在Mytilus galloprovincialis中含有具有免疫功能的蛋白质的新型CUB域的表征
Fang Song1, Zhi Liao1, Wenhui Xiao1
1Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City 316022, Zhejiang, China.
来自Mytilus galloprovincialis的一种新型CUB域含蛋白 (CDCP),名为Mg-CUB,显示出抗菌活性和免疫信号作用. 这项研究增强了对软体动物天生的免疫力的理解.
科学领域:
- 海洋生物学 海洋生物学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- CUB域是参与组织发育和免疫的蛋白质中的关键结构动图.
- 含有CUB域的蛋白质 (CDCPs) 被认为是双动物的免疫分子,但它们的特定作用在很大程度上仍未被探索.
- 关于CDCPs在双体免疫防御机制中的作用的知识有限.
研究的目的:
- 来自Mytilus galloprovincialis的一种新型CDCP的特征,被指定为Mg-CUB.
- 为了研究Mg-CUB在微生物刺激后的组织分布和基因表达模式.
- 评估复合Mg-CUB (rMg-CUB) 与免疫相关的功能,包括抗菌活性,细菌结合和参与免疫信号通路.
主要方法:
- 来自Mytilus galloprovincialis的一种新型CDCP (Mg-CUB) 的表征.
- 在各种组织和细菌挑战后分析Mg-CUB基因表达.
- 重组Mg-CUB的表达和其抗菌,结合和凝结活动的评估.
- 研究rMg-CUB对血液细胞中免疫信号通路 (TLR4,MyD88,NF-κB) 的影响.
主要成果:
- Mg-CUB 呈现广泛的组织分布,在补充肌肉和血细胞中表达高.
- 细菌感染显著上调血细胞中的Mg-CUB表达.
- 再组合Mg-CUB (rMg-CUB) 显示抗微生物活性对抗阴性细菌,与细菌和脂多糖 (LPS) 结合,并表现出结合性质.
- rMg-CUB注射上调了TLR4,MyD88和血液细胞中的NF-κB表达.
结论:
- -CUB在Mytilus galloprovincialis的天生的免疫反应中起着重要的作用.
- -CUB既作为具有抗菌性能的免疫效应剂,又作为模式识别受体 (PRR) 起作用.
- 这项研究提供了关于CUB域在软体动物天生的免疫力中的多方面的作用的关键见解,特别是在识别微生物组件和激活信号通路方面.
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