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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Preparation of [In-111]-labeled-DTPA-bombesin conjugates at high specific activity and stability: Evaluation of labeling parameters and potential stabilizers
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Preparation of [In-111]-labeled-DTPA-bombesin conjugates at high specific activity and stability: Evaluation of labeling parameters and potential stabilizers

机译:高比活度和稳定性制备[In-111]-标记的DTPA-bombesin偶联物:评估标记参数和潜在的稳定剂

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摘要

The aim of the present work was to obtain stabilized high specific activity (HSA) 111In-labeled bombesin conjugates for preclinical evaluations. Parameters influencing the kinetics of labeling were investigated and the effect of stabilizers on HSA radiopeptides stability at room temperature were systematically categorized applying chromatography techniques. A SA of 174GBq/μmol was achieved with high radiochemical purity, but the labeled compounds exhibited low stability. The addition of stabilizers avoided their radiolysis and significantly increased their stability.
机译:本工作的目的是获得稳定的高比活(HSA)111In标记的蛙皮素结合物,用于临床前评估。研究了影响标记动力学的参数,并使用色谱技术系统地将稳定剂对室温下HSA放射肽稳定性的影响进行了分类。放射化学纯度很高,SA值为174GBq /μmol,但标记的化合物显示出较低的稳定性。添加稳定剂避免了它们的辐射分解,并显着提高了其稳定性。

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