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转录组分析揭示了大米种子衍生的PEP1在树突细胞上的免疫调节活性

Tingmin Qu¹, Shuwen He¹, Ying Wu¹

¹School of Food Science and Bioengineering, Hunan Provincial Key Laboratory of Cytochemistry, Changsha University of Science & Technology, Changsha 410114, China.

Molecules (Basel, Switzerland)

|July 14, 2023

概括

米PEP1增强免疫细胞标记物,平衡炎症因素. 这种天然化合物通过调节关键细胞通路,显示出治疗炎症的潜力.

科学领域:

免疫学免疫学免疫学
生物化学生物化学
分子生物学分子生物学

背景情况:

来自食物的生物活性可以调节免疫反应.
来自大米的PEP1 (GIAASPFLQSAAFQLR) 具有显著的免疫活性,但其机制尚不清楚.

研究的目的:

在小鼠树突细胞上阐明来自大米的PEP1的免疫调节机制 (DC2.4).
研究PEP1对DC成熟标记物,细胞因子释放和相关信号通路的影响.

主要方法:

使用PacBio测序和RNA测序 (RNA-Seq) 处理PEP1的DC2.4细胞的转录组测序.
对成熟树突细胞 (CD86,MHC-II) 的特征标记的分析.
分子对接模拟用于预测PEP1,MHC-II和TCR之间的相互作用.
量化促炎和抗炎细胞因子的释放.
对信号通路的评估,包括NF-κB,MAPK,JAK-STAT和TGF-β.

主要成果:

在DC2.4细胞中,PEP1治疗显著上调了CD86和MHC-II的表达.
分子对接表明PEP1与MHC-II和TCR结合的结和静电相互作用的关键作用.
PEP1增加了抗炎性细胞因子 (IL-4,IL-10) 和减少了促炎性细胞因子 (IL-6,TNF-α).
RNA-seq数据显示,PEP1在NF-κB,MAPK,JAK-STAT和TGF-β信号通路中调节基因表达.

结论:

来自大米的PEP1在树突细胞上表现出显著的免疫调节作用.
PEP1促进了DC成熟和平衡的细胞因子配置,这表明它具有抗炎性质.
PEP1通过调节关键的免疫信号通路而起作用,突出其作为自然免疫调节剂治疗炎症的潜力.

关键词:

在dc2.4细胞中,dc2.4是这是一种免疫皮质.免疫调节机制免疫调节机制这是一种来自大米的酸.转录组 (transcriptome) 是一个转录组.

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