title: Decreased uptake of bodipy-labelled compounds in the presence of the nuclear stain, DRAQ5.
abstract: We have found the nuclear stain DRAQ5 to decrease the cellular uptake of a series of boron dipyrromethane (bodipy)-labelled compounds. This phenomenon is consistent between Lysotracker Green DND 26, Lysotracker Red DND 99 and bodipy-labelled mycolactone. Although DRAQ5 uptake was not prevented, DRAQ5 was in significant excess in each case. As the effect is consistent among two cell types, RAW 264.7 monocyte/macrophages and Bend 3 endothelial cells, we hypothesize that it may be a result of the two dyes complexing in solution into a form that is not taken up by the cells. This hypothesis is confirmed by fluorescence resonance energy transfer analysis in solution.
authors.affiliation: Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA. ssnyder@bcm.tmc.edu
authors.forename: D Scott
authors.initials: DS
authors.lastname: Snyder
authors.forename: C F
authors.initials: CF
authors.lastname: Garon
mesh_terms: D000818:Animals; D001896:Boron Compounds / Q000378:metabolism*; D002460:Cell Line; D002467:Cell Nucleus / Q000378:metabolism; D004727:Endothelium / Q000166:cytology / Q000378:metabolism; D031541:Fluorescence Resonance Energy Transfer; D005456:Fluorescent Dyes / Q000378:metabolism*; D008264:Macrophages / Q000378:metabolism; D051379:Mice; D018613:Microscopy, Confocal; D008856:Microscopy, Fluorescence; D009000:Monocytes / Q000378:metabolism; D013194:Staining and Labeling / Q000379:methods*
chemical_list: C095489:4,4-difluoro-4-bora-3a,4a-diaza-s-indacene; D001896:Boron Compounds; D005456:Fluorescent Dyes