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糖氨基甘氨酸酶:细菌和太平洋白Litopenaeus vannamei之间的一种新的竞争

Bo Zheng¹, Gengzhuo Wang¹, Zhe Qu¹

¹MOE Key Laboratory of Marine Genetics and Breeding, Ocean University of China, Qingdao, 266003, China; Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya, 572024, China.

Developmental and comparative immunology

|April 9, 2024

概括

太平洋白通过横向基因转移 (HGT) 获得了细菌衍生的糖氨基甘氨酸 (GAG) 溶酶基因. 这种基因增强了对细菌感染的抵抗力,为GAG和宿主防御机制提供了洞察力.

科学领域:

基因组学就是基因组学.
进化生物学进化生物学
海洋生物学海洋生物学

背景情况:

水平基因转移 (HGT) 是一个重要的进化机制,特别是在 prokaryotes 和 eukaryotes.
关节动物,包括太平洋白 (Litopenaeus vannamei),由于与细菌的密切关联,它们是 prokaryotic HGT 的常见接收者.

研究的目的:

为了识别和表征细菌衍生水平转移基因在Litopenaeus vannamei.
为了研究编码糖氨基甘氨酸 (GAG) 解酶的特定鉴定基因的功能.

主要方法:

全基因组同质性搜索和遗传学分析以识别HGT基因.
实时定量PCR (RT-qPCR) 分析基因表达模式.
RNA干扰 (si-RNA) 评估基因功能,以应对细菌的挑战.

主要成果:

在L. vannamei.中发现了6种细菌衍生的HGT基因.
一个基因 (LOC113799989) 编码了一种新型的GAG酶,具有冠状腺酶AC结构域.
LOC113799989的表达在肝和心脏中是最高的,由Vibrio parahaemolyticus迅速上调.
在V. parahaemolyticus感染后增加了的死亡率.

结论:

通过HGT获得的已识别的GAG酶,在对V. parahaemolyticus等细菌病原体的防御中发挥作用.
这一发现为GAG在宿主-病原体相互作用和关节动物免疫力中的功能提供了新的见解.

关键词:

葡萄糖氨基甘氨酸酶酶的使用.横向的基因转移是可以实现的.佩内乌斯 (Penaeus vannamei) 是一个水族群.

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