Cellular imaging using BODIPY-, pyrene- and phthalocyanine- based conjugates - Université de Bourgogne Accéder directement au contenu
Article Dans Une Revue Bioorganic and Medicinal Chemistry Année : 2018

Cellular imaging using BODIPY-, pyrene- and phthalocyanine- based conjugates


Fluorescent Probes aimed at absorbing in the blue/green region of the spectrum and emitting in the green/red have been synthesized (as the form of dyads-pentads), studied by spectrofluorimetry, and used for cellular imaging. The synthesis of phthalocyanine-pyrene 1 was achieved by cyclotetramerization of pyrenyldicyanobenzene, whereas phthalocyanine-BODIPY 2c was synthesized by Sonogashira coupling between tetraiodophthalocyanine and meso-alkynylBODIPY. The standard four-steps BODIPY synthesis was applied to the BODIPY-pyrene dyad 3 starting from pyrenecarbaldehyde and dimethylpyrrole. H-1, C-13, F-19, (BNMR)-B-11, ICP, MS, and UV/Vis spectroscopic analyses demonstrated that 2c is a mixture of BODIPY-Pc conjugates corresponding to an average ratio of 2.5 BODIPY per Pc unit, where its bis, tris, tetrakis components could not be separated. Fluorescence emission studies (mu M concentration in THF) showed that the design of the probes allowed excitation of their antenna (pyrene, BODIPY) in the blue/green region of the spectrum, and subsequent transfer to the acceptor platform (BODIPY, phthalocyanine) followed by its emission in the green/red (with up to 140-350 nm overall Stokes shifts). The fluorescent probes were used for cellular imaging of B16F10 melanoma cells upon solubilization in 1% DMSO containing RPMI or upon encapsulation in liposomes (injection method). Probes were used at 1-10 mu M concentrations, cells were fixed with methanol and imaged by biphoton and/or confocal microscopy, showing that probes could achieve the staining of cells membranes and not the nucleus.
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Dates et versions

hal-01687238 , version 1 (18-01-2018)



Faustine Bizet, Martin Ipuy, Yann Bernhard, Vivian Lioret, Pascale Winckler, et al.. Cellular imaging using BODIPY-, pyrene- and phthalocyanine- based conjugates. Bioorganic and Medicinal Chemistry, 2018, 26 (2), pp.413 - 420. ⟨10.1016/j.bmc.2017.11.050⟩. ⟨hal-01687238⟩
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