Improvement in the properties of 3-phenyl-3-trifluoromethyldiazirine based photoreactive bis-glucose probes for GLUT4 following substitution on the phenyl ring |
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Authors: | Hashimoto Makoto Yang Jing Hatanaka Yasumaru Sadakane Yutaka Nakagomi Kazuya Holman Geoffrey David |
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Institution: | Department of Biology and Biochemistry, University of Bath, UK. hasimoto@obihiro.ac.jp |
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Abstract: | We have developed two novel 3-phenyl-3-trifluoromethyldiazirinyl bis-glucose derivatives to investigate the properties of the adipocyte glucose transporter GLUT4. These compounds were substituted by electron-withdrawing (iodo and nitro) groups on the aromatic ring of 3-phenyl-3-trifluoromethyldiazirine photophore and were found to be more photosensitive than compounds without such substituents. The compounds were used as inhibitors of insulin-stimulated glucose transport activity in order to assess half-maximal inhibition or relative affinity values for GLUT4. The affinities were found to be 60-130 times higher than the parent compound D-glucose. Because of the increased photo-reactivity and high affinity these compounds will be useful in studies directed at further elucidation of GLUT4 function. |
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