申请人:NeoRx Corporation
公开号:US04988496A1
公开(公告)日:1991-01-29
The present invention provides metal chelating compounds, to chelates and chelate-targeting agent conjugates formed from the chelating compounds, and to methods for making and using these compositions. The chelating compounds incorporate two nitrogen atoms and three sulfur atoms ("N.sub.2 S.sub.3 "), two nitrogen atoms and four sulfur atoms ("N.sub.2 S.sub.4 "), or three nitrogen atoms and three sulfur atoms ("N.sub.3 S.sub.3 "). Metals, and metal oxides, capable of being chelated by the compounds include those that are radionuclides, such as .sup.99m Tc and .sup.186/188 Re. The targeting agent portion of the chelate-targeting agent conjugates provided includes antibodies, peptides, hormones, enzymes and biological response modifiers. Methods for making the conjugates are provided and encompass the addition of a metal, or metal oxide, to a chelating compound prior to attachment to a targeting agent as well as subsequent to the attachment. Another aspect of the invention provides kits for producing chelate-targeting agent comjugates for radiopharmaceutical use. An additional aspect of the invention provides methods for using the chelate-targeting agent conjugates for diagnostic and therapeutic purposes, such as detection of a target site and delivery of a radionuclide to the site, respectively.
本发明提供了金属螯合化合物,用于形成螯合物和螯合靶向剂偶联物的螯合化合物,以及制备和使用这些组合物的方法。螯合化合物包括两个氮原子和三个硫原子(“N.sub.2S.sub.3”),两个氮原子和四个硫原子(“N.sub.2S.sub.4”)或三个氮原子和三个硫原子(“N.sub.3S.sub.3”)。可以被这些化合物螯合的金属和金属氧化物包括放射性核素,如.sup.99m Tc和.sup.186/188 Re。所提供的螯合靶向剂偶联物的靶向剂部分包括抗体、肽、激素、酶和生物反应修饰剂。提供了制备偶联物的方法,包括在连接到靶向剂之前或之后向螯合化合物中添加金属或金属氧化物。本发明的另一个方面提供了用于制备放射性药物的螯合靶向剂偶联物的套件。本发明的另一个方面提供了使用螯合靶向剂偶联物进行诊断和治疗的方法,例如检测目标位点和将放射性核素输送到位点。