Identification and characterization of apoptosis-associated speck-like protein gene of Micropterus salmoides
文献类型： 外文期刊
作者： Yang, Chao 1 ; Dong, Junjian 1 ; Sun, Chengfei 1 ; Tian, Yuanyuan 1 ; Liu, Zhigang 1 ; Gao, Fengying 1 ; Zhang, Hetong 1 ; Ye, Xing 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Inst, Key Lab Trop & Subtrop Fisheries Resource Applicat, Minist Agr, Guangzhou 510380, Peoples R China
2.Chinese Acad Fishery Sci, Pearl River Fisheries Inst, Key Lab Aquat Anim Immune Technol Guangdong Prov, Guangzhou 510380, Peoples R China
3.Shanghai Ocean Univ, Key Lab Explorat & Utilizat Aquat Genet Resources, Minist Educ, Shanghai 201306, Peoples R China
4.Shanghai Ocean Univ, Key Lab Freshwater Aquat Genet Resources, Minist Agr, Shanghai 201306, Peoples R China
关键词： Largemouth bass; Aeromonas veronii; Ms Asc aggregation; Immune response; Inflammasome
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）
ISSN： 2352-5134
年卷期： 2022 年 25 卷
页码：
收录情况： SCI
摘要： Apoptosis-related speck-like protein (ASC) is a key adapter protein in many inflammasome protein complexes, which mediates inflammation and host defense. In this study, an ASC gene (named Msasc) was identified and cloned from the liver tissue of Micropterus salmoides. The full-length cDNA sequence of Msasc was 573 bp, encoding 190 amino acids. Protein prediction shows that MsAsc contains two conserved domains, including the pyrin domain and caspase recruitment domain. The tissue distribution of Msasc mRNA in M. salmoides was investigated using the qPCR method. The expression of this gene could be detected in eight types of tissues, among which the heart, gill, and liver tissues showed a relatively higher expression level; the expression level was the lowest in the brain. When infected with Aeromonas veronii, the expression of Msasc in the spleen and liver tissues of M. salmoides reached its peak at 24 h after infection. Cell transfection experiment showed that MsAsc was distributed in HeLa cells in a diffuse manner. Results of the immune challenge experiment revealed that the inflammasome stimulator nigericin could markedly induce the aggregation of MsAsc in HeLa cells. These results suggest that Msasc is involved in the immune response of M. salmoides to A. veronii infection. This study lays a foundation for an in-depth understanding of the antibacterial function of Msasc in M. salmoides.
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