时间缩短的光显微镜 影像绘制的伪菌和黄金葡萄球菌 异质的现象型
Patricia J Hare1, Jonathan I Batchelder2, Travis J LaGree2
1Department of Molecular Biology & Biophysics, UConn Health; School of Dental Medicine, UConn Health.
Journal of visualized experiments : JoVE
|March 3, 2025
概括
这项研究提出了一种新的时隔成像方法,用于追踪Pseudomonas aeruginosa和Staphylococcus aureus中的抗生素持久细胞. 这种方法允许在抗生素治疗期间详细观察单个细菌细胞的存活和复活.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 抗生素持久性使得很小一部分易受细菌能够在抗生素治疗中存活下来,从而导致治疗失败.
- 使用时差光显微镜进行的单细胞研究已经对大肠杆菌中持续存在的细胞有了更深入的了解.
- 使用类似的高分辨率方法研究其他关键病原体中的持久细胞是有限的.
研究的目的:
- 开发和验证一种可适应的时隔成像方法,用于研究 Pseudomonas aeruginosa 和 Staphylococcus aureus 中的抗生素持久细胞.
- 为了能够在单细胞水平上详细观察个体细菌细胞对抗生素的反应.
- 为研究临床相关病原体的持续细胞形成,存活和复苏机制提供资源.
主要方法:
- 对 Pseudomonas aeruginosa 和 Staphylococcus aureus 的时间间隔光显微镜技术的调整.
- 引入光记者 (转录和翻译) 和染料来标记细胞特征.
- 在抗生素治疗期间和之后观察和跟踪单个细菌细胞表型,形态和基因表达.
主要成果:
- 时间延迟成像的成功实施,用于观察抗生素持久性细胞在两种克拉姆阴性 (P. aeruginosa) 和克拉姆阳性 (S. aureus) 细菌.
- 在抗生素暴露后,详细追踪个体的持续性细胞复苏和表型变化.
- 展示单细胞成像对理解超出人口水平测试的持续性细胞动态的有用性.
结论:
- 开发的可适应成像方法促进了对关键临床病原体的抗生素持久细胞的高分辨率研究.
- 这种方法提供了对单个持久细胞的生存和恢复机制的关键见解.
- 这项工作是推动抗生素耐药性和治疗策略研究的宝贵资源.
相关概念视频
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:25Overview of Electron Microscopy
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01:20Immunogold Electron Microscopy
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01:29Two-Dimensional Microscopy in Microbiology
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01:28Three-Dimensional Microscopy in Microbiology
Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
01:13Special Staining Techniques
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