Immunomodulatory effects of polysaccharopeptide on EAC tumor-bearing mice through MyD88-dependent signaling pathway
10.3969/j.issn.1000-484X.2015.04.010
- VernacularTitle:MyD88依赖途径介导云芝糖肽对荷瘤小鼠免疫调节的机制研究
- Author:
Zifang FENG
;
Zhixue WANG
;
Lijing ZHOU
;
Yixi BAO
- Publication Type:Journal Article
- Keywords:
Polysaccharopeptide;
Immunoregulation;
MyD88-dependent;
EAC
- From:
Chinese Journal of Immunology
2015;(4):480-484,489
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To detect the effects of polysaccharopeptide(PSP) on MyD88-dependent signaling pathway in EAC tumor-bearing mice,and explore the immunomodulatory mechanism of PSP.Methods: Ehrlich′s ascites carcinoma(EAC) C57BL/6 mice were used to establish the animal model for solid tumor.Mice were divided into two groups:WT group and MyD88-/-group.After 22 days of treatment,quantitative real-time PCR( Q-PCR) ,Western blot and were used to detect the related gene and protein expression of TLR4 pathway in spleens,ELISA were used to detect the terminal effect factors secretion eyeball blood from each group.Results:Related genes and proteins of TLR4 pathway in spleen were up-regulated significantly from two groups.Compared with WT group, related genes and proteins in MyD88-dependent pathway(MyD88,TRAF6,NF-κB,AP-1)was down-regulated in MyD88-/-group(P<0.05).Meanwhile,There was no significant change of the related genes and proteins of MyD88-independent pathway(TRAM,TRIF)in MyD88-/-group( P>0.05 ) .The terminal effect factors secretion of IL-2, IL-6, IL-10, TNF-αand IFN-γin MyD88-/-group were decreased significantly compared with WT group(P<0.05).Conclusion:The immunoregulatory effect of PSP on EAC tumor-bearing mice may be implement through the regulation of MyD88-dependent signaling pathway.
