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Production of highly purified no-carrier-added $$^{177}$$Lu for radioimmunotherapy

放射免疫療法のための高純度無担体$$^{177}$$Luの製造法の開発

渡辺 智; 橋本 和幸; 渡辺 茂樹; 飯田 靖彦*; 花岡 宏史*; 遠藤 啓吾*; 石岡 典子

Watanabe, Satoshi; Hashimoto, Kazuyuki; Watanabe, Shigeki; Iida, Yasuhiko*; Hanaoka, Hirofumi*; Endo, Keigo*; Ishioka, Noriko

No-carrier-added $$^{177}$$Lu produced via the $$^{176}$$Yb(n, $$gamma$$) $$^{177}$$Yb $$rightarrow$$$$^{177}$$Lu process was separated from the macroscopic amounts of the Yb target using reversed-phase ion-pair liquid chromatography. To produce a highly purified $$^{177}$$Lu solution capable of labeling antibodies, the metallic impurities were removed using cation, chelating ion, and anion exchange columns. After the elimination of metallic impurities, the concentrations of Ca, Fe, and Zn were reduced from 87, 340, and 77 ppb to 13, 18, and 9 ppb, respectively. Consequently, the labeling yield of the $$^{177}$$Lu -labeled antibody increased from less than 5% to 88%.

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パーセンタイル:43.49

分野:Chemistry, Analytical

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