申请人:Biocompatibles UK Limited
公开号:EP1972349A1
公开(公告)日:2008-09-24
The present invention provides fusion peptides having GLP-1 activity and enhanced stability in vivo, in particular resistancy to dipeptidyl peptidase IV conjugated to polymers, thereby forming conjugate molecules. The fusion peptide of the conjugate molecule comprises as component (I) N-terminally a GLP-1(7-35, 7-36 or 7-37) sequence and as component (II) Gterminally a peptide sequence of at least 9 amino acids or a functional fragment, variant or derivative thereof. A synthetic polymer and/or a protein, e.g transferrin or albumin, is covalently or non-covalently bound to the fusion peptide to form the conjugate molecule. Component (II) is preferably a full or partial version of IP2 (intervening peptide 2). A preferred embodiment comprises the sequence GLP-1(7-35, 36 or 37)/IP2/GLP-1(7-35, 36 or 37) or GLP-2 and a polymeric component, e.g. a natural or non-natural polymer. The fusion peptide may be produced in engineered cells or synthetically and is e.g. conjugated to the polymeric component by chemical synthesis. The conjugate molecule may be used for the preparation of a medicament for treating various diseases or disorders, e.g. diabetes type 1 or 2, apoptosis related diseases or neurodegenerative disorders.
本发明提供的融合肽具有 GLP-1 活性和更强的体内稳定性,特别是对二肽基肽酶 IV 的抗性,与聚合物共轭,从而形成共轭分子。共轭分子的融合肽包括作为组分(I)的 N 端 GLP-1(7-35、7-36 或 7-37)序列和作为组分(II)的 G 端至少 9 个氨基酸的肽序列或其功能片段、变体或衍生物。合成聚合物和/或蛋白质(如转铁蛋白或白蛋白)与融合肽共价或非共价结合,形成共轭分子。成分(II)最好是完整版或部分版的 IP2(中间肽 2)。优选的实施方案包括序列 GLP-1(7-35、36 或 37)/IP2/GLP-1(7-35、36 或 37)或 GLP-2 和聚合物成分,例如天然或非天然聚合物。融合肽可以在工程细胞中产生,也可以人工合成,例如通过化学合成与聚合物成分共轭。该共轭分子可用于制备治疗各种疾病或失调的药物,如 1 型或 2 型糖尿病、细胞凋亡相关疾病或神经退行性疾病。