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Issue 4, 2017
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Regulation of RAW 264.7 cell-mediated immunity by polysaccharides from Agaricus blazei Murill via the MAPK signal transduction pathway

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Abstract

Agaricus blazei Murill (ABM) is a common anticancer folk remedy. Its active ingredients, i.e., polysaccharides, have been isolated and exhibit indirect tumor-suppressing activity via immunological activation. The effects of polysaccharides derived from A. blazei Murill (ABMP) on RAW 264.7 cells were examined by western blotting and real-time reverse transcription polymerase chain reaction (RT-PCR). The effects of 500, 1000, and 2000 μg mL−1 ABMP on the growth of RAW 264.7 cells were evaluated by measuring the OD490 value; the optimum concentration was found to be 1000 μg mL−1. Based on the RT-PCR results, the expression levels of JNK, ERK, and p38 decreased substantially in lipopolysaccharide (LPS)-induced RAW 264.7 cells treated with ABMP. In RAW 264.7 cells treated with LPS, the protein expression levels of JNK, ERK, and p38 were decreased, as were the levels of phosphorylated JNK, ERK, and p38. These results indicate that the MAPK signal transduction pathway is a potential mechanism by which ABMP regulates the cell-mediated immunity of RAW 264.7 cells.

Graphical abstract: Regulation of RAW 264.7 cell-mediated immunity by polysaccharides from Agaricus blazei Murill via the MAPK signal transduction pathway

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Article information


Submitted
12 Sep 2016
Accepted
12 Mar 2017
First published
21 Mar 2017

Food Funct., 2017,8, 1475-1480
Article type
Paper

Regulation of RAW 264.7 cell-mediated immunity by polysaccharides from Agaricus blazei Murill via the MAPK signal transduction pathway

F. Cheng, X. Yan, M. Zhang, M. Chang, S. Yun, J. Meng, J. Liu and C. Feng, Food Funct., 2017, 8, 1475
DOI: 10.1039/C6FO01332E

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