Synthesis of Sialyl Lewis X-Polysaccharide Conjugates.
作者:Masahiro SAKAGAMI、Kazutoshi HORIE、Kazutaka NAKAMOTO、Takayuki KAWAGUCHI、Hiroshi HAMANA
DOI:10.1248/cpb.48.1256
日期:——
Sialyl Lewis X (SLeX) is well known as a ligand of the cell adhesion molecule E-selectin which is specifically expressed at inflammatory lesion sites. We have synthesized several SLeX-polysaccharide conjugates and examined their potential for drug delivery to inflammatory lesions. The AUC (area under the blood concentration-time curve) 0-24 h of SLeX-CMCht (1), SLeX-CMPul (2) and SLeX-DSH (3) at the inflammatory lesion was about 60-, 300-, and 30-fold higher than that of the monovalent SLeX (7), respectively. Moreover, 1 showed 2-fold higher accumulation in the inflammatory lesion than SLN-CMCht (4), and 2 showed 2.5-fold higher accumulation than SLN-CMPul (5).
众所周知,Sialyl Lewis X(SLeX)是细胞粘附分子 E-selectin 的配体,而 E-selectin 在炎症病变部位有特异性表达。我们合成了几种 SLeX-多糖共轭物,并研究了它们向炎症病灶给药的潜力。SLeX-CMCht(1)、SLeX-CMPul(2)和 SLeX-DSH(3)在炎症病灶处 0-24 小时的血药浓度曲线下面积(AUC)分别是单价 SLeX(7)的 60 倍、300 倍和 30 倍。此外,与 SLN-CMCht(4)相比,1 在炎症病灶中的蓄积量高出 2 倍,2 比 SLN-CMPul(5)高出 2.5 倍。