کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
29848 | 44444 | 2014 | 6 صفحه PDF | دانلود رایگان |
• We present a cuvette holder for the front-face fluorometry of pelleted cell layers.
• Supernatant-free fluorescence spectra of cells in suspension were measured.
• Yeast cells stained with calcofluor and 3,3′-dipropylthiadicarbocyanine were used.
• The presented method is also suitable for any other cell type and fluorescent dye.
Here we present a fluorometric method for direct determination of supernatant-free fluorescence spectra generated from fluorescently stained cells in suspension. The key element in the new technique is the design of an adapter to a standard cuvette holder that makes it possible to measure front-face fluorescence spectra from thin layers of cells spun down to the bottom of a spectrofluorometric cuvette. We have demonstrated the applicability of this approach and its analytical potential using the suspensions of yeast cells stained with the potentiometric dye of 3,3’-dipropylthiadicarbocyanine, diS-C3(3), and with the specific cell-wall marker calcofluor.
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Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 141, December 2014, Pages 139–144