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用于放射性砹(碘)标记蛋白质的偶联剂SPC的合成及表征
Synthesis and Characterization of SPC as a Linker for Labeling Proteins With Astatine and Iodine Radioisotopes
【摘要】 以5-溴烟酸为起始物,通过3步主要反应合成了一种适用于蛋白质放射性砹(碘)标记的偶联剂——5-(三正丁基锡)-3-吡啶甲酸 N-琥珀酰亚胺酯(SPC),并用核磁共振(NMR)、质谱(MS)、高效液相色谱(HPLC)等进行了表征。以该试剂为双功能偶联剂,实现了IgG的125I标记,标记率达30%以上。标记产物在体外具有较高的稳定性。
【Abstract】 N-succinimidyl 5--(tributylstannyl)-3-pyridinecarboxylate (SPC), a useful linker forlabeling proteins with astatine and iodine radioisotopes, is synthesized in three steps with 5-bromonicotinic acid as a starting material, and is characterized by nuclear magnetic resonance(NMR), mass spectrometer(MS) and high performance liquid chromatography (HPLC). Withthis bi-functional ester, 125I labeled human IgG is performed in labeling yield of approximately30%. Also, the in vitro stability of the prepared 125I-IgG is evaluated.
【关键词】 偶联剂;
合成;
表征;
211At;
125I;
标记;
【Key words】 linker; synthesis; characterization; 211At; 125I; labeling;
【Key words】 linker; synthesis; characterization; 211At; 125I; labeling;
【基金】 国家自然科学基金(29601104,20171033);高等学校博士学科点专项科研基金(2003610016)
- 【文献出处】 原子能科学技术 ,Atomic Energy Science and Technology , 编辑部邮箱 ,2004年03期
- 【分类号】O625.4
- 【被引频次】4
- 【下载频次】80