Ganoderma lucidum polysaccharides promote Th1 cell differentiation of human peripheral blood lymphocytes through the upregulation of STAT4
10.3760/cma.j.issn.0254-5101.2013.03.014
- VernacularTitle:灵芝多糖通过上调STAT4促进人外周血淋巴细胞中Th1细胞的分化
- Author:
Yuzhen LU
;
Guining LIANG
;
Lulu CHEN
;
Yayi HOU
- Publication Type:Journal Article
- Keywords:
Ganoderma lucidum polysaccharide (GLP);
Th1 cells;
STAT4;
IFN-γ
- From:
Chinese Journal of Microbiology and Immunology
2013;(3):222-226
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effects of Ganoderma lucidum polysaccharide (GLP) on PBMCs and the related immune mechanism.Methods PBMCs from cancer patients and healthy donors were isolated and treated with different doses of Ganoderma lucidum polysaccharides (10 ng/ml,50 ng/ml and 100 ng/ml).DC cell costimulatory molecules (HLA-DR,CD83,and CD11 c),Th1 (CD3 + CD8-IFN-γ+) cells,Th2 (CD3 + CD8-IL-4+) cells and NK (CD3-CD56+) were analyzed by FCM.Furthermore,The CD3+ CD4+ Th ceils were separated by immunomagnetic beads and stimulated with Ganoderma lucidum polysaccharides at different concentrations in culture.After 24 h,the cytokine expression levels of Th1 and Th2were detected by RT-PCR.The expressions of Th1 differentiation-related transcription factor,STAT4,were analyzed by Western blot.Results Ganoderma lucidum polysaccharides can significantly stimulate in vitro Thl cell differentiation (P＜0.01) in a dose depend manner.It correlates with an increased expression of STAT4 and the elevated mRNA expression levels of Th1 cytokineincluding IL-12,IFN-γ and TNF-α (P＜0.01).Conclusion Ganoderma lucidum polysaccharides may promote Th1 differentiation and increase the secretion of Th1 cvtokines through the upregulation of STAT4.
