需要Spätzle处理酶来激活Tenebrio molitor的背部开关蛋白1诱导的Toll免疫信号通路
1Department of Plant Medicals, College of Life Sciences, Andong National University, Andong, Republic of Korea.
PloS one
|September 21, 2023
概括
背部开关蛋白1 (DSP1) 激活免疫反应. 这项研究表明,spätzle处理酶 (SPE) 将DSP1连接到Toll通路,控制昆虫的免疫力.
科学领域:
- 昆虫免疫学 昆虫免疫学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 背部开关蛋白1 (DSP1) 作为一种与损伤相关的分子模式 (DAMP) 分子起作用,启动免疫反应.
- DSP1激活了Toll免疫信号通路,诱导了黑色化,脂酶A2 (PLA2) 活性和抗菌 (AMP) 合成.
- 这条途径内的DSP1的确切目标仍然未被确定.
研究的目的:
- 为了调查spätzle处理酶 (SPE) 在Tenebrio molitor中DSP1诱导的Toll免疫信号通路中的作用.
- 阐明Tm-SPE在将DSP1连接到下游免疫反应中的功能.
主要方法:
- 分析Tm-SPE在不同发育阶段和组织中的表达.
- 使用RNA干扰 (RNAi) 来评估Tm-SPE功能的基因沉默.
- 评估免疫反应,包括血细胞结节的形成,氧化酶 (PO) 活性,PLA2活性和AMP合成.
主要成果:
- 在T. molitor.的所有发育阶段和幼虫组织中表达Tm-SPE.
- 免疫挑战或DSP1注射可提高Tm-SPE表达的调节,这种表达被RNAi降低.
- 通过RNAi介导的Tm-SPE中断显著损害了DSP1诱导的免疫反应,包括结节形成,PO,PLA2和AMP合成.
结论:
- 在DSP1诱导的Toll免疫信号通路中,Tm-SPE起着至关重要的作用.
- 在T. molitor中,tm-SPE充当一个关键的调解者,将DSP1连接到T. molitor的细胞和幽默免疫反应.
- 需要对SAE和MSP等上游蛋白酶进行进一步的研究,以完全绘制DSP1在蛋白质溶解级联中的目标.
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