Thiolation of proteins for radionuclide-based radioimmunodetection and
radioimmunotherapy
    61.
    发明授权
    Thiolation of proteins for radionuclide-based radioimmunodetection and radioimmunotherapy 失效
    基于放射性核素的放射免疫检测和放射免疫治疗的蛋白质硫酸化

    公开(公告)号:US6010680A

    公开(公告)日:2000-01-04

    申请号:US106140

    申请日:1998-06-29

    摘要: A method of radiolabeling a protein with a radionuclide including contacting the protein with a protected tertiary thiol-containing bifunctional chelating agent that is capable of reacting with the protein at one end of the agent and is capable of complexing with a radionuclide at the other end of the agent, to form a protein-acetyl-t-thiol-containing conjugate. The protein-acetyl-t-thiol-containing conjugate then is deprotected and admixed with a reducing agent for the radionuclide, where the radionuclide is added in a subsequent step, to form a mixture of reducing agent and protein-t-thiol-containing conjugate. This mixture then is reacted with a radionuclide whereby the radionuclide reacts with pendant sulfhydryl groups present on the protein-t-thiol-containing conjugate. Methods of radioimmunotherapy and diagnostic kits suitable for forming a composition to be administered to a human patient also are disclosed.

    摘要翻译: 一种用放射性核素放射性标记蛋白质的方法,包括使蛋白质与受保护的含叔硫醇的双功能螯合剂接触,所述螯合剂能够在所述试剂的一端与蛋白质反应,并且能够与另一端的放射性核素络合 以形成含有蛋白质 - 乙酰基-t-硫醇的缀合物。 然后将含蛋白质 - 乙酰基-t-硫醇的缀合物脱保护并与用于放射性核素的还原剂混合,其中在随后的步骤中加入放射性核素,以形成还原剂和含蛋白质-T-硫醇的共轭物的混合物 。 然后将该混合物与放射性核素反应,由此放射性核素与存在于蛋白质-T-硫醇的缀合物上的侧链巯基反应。 还公开了放射免疫治疗方法和适合于形成待给予人类患者的组合物的诊断试剂盒。

    Thiolation of peptides for radionuclide-based radiodetection and
radiotherapy
    63.
    发明授权
    Thiolation of peptides for radionuclide-based radiodetection and radiotherapy 失效
    基于放射性核素的放射性检测和放射治疗的肽的硫醇化

    公开(公告)号:US5746996A

    公开(公告)日:1998-05-05

    申请号:US483095

    申请日:1995-06-07

    摘要: A method of radiolabeling a peptide, e.g., somatostatin or an analogue thereof or vasoactive intestinal peptide, with a radioisotope of technetium or rhenium, comprises the steps of: (a) reacting the peptide with an acetyl-protected t-thiol-containing, amine-reactive bifunctional chelating agent; (b) deprotecting the acetyl-t-thiol group to generate a free t-thiol group; and either (c) admixing the peptide-t-thiol-containing conjugate with a stannous salt; and (d) reacting the mixture of step (c) with pertechnetate or perrhenate, or (c') adding reduced pertechnetate or perrhenate to said peptide-t-thiol-containing conjugate, thereby forming a radiolabeled peptide. Kits for effecting the radiolabeling method, and methods of tumor detection/imaging or therapy are provided.

    摘要翻译: 使用锝或铼的放射性同位素将肽例如生长抑素或其类似物或血管活性肠肽放射标记的方法包括以下步骤:(a)使肽与含有乙酰基保护的含硫代硫醇的胺反应 - 反应双功能螯合剂; (b)使乙酰基-t-硫醇基团去保护以产生游离的t-硫醇基团; 并且(c)将含有肽-硫醇的缀合物与亚锡盐混合; 和(d)使步骤(c)的混合物与高锝酸盐或高铼酸盐反应,或(c')向所述含肽-T-硫醇的缀合物加入降低的高锝酸盐或高铼酸盐,从而形成放射性标记的肽。 提供用于实现放射性标记方法的试剂盒,以及肿瘤检测/成像或治疗方法。