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Iranian Journal of Nuclear Medicine، جلد ۲۴، شماره ۲، صفحات ۱۰۷-۱۱۴
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عنوان انگلیسی Evaluation of DNA damage in a Her2+ cell line induced by an Auger-emitting immunoconjugate
چکیده انگلیسی مقاله Introduction: Auger electron based radioimmunotherapy (RIT) using 111In-DOTA-trastuzumab (111In-DOTA-antiHer2) feasibility was studied in vitro on a HER2/neu positive cell line, SkBr3. Methods:111In-DOTA-antiHer2 was prepared according to the optimized conditions followed by quality control tests including radiochemical purity; immunoreactivity). SkBr3 as a HER2/neu positive cell line was used to determine the degree of internalization and cell viability of 111In-DOTA-antiHer2. For comet assay freshly cultivated SkBr3 cells incubated with 111In-DOTA-antiHer2 in 3.7 and 7.4 MBq doses at 37ºC for 24h. Results:111In-DOTA-antiHer2 (>95% radiochemical purity; >79% immunoreactivity) demonstrated significant internalization in SKBr3 cells in 24 h. no significant cell viability difference observed for 111In-DOTA-antiHer2 and 111In cation treatments. Comet assay at 3.7 MBq demonstrated no significant DNA damage, while at 7.4 MBq dose DNA damage observed at least 16% more than control In-111 chloride after 24 h. Conclusion: Although the internalization of 111In-DOTA-antiHer2 was approved in this study, however, lack of cell death and slight DNA breakage for 111In-DOTA-antiHer2 treatment suggests absence of nucleus entry which is essential for demonstration of DNA damage according to Auger electron range at cellular level.
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نویسندگان مقاله بهناز پیروزفر |
radiation application research school, nuclear science and technology research institute, tehran, iran

بهروز علیرضاپور |
radiation application research school, nuclear science and technology research institute, tehran, iran

فرحناز معتمدی سده | motamedi sedeh
radiation application research school, nuclear science and technology research institute, tehran, iran

امیررضا جلیلیان | amir reza
radiation application research school, nuclear science and technology research institute, tehran, iran

محمد میرزایی |
radiation application research school, nuclear science and technology research institute, tehran, iran

غلامرضا رییس علی |
radiation application research school, nuclear science and technology research institute, tehran, iran

نشانی اینترنتی http://irjnm.tums.ac.ir/article_20592_42fab57f68ae322f09668f8b4f0fddd0.pdf
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