A composition comprising a polypeptide and an active agent covalently attached to the polypeptide. Also provided is a method for delivery of an active agent to a patient comprising administering to the patient a composition comprising a polypeptide and an active agent covalently attached to the polypeptide. Also provided is a method for protecting an active agent from degradation comprising covalently attaching the active agent to a polypeptide. Also provided is a method for controlling release of an active agent from a composition comprising covalently attaching the active agent to the polypeptide.
                            一种由
多肽和与
多肽共价连接的活性剂组成的组合物。还提供了一种向患者施用活性剂的方法,包括向患者施用一种组合物,该组合物包括
多肽和与
多肽共价连接的活性剂。还提供了一种保护活性剂不降解的方法,包括将活性剂共价连接到
多肽上。还提供了一种控制活性剂从组合物中释放的方法,包括将活性剂共价连接到
多肽上。