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    • 7. 发明授权
    • Methods and compositions for increasing the target-specific toxicity of a chemotherapy drug
    • 用于增加化疗药物的靶标特异性毒性的方法和组合物
    • US06361774B1
    • 2002-03-26
    • US09399221
    • 1999-09-17
    • Gary L. GriffithsHans J. Hansen
    • Gary L. GriffithsHans J. Hansen
    • A61K39395
    • B82Y5/00A61K47/6815A61K47/6863A61K47/6867A61K47/6879A61K47/6895A61K47/6899
    • A method for increasing the target-specific toxicity of a drug is effected by pretargeting an enzyme to a mammalian target site, and then administering a cytotoxic drug known to act at the target site or a prodrug form thereof which is converted to the drug in situ, which drug is also detoxified to form an intermediate of lower toxicity using said mammal's ordinary metabolic processes, whereby the detoxified intermediate is reconverted to its more toxic form by the pretargeted enzyme and thus has enhanced cytotoxicity at the target site. Further enhancement can be achieved by pretargeting an enzyme which converts the prodrug to the cytotoxic drug at the target site. Kits for use with the method also are provided. The method and kits permit lower doses of cytotoxic agents, maximize target site activity and minimize systemic side effects.
    • 通过将酶靶向到哺乳动物靶位点,然后施用已知在靶位点起作用的细胞毒性药物或其前体药物形式,将其转化为药物来实现增加药物的靶特异性毒性的方法 ,使用所述哺乳动物的普通代谢过程,该药物也被解毒以形成毒性较低的中间体,由此解毒中间体被预靶向的酶再转化为其更有毒的形式,因此在靶位点具有增强的细胞毒性。 可以通过预靶向在靶位点将前药转化为细胞毒性药物的酶来实现进一步增强。 还提供了与该方法一起使用的套件。 该方法和试剂盒允许较低剂量的细胞毒剂,最大限度地提高目标部位活性并最大程度减少全身副作用。
    • 8. 发明授权
    • Detection and therapy of lesions with biotin/avidin-metal chelating
protein conjugates
    • 用生物素/抗生物素蛋白金属螯合蛋白缀合物检测和治疗病变
    • US5922302A
    • 1999-07-13
    • US440652
    • 1995-05-15
    • David Milton GoldenbergGary L. GriffithsHans J. Hansen
    • David Milton GoldenbergGary L. GriffithsHans J. Hansen
    • A61K38/00A61K38/16A61K38/22A61K38/27A61K38/43A61K39/44A61K45/00A61K47/48A61K49/00A61K51/00A61K51/10A61P9/00A61P17/00A61P29/00A61P35/00A61P35/02C07K16/00
    • B82Y5/00A61K47/48353A61K47/48753A61K51/1093A61K2121/00A61K2123/00
    • Improved methods of detecting and/or treating lesions in a patient are provided. The improved methods comprise the steps of (a) parenterally injecting a subject with a targeting composition comprised of a conjugate of biotin and targeting protein or of an avidin and targeting protein, wherein the targeting protein preferentially binds to a marker substance produced or associated with the targeted lesion, and allowing the targeting protein conjugate to preferentially accrete at the targeted lesion; (b) then parenterally injecting a clearing composition comprised of (i) avidin, when the targeting composition is a biotin-targeting protein conjugate, or (ii) biotin, when the targeting composition is a avidin-targeting protein conjugate, and allowing the clearing composition to substantially clear the targeting composition from non-targeted sites and to bind to the targeting composition accreted at the targeted lesion; (c) parenterally injecting a localization agent which may be the same or different form the clearing agent; (d) parenterally injecting a detection or therapeutic composition comprised of a conjugate of (i) avidin and naturally occurring metal-ion chelating protein chelated with chelatable metal detection or therapeutic agent when the clearing composition is biotin, or (ii) biotin and naturally occurring metal-ion carry protein chelated with chelatable a metal detection or therapeutic agent when the clearing agent is avidin, and allowing the composition to accrete at the targeted lesion. The improvement is that the use of the chelating protein to chelate a chelatable metal therapeutic or detection agent amplifies the amount of detection or therapeutic agent at the targeted site.
    • 提供改进的检测和/或治疗患者病变的方法。 改进的方法包括以下步骤:(a)用由生物素和靶向蛋白质的缀合物或抗生物素蛋白和靶向蛋白质的缀合物组成的靶向组合物肠胃外注射受试者,其中所述靶向蛋白质优先结合生成或与之相关的标记物质 靶向性损伤,并允许靶向蛋白质缀合物优先在目标病变处分泌; (b)然后当靶向组合物为抗生物素蛋白靶向蛋白质缀合物时,肠胃外注射由(i)抗生物素蛋白组成的清除组合物,当靶向组合物为生物素靶向蛋白质缀合物或(ii)生物素时, 组合物以从非靶位点基本上清除靶向组合物,并结合靶向组合物,其靶向病变呈现; (c)肠胃外注射定位剂,所述定位剂可以相同或不同,形成清除剂; (d)当清除组合物为生物素时,肠胃外注射由(i)抗生物素蛋白和螯合螯合金属螯合蛋白和天然存在的金属离子螯合蛋白的缀合物组成的检测或治疗组合物,或(ii)生物素和天然存在的 当清除剂为抗生物素蛋白时,金属离子携带蛋白质与可螯合的金属检测或治疗剂螯合,并允许组合物在靶向病变处进入。 改进之处在于使用螯合蛋白螯合螯合金属治疗剂或检测剂可以扩增目标部位的检测量或治疗剂量。
    • 9. 发明授权
    • Methods for technetium/rhenium labeling of proteins
    • 蛋白质锝/铼标记方法
    • US5328679A
    • 1994-07-12
    • US760466
    • 1991-09-17
    • Hans J. HansenGary L. GriffithsAnastasia Lentine-Jones
    • Hans J. HansenGary L. GriffithsAnastasia Lentine-Jones
    • A61K51/10A61K51/12A61K49/02A61K39/395A61K43/00C07K15/28
    • A61K51/1048A61K51/10A61K51/1282A61K2123/00
    • A method for radiolabeling a protein with a radioisotope of technetium or rhenium is disclosed which comprises the steps of contacting a solution of a protein containing a plurality of adjacent free sulfhydryl groups, or in particular cases, intact protein containing at least one disulfide group, with stannous ions, and then with radiopertechnetate or radioperrhenate, the amount of stannous ion being sufficient to substantially completely reduce the radiopertechnetate or radioperrhenate, and recovering radiolabeled protein.A rapid and quantitative method for producing a sterile, injectable solution of Tc-99m-labeled monovalent antibody fragment is also disclosed which comprises the step of mixing a sterile solution containing a monovalent antibody fragment having at least one free sulfhydryl group, stannous chloride and excess tartrate, at mildly acidic pH, or a sucrose-stabilized lyophilizate of such solution, with a sterile solution of Tc-99m-pertechnetate, whereby substantially quantitative labeling of the antibody fragment with Tc-99m is effected in about 5 minutes at ambient temperature, the resultant sterile solution of Tc-99m-labeled monovalent antibody fragment being suitable for immediate injection into a patient for scintigraphic imaging.
    • 公开了用锝或铼的放射性同位素放射性标记蛋白质的方法,其包括将含有多个相邻游离巯基的蛋白质溶液或特别是含有至少一个二硫基的完整蛋白质溶液与 亚锡离子,然后用锝铁或无铼酸盐,亚锡离子的量足以基本上完​​全降低玄武岩或无纶珍珠岩,并回收放射性标记的蛋白质。 还公开了用于生产Tc-99m标记的单价抗体片段的无菌注射溶液的快速和定量的方法,其包括将含有至少一个游离巯基,氯化亚锡和过量的一价抗体片段的无菌溶液混合的步骤 用温和酸性pH的酒石酸盐或这种溶液的蔗糖稳定的冻干物,用Tc-99m-高锝酸盐的无菌溶液,由此在约5分钟内在环境温度下对Tc-99m的抗体片段进行基本上定量的标记, 所得到的Tc-99m标记的单价抗体片段的无菌溶液适于立即注射到患者中用于闪烁照相成像。