DSPE-PEG-COOH封端脂质体表面偶联PPACK肽的策略及其稳定性研究
专著:BioMed Research International文献资料外部链接://onlinelibrary.wiley.com/doi/full/10.1155/2014/129458内容提要:Postmodification of the liposome surface by amine-carboxyl conjugation (Figure 1(b)) was recently reported to overcome the rapid systemic clearance of D-phenylalanyl-L-prolyl-L-arginyl-chloromethyl ketone short peptide (PPACK), an antithrombin agent [30]. Palekar et al. demonstrated that PPACK peptide is attached to the surface of preformed liposomes composed of EPC, DPPE, and DSPE-PEG2000-COOH (94 : 4 : 2 molar ratio) by applying standard amine-carboxyl coupling conditions for conjugating the N-terminus of the peptide to preformed carboxy-terminated DSPE-PEG-containing liposomes. The peptide was conjugated to the unilamellar liposomes and liposomes were purified by dialysis for four hours, which suggests high stability of the nanosystem.