8 research outputs found

    Overlaid UPLC-MS/MS SRM chromatograms of 1000 ppb mixed polyamines standard (0–10 mins being shown).

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    <p>Put (Black peak, t<sub>R</sub> = 4.3 min), Put-d<sub>8</sub> (Pink peak, t<sub>R</sub> = 4.3 min), Spd (Blue peak, t<sub>R</sub> = 6.6 min), Spd-d<sub>8</sub> (Red peak, t<sub>R</sub> = 6.6 min), Spm (Yellow peak, t<sub>R</sub> = 7.9 min) and Spm-d<sub>8</sub> (Green peak, t<sub>R</sub> = 7.9 min).</p

    Comparative Studies of the Cellular Uptake, Subcellular Localization, and Cytotoxic and Phototoxic Antitumor Properties of Ruthenium(II)–Porphyrin Conjugates with Different Linkers

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    Six water-soluble free-base porphyrin-Ru­(II) conjugates, <b>1</b>–<b>3</b>, and Zn­(II) porphyrin-Ru­(II) conjugates, <b>4</b>–<b>6</b>, with different linkers between the hydrophobic porphyrin moiety and the hydrophilic Ru­(II)-polypyridyl complex, have been synthesized. The linear and two-photon-induced photophysical properties of these conjugates were measured and evaluated for their potential application as dual in vitro imaging and photodynamic therapeutic (PDT) agents. Conjugates <b>1</b>–<b>3</b>, with their high luminescence and singlet oxygen quantum yields, were selected for further study of their cellular uptake, subcellular localization, and cytotoxic and photocytotoxic (under linear and two-photon excitation) properties using HeLa cells. Conjugate <b>2</b>, with its hydrophobic phenylethynyl linker, was shown to be highly promising for further development as a bifunctional probe for two-photon (NIR) induced PDT and in vitro imaging. Cellular uptake and subcellular localization properties were shown to be crucial to its PDT efficacy

    Gallium and Functionalized-Porphyrins Combine to Form Potential Lysosome-Specific Multimodal Bioprobes

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    A water-soluble bimetallic normal (“cold”) and radiochemical (“hot”) gallium–porphyrin–ruthenium–bipyridine complex (<b>GaporRu-1</b>) has been synthesized by microwave methodology in short reaction times with good (>85%) yields. <sup><b>68</b></sup><b>GaporRu-1</b> is demonstrated to be a potential multimodal and functional bioprobe for positron emission tomography (PET), lysosome specific optical imaging, and photodynamic therapy
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