Chemical method for selective modification of the N-  and/or C-terminal
amino acid .alpha.-carbon reactive group of a recombinant polypeptide
or a portion thereof
    1.
    发明授权
    Chemical method for selective modification of the N- and/or C-terminal amino acid .alpha.-carbon reactive group of a recombinant polypeptide or a portion thereof 失效
    用于选择性修饰重组多肽或其部分的N-和/或C-末端氨基酸α-碳反应性基团的化学方法

    公开(公告)号:US5656456A

    公开(公告)日:1997-08-12

    申请号:US457166

    申请日:1995-06-01

    摘要: The invention provides for a chemical method for preparing a recombinant single copy polypeptide or a portion thereof with a modified terminal amino acid .alpha.-carbon reactive group selected from the group consisting of N-terminal .alpha.-amine, C-terminal .alpha.-carboxyl, and a combination thereof. The steps of the method involve forming the recombinant single copy polypeptide or a portion thereof so that the single copy polypeptide is protected with one or more biologically added protecting groups at the N-terminal .alpha.-amine, C-terminal .alpha.-carboxyl. The recombinant single copy polypeptide can then be reacted with up to three chemical protecting agents to selectively protect reactive side chain groups and thereby prevent side chain groups from being modified. The recombinant single copy polypeptide can be cleaved with at least one cleavage reagent specific for the biological protecting group to form an unprotected terminal amino acid .alpha.-carbon reactive group. The unprotected terminal amino acid .alpha.-carbon reactive group is modified with at least one chemical modifying agent. The side chain protected terminally modified single copy polypeptide is then deprotected at the side chain groups to form a terminally modified recombinant single copy polypeptide. The number and sequence of steps in the method can be varied to achieve selective modification at the N- and/or C-terminal amino acid of a recombinantly produced polypeptide.

    摘要翻译: 本发明提供了一种用于制备重组单拷贝多肽或其部分的化学方法,其具有修饰的末端氨基酸α-碳反应性基团,其选自N-末端α-胺,C-末端α-羧基和 其组合。 该方法的步骤包括形成重组单拷贝多肽或其部分,使得单拷贝多肽在N-末端α-胺C-末端α-羧基上用一个或多个生物学添加的保护基进行保护。 然后可将重组单拷贝多肽与多达三种化学保护剂反应,以选择性保护反应性侧链基团,从而防止侧链基团被修饰。 重组单拷贝多肽可以用至少一种对生物保护基特异性的切割试剂进行切割以形成未保护的末端氨基酸α-碳反应性基团。 未保护的末端氨基酸α-碳反应性基团用至少一种化学改性剂进行改性。 然后将侧链保护的末端修饰的单拷贝多肽在侧链基团脱保护以形成末端修饰的重组单拷贝多肽。 可以改变方法中的步骤数目和顺序,以实现重组产生的多肽的N-和/或C-末端氨基酸的选择性修饰。

    Chemical method for selective modification of the N- and/or C-terminal
amino acid .alpha.-carbon reactive group of a recombinant polypeptide
or a portion thereof
    2.
    发明授权
    Chemical method for selective modification of the N- and/or C-terminal amino acid .alpha.-carbon reactive group of a recombinant polypeptide or a portion thereof 失效
    用于选择性修饰重组多肽或其部分的N-和/或C-末端氨基酸α-碳反应性基团的化学方法

    公开(公告)号:US5635371A

    公开(公告)日:1997-06-03

    申请号:US294434

    申请日:1994-08-23

    摘要: The invention provides for a chemical method for preparing a recombinant single copy polypeptide or a portion thereof with a modified terminal amino acid .alpha.-carbon reactive group selected from the group consisting of N-terminal .alpha.-amine, C-terminal .alpha.-carboxyl, and a combination thereof. The steps of the method involve forming the recombinant single copy polypeptide or a portion thereof so that the single copy polypeptide is protected with one or more biologically added protecting groups at the N-terminal .alpha.-amine, C-terminal .alpha.-carboxyl. The recombinant single copy polypeptide can then be reacted with up to three chemical protecting agents to selectively protect reactive side chain groups and thereby prevent side chain groups from being modified. The recombinant single copy polypeptide can be cleaved with at least one cleavage reagent specific for the biological protecting group to form an unprotected terminal amino acid .alpha.-carbon reactive group. The unprotected terminal amino acid .alpha.-carbon reactive group is modified with at least one chemical modifying agent. The side chain protected terminally modified single copy polypeptide is then deprotected at the side chain groups to form a terminally modified recombinant single copy polypeptide. The number and sequence of steps in the method can be varied to achieve selective modification at the N- and/or C-terminal amino acid of a recombinantly produced polypeptide.

    摘要翻译: 本发明提供了一种用于制备重组单拷贝多肽或其部分的化学方法,其具有修饰的末端氨基酸α-碳反应性基团,其选自N-末端α-胺,C-末端α-羧基和 其组合。 该方法的步骤包括形成重组单拷贝多肽或其部分,使得单拷贝多肽在N-末端α-胺C-末端α-羧基上用一个或多个生物学添加的保护基进行保护。 然后可将重组单拷贝多肽与多达三种化学保护剂反应,以选择性保护反应性侧链基团,从而防止侧链基团被修饰。 重组单拷贝多肽可以用至少一种对生物保护基特异性的切割试剂进行切割以形成未保护的末端氨基酸α-碳反应性基团。 未保护的末端氨基酸α-碳反应性基团用至少一种化学改性剂进行改性。 然后将侧链保护的末端修饰的单拷贝多肽在侧链基团脱保护以形成末端修饰的重组单拷贝多肽。 可以改变方法中的步骤数目和顺序,以实现重组产生的多肽的N-和/或C-末端氨基酸的选择性修饰。

    Method and treatment composition for decreasing patient time in
catabolic state after traumatic injury
    8.
    发明授权
    Method and treatment composition for decreasing patient time in catabolic state after traumatic injury 失效
    创伤性损伤后分解代谢状态患者时间减少的方法和治疗组合物

    公开(公告)号:US5700775A

    公开(公告)日:1997-12-23

    申请号:US410353

    申请日:1995-03-24

    IPC分类号: A61K38/25 A61K38/27 A61K37/00

    CPC分类号: A61K38/25

    摘要: A method of decreasing patient time in a catabolic state after a traumatic injury. The patient is administered systemically human growth hormone releasing factor or a biologically active analog of human growth hormone releasing factor. Administration in the case of voluntary traumatic injury such as surgery occurs just prior to commencing the surgery and thereafter continuing until recovery. In this way the time in a catabolic state is significantly decreased, and the patient moves more quickly to desired anabolic state necessary for recovery.

    摘要翻译: 创伤性损伤后分解代谢状态下患者时间缩短的方法。 患者被系统地施用人生长激素释放因子或人生长激素释放因子的生物活性类似物。 在自愿创伤性损伤(例如外科手术)的情况下,在开始手术之前进行管理,此后继续进行恢复。 以这种方式,分解代谢状态的时间显着降低,并且患者更快地移动到恢复所需的期望的合成代谢状态。