胶体金
共焦
显微镜
生物物理学
克鲁兹锥虫
共焦显微镜
内吞作用
转铁蛋白
内吞循环
化学
转铁蛋白受体
细胞生物学
材料科学
纳米技术
纳米颗粒
生物
生物化学
光学
细胞
寄生虫寄主
物理
万维网
计算机科学
作者
Iriane Eger,Maurílio J. Soares
标识
DOI:10.1016/j.mimet.2012.07.013
摘要
Here we describe the visualization by confocal microscopy of ingested gold (15 nm)-labeled transferrin in epimastigote forms of the protozoan Trypanosoma cruzi. Intracellular gold labeling was evident at two sites, which represent the bottom of the cytopharynx and the reservosomes. The gold tracer was best observed by confocal microscopy by using the 633 nm excitation wavelength. Intracellular gold clusters larger than 60 nm could be visualized by either gold reflection (light scattering) or photoluminescence modes. The gold reflection mode, the gold photoluminescence mode and the anti-transferrin immunofluorescence image of gold-labeled transferrin showed co-localization, thus demonstrating that the gold visualization modes did not represent artifacts or mislocalization of the biomarker. Visualization of protein–gold nanoparticle complexes by confocal microscopy thus emerges as a promising imaging tool to explore the endocytic pathway in trypanosomes and other cell types, as well as to perform immunolocalization studies using gold-labeled secondary antibodies.
科研通智能强力驱动
Strongly Powered by AbleSci AI