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Activation of B lymphocytes by GLIS, a bioactive proteoglycan from Ganoderma lucidum.

机译:GLIS(灵芝的一种生物活性蛋白聚糖)激活B淋巴细胞。

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摘要

A bioactive fraction (GLIS) was isolated from the fruiting body of the fungus Ganoderma lucidum using successive chromatographic steps. GLIS is a proteoglycan and has a carbohydrate: protein ratio of 11.5 : 1. The carbohydrate portion is composed of seven different monosaccharides, predominantly D-glucose, D-galactose and D-mannose in the molar ratio of 3.0 : 1 : 1.GLIS stimulated the proliferation of mouse spleen lymphocytes, resulting in a three to four-fold increase in the percentage of B cells. GLIS also activated mouse spleen lymphocytes, and most of the activated cells were B cells. The B cells were enlarged, expressed CD71 and CD25 on the cell surface, and showed an increase in the secretion of immunoglobulin. Lymphocytes also showed a slightly increased production of IL-2, whereas the secretion of IL-4 was not influenced by GLIS. Furthermore, GLIS did not influence the intracellular Ca2+ concentration of lymphocytes, but it enhanced the expression of protein kinase C alpha and protein kinase C gamma in B cells. According to our results GLIS is a new B cell-stimulating factor.
机译:使用连续的色谱步骤从真菌灵芝的子实体中分离出生物活性级分(GLIS)。 GLIS是一种蛋白聚糖,碳水化合物与蛋白质的比例为11.5:1。碳水化合物部分由7种不同的单糖组成,主要为D-葡萄糖,D-半乳糖和D-甘露糖,摩尔比为3.0:1:1:1。刺激小鼠脾淋巴细胞的增殖,导致B细胞百分比增加三到四倍。 GLIS还激活了小鼠脾脏淋巴细胞,并且大多数激活的细胞是B细胞。 B细胞增大,在细胞表面表达CD71和CD25,并显示免疫球蛋白的分泌增加。淋巴细胞还显示出IL-2的分泌略有增加,而IL-4的分泌不受GLIS的影响。此外,GLIS不会影响淋巴细胞的细胞内Ca2 +浓度,但会增强B细胞中蛋白激酶Cα和蛋白激酶Cγ的表达。根据我们的结果,GLIS是一种新的B细胞刺激因子。

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