Synthesis of high functionality and quality mannose-grafted lipids to produce macrophage-targeted liposomes

Autor: Shigeru Kawakami, Tadaharu Suga, Yorinao Chinda, Tatsuo Inamine, Masayori Hagimori, Yuki Fuchigami, Naoya Kato, Kazuto Yamanami
Rok vydání: 2018
Předmět:
Zdroj: European Journal of Pharmaceutical Sciences. 123:153-161
ISSN: 0928-0987
DOI: 10.1016/j.ejps.2018.07.036
Popis: The mannose receptor, which is responsible for tumor invasion, proliferation, and metastasis in the tumor microenvironment, is overexpressed in tumor-associated macrophages. Mannose is commonly applied to PEGylated liposomes in macrophage-targeted cancer therapy. To develop a high functionality and quality (HFQ) lipid for macrophage-targeted liposomes, we designed a novel mannosylated lipid with improved mannose receptor binding affinity using serine?glycine repeats (SG)n. We synthesized Man(S)-(SG)5-SSK-K(Pal)2 using only a fluorenylmethyloxycarbonyl (Fmoc) protecting group solid-phase peptide synthesis method, which produced a high-quality lipid at a moderately good yield. We then prepared Man-(SG)5/PEGylated liposomes using a post-insertion technique to insert Man(S)-(SG)5-SSK-K(Pal)2 into the PEGylated liposomes. In vitro cell investigations revealed that the Man-(SG)5/PEGylated liposomes effectively associated with mouse peritoneal macrophages by interacting with the mannose receptors. The results suggest that we produced a novel high-quality, highly functional mannosylated lipid that is suitable for clinical drug delivery applications.
European Journal of Pharmaceutical Sciences, 123, pp.153-161; 2018
Databáze: OpenAIRE