通过向Sebastes schlegelii中的IκBα来激活NF-κB途径,circRNA-miRNA相互作用调节免疫反应
Ning Ning Wang1, Ruixue Wu1, Xiantong Liu1
1School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
Fish & shellfish immunology
|August 22, 2025
概括
非编码RNA调节鱼类的免疫力. 微RNAs miR-286 和 miR-786 抑制 IκBα1 和 IκBα2, 激活 NF-κB 途径和黑岩鱼的炎症反应.
科学领域:
- 分子生物学
- 免疫学
- 水生动物健康
背景情况:
- 非编码RNAs (ncRNAs) 是鱼类NF-κB信号通路的关键调节者.
- IκB (卡巴B抑制剂) 是一个关键的NF-κB抑制剂,调节免疫反应.
研究的目的:
- 在黑岩鱼 (Sebastes schlegelii) 中研究两种IκBα对应物 (IκBα1和IκBα2) 在NF-κB通路中的作用.
- 通过特定的微RNA (miRNA) 和循环RNA (circRNA) 阐明这些IκBα对应物的转录后调节.
- 了解远程生物对天生的免疫反应和疾病控制的影响.
主要方法:
- 基因组分析以证实IκBα的远位对应物.
- 对IκBα,miR-286,miR-786和circRNAs的基因表达分析 (qRT-PCR) 作为对细菌 (Edwardsiella piscicida,Streptococcus iniae) 和病毒 (LPS,poly(I:C)) 的反应.
- 在基因和蛋白质层面验证调节机制.
主要成果:
- 在黑岩鱼中鉴定和表征了两种IκBα对应物 (IκBα1和IκBα2).
- 在感染或免疫刺激时发现miR- 286和miR- 786的高表达,分别准IκBα1和IκBα2.
- 证明circRNA-4254和circRNA-273分别与miR-286和miR-786结合,调节NF-κB通路和炎症反应.
结论:
- 通过抑制IkBα1和IkBα2激活NF-κB通路,从而增强鱼类的炎症反应.
- 分别对miR-286和miR-786充当海绵,影响先天免疫力.
- 这些发现揭示了鱼类免疫反应中复杂的ncRNA介导后转录调节,为疾病管理策略提供了洞察力.
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