Design of vesicles of 1,2-di-O-acyl-3-O-(beta-D-sulfoquinovosyl)-glyceride bearing two stearic acids (beta-SQDG-C18), a novel immunosuppressive drug.
The immunosuppressive effects of synthetic sulfo-glycolipids in the class of sulfoquinovosyl-diacylglycerols (SQDG), including stereoisomers, were interesting in development of a promising clinical drug. Especially, 1,2-di-O-stearoyl-3-O-(6-deoxy-6-sulfo-beta-D-glucopyranosyl)-sn-glycerol (beta-SQDG-C18) was thought to be a valuable candidate because of the preliminary observations of its high inhibitory activities in spite of low toxicities. The problem of using this material is to find an applicable way avoiding its low solubility in water. The vesicle formation of beta-SQDG-C18 is advantageous to i.v. administration in its chemico-structural character. With preparation in water, beta-SQDG-C18 was hard to form vesicles, because its hydrophilicity was strong. We examined the suitable parameter of the vesicle forming condition. It was possible to take a balance between the hydrophilicity and the hydrophobicity of the beta-SQDG-C18 molecule to be optimized to form vesicles in 150 mM PBS. In addition, we demonstrated the strong immunosuppressive activity of beta-SQDG-C18 vesicles. This is the first report of the preparation method of beta-SQDG-C18 vesicles, which should facilitate in vitro and in vivo application.
Matsumoto
Kenjiro
K
Department of Applied Biological Science, Science University of Tokyo, 2641 Yamazaki, Noda-shi, Chiba-ken 278-8510, Japan.
Takenouchi
Mika
M
Ohta
Keisuke
K
Ohta
Yumiko
Y
Imura
Tomohiro
T
Oshige
Masahiko
M
Yamamoto
Yoshiteru
Y
Sahara
Hiroeki
H
Sakai
Hideki
H
Abe
Masahiko
M
Sugawara
Fumio
F
Sato
Noriyuki
N
Sakaguchi
Kengo
K
D004355:Drug Stability; D005990:Glycerol / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology*; D006801:Humans; D007166:Immunosuppressive Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D066298:In Vitro Techniques; D007963:Leukocytes, Mononuclear / Q000187:drug effects*; D015394:Molecular Structure; D009005:Monosaccharides / Q000138:chemical synthesis / Q000494:pharmacology*; D013229:Stearic Acids / Q000737:chemistry* / Q000494:pharmacology
C497947:1,2-di-O-stearoyl-3-O-(6-deoxy-6-sulfo-beta-D-glucopyranosyl)-sn-glycerol; D007166:Immunosuppressive Agents; D009005:Monosaccharides; D013229:Stearic Acids; D005990:Glycerol