要成果:

  • 开发的探测器在人体组织中表现出强烈的光和最小的背景噪声.
  • 与现有的黄金菌球菌检测方法相比,它表现出优越的性能.
  • 在各种成像和细胞测量应用中成功可视化了细菌.

结论:

  • 这种新型的远红色光探针是一种强大的工具,用于在人体活检中检测阳性细菌,特别是金黄色葡萄球菌.
  • 这种探针显著提高了深层感染中的细菌的可视化.
  • 它有望推动微生物学研究,诊断和了解葡萄球菌感染.