title: [Ligands with affinity to specific sequence of DNA base pairs. XII. The synthesis and cytological studies of dimeric Hoechst 33258 molecules].
abstract: We synthesized dimeric Hoechst dye molecules composed of two moieties of the Hoechst 33258 fluorescent dye phenolic hydroxy groups of which were tethered via pentamethylene, heptamethylene, or triethylene oxide linkers. A characteristic pattern of differential staining of chromosome preparations from human premonocytic leukemia HL60 cells was observed for all the three fluorescent dyes. The most contrast pattern was obtained for the bis-Hoechst analogue with the heptamethylene linker; its quality was comparable with the picture obtained in the case of chromosome staining with 4',6-diamidino-2-phenylindole. The ability to penetrate into the live human fibroblasts was studied for the three bis-Hoechst compounds. The fluorescence intensity of nuclei of live and fixed cells stained with the penta- and heptamethylene-linked bis-Hoechst analogues was found to differ only slightly, whereas the fluorescence of the nuclei of live cells stained with triethylene oxide-linked bis-Hoechst was considerably weaker than that of the fixed cells. The bis-Hoechst molecules are new promising fluorescent dyes that can both differentially stain chromosome preparations and penetrate through cell and nuclear membranes and effectively stain cell nuclei.
authors.forename: A V
authors.initials: AV
authors.lastname: Gromyko
authors.forename: K V
authors.initials: KV
authors.lastname: Popov
authors.forename: A P
authors.initials: AP
authors.lastname: Mozoleva
authors.forename: S A
authors.initials: SA
authors.lastname: Strel'tsov
authors.forename: S L
authors.initials: SL
authors.lastname: Grokhovskiĭ
authors.forename: V A
authors.initials: VA
authors.lastname: Oleĭnikov
authors.forename: A L
authors.initials: AL
authors.lastname: Zhuze
mesh_terms: D020029:Base Pairing; D001665:Binding Sites; D006690:Bisbenzimidazole / Q000138:chemical synthesis* / Q000737:chemistry; D002877:Chromosomes, Human / Q000648:ultrastructure; D004247:DNA / Q000737:chemistry*; D005347:Fibroblasts / Q000378:metabolism / Q000648:ultrastructure; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D018922:HL-60 Cells; D006801:Humans; D008024:Ligands
chemical_list: D005456:Fluorescent Dyes; D008024:Ligands; D004247:DNA; D006690:Bisbenzimidazole