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Studies on the immuno-modulating and anti-tumor activities of Ganoderma lucidum (Reishi) polysaccharides

2004; Elsevier BV; Volume: 12; Issue: 21 Linguagem: Inglês

10.1016/j.bmc.2004.08.003

1464-3391

Hung-Sen Chen, Yow‐Fu Tsai, Steven Lin, Chia-Ching Lin, Kay‐Hooi Khoo, Chun-Hung Lin, Chi‐Huey Wong,

Complementary and Alternative Medicine Studies

We describe here the isolation of Reishi polysaccharides for the study of their effect on cytokine expression in mouse splenocytes. A fraction (F3) has been shown to activate the expression of IL-1, IL-6, IL-12, IFN-gamma, TNF-alpha, GM-CSF, G-CSF, and M-CSF, and from this three subfractions have been prepared where F3G1 activates IL-1, IL-12, TNF-alpha, and G-CSF, F3G2 activates all the cytokines as F3 does, and F3G3 activates only IL-1 and TNF-alpha. Together with previous studies, the mode of action on macrophages has been proposed where F3 binds to TLR4 receptor and activates extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 to induce IL-1 expression.