[EN] NOVEL CYCLIC MONOMER AND DIMER PEPTIDES HAVING INTEGRIN ANTAGONIST ACTIVITY<br/>[FR] NOUVEAUX PEPTIDES MONOMÈRES ET DIMÈRES CYCLIQUES POSSÉDANT UNE ACTIVITÉ ANTAGONISTE DE L'INTÉGRINE
申请人:PROTAGONIST THERAPEUTICS INC
公开号:WO2016054445A1
公开(公告)日:2016-04-07
The invention relates to C to N cyclized (C-N cyclic) monomer and dimer peptide molecules, as well as peptide dimers which are connected by linker moieties at the N terminus and the C terminus of each peptide subunit, which inhibit binding of α4β7 to the mucosal addressin cell adhesion molecule (MAdCAM) in vivo, and show high selectivity against α4β1 binding.
The invention provides pharmaceutical compositions and method of using the compositions, wherein the compositions comprise liposomes or micelles that contain one or more targeting peptides and/or anticancer drugs. In various embodiments, the components of the liposomes can include a) a phospholipid and optionally a lipid that is not a phospholipid; b) a pegylated lipid; c) a peptide-ethylene glycol (EG)-lipid conjugate wherein the peptide is a targeting ligand, and d) one or more drug-conjugated lipid, encapsulated drugs, or a combination thereof. The peptide-EG-lipid conjugate can be, for example, a compound of Formula (I) or Formula (II). The ethylene glycol (EG) segments of the peptide-EG-lipid conjugate can be, for example, EG6 to about EG36; and the EG segment can be conjugated to one or more lysine moieties.
The invention relates to peptide dimer compounds and peptide monomer compounds that potently inhibit binding of α4β7 to the mucosal addressin cell adhesion molecule (MAdCAM) in vivo, possess high selectivity against α4β1 binding, and have high stability under gastrointestinal conditions.
The invention relates to thioether monomer and dimer peptide molecules which inhibit binding of α4β7 to the mucosal addressing cell adhesion molecule (MAdCAM) in vivo.
The invention provides pharmaceutical compositions and method of using the compositions, wherein the compositions comprise liposomes or micelles that contain one or more targeting peptides and/or anticancer drugs. In various embodiments, the components of the liposomes can include a) a phospholipid and optionally a lipid that is not a phospholipid; b) a pegylated lipid; c) a peptide-ethylene glycol (EG)-lipid conjugate wherein the peptide is a targeting ligand, and d) one or more drug-conjugated lipid, encapsulated drugs, or a combination thereof. The peptide-EG-lipid conjugate can be, for example, a compound of Formula (I) or Formula (II). The ethylene glycol (EG) segments of the peptide-EG-lipid conjugate can be, for example, EG6 to about EG36; and the EG segment can be conjugated to one or more lysine moieties.
本发明提供了药物组合物和使用组合物的方法,其中组合物包括含有一种或多种靶向肽和/或抗癌药物的脂质体或胶束。在不同的实施方案中,脂质体的成分可包括 a) 磷脂和可选的非磷脂的脂质;b) 聚乙二醇脂质;c) 肽-乙二醇(EG)-脂质共轭物,其中肽是靶向配体;d) 一种或多种药物共轭脂质、包封药物或其组合。例如,肽-EG-脂质共轭物可以是式 (I) 或式 (II) 的化合物。例如,肽-EG-脂质共轭物的乙二醇(EG)段可以是 EG6 至约 EG36;EG 段可以与一个或多个赖氨酸分子共轭。