Imaging Analysis of Biological Trace Elements

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  • Hagimori Masayori
    Department of Biophysical Chemistry, Kobe Pharmaceutical University
  • Saji Hideo
    Department of Patho-functional Bioanalysis, Graduate School of Pharmaceutical Sciences, Kyoto University

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  • イメージングによる生体内微量元素の分析
  • イメージング ニ ヨル セイタイナイ ビリョウ ゲンソ ノ ブンセキ

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Imaging measurement methods are powerful tools to visualize the distribution and function of trace elements in living systems. A number of trace element imaging studies by radioisotopes and fluorescent probes have contributed to understand their essential roles. Recently, to investigate physiological roles of intrinsic trace elements, many efforts have been made to develop element-selective fluorescent probes such as Ca2+, Mg2+, Cu2+, etc. Zinc is also known to play important roles in biological processes. Although a variety of Zn2+-selective fluorescent probes has been developed, most of them presented so far possess a fluorescent core and a separate part for binding to Zn2+ within the molecule, so that the molecular weight is usually large and the molecules are hydrophobic. As a result, the applications of such molecules often face difficulties due to their low solubility in aqueous media. Thus, we developed lowmolecular-weight Zn2+ fluorescent probes based on a bipyridine scaffold to detect the Zn2+ levels in cellular systems.

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