[EN] PEPTIDE LIGANDS FOR BINDING TO MT1-MMP<br/>[FR] LIGANDS PEPTIDIQUES POUR LA LIAISON DE MT1-MMP
申请人:BICYCLETX LTD
公开号:WO2018115204A1
公开(公告)日:2018-06-28
A peptide ligand specific for MT1 -MMP comprising a polypeptide comprising two diaminopropionic acid (Dap) or N-alkyldiaminopropionic acid (N-AlkDap) residues, and a third residue selected from cysteine, Dap or N-AlkDap, separated by at least two loop sequences, and a molecular scaffold, the peptide being linked to the scaffold by covalent alkylamino linkages with the Dap or N-AlkDap residues of the polypeptide and by covalent thioether linkages with the cysteine when the third residue is cysteine, such that two polypeptide loops are formed on the molecular scaffold, wherein the peptide ligand comprises an amino acid sequence of formula (II): -A1-X1-U/O2-X3-X4-G5-A2-E6-D7-F8-Y9-X10-X11-A3- (SEQ ID NO: 1) (II) or a pharmaceutically acceptable salt thereof; wherein: A1, A2, and A3 are independently cysteine, L-2,3-diaminopropionic acid (Dap), N-beta-alkyl-L-2,3- diaminopropionic acid (N-AlkDap), or N-beta-haloalkyl-L-2,3-diaminopropionic acid (N- HAlkDap), provided that at least one of A1, A2, and A3 is Dap, N-AlkDap or N-HAlkDap; X represents any amino acid residue; U represents a polar, uncharged amino acid residue selected from N, C, Q, M, S and T; and O represents a non-polar aliphatic amino acid residue selected from G, A, I, L, P and V.
一种特异性结合MT1-MMP的多肽配体,包含一个多肽,该多肽包含两个二氨丙酸(Dap)或N-烷基二氨丙酸(N-AlkDap)残基,以及第三个残基,选自半胱氨酸、Dap或N-AlkDap,通过至少两个环序列隔开,以及一个分子支架,该多肽通过共价烷基氨基连接与多肽的Dap或N-AlkDap残基相连,并且当第三个残基为半胱氨酸时,通过共价硫醚连接与半胱氨酸相连,使得在分子支架上形成两个多肽环,其中多肽配体包含公式(II)的氨基酸序列:-A1-X1-U/O2-X3-X4-G5-A2-E6-D7-F8-Y9-X10-X11-A3-(SEQ ID NO: 1)(II)或其药用可接受的盐;其中:A1、A2和A3独立地为半胱氨酸、L-2,3-二氨丙酸(Dap)、N-β-烷基-L-2,3-二氨丙酸(N-AlkDap)或N-β-卤代烷基-L-2,3-二氨丙酸(N-HAlkDap),前提是至少A1、A2和A3中的一个为Dap、N-AlkDap或N-HAlkDap;X代表任何氨基酸残基;U代表一个极性、不带电的氨基酸残基,选自N、C、Q、M、S和T;O代表一个非极性脂肪族氨基酸残基,选自G、A、I、L、P和V。