中药复方多糖对不同MHC B-LβⅡ基因型鸡淋巴细胞中TLR4介导的MyD88依赖性途径的影响

doi:10.16431/j.cnki.1671-7236.2018.03.025

Abstract

Abstract:

To investigate the effects of different doses of compound Chinese herbal medicinal polysaccharides (cCHMPS) on TLR4 and downstream MyD88 dependent signal transduction pathway components in chicken lymphocytes of different MHC B-LβⅡ genotypes,PCR-SSCP technique was applied to group layer according to different MHC B-LβⅡ genotypes.The peripheral blood lymphocytes of chicken with different MHC B-LβⅡ genotypes were collected,and added with 100,75,50 and 0 μg/mL cCHMPS (high,middle and low dose groups and control group),respectively,then co-culturing for 16,24,32 and 48 h.The expression of TLR4,MYD88 and TRAF-6 mRNA were detected using Real-time PCR method.The results showed that compared with control group,cCHMPS could significantly improve the expression levels of TLR4,MYD88 and TRAF-6 mRNA of different MHC B-Lβ Ⅱ genotypes chickens (P < 0.05);The expression levels of TLR4,MYD88 and TRAF-6 mRNA of AA genotype chicken lymphocyte in middle and low dose groups were higher than those of high dose group (except TLR4 gene cultured for 16 h);The expression of TLR4,MyD88 and TNAF-6 mRNA of BB genotype in high dose group were higher than those of other dose groups (except TLR4 gene cultured for 32 and 48 h);The expression of TLR4,MyD88 and TNAF-6 mRNA of BC genotype in low dose were higher than that of other dose groups (except TLR4 gene cultured for 16 h).There results indicated that cCHMPS played an important role in the body’s immune regulatory mechanism by binding to TLR4 in the surface of lymphocytes,activating the downstream MyD88-dependent signal transduction pathway,regulating cellular immunity,and cCHMPS optimum immunomodulatory does were different in each MHC B-Lβ Ⅱ genotype chickens.

Key words: compound Chinese herbal medicinal polysaccharides (cCHMPS); MHC B-Lβ Ⅱ gene; chicken lymphocyte; TLR4; MyD88 dependent signaling pathway

CLC Number:

S853.7

MA Zhao, LIU Gang, YANG Li, LIU Xiaoting, QIAO Yanjie, ZHU Xiaoqing, GU Xinli. Effect of Compound Chinese Herbal Medicinal Polysaccharides on MyD88 Dependent Pathway Mediated by TLR4 in Lymphocytes of Chicken with Different MHC B-LβⅡ Genotypes[J]. , 2018, 45(3): 754-762.

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Effect of Compound Chinese Herbal Medicinal Polysaccharides on MyD88 Dependent Pathway Mediated by TLR4 in Lymphocytes of Chicken with Different MHC B-LβⅡ Genotypes

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