Easy Employment and Crosstalk-Free Detection of Seven Fluorophores in a Widefield Fluorescence Microscope
1
Department of Pathobiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
2
X-Zell Biotec, Bangkok 10400, Thailand
*
Author to whom correspondence should be addressed.
Methods Protoc. 2018, 1(2), 20; https://doi.org/10.3390/mps1020020
Received: 25 April 2018
/
Revised: 26 May 2018
/
Accepted: 30 May 2018
/
Published: 1 June 2018
Immunofluorescence staining has become an essential tool in pathology and biomedical sciences to identify rare cells, cell–cell interactions, and submicroscopic cellular components. Many experimental settings, however, suffer from the fact that traditional widefield fluorescence microscopy is usually restricted to imaging three or four fluorophores only. Due to a lack of morphological information and a high detection limit, even flow cytometry—which is capable of staining 20 or more fluorophores at the same time—is limited in its applicability, especially in areas such as rare cell detection. Other advanced imaging approaches, such as confocal laser scanning microscopy and imaging flow cytometry, may be addressing these shortcomings, but in turn require sophisticated downstream data processing and high capital outlay. Here, we describe a new method and filter set-up to routinely employ up to seven fluorophores on a traditional widefield fluorescence microscope equipped with a standard high-pressure mercury light source. Quantification of crosstalk between channels and actual seven-color imaging of cancer cells spiked into leukocytes demonstrate that there is no need for digital compensation correction algorithms. Our set-up thus permits a detailed analysis of rare cell populations, co-localization of antigens, and cell morphology in a standard research or routine laboratory setting.
View Full-Text
Keywords:
seven-color immunostaining; rare cell analysis; fluorescence microscopy; immunopathology; slide-based cytometry
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Bhakdi, S.C.; Thaicharoen, P. Easy Employment and Crosstalk-Free Detection of Seven Fluorophores in a Widefield Fluorescence Microscope. Methods Protoc. 2018, 1, 20. https://doi.org/10.3390/mps1020020
AMA Style
Bhakdi SC, Thaicharoen P. Easy Employment and Crosstalk-Free Detection of Seven Fluorophores in a Widefield Fluorescence Microscope. Methods and Protocols. 2018; 1(2):20. https://doi.org/10.3390/mps1020020
Chicago/Turabian StyleBhakdi, Sebastian C., and Ponpan Thaicharoen. 2018. "Easy Employment and Crosstalk-Free Detection of Seven Fluorophores in a Widefield Fluorescence Microscope" Methods and Protocols 1, no. 2: 20. https://doi.org/10.3390/mps1020020
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
