The regulation of CD4+ T cell immune responses toward Th2 cell development by prostaglandin E2

免疫系统 细胞生物学 生物 信号转导 T细胞 MAPK/ERK通路 免疫学 癌症研究
作者
Yu-Shi Bao,Ping Zhang,Rujuan Xie,Mei Wang,Zhiyong Wang,Zheng Zhou,Weihua Zhai,Sizhou Feng,Mingzhe Han
出处
期刊:International Immunopharmacology [Elsevier BV]
卷期号:11 (10): 1599-1605 被引量:28
标识
DOI:10.1016/j.intimp.2011.05.021
摘要

As an important immune mediator, PGE2 plays an important role in the immune tolerance, autoimmune diseases, immune regulation and tumor immunotolerance. PGE2 is considered to be a promising candidate for the control of the immune diseases. To further understand the immuno-modulating effects of PGE2 on CD4+ T cells, in vitro investigation was conducted in the present study. The results showed that PGE2 inhibited the proliferation of T cells in vitro in a dose-dependent manner. Gene expression profiling showed that 1716 genes were down regulated and 73 genes were up regulated with a change of 1.5 fold. Several signal transduction pathways were involved, such as TNF-α and NF-kB signaling pathway, T cell receptor signaling pathway, IL-2 signaling pathway, and MAPK pathway. The results showed that PGE2 inhibited IFN-γ, TNF-α and IL-4 production by CD4+ T cells 24h after cell culture. A comparison between IFN-γ and IL-4 production showed that PGE2 enhanced the relative ratio of IL-4 to IFN-γ in CD4+ T cells culture, and regulated CD4+ T cells toward Th2 cell development. The results of the present study indicated that PGE2 has the potential to treat Th1-mediated inflammatory diseases by regulating CD4+ T cells toward Th2 cell immune response.
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