Molecular Characterization and Expression Analysis of the C-Type Lectin Domain Family 4 Member F in Litopenaeus vannamei against White Spot Syndrome Virus

文献类型： 外文期刊

第一作者： Xue, Qian

作者： Xue, Qian;Yang, Bingbing;Luo, Kun;Luan, Sheng;Kong, Jie;Li, Xupeng;Meng, Xianhong;Xue, Qian;Luan, Sheng;Kong, Jie;Li, Xupeng;Meng, Xianhong

作者机构：

关键词： viral disease control; innate immunity; LvCLEC4F; WSSV; gene expression; RNAi

期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 8 期

页码：

收录情况： SCI

摘要： Outbreaks of white spot disease in Pacific white shrimp pose a significant threat to the major shrimp farming industry. Understanding the mechanisms of the shrimp against the causative virus is crucial. C-type lectins are important pattern recognition receptors that can be involved in the response against viral infections. This study identified the C-type lectin domain family 4 member F in shrimp as an important receptor gene that could promote replication of the causative virus and affect the survival rate of shrimp. This study will provide a theoretical basis for understanding the resistance mechanisms of shrimp against the virus. White spot disease (WSD) outbreaks pose a significant threat to the Pacific white shrimp (Litopenaeus vannamei) farming industry. The causative agent is the white spot syndrome virus (WSSV). There are no effective treatments for WSD so far. Therefore, understanding the resistance mechanisms of L. vannamei against the WSSV is crucial. C-type lectins (CTLs) are important pattern recognition receptors (PRRs) that promote agglutination, phagocytosis, encapsulation, bacteriostasis, and antiviral infections. This study cloned the C-type lectin domain family 4 member F (LvCLEC4F) from L. vannamei. LvCLEC4F contains a 492 bp open reading frame (ORF) encoding a protein of 163 amino acids, including a carbohydrate recognition domain (CRD). Following a challenge with the WSSV, the expression profile of LvCLEC4F was significantly altered. Using RNA interference (RNAi) technology, it was found that LvCLEC4F promotes WSSV replication and affects the expression levels of genes related to the regulation of apoptosis, signaling and cellular stress response, and immune defense. Meanwhile, the hemolymph agglutination phenomenon in vivo was weakened when LvCLEC4F was knocked down. These results indicated that LvCLEC4F may play an important role in the interaction between L. vannamei and WSSV.

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