Chemical modifications of the (1→3)-α-D-glucan from spores of Ganoderma lucidum and investigation of their physicochemical properties and immunological activity

被引:164
作者
Bao, XF [1 ]
Duan, JY [1 ]
Fang, XY [1 ]
Fang, JN [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Biol Sci, Shanghai Inst Mat Med, Shanghai 200031, Peoples R China
关键词
Ganoderma lucidum; (1 -> 3)-alpha-D-glucan; chemical modification; immunological activity;
D O I
10.1016/S0008-6215(01)00238-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A linear (1 --> 3)-alpha -D-glucan was isolated from the spores of Ganoderma lucidum (Fr.) Karst. Six different functionalized derivatives of the (1 --> 3)-alpha -D-glucan-aminopropylated, hydroxyethylated, sulfated, carboxymethylated, carboxymethylated and sulfated, and benzylamidated-carboxymethylated-with varying degrees of substitution were synthesized. The structural features and physicochemical properties of all derivatives were investigated by means of chemical and spectral analyses, and their effects on lymphocyte proliferation and antibody production were tested in vitro and in vivo. In general, the structural and physicochemical properties, and lymphocyte proliferation activity of all samples varied with the functionalized groups and the degree of substitution. The results of immunological assays indicated that some modified derivatives had potent stimulating effects on lymphocyte proliferation and antibody production and the introduction of carboxymethyl group with low degree of substitution (DS < 0.28) was the best choice on the improvement of the immunostimulating activity. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:127 / 140
页数:14
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