在Tegillarca granosa中没有与抗菌免疫反应相关的粒细胞的产生
Hongxing Liu1, Sixuan Ding2, Yingbin Xu2
1Key Laboratory of Aquatic Germplasm Resource of Zhejiang, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, China.
Fish & shellfish immunology
|December 24, 2023
概括
血中的粒细胞产生氧化 (NO),这是先天免疫的关键分子. 这项研究表明,来自粒细胞的NO对于对抗Tegillarca granosa中的细菌感染至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 氧化 (NO) 是一种重要的信号分子和动物免疫效应剂,由氧化合成酶 (NOS) 生产.
- 海洋双生物中的血细胞对于先天免疫反应至关重要,包括抗菌防御.
- 双动物中血细胞衍生的NO的特定免疫功能在很大程度上仍未被描述.
研究的目的:
- 为了研究血细胞衍生氧化 (NO) 在血,Tegillarca granosa的抗菌免疫反应中的作用.
- 确定哪些血细胞类型负责NO的产生,并分析氧化合成酶 (TgNOS) 的表达.
主要方法:
- 从Tegillarca granosa中分离了两种血细胞类型 (红细胞和粒细胞),使用Percoll密度梯度离心法.
- 在隔离的血细胞中分析NO生产水平和TgNOS基因表达.
- 在与Vibrio parahemolyticus的挑战后,使用NO供体 (酸,SNP) 评估NO的抗菌作用.
主要成果:
- 氧化 (NO) 主要检测到在粒细胞中,在红细胞中产生的最小量.
- 与红细胞相比,粒细胞的NO度和TgNOS表达显著更高.
- 在Vibrio parahemolyticus挑战后,颗粒细胞中的TgNOS表达显著增加.
- 用酸 (SNP) 治疗增强了血细胞NO的产生,并改善了致病细菌的杀死.
结论:
- 颗粒细胞衍生的氧化 (NO) 在血,Tegillarca granosa的抗菌免疫反应中起着重要作用.
- 这些发现强调了由特定的血细胞群产生的NO在双天生的免疫力中的重要性.
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