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    • 3. 发明申请
    • Method of screening groups of radioactive molecules and applications thereof
    • 筛选放射性分子组的方法及其应用
    • US20060228296A1
    • 2006-10-12
    • US10514562
    • 2003-05-28
    • Vincent DiveAndre MenezReto StocklinBertrand TavitianFabrice BeauBertrand CzarnyJoel Cotton
    • Vincent DiveAndre MenezReto StocklinBertrand TavitianFabrice BeauBertrand CzarnyJoel Cotton
    • A61K51/00C40B30/06
    • C07K5/1027G01N33/5082
    • The invention relates to an amplification-free method of screening groups of radioactive molecules, the products from the molecule groups obtained and the application thereof in order to identify molecules that are capable of binding selectively to a tissue or a particular organ. The inventive method can be used for the development of novel therapeutic compounds and contrast agents for medical imaging and for the screening of medicaments. Said method of screening a group of molecules is characterised in that it comprises at least the following steps: (1) the group of molecules is administered to at least one animal, each molecule being marked first by a suitable radioactive isotope; (2) at least one of the animals is slaughtered and the tissue distribution of the radioactivity of the molecules administered is analysed from sections of tissue or organs taken using suitable imaging devices; (3) sections of tissue or organs in which a radioactivity signal is detected are selected; (4) radioactive fractions from the aforementioned sections of tissue or organs selected during step 3 are isolated using suitable techniques such as chromatography and/or extraction techniques; and (5) the molecule(s) from the radioactive fractions obtained in step 4 are characterised using suitable analysis techniques such as chromatography and/or mass spectrometry. According to one variation of the method, in step 2, where possible, the tissue distribution of the radioactivity of the molecules administered is analysed in vivo using suitable imaging devices from a biological sample which is pre-extracted and selected from the group containing cells and sections of tissue or organs. As a result, said variation does not require the animal to be slaughtered.
    • 本发明涉及一种无扩增方法,用于筛选放射性分子组,所获得的分子组的产物及其应用,以鉴定能够选择性结合组织或特定器官的分子。 本发明的方法可用于开发用于医学成像和药物筛选的新型治疗化合物和造影剂。 筛选一组分子的所述方法的特征在于其至少包括以下步骤:(1)向至少一种动物施用分子组,每个分子首先由合适的放射性同位素标记; (2)屠宰至少一只动物,并从使用合适的成像装置取出的组织或器官的部分分析施用的分子的放射性的组织分布; (3)选择检测放射性信号的组织或器官的部分; (4)使用合适的技术如色谱和/或提取技术分离来自步骤3中选择的组织或器官的前述部分的放射性级分; 和(5)来自步骤4中获得的放射性级分的分子使用合适的分析技术如色谱和/或质谱鉴定。 根据该方法的一个变体,在步骤2中,在可能的情况下,使用来自生物样品的合适的成像装置在体内分析施用的分子的放射性的组织分布,所述生物样品被预先提取并选自含有细胞的组和 组织或器官的部分。 因此,所述变体不需要屠宰动物。