scTRIM44 Positively Regulated Siniperca Chuatsi Rhabdovirus Through RIG-I- and MDA5-Mediated Interferon Signaling
文献类型： 外文期刊
第一作者： Niu, Yinjie
作者： Niu, Yinjie;Yang, Xinmei;Liang, Hongru;Luo, Xia;Ma, Baofu;Lin, Qiang;Fu, Xiaozhe;Li, Ningqiu
作者机构：
关键词： scTRIM44; LMBV; ISKNV; SCRV; mandarin fish
期刊名称：VIRUSES-BASEL （ 影响因子：3.5； 五年影响因子：3.7 ）
ISSN：
年卷期： 2024 年 16 卷 12 期
页码：
收录情况： SCI
摘要： Tripartite Motif-Containing 44 (TRIM44) is responsible for cancers, neurodegenerative diseases, and viral infections. However, the role of Siniperca chuatsi TRIM44 (scTRIM44) during viral infection remains unclear. In the present study, we analyzed the molecular characteristics of scTRIM44 and its role in infectious spleen and kidney necrosis virus (ISKNV), largemouth bass virus (LMBV), and Siniperca chuatsi rhabdovirus (SCRV) infection. ScTRIM44 contained one B-box domain (B, 166-207 aa) and a coiled-coil domain (CC, 279-309 aa), but lacked the canonical RING domain of E3 ubiquitin ligases. The scTRIM44 mRNA was expressed relatively high in immune-related tissues. The mRNA expression of scTRIM44 significantly decreased in vivo and vitro post-ISKNV and -LMBV infection. However, the expression of scTRIM44 mRNA showed significant up-regulation post-SCRV infection. ScTRIM44 positively regulated SCRV infection in CPB cells, but copies of ISKNV and LMBV showed no significant alteration in over-expressed or knocked-down scTRIM44 cells. Moreover, scTRIM44 positively regulated RIG-I- and MDA5-mediated interferon molecule signaling. These data suggested that scTRIM44 promoted SCRV infection by positively regulating RIG-I- and MDA5-mediated interferon molecule signaling, but didn't regulate ISKNV and LMBV infection. This research provided a comprehensive insight into the antiviral activity of scTRIM44.
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