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Journal Articles

Preparation and evaluation of an astatine-211-labeled sigma receptor ligand for $$alpha$$ radionuclide therapy

Ogawa, Kazuma*; Mizuno, Yoshiaki*; Washiyama, Koshin*; Shiba, Kazuhiro*; Takahashi, Naruto*; Kozaka, Takashi*; Watanabe, Shigeki; Shinohara, Atsushi*; Odani, Akira*

Nuclear Medicine and Biology, 42(11), p.875 - 879, 2015/11

 Times Cited Count:18 Percentile:69.85(Radiology, Nuclear Medicine & Medical Imaging)

Journal Articles

Preparation and evaluation of $$^{186/188}$$Re-labeled antibody (A7) for radioimmunotherapy with rhenium(I) tricarbonyl core as a chelate site

Ogawa, Kazuma*; Kawashima, Hidekazu*; Kinuya, Seigo*; Shiba, Kazuhiro*; Onoguchi, Masahisa*; Kimura, Hiroyuki*; Hashimoto, Kazuyuki; Odani, Akira*; Saji, Hideo*

Annals of Nuclear Medicine, 23(10), p.843 - 848, 2009/12

 Times Cited Count:9 Percentile:33.73(Radiology, Nuclear Medicine & Medical Imaging)

Rhenium is one of the most valuable elements for internal radiotherapy because $$^{186/188}$$Re have favorable physical characteristics. However, there are problems when proteins such as antibodies are used as carriers of $$^{186/188}$$Re. Labeling methods require the complicated processes. Therefore, we planned the preparation by a simple method and evaluation of a stable $$^{186/188}$$Re-labeled antibody. For this purpose, we selected $$^{186/188}$$Re(I) tricarbonyl complex as a chelating site. A7 was used as a model protein. $$^{186/188}$$Re-labeled A7 was prepared by directly reacting a $$^{186/188}$$Re(I) tricarbonyl precursor with A7. $$^{186/188}$$Re-(CO)$$_{3}$$-A7 were prepared with radiochemical yields of 23-28%. After purification, $$^{186/188}$$Re-(CO)$$_{3}$$-A7 showed a radiochemical purity of over 95%. In biodistribution experiments, $$^{186/188}$$Re-labeled A7 showed high uptakes in the tumor.

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